diff --git a/.coveralls.yml b/.coveralls.yml new file mode 100644 index 0000000..3ac81fe --- /dev/null +++ b/.coveralls.yml @@ -0,0 +1 @@ +repo_token: xl1m2EiKjG4YlJQ0KjTTBNDRcAFD0lCVt diff --git a/.dir-locals.el b/.dir-locals.el new file mode 100644 index 0000000..2dc381f --- /dev/null +++ b/.dir-locals.el @@ -0,0 +1,6 @@ +((cperl-mode . ((dumb-jump-force-searcher . rg) + (cperl-indent-level . 4) + (cperl-close-paren-offset . -4) + (cperl-indent-subs-specially . nil) + (indent-tabs-mode . nil) + (eval . (auto-fill-mode -1))))) diff --git a/.dumbjump b/.dumbjump new file mode 100644 index 0000000..060cbbd --- /dev/null +++ b/.dumbjump @@ -0,0 +1,2 @@ ++bin/*.in ++lib/*.pm.in diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml new file mode 100644 index 0000000..b2433de --- /dev/null +++ b/.github/workflows/test.yml @@ -0,0 +1,80 @@ +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +name: Test suite + +on: + push: + branches: [master] + + pull_request: + branches: [master] + types: [opened, synchronize, reopened, ready_for_review] + +jobs: + # call-simple-perl-test: + # uses: perl-actions/github-workflows/.github/workflows/simple-perltester-workflow.yml@main + # with: + # since-perl: 5.14 + + test: + name: Perl ${{ matrix.perl-version }} + runs-on: ubuntu-latest + + strategy: + matrix: + perl-version: + - '5.38' + - '5.36' + - '5.34' + - '5.32' + - '5.30' + + container: + # This Docker image should avoid the need to run: + # + # cpanm -n Devel::Cover::Report::Coveralls + image: perldocker/perl-tester:${{ matrix.perl-version }} + + steps: + - run: apt-get update && apt-get install -y sudo texinfo texlive + + - name: Checkout code + uses: actions/checkout@v2 + +# - uses: awalsh128/cache-apt-pkgs-action@latest +# with: +# debug: true +# packages: texinfo texlive +# version: 1.0 + + - run: autoreconf --install + - name: ./configure && make + run: | + eval `perl -V:siteprefix` + # Note: this will complain Test::Output isn't yet installed: + ./configure --prefix=$siteprefix && make + + # but that's OK because we install it here: + make cpanm + + #- name: Run tests + # run: make test + + - run: make distcheck + - run: perl Build.PL + - run: ./Build build + - run: cover -test -report coveralls + - run: ./Build distcheck diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..caf4ba3 --- /dev/null +++ b/.gitignore @@ -0,0 +1,35 @@ +.dirstamp +/Build +/ChangeLog +/MYMETA.json +/MYMETA.yml +/Makefile +/Makefile.in +/bin/chkstow +/bin/stow +/doc/stow.info +/doc/version.texi +/playground/ +tmp-testing-trees*/ +_build/ +autom4te.cache/ +blib/ +config.log +config.status +configure +/cover_db/ +/doc/ChangeLog.OLD +/doc/manual.pdf +/doc/manual-single.html +/doc/manual-single-old-texi2html.html +/doc/manual-single-texi2html-wrapper.html +/doc/manual-split/ +/doc/manual.texi +/doc/stow.pdf +/doc/stow.8 +/lib/Stow.pm +/lib/Stow/Util.pm +stamp-vti +stow-[0-9].[0-9].[0-9].tar.* +stow-[0-9].[0-9].[0-9]/ +Stow-v[0-9].[0-9].[0-9].tar.* diff --git a/.travis.yml b/.travis.yml new file mode 100644 index 0000000..cbd4ef6 --- /dev/null +++ b/.travis.yml @@ -0,0 +1,25 @@ +language: perl +perl: + - "5.20" + - "5.18" + - "5.16" + - "5.14" +sudo: false +addons: + apt: + packages: + - texinfo + - texlive +before_install: + - cpanm -n Devel::Cover::Report::Coveralls +install: + - autoreconf --install + - eval `perl -V:siteprefix` + # Note: this will complain Test::Output isn't yet installed: + - ./configure --prefix=$siteprefix && make + # but that's OK because we install it here: + - make cpanm +script: + - make distcheck + - perl Build.PL && ./Build build && cover -test -report coveralls + - ./Build distcheck diff --git a/AUTHORS b/AUTHORS index fbf4c2f..1e98122 100644 --- a/AUTHORS +++ b/AUTHORS @@ -1,35 +1,79 @@ -Stow was written by Bob Glickstein , Zanshin -Software, Inc. +This file documents the high-level history of Stow, and some of its +major contributors. See also the THANKS file for a more complete list +of contributors. -Contributions from Gord Matzigkeit . +Stow was originally written by Bob Glickstein , +Zanshin Software, Inc. + +Gord Matzigkeit made some early contributions. John Bazik wrote `fastcwd', the Perl subroutine for computing the -current working directory. +current working directory (later removed in 1.3.3). -Charles Briscoe-Smith wrote the fix to prevent -stow -D / stow -R removing initially-empty directories. +Charles Briscoe-Smith wrote the fix to prevent +stow -D / stow -R removing initially-empty directories (mentioned +in 1.3.3 section of NEWS). -Adam Lackorzynski wrote the fix to prevente +Adam Lackorzynski wrote the fix to prevent the generation of wrong links if there are links in the stow directory. -Stow was maintained by Guillaume Morin up to November 2007. +Stow was maintained by Guillaume Morin up to November +2007. Guillaume originally imported the source code into the Savannah +CVS repository on 2001/12/24 with the tag "v1_3_2". This history was +later imported into git as described below. -Kahlil (Kal) Hodgson performed a major rewrite -inorder to implement: +1.3.3 was the last release of the 1.x series. The CVS history +contains a few commits after 1.3.3 preparing for a 1.3.4 release which +was never published (see the "import-cvs" tag in git). - 1. defered operations, +Between 2007 and 2009, a small team of people collaborated on a +private in-house project on Stow: + + https://lists.gnu.org/archive/html/stow-devel/2011-11/msg00003.html + +Kahlil (Kal) Hodgson performed a major +rewrite in order to implement: + + 1. deferred operations, 2. option parsing via Getopt::Long, - 3. options to support shared files, + 3. options to support shared files, 4. support for multiple operations per invocation, - 5. default command line arguments via '.stowrc' and '~/.stowrc' files, + 5. default command line arguments via '.stowrc' and '~/.stowrc' files, 6. better cooperation between multiple stow directories, - 7. a test suite (and support code) to ensure that everything still works. + 7. a test suite (and support code) to ensure that everything still works. -As these changes required a dramatic reorganisation of the code, very little -was left untouched, and so stows major version was bumped up to version 2. +As these changes required a dramatic reorganisation of the code, very +little was left untouched, and so Stow's major version number was +bumped up to 2. Austin Wood and Chris +Hoobin helped clean up the +documentation for the new 2.x.y series, and created the texi2man +script. -Austin Wood and Chris Hoobin - helped clean up the documentation for -version 2 and created the texi2man script. +Kahlil obtained permission to donate these changes back to GNU. The +Subversion history from this period is no longer accessible, so the +breakdown of the individual changes to the source code between 1.3.3 +and the unreleased 2.0.2 version have been lost; however some details +are still visible in ChangeLog.OLD, which also acknowledges the +contributions of Geoffrey Giesemann and Emil Mikulc. -Stow is currently maintained by Kahlil (Kal) Hodgson . +Sometime after this, Troy Will took over maintainership and imported +the unreleased 2.0.2 code base as the original root commit into +Savannah git repository. + +On 25th November 2011, Adam Spiers took over +maintainership. He imported the CVS history into the Savannah git +repository, grafting it onto the previous root commit imported by +Troy, and tagged this as v2.0.2: + + https://lists.gnu.org/archive/html/stow-devel/2011-11/msg00001.html + https://lists.gnu.org/archive/html/stow-devel/2011-11/msg00002.html + +refactored the backend code into new Stow.pm and Stow/Util.pm modules +providing an OO interface, tightened up the test suite, added support +for ignore lists, `make test', and distribution via CPAN, and cleaned +up numerous other minor issues. + +These changes were included in 2.1.0, which was the first official +release since 1.3.3 in 2002. + +Stow is currently maintained by Adam Spiers. diff --git a/Build.PL b/Build.PL new file mode 100644 index 0000000..c21d767 --- /dev/null +++ b/Build.PL @@ -0,0 +1,102 @@ +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +use strict; +use warnings; + +use Module::Build; + +# These are required by the test suite. +use lib "t"; +use lib "bin"; + +my $build = Module::Build->new( + module_name => 'Stow', + keywords => [ qw/stow symlink software package management install/ ], + license => 'gpl', + + # Module::Build forces us to use v1.4 of the CPAN Meta Spec: + # https://rt.cpan.org/Ticket/Display.html?id=71502 + # 'meta-spec' => { + # version => '2.0', + # url => 'http://search.cpan.org/perldoc?CPAN::Meta::Spec', + # }, + meta_add => { + resources => { + license => 'http://www.gnu.org/licenses/gpl-2.0.html' , + homepage => 'https://savannah.gnu.org/projects/stow', + + # Module::Build forces us to use v1.4 of the CPAN Meta Spec: + # https://rt.cpan.org/Ticket/Display.html?id=71502 + # bugtracker => { + # web => 'http://rt.cpan.org/Public/Dist/Display.html?Name=Stow', + # mailto => 'stow-devel@gnu.org', + # }, + #bugtracker => 'http://rt.cpan.org/Public/Dist/Display.html?Name=Stow', + + # Module::Build forces us to use v1.4 of the CPAN Meta Spec: + # https://rt.cpan.org/Ticket/Display.html?id=71502 + # repository => { + # url => 'git://git.savannah.gnu.org/stow.git', + # web => 'https://savannah.gnu.org/git/?group=stow', + # type => 'git', + # }, + repository => 'git://git.savannah.gnu.org/stow.git', + }, + }, + requires => { + 'perl' => '5.006', + 'Carp' => 0, + 'IO::File' => 0, + }, + script_files => [ 'bin/stow', 'bin/chkstow' ], + all_from => 'lib/Stow.pm.in', + configure_requires => { + 'Module::Build' => 0, + }, + build_requires => { + 'Test::More' => 0, + 'Test::Output' => 0, + 'IO::Scalar' => 0, + }, +); + +if (system('grep', '-q', '^use lib ', 'bin/stow') >> 8 == 0) { + die <<'EOF'; + +ERROR: bin/stow contains 'use lib' line which could interfere +with CPAN-style installation via Module::Build. To avoid this, +you should run ./configure with parameters which result in +--with-pmdir's value being in Perl's built-in @INC, and then run +'make' (NOT 'make install') to regenerate bin/stow, e.g. + + eval `perl -V:siteprefix` + ./configure --prefix=$siteprefix && make + +or + + ./configure --with-pmdir=`PERL5LIB= perl -le 'print $INC[0]'` && make + +Then re-run this script. + +Note that these parameters are chosen purely to regenerate +bin/stow without a 'use lib' line, so don't run 'make install' +while Stow is configured in this way unless you really want an +installation using these parameters. + +EOF +} + +$build->create_build_script(); diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..1752a8e --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,123 @@ +Contributing to GNU Stow +======================== + +Development of Stow, and GNU in general, is a volunteer effort, and +you can contribute. If you'd like to get involved, it's a good idea to join +the [stow-devel](https://lists.gnu.org/mailman/listinfo/stow-devel) +mailing list. + +Bug reporting +------------- + +Please follow the procedure described in [the "Reporting Bugs" +section](https://www.gnu.org/software/stow/manual/html_node/Reporting-Bugs.html#Reporting-Bugs) +of [the manual](README.md#documentation). + +Development +----------- + +For [development sources](https://savannah.gnu.org/git/?group=stow) +and other information, please see the [Stow project +page](http://savannah.gnu.org/projects/stow/) at +[savannah.gnu.org](http://savannah.gnu.org). + +There is also a +[stow-devel](https://lists.gnu.org/mailman/listinfo/stow-devel) +mailing list (see [Mailing lists](README.md#mailing-lists)). + +Please be aware that all program source files (excluding the test +suite) end in `.in`, and are pre-processed by `Makefile` into +corresponding files with that prefix stripped before execution. So if +you want to test any modifications to the source, make sure that you +change the `.in` files and then run `make` to regenerate the +pre-processed versions before doing any testing. To avoid forgetting +(which can potentially waste a lot of time debugging the wrong code), +you can automatically run `make` in an infinite loop every second via: + + make watch + +(You could even use fancier approaches like +[`inotifywait(1)`](https://www.man7.org/linux/man-pages/man1/inotifywait.1.html) +or [Guard](https://guardgem.org/). But those are probably overkill in +this case where the simple `while` loop is plenty good enough.) + +Testing +~~~~~~~ + +The test suite can be found in the [`t/`](t/) subdirectory. You can +run the test suite via: + + make check + +Tests can be run individually as follows. First you have to ensure +that the `t/`, `bin/`, and `lib/` directories are on Perl's search path. +Assuming that you run all tests from the root of the repository tree, +this will do the job: + + export PERL5LIB=t:bin:lib + +(Not all tests require all of these, but it's safer to include all of +them.) + +Secondly, be aware that if you want to test modifications to the +source files, you will need to run `make watch`, or `make` before each +test run as explained above. + +Now running an individual test is as simple as: + + perl t/chkstow.t + +or with a given debugging verbosity corresponding to the `-v` / `--verbose` +command-line option: + + TEST_VERBOSE=4 perl t/chkstow.t + +The [`prove(1)` test runner](https://perldoc.perl.org/prove) is another +good alternative which provides several handy extra features. Invocation +is very similar, e.g.: + + prove t/stow.t + +or to run the whole suite: + + prove + +However currently there is an issue where this interferes with +`TEST_VERBOSE`. + +If you want to create test files for experimentation, it is +recommended to put them in a subdirectory called `playground/` since +this will be automatically ignored by git and the build process, +avoiding any undesirable complications. + +Test coverage +~~~~~~~~~~~~~ + +To view test coverage reports, first ensure that +[`Devel::Cover`](https://metacpan.org/dist/Devel-Cover) is installed. +Then type `make coverage`. The last lines of the output should +include something like: + + HTML output written to /home/user/path/to/stow/cover_db/coverage.html + +which you can open in a web browser to view the report. + +Translating Stow +---------------- + +Stow is not currently multi-lingual, but patches would be very +gratefully accepted. Please e-mail +[stow-devel](https://lists.gnu.org/mailman/listinfo/stow-devel) if you +intend to work on this. + +Maintainers +----------- + +Stow is currently being maintained by Adam Spiers. Please use [the +mailing lists](README.md#mailing-lists). + +Helping the GNU project +----------------------- + +For more general information, please read [How to help +GNU](https://www.gnu.org/help/). diff --git a/COPYING b/COPYING index 623b625..f288702 100644 --- a/COPYING +++ b/COPYING @@ -1,285 +1,626 @@ - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Copyright (C) 2007 Free Software Foundation, Inc. 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No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not -excuse you from the conditions of this License. If you cannot -distribute so as to satisfy simultaneously your obligations under this -License and any other pertinent obligations, then as a consequence you -may not distribute the Program at all. For example, if a patent -license would not permit royalty-free redistribution of the Program by -all those who receive copies directly or indirectly through you, then -the only way you could satisfy both it and this License would be to -refrain entirely from distribution of the Program. +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. 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Many people have made -generous contributions to the wide range of software distributed -through that system in reliance on consistent application of that -system; it is up to the author/donor to decide if he or she is willing -to distribute software through any other system and a licensee cannot -impose that choice. + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. -This section is intended to make thoroughly clear what is believed to -be a consequence of the rest of this License. - - 8. If the distribution and/or use of the Program is restricted in -certain countries either by patents or by copyrighted interfaces, the -original copyright holder who places the Program under this License -may add an explicit geographical distribution limitation excluding -those countries, so that distribution is permitted only in or among -countries not thus excluded. In such case, this License incorporates -the limitation as if written in the body of this License. + 14. Revised Versions of this License. - 9. The Free Software Foundation may publish revised and/or new versions -of the General Public License from time to time. Such new versions will + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. -Each version is given a distinguishing version number. If the Program -specifies a version number of this License which applies to it and "any -later version", you have the option of following the terms and conditions -either of that version or of any later version published by the Free -Software Foundation. If the Program does not specify a version number of -this License, you may choose any version ever published by the Free Software -Foundation. + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. - 10. If you wish to incorporate parts of the Program into other free -programs whose distribution conditions are different, write to the author -to ask for permission. For software which is copyrighted by the Free -Software Foundation, write to the Free Software Foundation; we sometimes -make exceptions for this. Our decision will be guided by the two goals -of preserving the free status of all derivatives of our free software and -of promoting the sharing and reuse of software generally. + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. - NO WARRANTY + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. - 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY -FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN -OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES -PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED -OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS -TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE -PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, -REPAIR OR CORRECTION. + 15. Disclaimer of Warranty. - 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING -WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR -REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, -INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING -OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED -TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY -YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER -PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE -POSSIBILITY OF SUCH DAMAGES. + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it @@ -287,15 +628,15 @@ free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively -convey the exclusion of warranty; and each file should have at least +state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) - This program is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -304,37 +645,30 @@ the "copyright" line and a pointer to where the full notice is found. GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - + along with this program. If not, see . Also add information on how to contact you by electronic and paper mail. -If the program is interactive, make it output a short notice like this -when it starts in an interactive mode: + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: - Gnomovision version 69, Copyright (C) year name of author - Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, the commands you use may -be called something other than `show w' and `show c'; they could even be -mouse-clicks or menu items--whatever suits your program. +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". -You should also get your employer (if you work as a programmer) or your -school, if any, to sign a "copyright disclaimer" for the program, if -necessary. Here is a sample; alter the names: + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. - Yoyodyne, Inc., hereby disclaims all copyright interest in the program - `Gnomovision' (which makes passes at compilers) written by James Hacker. - - , 1 April 1989 - Ty Coon, President of Vice - -This General Public License does not permit incorporating your program into -proprietary programs. If your program is a subroutine library, you may -consider it more useful to permit linking proprietary applications with the -library. If this is what you want to do, use the GNU Library General -Public License instead of this License. + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/INSTALL b/INSTALL deleted file mode 100644 index 21358ba..0000000 --- a/INSTALL +++ /dev/null @@ -1,108 +0,0 @@ -Basic Installation -================== - -Stow is a Perl script. You must have Perl 5.005 or later in order for -it to run. - -The steps in building stow are: - -1. `cd' to the directory containing the source code (and this file) - and type `./configure' to configure stow for your system. This - step will attempt to locate your copy of perl and set its location - `Makefile.in'. - -2. Type `make' to create `stow' and `'stow.info'. If perl could not - be found by `./configure', you'll have to edit line 1 of `stow' - from `#!false' to `#!/path/to/perl' (where /path/to/perl is wherever - perl will be found when stow runs). - -3. Type `make install' to install `stow' and `stow.info'. - -4. You can remove the generated files from the source code directory - by typing `make clean'. To also remove the files that `configure' - created (so you can compile the package for a different computer), - type `make distclean'. There is also a `make maintainer-clean' - target, but that is intended mainly for stow's developers. If you - use it, you may have to get all sorts of other programs in order - to regenerate files that came with the distribution. - -Installation Names -================== - -By default, `make install' will install the package's files in -`/usr/local/bin' and `/usr/local/info'. You can specify an -installation prefix other than `/usr/local' by giving `configure' the -option `--prefix=PATH'. - -If the package supports it, you can cause programs to be installed -with an extra prefix or suffix on their names by giving `configure' -the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. - -Since `stow' is concerned with separating a package's installation -tree from its run-time tree, you might want to install `stow' into a -directory such as `/usr/local/stow/stow' but have it run out of -`/usr/local'. Do this by giving the run-time prefix (e.g., -/usr/local) to configure as described above; then run `make'; then run -`make install prefix=/usr/local/stow/stow'. For more information on -this technique, see the Stow manual. - -The configuration system -======================== - -The `configure' shell script attempts to guess correct values for -various system-dependent variables used during compilation. It uses -those values to create a `Makefile' and to create the `stow' script -itself, using Makefile.in and stow.in as templates. Finally, it -creates a shell script `config.status' that you can run in the future -to recreate the current configuration, a file `config.cache' that -saves the results of its tests to speed up reconfiguring, and a file -`config.log' containing other output. - -The file `configure.ac' is used to create `configure' by a program -called `autoconf'. You only need `configure.ac' if you want to change -it or regenerate `configure' using a newer version of `autoconf'. - -The file `Makefile.am' is used to create `Makefile.in' by a program -called `automake'. You only need `Makefile.am' if you want to change -it or regenerate `Makefile.in' using a newer version of `automake'. - -Sharing Defaults -================ - -If you want to set default values for `configure' scripts to share, -you can create a site shell script called `config.site' that gives -default values for variables like `CC', `cache_file', and `prefix'. -`configure' looks for `PREFIX/share/config.site' if it exists, then -`PREFIX/etc/config.site' if it exists. Or, you can set the -`CONFIG_SITE' environment variable to the location of the site script. -A warning: not all `configure' scripts look for a site script. - -Operation Controls -================== - - `configure' recognizes the following options to control how it -operates. - -`--cache-file=FILE' - Use and save the results of the tests in FILE instead of - `./config.cache'. Set FILE to `/dev/null' to disable caching, for - debugging `configure'. - -`--help' - Print a summary of the options to `configure', and exit. - -`--quiet' -`--silent' -`-q' - Do not print messages saying which checks are being made. - -`--srcdir=DIR' - Look for the package's source code in directory DIR. Usually - `configure' can determine that directory automatically. - -`--version' - Print the version of Autoconf used to generate the `configure' - script, and exit. - -`configure' also accepts some other, not widely useful, options. - diff --git a/INSTALL.md b/INSTALL.md new file mode 100644 index 0000000..a85ad87 --- /dev/null +++ b/INSTALL.md @@ -0,0 +1,202 @@ +How to install GNU Stow +======================= + +Prerequisites +------------- + +Stow is a collection of Perl scripts and modules. You must have Perl +5.6.1 or later in order for it to run. The test suite also requires +the `Test::More` and `Test::Output` modules which can be obtained from +CPAN. They are also available as packages in some of the GNU/Linux +distributions. + +Installation methods +-------------------- + +Stow can either be installed via the standard GNU Autotools procedure +(`./configure && make install`) or since 2.1.0, via CPAN-style via +Module::Build. + +Advantages of the Autotools approach: + + - It's arguably more flexible. + + - It will install the documentation in Info, HTML, man, and PDF + formats. + +Advantages of the `Module::Build` approach: + + - It's more in keeping with the standard way to distribute CPAN + modules. + + - It performs dependency checking to ensure you have the necessary + Perl modules installed. + +Both approaches are described in detail below. However if you are +building from the git repository rather than an official release, +you first need to perform some extra steps: + +Preparatory steps required only when building from git +------------------------------------------------------ + +`configure` and `Makefile` are included in official releases of Stow, +but they are deliberately omitted from the git repository because they +are autogenerated. Therefore if you are installing directly from git, +you first need to generate them as follows. + +First `cd` to the directory containing the source code (and this +file), and then run: + + autoreconf -iv + +If this runs successfully then you are ready to continue with one of +the two installation methods below. + +Basic Installation via `Module::Build` +-------------------------------------- + +The steps in building Stow are: + +1. `cd` to the directory containing the source code (and this file). + +2. If you are building from an official GNU release tarball, type + `./configure && make` to configure stow for your system. If you + are building from a CPAN tarball, this step can be skipped. + + If `make` warns that the Perl module installation directory is + not in `@INC`, then you should run: + + eval `perl -V:siteprefix` + ./configure --prefix=$siteprefix && make + + to avoid a superfluous `use lib` line in your stow executable. + +3. Type `perl Build.PL`. + +4. Type `./Build install` to install the various files. As noted + above, this installs fewer files than the Autotools installation. + +Basic Installation via Autotools +-------------------------------- + +The steps in building Stow are: + +1. `cd` to the directory containing the source code (and this file). + +2. Type `./configure` to configure stow for your system. This step + will attempt to locate your copy of perl and set its location in + `Makefile.in`. You can use the normal arguments to change the + default installation paths (see below); additionally you can use + the + + --with-pmdir=/path/to/perl/modules + + option to manually choose where the Perl modules get installed. + However, if you don't, the `configure` script will go to great + lengths to try to choose a sensible default. + +3. Type `make install` to install the various files. If the chosen + installation directory for Perl modules is not included in Perl's + built-in `@INC` search path, the Makefile rules will automatically + insert a + + use lib "..."; + + line into the generated stow script to ensure that it can always + locate the Perl modules without needing to manually set `PERL5LIB`. + +4. You can remove the generated files from the source code directory + by typing `make clean`. To also remove the files that `configure` + created (so you can compile the package for a different computer), + type `make distclean`. There is also a `make maintainer-clean` + target, but that is intended mainly for stow's developers. If you + use it, you may have to get all sorts of other programs in order + to regenerate files that came with the distribution. + +Installation Names +------------------ + +By default, `make install` will install the package's files in +`/usr/local/bin` and `/usr/local/info`. You can specify an +installation prefix other than `/usr/local` by giving `configure` the +option `--prefix=PATH`. + +If the package supports it, you can cause programs to be installed +with an extra prefix or suffix on their names by giving `configure` +the option `--program-prefix=PREFIX` or `--program-suffix=SUFFIX`. + +Since `stow` is concerned with separating a package's installation +tree from its run-time tree, you might want to install `stow` into a +directory such as `/usr/local/stow/stow` but have it run out of +`/usr/local`. Do this by giving the run-time prefix (e.g., +/usr/local) to configure as described above; then run `make`; then run +`make install prefix=/usr/local/stow/stow`. For more information on +this technique, see the Stow manual. + +The configuration system +------------------------ + +The `configure` shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a `Makefile` and to create the `stow` script +itself, using Makefile.in and stow.in as templates. Finally, it +creates a shell script `config.status` that you can run in the future +to recreate the current configuration, a file `config.cache` that +saves the results of its tests to speed up reconfiguring, and a file +`config.log` containing other output. + +The file `configure.ac` is used to create `configure` by a program +called `autoconf`. You only need `configure.ac` if you want to change +it or regenerate `configure` using a newer version of `autoconf`. + +The file `Makefile.am` is used to create `Makefile.in` by a program +called `automake`. You only need `Makefile.am` if you want to change +it or regenerate `Makefile.in` using a newer version of `automake`. + +Sharing Defaults +---------------- + +If you want to set default values for `configure` scripts to share, +you can create a site shell script called `config.site` that gives +default values for variables like `CC`, `cache_file`, and `prefix`. +`configure` looks for `PREFIX/share/config.site` if it exists, then +`PREFIX/etc/config.site` if it exists. Or, you can set the +`CONFIG_SITE` environment variable to the location of the site script. +A warning: not all `configure` scripts look for a site script. + +Operation Controls +------------------ + +`configure` recognizes the following options to control how it +operates. + +`--cache-file=FILE` + Use and save the results of the tests in FILE instead of + `./config.cache`. Set FILE to `/dev/null` to disable caching, for + debugging `configure`. + +`--help` + Print a summary of the options to `configure`, and exit. + +`--quiet` +`--silent` +`-q` + Do not print messages saying which checks are being made. + +`--srcdir=DIR` + Look for the package's source code in directory DIR. Usually + `configure` can determine that directory automatically. + +`--version` + Print the version of Autoconf used to generate the `configure` + script, and exit. + +`configure` also accepts some other, not widely useful, options. + +License for this file +--------------------- + +Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without any warranty. diff --git a/MANIFEST b/MANIFEST new file mode 100644 index 0000000..09cb2bf --- /dev/null +++ b/MANIFEST @@ -0,0 +1,57 @@ +AUTHORS +aclocal.m4 +automake/install-sh +automake/mdate-sh +automake/missing +automake/texinfo.tex +bin/chkstow +bin/chkstow.in +bin/stow +bin/stow.in +Build.PL +ChangeLog +configure +configure.ac +CONTRIBUTING.md +COPYING +default-ignore-list +doc/ChangeLog.OLD +doc/manual-single.html +doc/manual.pdf +doc/stow.8 +doc/stow.info +doc/stow.texi +doc/version.texi +INSTALL.md +lib/Stow.pm +lib/Stow.pm.in +lib/Stow/Util.pm +lib/Stow/Util.pm.in +Makefile.am +Makefile.in +MANIFEST This list of files +MANIFEST.SKIP +NEWS +README.md +t/chkstow.t +t/cleanup_invalid_links.t +t/cli.t +t/cli_options.t +t/defer.t +t/dotfiles.t +t/examples.t +t/find_stowed_path.t +t/foldable.t +t/ignore.t +t/join_paths.t +t/link_dest_within_stow_dir.t +t/parent.t +t/stow.t +t/rc_options.t +t/testutil.pm +t/unstow.t +tools/get-version +THANKS +TODO +META.yml +META.json diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP new file mode 100644 index 0000000..522b3fd --- /dev/null +++ b/MANIFEST.SKIP @@ -0,0 +1,96 @@ + +#!start included /usr/share/perl5/ExtUtils/MANIFEST.SKIP +# Avoid version control files. +\bRCS\b +\bCVS\b +\bSCCS\b +,v$ +\B\.svn\b +\B\.git\b +\B\.gitignore\b +\b_darcs\b +\B\.cvsignore$ +^\.mrdownload$ + +# Avoid VMS specific MakeMaker generated files +\bDescrip.MMS$ +\bDESCRIP.MMS$ +\bdescrip.mms$ + +# Avoid Makemaker generated and utility files. +\bMANIFEST\.bak +\bMakefile$ +\bblib/ +\bMakeMaker-\d +\bpm_to_blib\.ts$ +\bpm_to_blib$ +\bblibdirs\.ts$ # 6.18 through 6.25 generated this + +# Avoid Module::Build generated and utility files. +\bBuild$ +\b_build/ +\bBuild.bat$ +\bBuild.COM$ +\bBUILD.COM$ +\bbuild.com$ + +# Avoid temp and backup files. +~$ +\.old$ +\#$ +\b\.# +\.bak$ +\.tmp$ +\.# +\.rej$ +\.orig$ + +# Avoid OS-specific files/dirs +# Mac OSX metadata +\B\.DS_Store +# Mac OSX SMB mount metadata files +\B\._ + +# Avoid Devel::Cover files. +\bcover_db\b +#!end included /usr/share/perl5/ExtUtils/MANIFEST.SKIP + +# Avoid configuration metadata file +^MYMETA\. + +# Avoid Module::Build generated and utility files. +\bBuild$ +\bBuild.bat$ +\b_build +\bBuild.COM$ +\bBUILD.COM$ +\bbuild.com$ +^MANIFEST\.SKIP + +# Avoid archives of this distribution +\b[sS]tow-v?[\d\.\_]+ + +# Avoid autotools stuff +^aclocal.m4$ +^automake/ +^autom4te\.cache/.+$ +^config\.(log|status)$ +^doc/\.dirstamp$ +^doc/manual-single-old-texi2html\.html +^doc/manual-single-texi2html-wrapper\.html +^doc/manual-split/ +^doc/stamp-vti$ +^doc/HOWTO-RELEASE$ + +# Avoid test files +tmp-testing-trees* +^.coveralls.yml +^.github/workflows/ +^.travis.yml +^docker/ +^[a-zA-Z]*-docker.sh +^playground/ + +# Avoid development config +^.dir-locals.el +^.dumbjump diff --git a/META.json b/META.json new file mode 100644 index 0000000..a94e94f --- /dev/null +++ b/META.json @@ -0,0 +1,60 @@ +{ + "abstract" : "manage farms of symbolic links", + "author" : [ + "unknown" + ], + "dynamic_config" : 1, + "generated_by" : "Module::Build version 0.4234", + "license" : [ + "gpl_1" + ], + "meta-spec" : { + "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", + "version" : 2 + }, + "name" : "Stow", + "prereqs" : { + "build" : { + "requires" : { + "IO::Scalar" : "0", + "Test::More" : "0", + "Test::Output" : "0" + } + }, + "configure" : { + "requires" : { + "Module::Build" : "0" + } + }, + "runtime" : { + "requires" : { + "Carp" : "0", + "IO::File" : "0", + "perl" : "5.006" + } + } + }, + "provides" : { + "Stow" : { + "file" : "lib/Stow.pm", + "version" : "v2.4.0" + }, + "Stow::Util" : { + "file" : "lib/Stow/Util.pm", + "version" : "v2.4.0" + } + }, + "release_status" : "stable", + "resources" : { + "homepage" : "https://savannah.gnu.org/projects/stow", + "license" : [ + "http://www.gnu.org/licenses/gpl-2.0.html" + ], + "repository" : { + "type" : "git", + "url" : "git://git.savannah.gnu.org/stow.git" + } + }, + "version" : "v2.4.0", + "x_serialization_backend" : "JSON::PP version 4.16" +} diff --git a/META.yml b/META.yml new file mode 100644 index 0000000..f59b25b --- /dev/null +++ b/META.yml @@ -0,0 +1,34 @@ +--- +abstract: 'manage farms of symbolic links' +author: + - unknown +build_requires: + IO::Scalar: '0' + Test::More: '0' + Test::Output: '0' +configure_requires: + Module::Build: '0' +dynamic_config: 1 +generated_by: 'Module::Build version 0.4234, CPAN::Meta::Converter version 2.150010' +license: gpl +meta-spec: + url: http://module-build.sourceforge.net/META-spec-v1.4.html + version: '1.4' +name: Stow +provides: + Stow: + file: lib/Stow.pm + version: v2.4.0 + Stow::Util: + file: lib/Stow/Util.pm + version: v2.4.0 +requires: + Carp: '0' + IO::File: '0' + perl: '5.006' +resources: + homepage: https://savannah.gnu.org/projects/stow + license: http://www.gnu.org/licenses/gpl-2.0.html + repository: git://git.savannah.gnu.org/stow.git +version: v2.4.0 +x_serialization_backend: 'CPAN::Meta::YAML version 0.018' diff --git a/Makefile.am b/Makefile.am index 8b549ad..43d7f3b 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1,54 +1,332 @@ +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + ## Process this file with Automake to produce Makefile.in -bin_SCRIPTS = stow chkstow -info_TEXINFOS = stow.texi -man8_MANS = stow.8 -dist_man_MANS = stow.8 -dist_doc_DATA = README +bin_SCRIPTS = bin/stow bin/chkstow +info_TEXINFOS = doc/stow.texi +dist_man_MANS = doc/stow.8 +PDF = doc/manual.pdf +HTML = doc/manual-single.html +dist_doc_DATA = \ + README.md INSTALL.md \ + $(PDF) $(HTML) doc/version.texi \ + ChangeLog doc/ChangeLog.OLD -TESTS_ENVIRONMENT=$(PERL) -I $(top_srcdir) -TESTS = \ - t/cleanup_invalid_links.t \ - t/defer.t \ - t/examples.t \ - t/find_stowed_path.t \ - t/foldable.t \ - t/join_paths.t \ - t/parent.t \ - t/relative_path.t \ - t/stow_contents.t \ - t/stow.t \ - t/unstow_contents_orig.t \ - t/unstow_contents.t \ - t/chkstow.t +# automake magic to define where *_DATA files get installed: +pmdir = $(PMDIR) +pmstowdir = $(pmdir)/Stow -AUTOMAKE_OPTIONS = dist-shar -EXTRA_DIST = $(TESTS) t/util.pm stow.in -CLEANFILES = $(bin_SCRIPTS) +pm_DATA = lib/Stow.pm +pmstow_DATA = lib/Stow/Util.pm -# clean up files left behind by test suite +export TEXI2DVI_BUILD_MODE = clean +AM_MAKEINFOFLAGS = -I $(srcdir) + +# We require this -I parameter to ensure that the include of the +# default ignore list in the manual works correctly, even when the +# manual is being built via make distcheck from a different directory. +# Unfortunately this is the only way to do it: +# +# https://lists.gnu.org/archive/html/bug-automake/2008-09/msg00040.html +# +# even though it annoyingly produces a warning with the -Wall option +# to AM_INIT_AUTOMAKE which has to be silenced via -Wno-override. +TEXI2DVI = texi2dvi $(AM_MAKEINFOFLAGS) + +DEFAULT_IGNORE_LIST = $(srcdir)/default-ignore-list + +doc_deps = $(info_TEXINFOS) doc/version.texi $(DEFAULT_IGNORE_LIST) + +TESTS_DIR = $(srcdir)/t +TESTS_OUT = tmp-testing-trees tmp-testing-trees-compat +TESTS_ENVIRONMENT = $(PERL) -Ibin -Ilib -I$(TESTS_DIR) + +# This is a kind of hack; TESTS needs to be set to ensure that the +# `check-am' target makes check-TESTS, but we override check-TESTS +# so it doesn't really matter what it's set to, as long as it already +# exists (otherwise automake will try to build it). +TESTS = t + +# GNU autotools standardised on the 'check' target, but CPAN (and the +# rest of the world) standardised on the 'test' target. +test: check + +# required in vpath mode to ensure $build/t/ exists +check_DATA = $(TESTS_OUT) + +# Test::Harness produces cleaner output than automake's default test +# harness, albeit without the pretty colours provided by the +# `color-tests' AM_INIT_AUTOMAKE option. This also dodges having to +# set TESTS to the full list of tests, which is good because automake +# doesn't support wildcards, and so it would be too easy to forget to +# add a new one to the list. +# +# Note that automake's `check' rule cannot be overridden +# for some weird reason: +# +# https://lists.gnu.org/archive/html/automake/2011-09/msg00029.html +# +# so we override check-TESTS instead which is where the real work is +# done anyway. Unfortunately this produces a warning with the -Wall +# option to AM_INIT_AUTOMAKE which has to be silenced via +# -Wno-override. +check-TESTS: + dir=$(TESTS_DIR); \ + $(TESTS_ENVIRONMENT) -MTest::Harness -e 'runtests(@ARGV)' "$${dir#./}"/*.t + +coverage: + PERL5OPT=-MDevel::Cover $(MAKE) check-TESTS + cover + +$(TESTS_OUT): + mkdir -p $@ + +CPAN_FILES = MANIFEST MANIFEST.SKIP Build.PL META.yml META.json +EXTRA_DIST = \ + bin/stow.in bin/chkstow.in lib/Stow.pm.in lib/Stow/Util.pm.in \ + doc/manual-split \ + $(TESTS) t/testutil.pm \ + $(DEFAULT_IGNORE_LIST) \ + $(CPAN_FILES) +CLEANFILES = $(bin_SCRIPTS) $(pm_DATA) $(pmstow_DATA) +DISTCLEANFILES = Makefile.in configure Build MYMETA.* +MAINTAINERCLEANFILES = $(dist_man_MANS) $(HTML) $(PDF) ChangeLog + +# clean up auto-generated files clean-local: - -rm -rf t/target t/stow + -rm -rf $(TESTS_OUT) +maintainer-clean-local: + -rm -rf doc/manual-split cover_db # this is more explicit and reliable than the config file trick -edit = sed -e 's|[@]PERL[@]|$(PERL)|g' \ - -e 's|[@]PACKAGE[@]|$(PACKAGE)|g' \ - -e 's|[@]VERSION[@]|$(VERSION)|g' +edit = sed -e 's|[@]PERL[@]|$(PERL)|g' \ + -e 's|[@]VERSION[@]|$(VERSION)|g' \ + -e "s|[@]USE_LIB_PMDIR[@]|$$use_lib_pmdir|g" -stow: stow.in Makefile +pmdir_in_INC = \ + PERL5LIB= $(PERL) -V | \ + awk '/@INC/ {p=1; next} p==1 {print $$1}' | \ + grep -F -x -q "$(pmdir)" + +calc_use_lib_pmdir = \ + pmdir="$(pmdir)"; \ + if [ $(FINDBIN) = yes ]; then \ + use_lib_pmdir="use FindBin; use lib \"\$$FindBin::Bin/../$${pmdir\#$(prefix)/}\";"; \ + elif $(pmdir_in_INC); then \ + use_lib_pmdir=""; \ + else \ + use_lib_pmdir="use lib \"$(pmdir)\";"; \ + fi + +check_pmdir = \ + echo; \ + echo "\# Perl modules will be installed to $(pmdir)"; \ + echo "\# "; \ + if $(pmdir_in_INC); then \ + echo "\# This is in $(PERL)'s built-in @INC, so everything"; \ + echo "\# should work fine with no extra effort."; \ + else \ + echo "\# This is not in $(PERL)'s built-in @INC, so the"; \ + echo "\# front-end scripts will have an appropriate \"use lib\""; \ + echo "\# line inserted to compensate."; \ + fi; \ + echo + +bin/stow: bin/stow.in Makefile.am + [ -d bin ] || mkdir bin # required in vpath mode + @$(check_pmdir) + @$(calc_use_lib_pmdir); \ $(edit) < $< > $@ + @echo "Generated $@ from $<" chmod +x $@ -chkstow: chkstow.in Makefile - $(edit) < $< > $@ +bin/chkstow: bin/chkstow.in Makefile.am + @[ -d bin ] || mkdir bin # required in vpath mode + @$(edit) < $< > $@ + @echo "Generated $@ from $<" chmod +x $@ -# The rules for manual.html and manual.texi are only used by -# the developer -manual.html: manual.texi - -rm -f $@ - texi2html -expandinfo -menu -monolithic -verbose $< +lib/Stow.pm: lib/Stow.pm.in $(DEFAULT_IGNORE_LIST) Makefile.am + @[ -d lib ] || mkdir lib # required in vpath mode + @( $(edit) < $<; cat $(DEFAULT_IGNORE_LIST) ) > $@ + @echo "Generated $@ from $< and $(DEFAULT_IGNORE_LIST)" -manual.texi: stow.texi +lib/Stow/Util.pm: lib/Stow/Util.pm.in Makefile.am + @[ -d lib/Stow ] || mkdir -p lib/Stow # required in vpath mode + @$(edit) < $< > $@ + @echo "Generated $@ from $<" + +############################################################################## +# The below rules should only be needed by developers. +############################################################################## + +cpanm: + cpanm --quiet --installdeps --notest .; \ + CPANM_RESULT=$$?; \ + if [ $$CPANM_RESULT != 0 ]; then \ + echo ---------------------------------------------------; \ + cat ~/.cpanm/build.log; \ + echo ---------------------------------------------------; \ + exit $$CPANM_RESULT; \ + fi + +doc/stow.8: bin/stow.in Makefile.am + [ -d doc ] || mkdir doc # required in vpath mode + $(edit) < $< | pod2man --name stow --section 8 > $@ + +# We use automake's built-in rule to generate stow.info. The built-in +# rules would also generate doc/stow.html and doc/stow.pdf, but after +# installation we want $(docdir) (typically /usr/share/doc/stow/) to +# contain manual-single.html, manual.pdf, and manual-split/*.html, to +# make it explicitly obvious that these files contain the user manual +# rather than some other Stow-related documentation. +# +# If it were not for a troublesome dependency on doc/$(am__dirstamp): +# +# https://lists.gnu.org/archive/html/automake/2011-11/msg00107.html +# +# we could have achieved this using the built-in rules combined with +# install-data-hook to rename from stow.pdf to manual.pdf etc. on +# install. Instead, by overriding the built-in rules with modified +# versions, we can kill both birds with one stone. + +# Generating the single-page HTML version used to be done with the old +# texi2html, which is no longer maintained. This rule is not used, +# but is kept to allow comparing of results during the transition, and +# potentially longer for posterity. +doc/manual-single-old-texi2html.html: $(doc_deps) + texi2html --P=$(srcdir) --output=$@ -expandinfo -menu -monolithic -verbose $< + +# One alternative to the old texi2html approach is to use the texi2html +# wrapper around texi2any which is provided as a partial drop-in replacement: +# +# https://www.gnu.org/software/texinfo/manual/texinfo/html_node/texi2html.html#texi2html +# +# Differences to the old texi2html: +# +# - Doesn't wrap @file{foo} paths with quotes, which looks better. +# - Missing certain sections +doc/manual-single-texi2html-wrapper.html: $(doc_deps) + texi2any -P $(srcdir) --output=$@ --verbose \ + -c TEXI2HTML=1 -c SHOW_MENU=1 -c MONOLITHIC=1 $< + +.PHONY: manual-single-html-all +manual-single-html-all: \ + $(HTML) \ + doc/manual-single-texi2html-wrapper.html \ + doc/manual-single-old-texi2html.html + +# Modern approach using $(MAKEINFOHTML) --no-split +# Differences to the older two approaches: +# +# - Nicer navigation links between sections +$(HTML): $(doc_deps) + [ -d doc ] || mkdir doc # required in vpath mode -rm -f $@ - cp $< $@ + $(MAKEINFOHTML) $(AM_MAKEINFOHTMLFLAGS) $(MAKEINFOFLAGS) -I doc -I $(srcdir)/doc \ + -c USE_TITLEPAGE_FOR_TITLE=1 --no-split -o $@ \ + `test -f 'doc/stow.texi' || echo '$(srcdir)/'`doc/stow.texi + +$(PDF): $(doc_deps) + TEXINPUTS="$(am__TEXINFO_TEX_DIR)$(PATH_SEPARATOR)$$TEXINPUTS" \ + MAKEINFO='$(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I doc -I $(srcdir)/doc' \ + $(TEXI2PDF) -o $@ `test -f 'doc/stow.texi' || echo '$(srcdir)/'`doc/stow.texi + +doc/manual-split: $(doc_deps) + rm -rf $@.new + if $(MAKEINFOHTML) $(AM_MAKEINFOHTMLFLAGS) $(MAKEINFOFLAGS) -I doc -I $(srcdir)/doc \ + -o $@.new `test -f 'doc/stow.texi' || echo '$(srcdir)/'`doc/stow.texi; \ + then \ + rm -rf $@; \ + mv $@.new $@; \ + else \ + rm -Rf $@.new $@; \ + exit 1; \ + fi + +# The split version of the manual is copied to $(docdir)/manual-split +# by install-data-hook. The whole subdirectory is included via +# EXTRA_DIST in order to avoid having to list each file explicitly in +# dist_doc_DATA, since automake doesn't support wildcards, and +# dist_doc_DATA cannot refer to directories while EXTRA_DIST can (go +# figure ...) + +install-data-hook: doc/manual-split + cp -r $(srcdir)/doc/manual-split $(DESTDIR)$(docdir) + +uninstall-hook: + chmod u+w -R $(DESTDIR)$(docdir)/manual-split + rm -rf $(DESTDIR)$(docdir)/manual-split + +# Using install-data-hook has the slightly annoying disadvantage that +# by default the split version of the manual isn't automatically +# rebuilt during development by a simple `make'. A workaround hack +# for this is to piggy-back the dependency onto manual-single.html, +# which *is* automatically rebuilt by `make': +$(HTML): doc/manual-split + +# With the above hack, this probably isn't necessary but is safer to +# keep in anyway: +dist-hook: doc/manual-split + +dist-hook: $(dist_man_MANS) +## If we are creating a distribution from a git checkout, ensure +## the ChangeLog file is in sync the git repository. + if test -d $(top_srcdir)/.git; then \ + rm -f ChangeLog \ + && $(MAKE) $(AM_MAKEFLAGS) ChangeLog \ + && cp -f ChangeLog $(distdir)/ChangeLog; \ + fi + +ChangeLog: doc/ChangeLog.OLD + @if [ -d .git ]; then \ + ( \ + git log \ + --format="format:%ad %aN <%aE>%n%n * %w(70,0,4)%s%+b%n" \ + --name-status \ + v2.0.2..HEAD \ + | sed 's/^\([A-Z]\)\t/ \1 /'; \ + cat $< \ + ) > $@; \ + echo "Rebuilt $@ from git commit history."; \ + else \ + echo "Not in a git repository; can't update ChangeLog."; \ + fi + +# Watch for changes, and if any rebuilds are required, also do a +# make install. +# +# If we solved https://github.com/aspiers/stow/issues/84, we could +# probably ditch this: +watch: + @echo "Watching for changes to program source files ..." + @while true; do \ + if $(MAKE) 2>&1 | \ + grep -vE 'make\[[1-9]\]: (Entering|Leaving) directory ' | \ + grep -v 'Nothing to be done'; \ + then \ + echo; \ + echo "-----------------------------------------------------"; \ + echo "make found things to rebuild; doing $(MAKE) install ..."; \ + echo; \ + $(MAKE) install; \ + echo; \ + echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"; \ + echo; \ + fi; \ + sleep 1; \ + done 2>&1 | \ + grep -vE 'make\[[1-9]\]: (Entering|Leaving) directory ' diff --git a/Makefile.in b/Makefile.in deleted file mode 100644 index 36ccce6..0000000 --- a/Makefile.in +++ /dev/null @@ -1,887 +0,0 @@ -# Makefile.in generated by automake 1.10 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006 Free Software Foundation, Inc. -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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Redundant actions are factored out, -e.g., we don't want to create a link that we will later remove in order to -create a directory. Benefits of this approach +*** --dotfiles now works with directories - 1. Get to see _all_ the conflicts that are blocking an installation: - you don't have to deal with them one at a time. - 2. No operations are be performed if _any_ conflicts are detected: - a failed stow will not leave you with a partially installed - package. - 3. Minimises the set of operations that need to be performed. - 4. Operations are executed as a batch which is much faster - This can be an advantage when upgrading packages on a live system - where you want to minimise the amount of time when the package is - unavailable. + A long-standing bug preventing the --dotfiles option from working + correctly with directories has been fixed. -** The above fixes the false conflict problem mentioned in the info file. + It should also works in combination with the --compat option. -** It also fixes the two bugs mentioned in the man page. +*** Eliminated a spurious warning on unstowing -** Multiple stow directories will now cooperate in folding/unfolding. + 2.3.1 introduced a benign but annoying warning when unstowing + in certain circumstances. It looked like: -** Conflict messages are more uniform and informative. + BUG in find_stowed_path? Absolute/relative mismatch between Stow dir X and path Y -** Verbosity and tracing is more extensive and uniform. + This was caused by erroneous logic, and has now been fixed. -** Implemented option parsing via Getopt::Long. +*** Unstowing logic has been improved in other cases -** Default command line arguments set via '.stowrc' and '~/.stowrc' files. + Several other improvements have been made internally to the + unstowing logic. These changes should all be either invisible + (except for changes to debug output) or improvements, but if you + encounter any unexpected behaviour, please report it as directed + in the manual. -Contents of these files are parsed as though they occurred first on the -command line. +*** Improved debug output -** Support multiple actions per invocation. + Extra output resulting from use of the -v / --verbose flag + now appears in a more logical and understandable way. -In order for this to work, we had to add a new (optional) command line arg -(-S) to specify packages to stow. For example, to update an installation -of emacs you can now do +*** Janitorial tasks - stow -D emacs-21.3 -S emacs-21.4a + Users are not substantially affected by these changes. -which will replace emacs-21.3 with emacs-21.4a. -You can mix and match any number of actions, e.g., +***** Added some more information from the web page to the README - stow -S p1 p2 -D p3 p4 -S p5 -R p6 +***** Made some improvements to the documentation -will unstow p3, p4 and p6, then stow p1, p2, p5 and p6. +***** Improve readability of source code -* New (repeatable) command line arg: --ignore='' + Quite a few extra details have been added in comments to clarify + how the code works. Many variable names have also been + improved. The comments of many Stow class methods have been + converted into Perl POD format. -This suppresses operating on a file matching the regex (suffix), e.g., +***** Added a =CONTRIBUTING.md= file - --ignore='~' --ignore='\.#.*' +***** Add a =watch= target to =Makefile= -will ignore emacs and CVS backup files (suitable for ~/.stowrc file). + =make watch= provides easy continual pre-processing during + development, which reduces the risk of debugging the wrong code. -(I opted for Perl regular expressions because they are more powerful and -easier to implement). +***** Removed texinfo.tex from the distribution -** New (repeatable) command line arg: --defer='' + This eliminates existing and future bit-rot. -This defers stowing a file matching the regex (prefix) if that file is -already stowed to a different package, e.g., +***** Updated aclocal.m4 from 1.15.1 to 1.16.5 - --defer='man' --defer='info' + This mostly just updates copyright notices to 2021, and URLs to https. -will cause stow to skip over pre-existing man and info pages. +***** Replace broken gmane links with links to lists.gnu.org -Equivalently, you could use --defer='man|info' since the argument is just -a Perl regex. + [[https://lars.ingebrigtsen.no/2020/01/06/whatever-happened-to-news-gmane-org/][gmane has been dead for quite a while.]] -** New (repeatable) command line arg: --override='' +***** Improve support for navigating / editing source via emacs -This forces a file matching the regex (prefix) to be stowed even if the -file is already stowed to a different package, e.g., +******* Support source navigation in emacs via [[https://github.com/jacktasia/dumb-jump][dumb-jump]]. - --override='man' --override='info' +******* Configure cperl-mode to match existing coding style. -will unstow any pre-existing man and info pages that would conflict with -the file we are trying to stow. +*** Various maintainer tweaks -Equivalently, you could use --override='man|info' since the argument is -just a Perl regex. + Further improved the release process and its documentation in + various minor ways. -** The above gives the ability to manage packages with common content. +* Changes in version 2.3.1 -For example, man pages that are shared by a number of CPAN packages. -Using multiple stow directories and .stowrc files can also simplify -things. In our setup we use the standard /usr/local/stow directory for -packages to be installed in /usr/local. Since we install a large number -of extra Perl packages (currently about 300) we use an additional stow -directory: /usr/local/stow/perl-5.8.8-extras. Both stow directories -contain a '.stow' file so that they collaborate appropriately. I then use -the following .stowrc file in /usr/local/stow/perl-5.8.8-extras - - --dir=/usr/local/stow/perl-5.8.8-extras - --target=/usr/local - --override=bin - --override=man - --ignore='perllocal\.pod' - --ignore='\.packlist' - --ignore='\.bs' +*** Remove dependencies on Hash::Merge and Clone::Choose -When I stow packages from there, they automatically override any man pages -and binaries that may already have been stowed by another package or by -the core perl-5.8.8 installation. For example, if you want to upgrade the -Test-Simple package, you need to override all the man pages that would -have been installed by the core package. If you are upgrading CPAN, you -will also have to override the pre-existing cpan executable. + stow 2.3.0 added external runtime dependencies on Hash::Merge and + Clone::Choose. Historically stow hasn't had runtime dependencies + other than Perl itself, which is a useful property if you're + managing the installation of Perl using stow; the bootstrapping + instructions in stow's manual would need updating to describe how + to install these two modules (and any dependencies they have now + or in the future) as well. -** By default, search less aggressively for invalid symlinks when unstowing. + However, Hash::Merge is much more general than stow actually + needs, so replace the merge() call with a few lines of equivalent + code -- this avoids the external dependencies, and is clearer than + the merge() call. -That is, we only search for bad symlinks in the directories explicitly -mentioned in the installation image, and do not dig down into other -subdirs. Digging down into other directories can be very time consuming -if you have a really big tree (like with a couple of Oracle installations -lying around). In general the old behaviour is only necessary when you -have really stuffed up your installation by deleting a directory that has -already been stowed. Doing that on a live system is somewhat crazy and -hopefully rare. We provide an option '-p|--compat' to enable the old -behaviour for those needing to patch up mistakes. + Many thanks to Adam Sampson for this patch! -** Implement a test suite and support code. + https://lists.gnu.org/archive/html/bug-stow/2019-06/msg00001.html -This was built before implementing any of the extra features so I could -more easily check for equivalent functionality. The initial code base had -to be refactored substantially to allow for testing. The test suite is -not exhaustive, but it should provide enough to check for regressions. +*** Fix an issue with the test suite + t/cli.t was not testing with the right Perl executable, as + reported here: -* Changes in version 1.3.3: -** Now requires Perl 5.005 or later -** Initially empty directories are not removed anymore -** Removed buggy fastcwd (we use POSIX::getcwd instead) -** Fixed bug when the common Parent of Target dir and Stow dir was "/" -** Fixed bug when handling directories named "0" -** Stow now only warns the user if a directory is unreadable during unstowing. + https://rt.cpan.org/Ticket/Display.html?id=129944 -* Changes in version 1.3: -** Added --restow option. -** Fixed handling of slashes in package names. -** Expanded configure-time search for Perl binary. + Thanks to Slaven Rezic for spotting this and reporting it! -* Changes in version 1.2: -** Dependency on `pwd' removed. -** Perl 4 compatibility fixes. -** Manual expanded even more. +*** Various maintainer tweaks -* Changes in version 1.1: -** Long and short options now accepted. -** Manual expanded. -** `make clean' removes stow (which is generated from stow.in). + Improved the release process and its documentation in various + minor ways. -* Initial public release (v1.0) of Stow. +* Changes in version 2.3.0 + +*** New features / changes in behaviour + +***** New --dotfiles option + + Enable special handling for "dotfiles" (files or folders whose name + begins with a period) in the package directory. If this option is + enabled, Stow will add a preprocessing step for each file or folder + whose name begins with "dot-", and replace the "dot-" prefix in the + name by a period ("."). This is useful when Stow is used to manage + collections of dotfiles, to avoid having a package directory full + of hidden files. + + For example, suppose we have a package containing two files, + stow/dot-bashrc and stow/dot-emacs.d/init.el. With this option, + Stow will create symlinks from .bashrc to stow/dot-bashrc and from + .emacs.d/init.el to stow/dot-emacs.d/init.el. Any other files, + whose name does not begin with "dot-", will be processed as usual. + + Thanks to Joris Vankerschaver for this feature! + +***** Shell-like expansion in .stowrc files + + For options within .stowrc files which describe file paths, "~" can + be included to expand to the current value of $HOME, and + environment variables can be referenced e.g. via "$FOO" or + "${FOO}". To prevent expansion, escape with a backslash. + + Thanks a lot to Charles LeDoux for his diligent work on this + feature! + +***** chkstow now honours the $STOW_DIR environment variable + + The stow script already honoured the $STOW_DIR environment + variable. Now chkstow does too, for consistency. + +***** Stow now has a non-zero exit code if option parsing failed + + Thanks to Brice Waegeneire for reporting this. + +*** License upgraded from GPL version 2 to version 3 + + Copyright and license notices were also added to the headers of + various files in accordance with GNU guidelines. + +*** Documentation fixes and enhancements + +***** Remove dependency on unmaintained texi2html + + The dependency on the ancient and unmaintained texi2html for + building the single-page HTML version of the manual has been + removed, since it was difficult to get running on most distros + other than openSUSE. + + Instead use the more modern "makeinfo --html --no-split" approach. + Rules have been kept for posterity in the Makefile for the old + approach and also an "in-between" approach based on texi2any; + however these are not triggered by default. Run + + make manual-single-html-all + + to compare the three versions. + +***** Fixed naming of man page + + The title of the generated man page was previously ending up as + something like: + + IO::FILE=IO(0XA719C0)(1) + + Thanks to @Corin-EU on GitHub highlighting this and proposing a + fix. + +***** Convert README and INSTALL to Markdown + + They are now named README.md and INSTALL.md, and render nicely + when viewed via git hosting services which support Markdown. + +***** Update documentation to reflect more modern use cases + + The README.md, stow(8) man page, and info manual have been updated + to de-emphasise the package management use, since these days almost + everyone prefers to use modern package managers such as rpm / dpkg + / Nix for (system-wide) package management. + + To compensate, more popular modern use cases for Stow have been + added, such as management of dotfiles and software compiled in the + user's $HOME directory. + +***** Miscellaneous documentation fixes + + - Various typos were fixed. + + - The documentation for --verbose was updated to indicate that + verbosity levels now go up to 5. + + - Erroneous glob examples in the --ignore documentation were fixed. + + - The abbreviation "regex" was removed from the info manual for + consistency. + + - INSTALL.md now also documents how to build directly from git. + +*** Fixes for bugs, tests, and other technical debt + +***** Add Docker files for convenient testing across multiple Perl versions + + This is the first release which has been tested across 5 different + versions of Perl prior to release! The versions are: + + perl-5.22.2 + perl-5.20.3 + perl-5.18.4 + perl-5.16.3 + perl-5.14.4 + + Thanks to Charles LeDoux for this! + +***** Set up continuous testing via Travis CI + + This means that the test suite will be automatically run on any + pull requests submitted to GitHub, as well as "make distcheck" + and "./Build distcheck". + +***** Add Coveralls integration with GitHub + + This means that test coverage analysis will be automatically be run + on any pull requests submitted to GitHub. + +***** Miscellaneous improvements to the test suite + + These include proper testing of the distinct impact of ~/.stowrc + and .stowrc in the directory from which Stow is invoked. + +***** Fix for test suite on Cygwin + + Thanks to Lucas Theisen for this fix! + +***** aclocal.m4 was updated using aclocal 1.15.1. + +***** Miscellaneous fixes to the build and distribution process + +***** Improve handling of directories with unusual names + + Various fixes for corner cases where directories are named "0" + or begin with a space character, or where STOW_DIR is empty. + + Thanks to Cuong Manh Le for highlighting some of the issues and + proposing fixes! + +* Changes in version 2.2.2 + +*** @VERSION@ substitution was set up for the Stow::Util module. + +* Changes in version 2.2.1 + +Version 2.2.1 was not released since it was rejected by pause.perl.org +due to Stow::Util missing $VERSION. + +*** Small improvements to documentation + +***** The README has been revamped. + +***** Some index points have been added to the manual. + +***** Some typos were fixed. + +***** @VERSION@ substitution was fixed in the stow(8) man page. + +*** Fix Perl warnings + + Stow no longer emits "v-string in use/require non-portable" and + "Possible precedence issue with control flow operator" warnings + with newer Perl versions. See https://savannah.gnu.org/bugs/?36478 + and http://lists.gnu.org/archive/html/bug-stow/2014-06/msg00000.html + for full details. + +*** Fix "Undefined subroutine &main::error" error + + See https://rt.cpan.org/Public/Bug/Display.html?id=75349 for details. + +*** Failed system calls now include error description + + This should make errors easier to understand. + +*** Default ignore list now ignores top-level README.*, LICENSE.*, and COPYING + + These files are by definition specific to a given package, so if + they exist in the top-level directory, they should not be stowed. + +*** Correctly handle the stow/target directories as non-canonical paths + + Fix the case discovered by Hiroyuki Iwatsuki where stowing fails if + the stow / target directories are non-canonical paths. For + example, on FreeBSD /home is a symlink pointing to 'usr/home', so + running with the stow directory as /home/user/local/stow and the + target directory as /home/user/local previously resulted in the + stow directory path being calculated as + ../../../usr/home/user/local/stow relative to the target. + + See https://lists.gnu.org/archive/html/bug-stow/2013-04/msg00000.html for details. + +*** Fix stowing of relative links when --no-folding is used. + + With a tree like this: + + . + |-- stow + | `-- pkg + | `-- lib + | |-- itk-current -> itk4.0.0 + | `-- itk4.0.0 + | `-- libitk4.0.0.so + `-- target + `-- lib + |-- itk4.0.0 -> ../../stow/pkg/lib/itk4.0.0 + `-- libfoo-1.2.3.so + + stowing pkg with the --no-folding option resulted in itk-current + being "unpacked": + + . + `-- target + `-- lib + |-- itk-current + | `-- libitk4.0.0.so -> ../../../stow/pkg/lib/itk-current/libitk4.0.0.so + |-- itk4.0.0 + | `-- libitk4.0.0.so -> ../../../stow/pkg/lib/itk4.0.0/libitk4.0.0.so + `-- libfoo-1.2.3.so + + This commit fixes it so that it gets stowed as a symlink: + + . + `-- target + `-- lib + ... + |-- itk-current -> ../../stow/pkg/lib/itk-current + ... + + Thanks to Gabriele Balducci for reporting this problem: + + https://lists.gnu.org/archive/html/help-stow/2014-09/msg00000.html + +*** Internal code cleanups + +***** aclocal was updated. + +***** automake files were removed. + +***** Trailing whitespace was removed. + +***** Comments were added. + +***** Debug messages were improved. + +* Changes in version 2.2.0 + +*** New --no-folding option + + Disables folding of newly stowed directories when stowing, and + refolding of newly foldable directories when unstowing. + +*** Remove -a option (--adopt still available) + + As --adopt is the only option which allows stow to modify files, it + is considered potentially dangerous (especially for stow package + directories which are not managed by a version control system). + Therefore it seems prudent to require a bit more effort from the + user to enable this option, minimising the change of enabling it + via a typo. + +*** Improve error message when stow package is not found. + + The error message displayed a path to the missing stow package + which was relative to the target directory rather than the cwd, + which was confusing for the user. + +*** Test suite improvements + + The test suite has been tightened up slightly. + +*** Documentation improvements + + Various fixes and cosmetic improvements have been made in the manual. + +*** Remove "There are no outstanding operations to perform" warning. + +* Changes in version 2.1.3 + +*** New --adopt / -a option + + This allows plain files in the target to be "adopted" into the + package being stowed. See the manual has more details. + +*** ./configure now checks for Perl modules required by the test suite. + +* Changes in version 2.1.2 + + Many thanks to Stefano Lattarini for help with numerous autoconf and + automake issues which are addressed in this release. + +*** Significantly improve the handling of --with-pmdir. + +***** Calculation of the default value for --with-pmdir is now done safely in Perl. + + Previously non-POSIX-compliant shells could cause issues. + +***** The output of ./configure and make are now much more helpful. + +***** The Makefile will now check whether pmdir is in Perl's built-in @INC. + + If not, it will insert a + + use lib "..."; + + line into the generated stow script to ensure that it can always + locate the Perl modules without needing to manually set PERL5LIB. + +***** Updated INSTALL and HOWTO-RELEASE accordingly. + +*** ./configure now aborts if Perl isn't found. + +*** Ensured the ChangeLog is up-to-date when making a new distribution. + +*** Fixed bug with `make clean' removing files which the user may not be able to rebuild. + +* Changes in version 2.1.1 + +*** Fixed bug where ./configure --with-pmdir=X was ineffectual. + +*** Calculated the correct default value for pmdir based on the local Perl installation. + +*** Fixed some automake issues (thanks to Stefano Lattarini for spotting these!) + +*** Improved various bits of documentation. + +* Changes in version 2.1.0 + +*** Major refactoring of code into separate Stow and Stow::Util Perl modules. + +*** Added support for ignore list files. + +*** Added support for CPAN-style installation and distribution via Module::Build. + +*** Introduced `make test' target and significantly tightened up test suite. + +*** Very large number of code and documentation fixes (over 80 commits since version 2.0.1). + +*** The '--conflicts' option has been removed. + + Stow will always show conflicts if they are found during the scanning + phase. + +*** Improved debugging output. + +*** Converted man page to POD format. + +*** Include PDF, and both split- and single-page HTML versions of manual in the distribution. + +*** Fixed code style consistency issues. + +*** Running configure from outside the source tree now works. + +*** `make distcheck' now works. + +* Changes in version 2.0.1 + +*** Defer operations until all potential conflicts have been assessed. + + We do this by traversing the installation image(s) and recording the + actions that need to be performed. Redundant actions are factored out, + e.g., we don't want to create a link that we will later remove in order to + create a directory. Benefits of this approach: + + 1. Get to see _all_ the conflicts that are blocking an installation: + you don't have to deal with them one at a time. + 2. No operations are be performed if _any_ conflicts are detected: + a failed stow will not leave you with a partially installed + package. + 3. Minimises the set of operations that need to be performed. + 4. Operations are executed as a batch which is much faster + This can be an advantage when upgrading packages on a live system + where you want to minimise the amount of time when the package is + unavailable. + +*** The above fixes the false conflict problem mentioned in the info file. + +*** It also fixes the two bugs mentioned in the man page. + +*** Multiple stow directories will now cooperate in folding/unfolding. + +*** Conflict messages are more uniform and informative. + +*** Verbosity and tracing is more extensive and uniform. + +*** Implemented option parsing via Getopt::Long. + +*** Default command line arguments set via '.stowrc' and '~/.stowrc' files. + + Contents of these files are parsed as though they occurred first on + the command line. + +*** Support multiple actions per invocation. + + In order for this to work, we had to add a new (optional) command line arg + (-S) to specify packages to stow. For example, to update an installation + of emacs you can now do + + stow -D emacs-21.3 -S emacs-21.4a + + which will replace emacs-21.3 with emacs-21.4a. + You can mix and match any number of actions, e.g., + + stow -S p1 p2 -D p3 p4 -S p5 -R p6 + + will unstow p3, p4 and p6, then stow p1, p2, p5 and p6. + +*** New (repeatable) command line arg: --ignore='' + + This suppresses operating on a file matching the regex (suffix), + e.g. + + --ignore='~' --ignore='\.#.*' + + will ignore emacs and CVS backup files (suitable for ~/.stowrc file). + + (I opted for Perl regular expressions because they are more + powerful and easier to implement). + +*** New (repeatable) command line arg: --defer='' + + This defers stowing a file matching the regex (prefix) if that file + is already stowed to a different package, e.g., + + --defer='man' --defer='info' + + will cause stow to skip over pre-existing man and info pages. + + Equivalently, you could use --defer='man|info' since the argument + is just a Perl regex. + +*** New (repeatable) command line arg: --override='' + + This forces a file matching the regex (prefix) to be stowed even if + the file is already stowed to a different package, e.g. + + --override='man' --override='info' + + will unstow any pre-existing man and info pages that would conflict + with the file we are trying to stow. + + Equivalently, you could use --override='man|info' since the + argument is just a Perl regex. + +*** The above gives the ability to manage packages with common content. + + For example, man pages that are shared by a number of CPAN + packages. Using multiple stow directories and .stowrc files can + also simplify things. In our setup we use the standard + /usr/local/stow directory for packages to be installed in + /usr/local. Since we install a large number of extra Perl packages + (currently about 300) we use an additional stow directory: + /usr/local/stow/perl-5.8.8-extras. Both stow directories contain a + '.stow' file so that they collaborate appropriately. I then use + the following .stowrc file in /usr/local/stow/perl-5.8.8-extras + + --dir=/usr/local/stow/perl-5.8.8-extras + --target=/usr/local + --override=bin + --override=man + --ignore='perllocal\.pod' + --ignore='\.packlist' + --ignore='\.bs' + + When I stow packages from there, they automatically override any + man pages and binaries that may already have been stowed by another + package or by the core perl-5.8.8 installation. For example, if + you want to upgrade the Test-Simple package, you need to override + all the man pages that would have been installed by the core + package. If you are upgrading CPAN, you will also have to override + the pre-existing cpan executable. + +*** By default, search less aggressively for invalid symlinks when unstowing. + + That is, we only search for bad symlinks in the directories + explicitly mentioned in the installation image, and do not dig down + into other subdirs. Digging down into other directories can be + very time consuming if you have a really big tree (like with a + couple of Oracle installations lying around). In general the old + behaviour is only necessary when you have really stuffed up your + installation by deleting a directory that has already been stowed. + Doing that on a live system is somewhat crazy and hopefully rare. + We provide an option '-p|--compat' to enable the old behaviour for + those needing to patch up mistakes. + +*** New chkstow utility for checking the integrity of the target directory. + +*** Implement a test suite and support code. + + This was built before implementing any of the extra features so I + could more easily check for equivalent functionality. The initial + code base had to be refactored substantially to allow for testing. + The test suite is not exhaustive, but it should provide enough to + check for regressions. + +* Changes in version 1.3.3 + +*** Now requires Perl 5.005 or later + +*** Initially empty directories are not removed anymore + +*** Removed buggy fastcwd (we use POSIX::getcwd instead) + +*** Fixed bug when the common Parent of Target dir and Stow dir was "/" + +*** Fixed bug when handling directories named "0" + +*** Stow now only warns the user if a directory is unreadable during unstowing. + +* Changes in version 1.3: + +*** Added --restow option. + +*** Fixed handling of slashes in package names. + +*** Expanded configure-time search for Perl binary. + +* Changes in version 1.2: + +*** Dependency on `pwd' removed. + +*** Perl 4 compatibility fixes. + +*** Manual expanded even more. + +* Changes in version 1.1: + +*** Long and short options now accepted. + +*** Manual expanded. + +*** `make clean' removes stow (which is generated from stow.in). + +* Initial public release (v1.0) of Stow. + +* emacs local variables + Local Variables: + mode: org + org-export-with-toc: nil + org-export-with-author: nil + org-toc-odd-levels-only: t + org-blank-before-new-entry: ((heading . auto) (plain-list-item . auto)) + End: diff --git a/README b/README deleted file mode 100644 index 913f245..0000000 --- a/README +++ /dev/null @@ -1,31 +0,0 @@ -This is GNU Stow, a program for managing the installation of software -packages, keeping them separate (/usr/local/stow/emacs vs. -/usr/local/stow/perl, for example) while making them appear to be installed in -the same place (/usr/local). Stow doesn't store an extra state between runs, -so there's no danger of mangling directories when file hierarchies don't match -the database. Also, stow will never delete any files, directories, or links -that appear in a stow directory, so it is always possible to rebuild the -target tree. - -Stow is a Perl script which should run correctly under Perl 4 and Perl 5. You -must install Perl before running Stow. For more information about Perl, see -http://www.perl.com/perl/. - -You can get the latest information about Stow from -http://www.gnu.org/software/stow/stow.html - -Stow was inspired by Carnegie Mellon's "Depot" program, but is substantially -simpler. Whereas Depot requires database files to keep things in sync, Stow -stores no extra state between runs, so there's no danger (as there is in -Depot) of mangling directories when file hierarchies don't match the database. -Also unlike Depot, Stow will never delete any files, directories, or links -that appear in a Stow directory (e.g., /usr/local/stow/emacs), so it's always -possible to rebuild the target tree (e.g., /usr/local). - -Stow is free software, licensed under the GNU General Public License, which -can be found in the file COPYING. - -See INSTALL for installation instructions. - -Please mail comments, questions, and criticisms to the current maintainer, -Kahlil (Kal) Hodgson via help-stow@gnu.org or bug-stow@gnu.org. diff --git a/README.md b/README.md new file mode 100644 index 0000000..d91c9a4 --- /dev/null +++ b/README.md @@ -0,0 +1,139 @@ +[![Build Status](https://travis-ci.org/aspiers/stow.svg)](https://travis-ci.org/aspiers/stow) +[![Coverage Status](https://coveralls.io/repos/aspiers/stow/badge.svg?branch=master&service=github)](https://coveralls.io/github/aspiers/stow?branch=master) + +README for GNU Stow +=================== + +This README describes GNU Stow. This is not the definitive +documentation for Stow; for that, see the [info +manual](https://www.gnu.org/software/stow/manual/). + +Stow is a symlink farm manager program which takes distinct sets +of software and/or data located in separate directories on the +filesystem, and makes them all appear to be installed in a single +directory tree. + +Originally Stow was born to address the need to administer, upgrade, +install, and remove files in independent software packages without +confusing them with other files sharing the same file system space. +For instance, many years ago it used to be common to compile programs +such as Perl and Emacs from source and install them in `/usr/local`. +By using Stow, `/usr/local/bin` could contain symlinks to files within +`/usr/local/stow/emacs/bin`, `/usr/local/stow/perl/bin` etc., and +likewise recursively for any other subdirectories such as `.../share`, +`.../man`, and so on. + +While this is useful for keeping track of system-wide and per-user +installations of software built from source, in more recent times +software packages are often managed by more sophisticated package +management software such as +[`rpm`](https://en.wikipedia.org/wiki/Rpm_(software)), +[`dpkg`](https://en.wikipedia.org/wiki/Dpkg), and +[Nix](https://en.wikipedia.org/wiki/Nix_package_manager) / [GNU +Guix](https://en.wikipedia.org/wiki/GNU_Guix), or language-native +package managers such as Ruby's +[`gem`](https://en.wikipedia.org/wiki/RubyGems), Python's +[`pip`](https://en.wikipedia.org/wiki/Pip_(package_manager)), +Javascript's [`npm`](https://en.wikipedia.org/wiki/Npm_(software)), +and so on. + +However Stow is still used not only for software package management, +but also for other purposes, such as facilitating [a more controlled +approach to management of configuration files in the user's home +directory](http://brandon.invergo.net/news/2012-05-26-using-gnu-stow-to-manage-your-dotfiles.html), +especially when [coupled with version control +systems](http://lists.gnu.org/archive/html/info-stow/2011-12/msg00000.html). + +Stow was inspired by Carnegie Mellon's Depot program, but is +substantially simpler and safer. Whereas Depot required database files +to keep things in sync, Stow stores no extra state between runs, so +there's no danger (as there was in Depot) of mangling directories when +file hierarchies don't match the database. Also unlike Depot, Stow will +never delete any files, directories, or links that appear in a Stow +directory (e.g., `/usr/local/stow/emacs`), so it's always possible +to rebuild the target tree (e.g., `/usr/local`). + +Stow is implemented as a combination of a Perl script providing a CLI +interface, and a backend Perl module which does most of the work. + +You can get the latest information about Stow from the home page: + + http://www.gnu.org/software/stow/ + +Installation +------------ + +See [`INSTALL.md`](INSTALL.md) for installation instructions. + +Documentation +------------- + +Documentation for Stow is available +[online](https://www.gnu.org/software/stow/manual/), as is +[documentation for most GNU +software](https://www.gnu.org/software/manual/). Once you have Stow +installed, you may also find more information about Stow by running +`info stow` or `man stow`, or by looking at `/usr/share/doc/stow/`, +`/usr/local/doc/stow/`, or similar directories on your system. A +brief summary is available by running `stow --help`. + +Mailing lists +------------- + +Stow has the following mailing lists: + +- [help-stow](https://lists.gnu.org/mailman/listinfo/help-stow) is for + general user help and discussion. +- [stow-devel](https://lists.gnu.org/mailman/listinfo/stow-devel) is + used to discuss most aspects of Stow, including development and + enhancement requests. +- [bug-stow](https://lists.gnu.org/mailman/listinfo/bug-stow) is for + bug reports. + +Announcements about Stow are posted to +[info-stow](http://lists.gnu.org/mailman/listinfo/info-stow) and also, +as with most other GNU software, to +[info-gnu](http://lists.gnu.org/mailman/listinfo/info-gnu) +([archive](http://lists.gnu.org/archive/html/info-gnu/)). + +Security reports that should not be made immediately public can be +sent directly to the maintainer. If there is no response to an urgent +issue, you can escalate to the general +[security](http://lists.gnu.org/mailman/listinfo/security) mailing +list for advice. + +The Savannah project also has a [mailing +lists](https://savannah.gnu.org/mail/?group=stow) page. + +Getting involved +---------------- + +Please see the [`CONTRIBUTING.md` file](CONTRIBUTING.md). + +License +------- + +Stow is free software, licensed under the GNU General Public License, +which can be found in the file [`COPYING`](COPYING). + +Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without any warranty. + +Brief history and authorship +---------------------------- + +Stow was inspired by Carnegie Mellon's "Depot" program, but is +substantially simpler. Whereas Depot requires database files to keep +things in sync, Stow stores no extra state between runs, so there's no +danger (as there is in Depot) of mangling directories when file +hierarchies don't match the database. Also unlike Depot, Stow will +never delete any files, directories, or links that appear in a Stow +directory (e.g., `/usr/local/stow/emacs`), so it's always possible to +rebuild the target tree (e.g., `/usr/local`). + +For a high-level overview of the contributions of the main developers +over the years, see [the `AUTHORS` file](AUTHORS). + +For a more detailed history, please see the `ChangeLog` file. diff --git a/THANKS b/THANKS index e874eb1..8fbdd43 100644 --- a/THANKS +++ b/THANKS @@ -1,13 +1,13 @@ -Bob Glickstein: - Thanks to the following people for testing, using, commenting on, and otherwise aiding the creation of Stow: +Bob Glickstein (original author) Miles Bader Greg Fox David Hartmann Ben Liblit Gord Matzigkeit +Adam Lackorzynski Roland McGrath Jim Meyering Fritz Mueller @@ -16,7 +16,32 @@ Richard Stallman Spencer Sun Tom Tromey Steve Webster +Kahlil Hodgson Geoffrey Giesemann Emil Mikulic Austin Wood Christopher Hoobin +Adam Spiers +Troy Will +Stefano Lattarini +Adam Sampson +Cuong Manh Le +Lucas Theisen +Charles LeDoux +Joris Vankerschaver +@Corin-EU on GitHub +Kristoffer Haugsbakk +Hongyi Zhao +Jean Louis +Daniel Shahaf +Matan Nassau +Brice Waegeneire +Slaven Rezic + +Email addresses of new contributors are no longer being added by default +for privacy reasons; however please contact the maintainer if you are +happy for your email address to be listed here. + +More authorship and contribution details can be found in the AUTHORS +and ChangeLog files, and of course also in the git version control +history. diff --git a/TODO b/TODO index eaf9c82..c2da1f4 100644 --- a/TODO +++ b/TODO @@ -1,24 +1,42 @@ -* get account on fencepost.gnu.org (email accounts@gnu.org) - set up copyright papers? - 'assign.future' and 'request-assign.future.manual' +* Add support for pre/post-(un)install hooks -* Update stow.texi - - The email address in 'Reporting Bugs' needs to be updated + This would allow correct handling of the Info dir file via + install-info, amongst other things: -* Figure out what needs the optin 'nostow' 'notstowed'. Can they be removed? +*** http://unix.stackexchange.com/questions/73426/dealing-with-gnu-stow-conflicts +*** https://lists.gnu.org/archive/html/help-stow/2013-04/msg00016.html -* _texi2man_ needs author/copyright/license to be completed +* Get permission for next documentation release to be under FDL 1.3 -* Update http://directory.fsf.org/project/stow/ +* Import a debian/ tree from an older package and update it. -* Update savanaugh CVS +* Import a .spec file from somewhere and update it. -* Check that all email addresses are working: need an account on fenchpost for - this bug-stow@gnu.org, help-stow@gnu.org +* Distinguish between .stow and (undocumented) .nonstow / .notstowed -* Get some pre-testers: need to find appropriate mailing list? +** .stow is for marking stow directories - avoids altering them -* Announce release on info-gnu@gnu.org. + but also allows --override to work + +** .nonstow should be only for protecting non-stow directories against modification by stow + + but currently allows modification via --override + +** .notstowed is only honoured by chkstow + +** Documentation needs to be clear on this. + +* Prevent folding of directories which contain ignored files + +* Honour .no-stow-folding and --no-folding + +* Add semi-automatic conflict resolution + + (This idea is possibly obsoleted via --override and --adopt.) + +*** STOW_RESOLVE_CONFLICTS="non_stow_symlinks=t stow_symlinks=r" + +*** Add documentation about conflict resolution * Autodetect "foreign" stow directories @@ -45,5 +63,10 @@ From e-mail with meyering@na-net.ornl.gov: Does Version 2 fix this? (Kal) I think that because it never needs to create /usr/local/info, -it only needs to check th ownership of links that it _operatates_ on, +it only needs to check the ownership of links that it _operates_ on, not on all the elements of the path. + +* emacs local variables + Local Variables: + mode: org + End: diff --git a/aclocal.m4 b/aclocal.m4 index 2981344..53cbb40 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -1,7 +1,7 @@ -# generated automatically by aclocal 1.10 -*- Autoconf -*- +# generated automatically by aclocal 1.16.5 -*- Autoconf -*- + +# Copyright (C) 1996-2021 Free Software Foundation, Inc. -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -11,12 +11,16 @@ # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. -m4_if(m4_PACKAGE_VERSION, [2.61],, -[m4_fatal([this file was generated for autoconf 2.61. -You have another version of autoconf. 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AC_REQUIRE([AC_PROG_AWK])dnl AC_REQUIRE([AC_PROG_MAKE_SET])dnl AC_REQUIRE([AM_SET_LEADING_DOT])dnl _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])], - [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])], - [_AM_PROG_TAR([v7])])]) + [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])], + [_AM_PROG_TAR([v7])])]) _AM_IF_OPTION([no-dependencies],, [AC_PROVIDE_IFELSE([AC_PROG_CC], - [_AM_DEPENDENCIES(CC)], - [define([AC_PROG_CC], - defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl + [_AM_DEPENDENCIES([CC])], + [m4_define([AC_PROG_CC], + m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl AC_PROVIDE_IFELSE([AC_PROG_CXX], - [_AM_DEPENDENCIES(CXX)], - [define([AC_PROG_CXX], - defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl + [_AM_DEPENDENCIES([CXX])], + [m4_define([AC_PROG_CXX], + m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl AC_PROVIDE_IFELSE([AC_PROG_OBJC], - [_AM_DEPENDENCIES(OBJC)], - [define([AC_PROG_OBJC], - defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl + [_AM_DEPENDENCIES([OBJC])], + [m4_define([AC_PROG_OBJC], + m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl +AC_PROVIDE_IFELSE([AC_PROG_OBJCXX], + [_AM_DEPENDENCIES([OBJCXX])], + [m4_define([AC_PROG_OBJCXX], + m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl ]) +# Variables for tags utilities; see am/tags.am +if test -z "$CTAGS"; then + CTAGS=ctags +fi +AC_SUBST([CTAGS]) +if test -z "$ETAGS"; then + ETAGS=etags +fi +AC_SUBST([ETAGS]) +if test -z "$CSCOPE"; then + CSCOPE=cscope +fi +AC_SUBST([CSCOPE]) + +AC_REQUIRE([AM_SILENT_RULES])dnl +dnl The testsuite driver may need to know about EXEEXT, so add the +dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This +dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below. +AC_CONFIG_COMMANDS_PRE(dnl +[m4_provide_if([_AM_COMPILER_EXEEXT], + [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl + +# POSIX will say in a future version that running "rm -f" with no argument +# is OK; and we want to be able to make that assumption in our Makefile +# recipes. So use an aggressive probe to check that the usage we want is +# actually supported "in the wild" to an acceptable degree. +# See automake bug#10828. +# To make any issue more visible, cause the running configure to be aborted +# by default if the 'rm' program in use doesn't match our expectations; the +# user can still override this though. +if rm -f && rm -fr && rm -rf; then : OK; else + cat >&2 <<'END' +Oops! + +Your 'rm' program seems unable to run without file operands specified +on the command line, even when the '-f' option is present. This is contrary +to the behaviour of most rm programs out there, and not conforming with +the upcoming POSIX standard: + +Please tell bug-automake@gnu.org about your system, including the value +of your $PATH and any error possibly output before this message. This +can help us improve future automake versions. + +END + if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then + echo 'Configuration will proceed anyway, since you have set the' >&2 + echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2 + echo >&2 + else + cat >&2 <<'END' +Aborting the configuration process, to ensure you take notice of the issue. + +You can download and install GNU coreutils to get an 'rm' implementation +that behaves properly: . + +If you want to complete the configuration process using your problematic +'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM +to "yes", and re-run configure. + +END + AC_MSG_ERROR([Your 'rm' program is bad, sorry.]) + fi +fi +dnl The trailing newline in this macro's definition is deliberate, for +dnl backward compatibility and to allow trailing 'dnl'-style comments +dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841. ]) +dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not +dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further +dnl mangled by Autoconf and run in a shell conditional statement. +m4_define([_AC_COMPILER_EXEEXT], +m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])]) # When config.status generates a header, we must update the stamp-h file. # This file resides in the same directory as the config header @@ -217,18 +313,19 @@ AC_PROVIDE_IFELSE([AC_PROG_OBJC], # our stamp files there. AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK], [# Compute $1's index in $config_headers. +_am_arg=$1 _am_stamp_count=1 for _am_header in $config_headers :; do case $_am_header in - $1 | $1:* ) + $_am_arg | $_am_arg:* ) break ;; * ) _am_stamp_count=`expr $_am_stamp_count + 1` ;; esac done -echo "timestamp for $1" >`AS_DIRNAME([$1])`/stamp-h[]$_am_stamp_count]) +echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count]) -# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc. +# Copyright (C) 2001-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -239,17 +336,22 @@ echo "timestamp for $1" >`AS_DIRNAME([$1])`/stamp-h[]$_am_stamp_count]) # Define $install_sh. AC_DEFUN([AM_PROG_INSTALL_SH], [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl -install_sh=${install_sh-"\$(SHELL) $am_aux_dir/install-sh"} -AC_SUBST(install_sh)]) +if test x"${install_sh+set}" != xset; then + case $am_aux_dir in + *\ * | *\ *) + install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;; + *) + install_sh="\${SHELL} $am_aux_dir/install-sh" + esac +fi +AC_SUBST([install_sh])]) -# Copyright (C) 2003, 2005 Free Software Foundation, Inc. +# Copyright (C) 2003-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. -# serial 2 - # Check whether the underlying file-system supports filenames # with a leading dot. For instance MS-DOS doesn't. AC_DEFUN([AM_SET_LEADING_DOT], @@ -265,15 +367,12 @@ AC_SUBST([am__leading_dot])]) # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*- -# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005 -# Free Software Foundation, Inc. +# Copyright (C) 1997-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. -# serial 5 - # AM_MISSING_PROG(NAME, PROGRAM) # ------------------------------ AC_DEFUN([AM_MISSING_PROG], @@ -281,76 +380,49 @@ AC_DEFUN([AM_MISSING_PROG], $1=${$1-"${am_missing_run}$2"} AC_SUBST($1)]) - # AM_MISSING_HAS_RUN # ------------------ -# Define MISSING if not defined so far and test if it supports --run. -# If it does, set am_missing_run to use it, otherwise, to nothing. +# Define MISSING if not defined so far and test if it is modern enough. +# If it is, set am_missing_run to use it, otherwise, to nothing. AC_DEFUN([AM_MISSING_HAS_RUN], [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl AC_REQUIRE_AUX_FILE([missing])dnl -test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing" +if test x"${MISSING+set}" != xset; then + MISSING="\${SHELL} '$am_aux_dir/missing'" +fi # Use eval to expand $SHELL -if eval "$MISSING --run true"; then - am_missing_run="$MISSING --run " +if eval "$MISSING --is-lightweight"; then + am_missing_run="$MISSING " else am_missing_run= - AC_MSG_WARN([`missing' script is too old or missing]) + AC_MSG_WARN(['missing' script is too old or missing]) fi ]) -# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. -# -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# AM_PROG_MKDIR_P -# --------------- -# Check for `mkdir -p'. -AC_DEFUN([AM_PROG_MKDIR_P], -[AC_PREREQ([2.60])dnl -AC_REQUIRE([AC_PROG_MKDIR_P])dnl -dnl Automake 1.8 to 1.9.6 used to define mkdir_p. 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Presently that only means defining a flag for this option. AC_DEFUN([_AM_SET_OPTION], -[m4_define(_AM_MANGLE_OPTION([$1]), 1)]) +[m4_define(_AM_MANGLE_OPTION([$1]), [1])]) # _AM_SET_OPTIONS(OPTIONS) -# ---------------------------------- +# ------------------------ # OPTIONS is a space-separated list of Automake options. AC_DEFUN([_AM_SET_OPTIONS], -[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])]) +[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])]) # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET]) # ------------------------------------------- @@ -360,45 +432,60 @@ AC_DEFUN([_AM_IF_OPTION], # Check to make sure that the build environment is sane. -*- Autoconf -*- -# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005 -# Free Software Foundation, Inc. +# Copyright (C) 1996-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. -# serial 4 - # AM_SANITY_CHECK # --------------- AC_DEFUN([AM_SANITY_CHECK], [AC_MSG_CHECKING([whether build environment is sane]) -# Just in case -sleep 1 -echo timestamp > conftest.file -# Do `set' in a subshell so we don't clobber the current shell's +# Reject unsafe characters in $srcdir or the absolute working directory +# name. Accept space and tab only in the latter. +am_lf=' +' +case `pwd` in + *[[\\\"\#\$\&\'\`$am_lf]]*) + AC_MSG_ERROR([unsafe absolute working directory name]);; +esac +case $srcdir in + *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*) + AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);; +esac + +# Do 'set' in a subshell so we don't clobber the current shell's # arguments. Must try -L first in case configure is actually a # symlink; some systems play weird games with the mod time of symlinks # (eg FreeBSD returns the mod time of the symlink's containing # directory). if ( - set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null` - if test "$[*]" = "X"; then - # -L didn't work. - set X `ls -t $srcdir/configure conftest.file` - fi - rm -f conftest.file - if test "$[*]" != "X $srcdir/configure conftest.file" \ - && test "$[*]" != "X conftest.file $srcdir/configure"; then - - # If neither matched, then we have a broken ls. 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Make sure there is not a broken + alias in your environment]) + fi + if test "$[2]" = conftest.file || test $am_try -eq 2; then + break + fi + # Just in case. + sleep 1 + am_has_slept=yes + done test "$[2]" = conftest.file ) then @@ -408,9 +495,85 @@ else AC_MSG_ERROR([newly created file is older than distributed files! Check your system clock]) fi -AC_MSG_RESULT(yes)]) +AC_MSG_RESULT([yes]) +# If we didn't sleep, we still need to ensure time stamps of config.status and +# generated files are strictly newer. +am_sleep_pid= +if grep 'slept: no' conftest.file >/dev/null 2>&1; then + ( sleep 1 ) & + am_sleep_pid=$! +fi +AC_CONFIG_COMMANDS_PRE( + [AC_MSG_CHECKING([that generated files are newer than configure]) + if test -n "$am_sleep_pid"; then + # Hide warnings about reused PIDs. + wait $am_sleep_pid 2>/dev/null + fi + AC_MSG_RESULT([done])]) +rm -f conftest.file +]) -# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc. +# Copyright (C) 2009-2021 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# AM_SILENT_RULES([DEFAULT]) +# -------------------------- +# Enable less verbose build rules; with the default set to DEFAULT +# ("yes" being less verbose, "no" or empty being verbose). +AC_DEFUN([AM_SILENT_RULES], +[AC_ARG_ENABLE([silent-rules], [dnl +AS_HELP_STRING( + [--enable-silent-rules], + [less verbose build output (undo: "make V=1")]) +AS_HELP_STRING( + [--disable-silent-rules], + [verbose build output (undo: "make V=0")])dnl +]) +case $enable_silent_rules in @%:@ ((( + yes) AM_DEFAULT_VERBOSITY=0;; + no) AM_DEFAULT_VERBOSITY=1;; + *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);; +esac +dnl +dnl A few 'make' implementations (e.g., NonStop OS and NextStep) +dnl do not support nested variable expansions. +dnl See automake bug#9928 and bug#10237. +am_make=${MAKE-make} +AC_CACHE_CHECK([whether $am_make supports nested variables], + [am_cv_make_support_nested_variables], + [if AS_ECHO([['TRUE=$(BAR$(V)) +BAR0=false +BAR1=true +V=1 +am__doit: + @$(TRUE) +.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then + am_cv_make_support_nested_variables=yes +else + am_cv_make_support_nested_variables=no +fi]) +if test $am_cv_make_support_nested_variables = yes; then + dnl Using '$V' instead of '$(V)' breaks IRIX make. + AM_V='$(V)' + AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)' +else + AM_V=$AM_DEFAULT_VERBOSITY + AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY +fi +AC_SUBST([AM_V])dnl +AM_SUBST_NOTMAKE([AM_V])dnl +AC_SUBST([AM_DEFAULT_V])dnl +AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl +AC_SUBST([AM_DEFAULT_VERBOSITY])dnl +AM_BACKSLASH='\' +AC_SUBST([AM_BACKSLASH])dnl +_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl +]) + +# Copyright (C) 2001-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -418,27 +581,27 @@ AC_MSG_RESULT(yes)]) # AM_PROG_INSTALL_STRIP # --------------------- -# One issue with vendor `install' (even GNU) is that you can't +# One issue with vendor 'install' (even GNU) is that you can't # specify the program used to strip binaries. This is especially # annoying in cross-compiling environments, where the build's strip # is unlikely to handle the host's binaries. # Fortunately install-sh will honor a STRIPPROG variable, so we -# always use install-sh in `make install-strip', and initialize +# always use install-sh in "make install-strip", and initialize # STRIPPROG with the value of the STRIP variable (set by the user). AC_DEFUN([AM_PROG_INSTALL_STRIP], [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl -# Installed binaries are usually stripped using `strip' when the user -# run `make install-strip'. However `strip' might not be the right +# Installed binaries are usually stripped using 'strip' when the user +# run "make install-strip". However 'strip' might not be the right # tool to use in cross-compilation environments, therefore Automake -# will honor the `STRIP' environment variable to overrule this program. -dnl Don't test for $cross_compiling = yes, because it might be `maybe'. +# will honor the 'STRIP' environment variable to overrule this program. +dnl Don't test for $cross_compiling = yes, because it might be 'maybe'. if test "$cross_compiling" != no; then AC_CHECK_TOOL([STRIP], [strip], :) fi INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s" AC_SUBST([INSTALL_STRIP_PROGRAM])]) -# Copyright (C) 2006 Free Software Foundation, Inc. +# Copyright (C) 2006-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -446,24 +609,27 @@ AC_SUBST([INSTALL_STRIP_PROGRAM])]) # _AM_SUBST_NOTMAKE(VARIABLE) # --------------------------- -# Prevent Automake from outputing VARIABLE = @VARIABLE@ in Makefile.in. +# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in. # This macro is traced by Automake. AC_DEFUN([_AM_SUBST_NOTMAKE]) +# AM_SUBST_NOTMAKE(VARIABLE) +# -------------------------- +# Public sister of _AM_SUBST_NOTMAKE. +AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)]) + # Check how to create a tarball. -*- Autoconf -*- -# Copyright (C) 2004, 2005 Free Software Foundation, Inc. +# Copyright (C) 2004-2021 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. -# serial 2 - # _AM_PROG_TAR(FORMAT) # -------------------- # Check how to create a tarball in format FORMAT. -# FORMAT should be one of `v7', `ustar', or `pax'. +# FORMAT should be one of 'v7', 'ustar', or 'pax'. # # Substitute a variable $(am__tar) that is a command # writing to stdout a FORMAT-tarball containing the directory @@ -473,75 +639,114 @@ AC_DEFUN([_AM_SUBST_NOTMAKE]) # Substitute a variable $(am__untar) that extract such # a tarball read from stdin. # $(am__untar) < result.tar +# AC_DEFUN([_AM_PROG_TAR], -[# Always define AMTAR for backward compatibility. -AM_MISSING_PROG([AMTAR], [tar]) -m4_if([$1], [v7], - [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'], - [m4_case([$1], [ustar],, [pax],, - [m4_fatal([Unknown tar format])]) -AC_MSG_CHECKING([how to create a $1 tar archive]) -# Loop over all known methods to create a tar archive until one works. +[# Always define AMTAR for backward compatibility. Yes, it's still used +# in the wild :-( We should find a proper way to deprecate it ... +AC_SUBST([AMTAR], ['$${TAR-tar}']) + +# We'll loop over all known methods to create a tar archive until one works. _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' -_am_tools=${am_cv_prog_tar_$1-$_am_tools} -# Do not fold the above two line into one, because Tru64 sh and -# Solaris sh will not grok spaces in the rhs of `-'. -for _am_tool in $_am_tools -do - case $_am_tool in - gnutar) - for _am_tar in tar gnutar gtar; - do - AM_RUN_LOG([$_am_tar --version]) && break - done - am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' - am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' - am__untar="$_am_tar -xf -" - ;; - plaintar) - # Must skip GNU tar: if it does not support --format= it doesn't create - # ustar tarball either. - (tar --version) >/dev/null 2>&1 && continue - am__tar='tar chf - "$$tardir"' - am__tar_='tar chf - "$tardir"' - am__untar='tar xf -' - ;; - pax) - am__tar='pax -L -x $1 -w "$$tardir"' - am__tar_='pax -L -x $1 -w "$tardir"' - am__untar='pax -r' - ;; - cpio) - am__tar='find "$$tardir" -print | cpio -o -H $1 -L' - am__tar_='find "$tardir" -print | cpio -o -H $1 -L' - am__untar='cpio -i -H $1 -d' - ;; - none) - am__tar=false - am__tar_=false - am__untar=false - ;; - esac - # If the value was cached, stop now. We just wanted to have am__tar - # and am__untar set. - test -n "${am_cv_prog_tar_$1}" && break +m4_if([$1], [v7], + [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'], - # tar/untar a dummy directory, and stop if the command works + [m4_case([$1], + [ustar], + [# The POSIX 1988 'ustar' format is defined with fixed-size fields. + # There is notably a 21 bits limit for the UID and the GID. In fact, + # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343 + # and bug#13588). + am_max_uid=2097151 # 2^21 - 1 + am_max_gid=$am_max_uid + # The $UID and $GID variables are not portable, so we need to resort + # to the POSIX-mandated id(1) utility. Errors in the 'id' calls + # below are definitely unexpected, so allow the users to see them + # (that is, avoid stderr redirection). + am_uid=`id -u || echo unknown` + am_gid=`id -g || echo unknown` + AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) + if test $am_uid -le $am_max_uid; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + _am_tools=none + fi + AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) + if test $am_gid -le $am_max_gid; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + _am_tools=none + fi], + + [pax], + [], + + [m4_fatal([Unknown tar format])]) + + AC_MSG_CHECKING([how to create a $1 tar archive]) + + # Go ahead even if we have the value already cached. We do so because we + # need to set the values for the 'am__tar' and 'am__untar' variables. + _am_tools=${am_cv_prog_tar_$1-$_am_tools} + + for _am_tool in $_am_tools; do + case $_am_tool in + gnutar) + for _am_tar in tar gnutar gtar; do + AM_RUN_LOG([$_am_tar --version]) && break + done + am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' + am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' + am__untar="$_am_tar -xf -" + ;; + plaintar) + # Must skip GNU tar: if it does not support --format= it doesn't create + # ustar tarball either. + (tar --version) >/dev/null 2>&1 && continue + am__tar='tar chf - "$$tardir"' + am__tar_='tar chf - "$tardir"' + am__untar='tar xf -' + ;; + pax) + am__tar='pax -L -x $1 -w "$$tardir"' + am__tar_='pax -L -x $1 -w "$tardir"' + am__untar='pax -r' + ;; + cpio) + am__tar='find "$$tardir" -print | cpio -o -H $1 -L' + am__tar_='find "$tardir" -print | cpio -o -H $1 -L' + am__untar='cpio -i -H $1 -d' + ;; + none) + am__tar=false + am__tar_=false + am__untar=false + ;; + esac + + # If the value was cached, stop now. We just wanted to have am__tar + # and am__untar set. + test -n "${am_cv_prog_tar_$1}" && break + + # tar/untar a dummy directory, and stop if the command works. + rm -rf conftest.dir + mkdir conftest.dir + echo GrepMe > conftest.dir/file + AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) + rm -rf conftest.dir + if test -s conftest.tar; then + AM_RUN_LOG([$am__untar /dev/null 2>&1 && break + fi + done rm -rf conftest.dir - mkdir conftest.dir - echo GrepMe > conftest.dir/file - AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) - rm -rf conftest.dir - if test -s conftest.tar; then - AM_RUN_LOG([$am__untar /dev/null 2>&1 && break - fi -done -rm -rf conftest.dir -AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) -AC_MSG_RESULT([$am_cv_prog_tar_$1])]) + AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) + AC_MSG_RESULT([$am_cv_prog_tar_$1])]) + AC_SUBST([am__tar]) AC_SUBST([am__untar]) ]) # _AM_PROG_TAR diff --git a/automake/.gitignore b/automake/.gitignore new file mode 100644 index 0000000..cfd5146 --- /dev/null +++ b/automake/.gitignore @@ -0,0 +1,5 @@ +install-sh +missing +mdate-sh +test-driver +texinfo.tex diff --git a/chkstow.in b/bin/chkstow.in old mode 100644 new mode 100755 similarity index 53% rename from chkstow.in rename to bin/chkstow.in index 6e54b91..e23774d --- a/chkstow.in +++ b/bin/chkstow.in @@ -1,15 +1,34 @@ #!@PERL@ +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. use strict; use warnings; +require 5.006_001; + use File::Find; use Getopt::Long; -our $Wanted = \&bad_links; -our %Package=(); +my $DEFAULT_TARGET = $ENV{STOW_DIR} || '/usr/local/'; + +our $Wanted = \&bad_links; +our %Package = (); our $Stow_dir = ''; -our $Target = q{/usr/local/}; +our $Target = $DEFAULT_TARGET; # put the main loop into a block so that tests can load this as a module if ( not caller() ) { @@ -35,12 +54,14 @@ sub usage { print <<"EOT"; USAGE: chkstow [options] -Options: - -b, --badlinks Report symlinks that point to non-existant files. - -a, --aliens Report non-symlinks in the target directory. - -l, --list List packages in the target directory. - -t DIR, --target=DIR Set the target directory to DIR (default - is /usr/local) +Options: + -t DIR, --target=DIR Set the target directory to DIR + (default is $DEFAULT_TARGET) + -b, --badlinks Report symlinks that point to non-existent files + -a, --aliens Report non-symlinks in the target directory + -l, --list List packages in the target directory + +--badlinks is the default mode. EOT exit(0); } @@ -49,7 +70,7 @@ sub check_stow { #my ($Target, $Wanted) = @_; my (%options) = ( - wanted => $Wanted, + wanted => $Wanted, preprocess => \&skip_dirs, ); @@ -60,8 +81,7 @@ sub check_stow { delete $Package{'..'}; if (keys %Package) { - local $,="\n"; - print sort(keys %Package), "\n"; + print map "$_\n", sort(keys %Package); } } return; @@ -80,15 +100,15 @@ sub skip_dirs { # checking for files that do not link to anything sub bad_links { - -l && !-e && print "Bogus link: $File::Find::name\n"; + -l && !-e && print "Bogus link: $File::Find::name\n"; } # checking for files that are not owned by stow -sub aliens { - !-l && !-d && print "Unstowed file: $File::Find::name\n"; +sub aliens { + !-l && !-d && print "Unstowed file: $File::Find::name\n"; } -# just list the packages in the the target directory +# just list the packages in the target directory # FIXME: what if the stow dir is not called 'stow'? sub list { if (-l) { @@ -101,4 +121,7 @@ sub list { 1; # Hey, it's a module! -# vim:ft=perl +# Local variables: +# mode: perl +# End: +# vim: ft=perl diff --git a/bin/stow.in b/bin/stow.in new file mode 100755 index 0000000..024b152 --- /dev/null +++ b/bin/stow.in @@ -0,0 +1,852 @@ +#!@PERL@ + +# GNU Stow - manage farms of symbolic links +# Copyright (C) 1993, 1994, 1995, 1996 by Bob Glickstein +# Copyright (C) 2000, 2001 Guillaume Morin +# Copyright (C) 2007 Kahlil Hodgson +# Copyright (C) 2011 Adam Spiers +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +=head1 NAME + +stow - manage farms of symbolic links + +=head1 SYNOPSIS + +stow [ options ] package ... + +=head1 DESCRIPTION + +This manual page describes GNU Stow @VERSION@. This is not the +definitive documentation for Stow; for that, see the accompanying info +manual, e.g. by typing C. + +Stow is a symlink farm manager which takes distinct sets of software +and/or data located in separate directories on the filesystem, and +makes them all appear to be installed in a single directory tree. + +Originally Stow was born to address the need to administer, upgrade, +install, and remove files in independent software packages without +confusing them with other files sharing the same file system space. +For instance, many years ago it used to be common to compile programs +such as Perl and Emacs from source. By using Stow, F +could contain symlinks to files within F, +F etc., and likewise recursively for any +other subdirectories such as F<.../share>, F<.../man>, and so on. + +While this is useful for keeping track of system-wide and per-user +installations of software built from source, in more recent times +software packages are often managed by more sophisticated package +management software such as rpm, dpkg, and Nix / GNU Guix, or +language-native package managers such as Ruby's gem, Python's pip, +Javascript's npm, and so on. + +However Stow is still used not only for software package management, +but also for other purposes, such as facilitating a more controlled +approach to management of configuration files in the user's home +directory, especially when coupled with version control systems. + +Stow was inspired by Carnegie Mellon's Depot program, but is +substantially simpler and safer. Whereas Depot required database files +to keep things in sync, Stow stores no extra state between runs, so +there's no danger (as there was in Depot) of mangling directories when +file hierarchies don't match the database. Also unlike Depot, Stow +will never delete any files, directories, or links that appear in a +Stow directory (e.g., F), so it's always +possible to rebuild the target tree (e.g., F). + +Stow is implemented as a combination of a Perl script providing a CLI +interface, and a backend Perl module which does most of the work. + +=head1 TERMINOLOGY + +A "package" is a related collection of files and directories that +you wish to administer as a unit -- e.g., Perl or Emacs -- and that +needs to be installed in a particular directory structure -- e.g., +with F, F, and F subdirectories. + +A "target directory" is the root of a tree in which one or more +packages wish to B to be installed. A common, but by no means +the only such location is F. The examples in this manual +page will use F as the target directory. + +A "stow directory" is the root of a tree containing separate +packages in private subtrees. When Stow runs, it uses the current +directory as the default stow directory. The examples in this manual +page will use F as the stow directory, so that +individual packages will be, for example, F and +F. + +An "installation image" is the layout of files and directories +required by a package, relative to the target directory. Thus, the +installation image for Perl includes: a F directory containing +F and F (among others); an F directory containing +Texinfo documentation; a F directory containing Perl +libraries; and a F directory containing man pages. + +A "package directory" is the root of a tree containing the +installation image for a particular package. Each package directory +must reside in a stow directory -- e.g., the package directory +F must reside in the stow directory +F. The "name" of a package is the name of its +directory within the stow directory -- e.g., F. + +Thus, the Perl executable might reside in +F, where F is the target +directory, F is the stow directory, +F is the package directory, and F +within is part of the installation image. + +A "symlink" is a symbolic link. A symlink can be "relative" or +"absolute". An absolute symlink names a full path; that is, one +starting from F. A relative symlink names a relative path; that +is, one not starting from F. The target of a relative symlink is +computed starting from the symlink's own directory. Stow only creates +relative symlinks. + +=head1 OPTIONS + +The stow directory is assumed to be the value of the C +environment variable or if unset the current directory, and the target +directory is assumed to be the parent of the current directory (so it +is typical to execute F from the directory F). +Each F given on the command line is the name of a package in +the stow directory (e.g., F). By default, they are installed +into the target directory (but they can be deleted instead using +C<-D>). + +=over 4 + +=item -n + +=item --no + +=item --simulate + +Do not perform any operations that modify the filesystem; merely show +what would happen. + +=item -d DIR + +=item --dir=DIR + +Set the stow directory to C instead of the current directory. +This also has the effect of making the default target directory be the +parent of C. + +=item -t DIR + +=item --target=DIR + +Set the target directory to C instead of the parent of the stow +directory. + +=item -v + +=item --verbose[=N] + +Send verbose output to standard error describing what Stow is +doing. Verbosity levels are from 0 to 5; 0 is the default. +Using C<-v> or C<--verbose> increases the verbosity by one; using +`--verbose=N' sets it to N. + +=item -S + +=item --stow + +Stow the packages that follow this option into the target directory. +This is the default action and so can be omitted if you are only +stowing packages rather than performing a mixture of +stow/delete/restow actions. + +=item -D + +=item --delete + +Unstow the packages that follow this option from the target directory rather +than installing them. + +=item -R + +=item --restow + +Restow packages (first unstow, then stow again). This is useful +for pruning obsolete symlinks from the target tree after updating +the software in a package. + +=item --adopt + +B This behaviour is specifically intended to alter the +contents of your stow directory. If you do not want that, this option +is not for you. + +When stowing, if a target is encountered which already exists but is a +plain file (and hence not owned by any existing stow package), then +normally Stow will register this as a conflict and refuse to proceed. +This option changes that behaviour so that the file is moved to the +same relative place within the package's installation image within the +stow directory, and then stowing proceeds as before. So effectively, +the file becomes adopted by the stow package, without its contents +changing. + +=item --no-folding + +Disable folding of newly stowed directories when stowing, and +refolding of newly foldable directories when unstowing. + +=item --ignore=REGEX + +Ignore files ending in this Perl regex. + +=item --defer=REGEX + +Don't stow files beginning with this Perl regex if the file is already +stowed to another package. + +=item --override=REGEX + +Force stowing files beginning with this Perl regex if the file is +already stowed to another package. + +=item --dotfiles + +Enable special handling for "dotfiles" (files or folders whose name +begins with a period) in the package directory. If this option is +enabled, Stow will add a preprocessing step for each file or folder +whose name begins with "dot-", and replace the "dot-" prefix in the +name by a period (.). This is useful when Stow is used to manage +collections of dotfiles, to avoid having a package directory full of +hidden files. + +For example, suppose we have a package containing two files, +F and F. With this option, +Stow will create symlinks from F<.bashrc> to F and +from F<.emacs.d/init.el> to F. Any other +files, whose name does not begin with "dot-", will be processed as usual. + +=item -V + +=item --version + +Show Stow version number, and exit. + +=item -h + +=item --help + +Show Stow command syntax, and exit. + +=back + +=head1 INSTALLING PACKAGES + +The default action of Stow is to install a package. This means +creating symlinks in the target tree that point into the package tree. +Stow attempts to do this with as few symlinks as possible; in other +words, if Stow can create a single symlink that points to an entire +subtree within the package tree, it will choose to do that rather than +create a directory in the target tree and populate it with symlinks. + +For example, suppose that no packages have yet been installed in +F; it's completely empty (except for the F +subdirectory, of course). Now suppose the Perl package is installed. +Recall that it includes the following directories in its installation +image: F; F; F; F. Rather than +creating the directory F and populating it with +symlinks to F<../stow/perl/bin/perl> and F<../stow/perl/bin/a2p> (and +so on), Stow will create a single symlink, F, which +points to F. In this way, it still works to refer to +F and F, and fewer symlinks +have been created. This is called "tree folding", since an entire +subtree is "folded" into a single symlink. + +To complete this example, Stow will also create the symlink +F pointing to F; the symlink +F pointing to F; and the symlink +F pointing to F. + +Now suppose that instead of installing the Perl package into an empty +target tree, the target tree is not empty to begin with. Instead, it +contains several files and directories installed under a different +system-administration philosophy. In particular, F +already exists and is a directory, as are F and +F. In this case, Stow will descend into +F and create symlinks to F<../stow/perl/bin/perl> and +F<../stow/perl/bin/a2p> (etc.), and it will descend into +F and create the tree-folding symlink F pointing +to F<../stow/perl/lib/perl>, and so on. As a rule, Stow only descends +as far as necessary into the target tree when it can create a +tree-folding symlink. + +The time often comes when a tree-folding symlink has to be undone +because another package uses one or more of the folded subdirectories +in its installation image. This operation is called "splitting open" +a folded tree. It involves removing the original symlink from the +target tree, creating a true directory in its place, and then +populating the new directory with symlinks to the newly-installed +package B to the old package that used the old symlink. For +example, suppose that after installing Perl into an empty +F, we wish to install Emacs. Emacs's installation image +includes a F directory containing the F and F +executables, among others. Stow must make these files appear to be +installed in F, but presently F is a +symlink to F. Stow therefore takes the following +steps: the symlink F is deleted; the directory +F is created; links are made from F to +F<../stow/emacs/bin/emacs> and F<../stow/emacs/bin/etags>; and links +are made from F to F<../stow/perl/bin/perl> and +F<../stow/perl/bin/a2p>. + +When splitting open a folded tree, Stow makes sure that the symlink +it is about to remove points inside a valid package in the current stow +directory. + +=head2 Stow will never delete anything that it doesn't own. + +Stow "owns" everything living in the target tree that points into a +package in the stow directory. Anything Stow owns, it can recompute if +lost. Note that by this definition, Stow doesn't "own" anything +B the stow directory or in any of the packages. + +If Stow needs to create a directory or a symlink in the target tree +and it cannot because that name is already in use and is not owned by +Stow, then a conflict has arisen. See the "Conflicts" section in the +info manual. + +=head1 DELETING PACKAGES + +When the C<-D> option is given, the action of Stow is to delete a +package from the target tree. Note that Stow will not delete anything +it doesn't "own". Deleting a package does B mean removing it from +the stow directory or discarding the package tree. + +To delete a package, Stow recursively scans the target tree, skipping +over the stow directory (since that is usually a subdirectory of the +target tree) and any other stow directories it encounters (see +"Multiple stow directories" in the info manual). Any symlink it +finds that points into the package being deleted is removed. Any +directory that contained only symlinks to the package being deleted is +removed. Any directory that, after removing symlinks and empty +subdirectories, contains only symlinks to a single other package, is +considered to be a previously "folded" tree that was "split open." +Stow will re-fold the tree by removing the symlinks to the surviving +package, removing the directory, then linking the directory back to +the surviving package. + +=head1 RESOURCE FILES + +F searches for default command line options at F<.stowrc> (current +directory) and F<~/.stowrc> (home directory) in that order. If both +locations are present, the files are effectively appended together. + +The effect of options in the resource file is similar to simply prepending +the options to the command line. For options that provide a single value, +such as F<--target> or F<--dir>, the command line option will overwrite any +options in the resource file. For options that can be given more than once, +F<--ignore> for example, command line options and resource options are +appended together. + +Environment variables and the tilde character (F<~>) will be expanded for +options that take a file path. + +The options F<-D>, F<-R>, F<-S>, and any packages listed in the resource +file are ignored. + +See the info manual for more information on how stow handles resource +file. + +=head1 SEE ALSO + +The full documentation for F is maintained as a Texinfo manual. +If the F and F programs are properly installed at your site, the command + + info stow + +should give you access to the complete manual. + +=head1 BUGS + +Please report bugs in Stow using the Debian bug tracking system. + +Currently known bugs include: + +=over 4 + +=item * The empty-directory problem. + +If package F includes an empty directory -- say, F -- +then if no other package has a F subdirectory, everything's fine. +If another stowed package F, has a F subdirectory, then +when stowing, F will be "split open" and the contents +of F will be individually stowed. So far, so good. But when +unstowing F, F will be removed, even though +F needs it to remain. A workaround for this problem is to +create a file in F as a placeholder. If you name that file +F<.placeholder>, it will be easy to find and remove such files when +this bug is fixed. + +=item * + +When using multiple stow directories (see "Multiple stow directories" +in the info manual), Stow fails to "split open" tree-folding symlinks +(see "Installing packages" in the info manual) that point into a stow +directory which is not the one in use by the current Stow +command. Before failing, it should search the target of the link to +see whether any element of the path contains a F<.stow> file. If it +finds one, it can "learn" about the cooperating stow directory to +short-circuit the F<.stow> search the next time it encounters a +tree-folding symlink. + +=back + +=head1 AUTHOR + +This man page was originally constructed by Charles Briscoe-Smith from +parts of Stow's info manual, and then converted to POD format by Adam +Spiers. The info manual contains the following notice, which, as it +says, applies to this manual page, too. The text of the section +entitled "GNU General Public License" can be found in the file +F on any Debian GNU/Linux system. If +you don't have access to a Debian system, or the GPL is not there, +write to the Free Software Foundation, Inc., 59 Temple Place, Suite +330, Boston, MA, 02111-1307, USA. + +=head1 COPYRIGHT + +Copyright (C) +1993, 1994, 1995, 1996 by Bob Glickstein ; +2000, 2001 by Guillaume Morin; +2007 by Kahlil Hodgson; +2011 by Adam Spiers; +and others. + +Permission is granted to make and distribute verbatim copies of this +manual provided the copyright notice and this permission notice are +preserved on all copies. + +Permission is granted to copy and distribute modified versions of this +manual under the conditions for verbatim copying, provided also that +the section entitled "GNU General Public License" is included with the +modified manual, and provided that the entire resulting derived work +is distributed under the terms of a permission notice identical to +this one. + +Permission is granted to copy and distribute translations of this +manual into another language, under the above conditions for modified +versions, except that this permission notice may be stated in a +translation approved by the Free Software Foundation. + +=cut + +use strict; +use warnings; + +require 5.006_001; + +use POSIX qw(getcwd); +use Getopt::Long qw(GetOptionsFromArray); +use Scalar::Util qw(reftype); + +@USE_LIB_PMDIR@ +use Stow; +use Stow::Util qw(parent error); + +my $ProgramName = $0; +$ProgramName =~ s{.*/}{}; + +main() unless caller(); + +sub main { + my ($options, $pkgs_to_unstow, $pkgs_to_stow) = process_options(); + + my $stow = new Stow(%$options); + + $stow->plan_unstow(@$pkgs_to_unstow); + $stow->plan_stow (@$pkgs_to_stow); + + my %conflicts = $stow->get_conflicts; + + if (%conflicts) { + foreach my $action ('unstow', 'stow') { + next unless $conflicts{$action}; + foreach my $package (sort keys %{ $conflicts{$action} }) { + warn "WARNING! ${action}ing $package would cause conflicts:\n"; + #if $stow->get_action_count > 1; + foreach my $message (sort @{ $conflicts{$action}{$package} }) { + warn " * $message\n"; + } + } + } + warn "All operations aborted.\n"; + exit 1; + } + else { + if ($options->{simulate}) { + warn "WARNING: in simulation mode so not modifying filesystem.\n"; + return; + } + + $stow->process_tasks(); + } +} + + +#===== SUBROUTINE =========================================================== +# Name : process_options() +# Purpose : Parse and process command line and .stowrc file options +# Parameters: none +# Returns : (\%options, \@pkgs_to_unstow, \@pkgs_to_stow) +# Throws : a fatal error if a bad option is given +# Comments : checks @ARGV for valid package names +#============================================================================ +sub process_options { + # Get cli options. + my ($cli_options, + $pkgs_to_unstow, + $pkgs_to_stow) = parse_options(@ARGV); + + # Get the .stowrc options. + # Note that rc_pkgs_to_unstow and rc_pkgs_to_stow are ignored. + my ($rc_options, + $rc_pkgs_to_unstow, + $rc_pkgs_to_stow) = get_config_file_options(); + + # Merge .stowrc and command line options. + # Preference is given to cli options. + my %options = %$rc_options; + foreach my $option (keys %$cli_options) { + my $rc_value = $rc_options->{$option}; + my $cli_value = $cli_options->{$option}; + my $type = reftype($cli_value); + + if (defined $type && $type eq 'ARRAY' && defined $rc_value) { + # rc options come first in merged arrays. + $options{$option} = [@{$rc_value}, @{$cli_value}]; + } else { + # cli options overwrite conflicting rc options. + $options{$option} = $cli_value; + } + } + + # Run checks on the merged options. + sanitize_path_options(\%options); + check_packages($pkgs_to_unstow, $pkgs_to_stow); + + # Return merged and processed options. + return (\%options, $pkgs_to_unstow, $pkgs_to_stow); +} + +#===== SUBROUTINE =========================================================== +# Name : parse_options() +# Purpose : parse command line options +# Parameters: @arg_array => array of options to parse +# Example: parse_options(@ARGV) +# Returns : (\%options, \@pkgs_to_unstow, \@pkgs_to_stow) +# Throws : a fatal error if a bad command line option is given +# Comments : Used for parsing both command line options and rc file. Used +# for parsing only. Sanity checks and post-processing belong in +# process_options(). +#============================================================================ +sub parse_options { + my %options = (); + my @pkgs_to_unstow = (); + my @pkgs_to_stow = (); + my $action = 'stow'; + + #$,="\n"; print @_,"\n"; # for debugging rc file + + Getopt::Long::config('no_ignore_case', 'bundling', 'permute'); + GetOptionsFromArray( + \@_, + \%options, + 'verbose|v:+', 'help|h', 'simulate|n|no', + 'version|V', 'compat|p', 'dir|d=s', 'target|t=s', + 'adopt', 'no-folding', 'dotfiles', + + # clean and pre-compile any regex's at parse time + 'ignore=s' => + sub { + my $regex = $_[1]; + push @{$options{ignore}}, qr($regex\z); + }, + + 'override=s' => + sub { + my $regex = $_[1]; + push @{$options{override}}, qr(\A$regex); + }, + + 'defer=s' => + sub { + my $regex = $_[1]; + push @{$options{defer}}, qr(\A$regex); + }, + + # a little craziness so we can do different actions on the same line: + # a -D, -S, or -R changes the action that will be performed on the + # package arguments that follow it. + 'D|delete' => sub { $action = 'unstow' }, + 'S|stow' => sub { $action = 'stow' }, + 'R|restow' => sub { $action = 'restow' }, + + # Handler for non-option arguments + '<>' => + sub { + if ($action eq 'restow') { + push @pkgs_to_unstow, $_[0]; + push @pkgs_to_stow, $_[0]; + } + elsif ($action eq 'unstow') { + push @pkgs_to_unstow, $_[0]; + } + else { + push @pkgs_to_stow, $_[0]; + } + }, + ) or usage(''); + + usage() if $options{help}; + version() if $options{version}; + + return (\%options, \@pkgs_to_unstow, \@pkgs_to_stow); +} + +sub sanitize_path_options { + my ($options) = @_; + + unless (exists $options->{dir}) { + $options->{dir} = length $ENV{STOW_DIR} ? $ENV{STOW_DIR} : getcwd(); + } + + usage("--dir value '$options->{dir}' is not a valid directory") + unless -d $options->{dir}; + + if (exists $options->{target}) { + usage("--target value '$options->{target}' is not a valid directory") + unless -d $options->{target}; + } + else { + $options->{target} = parent($options->{dir}) || '.'; + } +} + +sub check_packages { + my ($pkgs_to_stow, $pkgs_to_unstow) = @_; + + if (not @$pkgs_to_stow and not @$pkgs_to_unstow) { + usage("No packages to stow or unstow"); + } + + # check package arguments + for my $package (@$pkgs_to_stow, @$pkgs_to_unstow) { + $package =~ s{/+$}{}; # delete trailing slashes + if ($package =~ m{/}) { + error("Slashes are not permitted in package names"); + } + } +} + +#===== SUBROUTINE ============================================================ +# Name : get_config_file_options() +# Purpose : search for default settings in any .stowrc files +# Parameters: none +# Returns : (\%rc_options, \@rc_pkgs_to_unstow, \@rc_pkgs_to_stow) +# Throws : a fatal error if a bad option is given +# Comments : Parses the contents of '~/.stowrc' and '.stowrc' with the same +# parser as the command line options. Additionally expands any +# environment variables or ~ character in --target or --dir +# options. +#============================================================================= +sub get_config_file_options { + my @defaults = (); + my @dirlist = ('.stowrc'); + if (defined($ENV{HOME})) { + unshift(@dirlist, "$ENV{HOME}/.stowrc"); + } + for my $file (@dirlist) { + if (-r $file) { + open my $FILE, '<', $file + or die "Could not open $file for reading\n"; + while (my $line = <$FILE>){ + chomp $line; + push @defaults, split " ", $line; + } + close $FILE or die "Could not close open file: $file\n"; + } + } + + # Parse the options + my ($rc_options, $rc_pkgs_to_unstow, $rc_pkgs_to_stow) = parse_options(@defaults); + + # Expand environment variables and glob characters. + if (exists $rc_options->{target}) { + $rc_options->{target} = + expand_filepath($rc_options->{target}, '--target option'); + } + if (exists $rc_options->{dir}) { + $rc_options->{dir} = + expand_filepath($rc_options->{dir}, '--dir option'); + } + + return ($rc_options, $rc_pkgs_to_unstow, $rc_pkgs_to_stow); +} + +#===== SUBROUTINE ============================================================ +# Name : expand_filepath() +# Purpose : Handles expansions that need to be applied to +# : file paths. Currently expands environment +# : variables and the tilde. +# Parameters: $path => string to perform expansion on. +# : $source => where the string came from +# Returns : String with replacements performed. +# Throws : n/a +# Comments : n/a +#============================================================================= +sub expand_filepath { + my ($path, $source) = @_; + + $path = expand_environment($path, $source); + $path = expand_tilde($path); + + return $path; +} + +#===== SUBROUTINE ============================================================ +# Name : expand_environment() +# Purpose : Expands evironment variables. +# Parameters: $path => string to perform expansion on. +# : $source => where the string came from +# Returns : String with replacements performed. +# Throws : n/a +# Comments : Variable replacement mostly based on SO answer +# : http://stackoverflow.com/a/24675093/558820 +#============================================================================= +sub expand_environment { + my ($path, $source) = @_; + # Replace non-escaped $VAR and ${VAR} with $ENV{VAR} + # If $ENV{VAR} does not exist, perl will raise a warning + # and then happily treat it as an empty string. + $path =~ s/(? string to perform expansion on. +# Returns : String with replacements performed. +# Throws : n/a +# Comments : http://docstore.mik.ua/orelly/perl4/cook/ch07_04.htm +#============================================================================= +sub expand_tilde { + my ($path) = @_; + # Replace tilde with home path. + $path =~ s{ ^ ~ ( [^/]* ) } + { $1 + ? (getpwnam($1))[7] + : ( $ENV{HOME} || $ENV{LOGDIR} + || (getpwuid($<))[7] + ) + }ex; + # Replace espaced tilde with regular tilde. + $path =~ s/\\~/~/g; + return $path +} + + +#===== SUBROUTINE =========================================================== +# Name : usage() +# Purpose : print program usage message and exit +# Parameters: $msg => string to prepend to the usage message +# Returns : n/a +# Throws : n/a +# Comments : if 'msg' is given, then exit with non-zero status +#============================================================================ +sub usage { + my ($msg) = @_; + + if ($msg) { + warn "$ProgramName: $msg\n\n"; + } + + print <<"EOT"; +$ProgramName (GNU Stow) version $Stow::VERSION + +SYNOPSIS: + + $ProgramName [OPTION ...] [-D|-S|-R] PACKAGE ... [-D|-S|-R] PACKAGE ... + +OPTIONS: + + -d DIR, --dir=DIR Set stow dir to DIR (default is current dir) + -t DIR, --target=DIR Set target to DIR (default is parent of stow dir) + + -S, --stow Stow the package names that follow this option + -D, --delete Unstow the package names that follow this option + -R, --restow Restow (like stow -D followed by stow -S) + + --ignore=REGEX Ignore files ending in this Perl regex + --defer=REGEX Don't stow files beginning with this Perl regex + if the file is already stowed to another package + --override=REGEX Force stowing files beginning with this Perl regex + if the file is already stowed to another package + --adopt (Use with care!) Import existing files into stow package + from target. Please read docs before using. + --dotfiles Enables special handling for dotfiles that are + Stow packages that start with "dot-" and not "." + -p, --compat Use legacy algorithm for unstowing + + -n, --no, --simulate Do not actually make any filesystem changes + -v, --verbose[=N] Increase verbosity (levels are from 0 to 5; + -v or --verbose adds 1; --verbose=N sets level) + -V, --version Show stow version number + -h, --help Show this help + +Report bugs to: bug-stow\@gnu.org +Stow home page: +General help using GNU software: +EOT + exit defined $msg ? 1 : 0; +} + +sub version { + print "$ProgramName (GNU Stow) version $Stow::VERSION\n"; + exit 0; +} + +1; # This file is required by t/stow.t + +# Local variables: +# mode: perl +# end: +# vim: ft=perl diff --git a/build-docker.sh b/build-docker.sh new file mode 100755 index 0000000..59010ef --- /dev/null +++ b/build-docker.sh @@ -0,0 +1,12 @@ +#!/usr/bin/env bash + +set -eu + +version=$( tools/get-version ) +imagename=stowtest +image=$imagename:$version + +pushd docker +echo "Building Docker image $image ..." +docker build -t $image . +popd diff --git a/configure b/configure deleted file mode 100755 index 8e79ed4..0000000 --- a/configure +++ /dev/null @@ -1,3297 +0,0 @@ -#! /bin/sh -# Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.61 for stow 2.0.2. -# -# Report bugs to . -# -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. -# This configure script is free software; the Free Software Foundation -# gives unlimited permission to copy, distribute and modify it. -## --------------------- ## -## M4sh Initialization. ## -## --------------------- ## - -# Be more Bourne compatible -DUALCASE=1; export DUALCASE # for MKS sh -if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then - emulate sh - NULLCMD=: - # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which - # is contrary to our usage. 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See the GNU +dnl General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program. If not, see https://www.gnu.org/licenses/. + dnl Process this file with Autoconf to produce configure dnl -AC_INIT([stow], [2.0.2], [bug-stow@gnu.org]) +AC_INIT([stow], [2.4.0], [bug-stow@gnu.org]) AC_PREREQ([2.61]) -AM_INIT_AUTOMAKE([-Wall -Werror]) +AC_CONFIG_AUX_DIR([automake]) +# Unfortunately we have to disable warnings for overrides, because we +# need to override the built-in `check-TESTS' rule and also the TEXI2DVI +# variable. +AM_INIT_AUTOMAKE([-Wall -Werror -Wno-override dist-bzip2 foreign]) AC_PROG_INSTALL -dnl Check for perl on our system -dnl call to AC_SUBST(PERL) is implicit +dnl Check for perl on our system. +dnl Call to AC_SUBST(PERL) is implicit AC_PATH_PROGS([PERL], [perl] [perl5], [false]) if test "x$PERL" = xfalse then - AC_MSG_WARN([WARNING: Perl not found; you must edit line 1 of 'stow']) + AC_MSG_ERROR([Perl not found; check your \$PATH.]) fi +missing_test_deps= +for mod in Test::More Test::Output; do + AC_MSG_CHECKING([$mod]) + if $PERL -M$mod -e 1 2>/dev/null + then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + missing_test_deps="$missing_test_deps $mod" + fi +done + +# N.B. ${var#pattern} will not work with some shells, such as +# Solaris 10's /bin/sh :-( +# +# http://www.gnu.org/software/autoconf/manual/autoconf.html#Portable-Shell +# +# eval `$PERL -V:siteprefix -V:installsitelib` +# pmdir_relative_path="${installsitelib#$siteprefix/}" +# +# This will work: +# +# pmdir_relative_path=`echo "${installsitelib}" | sed -e "s!^$siteprefix/!!"` +# +# but this is cleaner: +pmdir_relative_path=`\ + $PERL -MConfig \ + -wle '($_ = $Config{installsitelib}) + =~ s!^\Q$Config{siteprefix}/!!; \ + print'` + +AC_ARG_WITH( + [pmdir], + AS_HELP_STRING( + [--with-pmdir=DIR], + [Install Perl modules in DIR]), + [PMDIR=${withval}], + [PMDIR='${prefix}'/"$pmdir_relative_path"]) + +AC_ARG_ENABLE( + [relative], + AS_HELP_STRING( + [--enable-relative], + [Load Stow modules relative to the main script]), + [FINDBIN="$enable_relative"], + [FINDBIN=no]) + +AC_CONFIG_COMMANDS_POST([[ + eval pmdir="$PMDIR" + cat <&2 +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +! WARNING! $PERL was missing modules: +! +! $missing_test_deps +! +! The test suite will fail. 'make install' may still render +! a working installation, but this cannot be guaranteed. +! +! Please (re-)read INSTALL, then install the missing modules +! and try again. +!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +EOF + if test -n "$STRICT_TESTS"; then + exit 1 + fi + fi +]]) +AC_SUBST([PMDIR]) +AC_SUBST([FINDBIN]) + AC_CONFIG_FILES([Makefile]) AC_OUTPUT diff --git a/default-ignore-list b/default-ignore-list new file mode 100644 index 0000000..0ebf4fb --- /dev/null +++ b/default-ignore-list @@ -0,0 +1,23 @@ +# Comments and blank lines are allowed. + +RCS +.+,v + +CVS +\.\#.+ # CVS conflict files / emacs lock files +\.cvsignore + +\.svn +_darcs +\.hg + +\.git +\.gitignore +\.gitmodules + +.+~ # emacs backup files +\#.*\# # emacs autosave files + +^/README.* +^/LICENSE.* +^/COPYING diff --git a/ChangeLog b/doc/ChangeLog.OLD similarity index 96% rename from ChangeLog rename to doc/ChangeLog.OLD index b513c25..ba07eb7 100644 --- a/ChangeLog +++ b/doc/ChangeLog.OLD @@ -1,4 +1,4 @@ -2008-01-31 Kahlil Hodgson +Thu Jan 31 2008 Kahlil Hodgson * stow.texi: Austin Wood and Chris Hoobin clean this up for version 2. @@ -49,6 +49,10 @@ Sun Nov 25 19:31:32 2007 Kahlil Hodgson * stow.8: update to reflect Version 2 changes. +Sat Jan 26 16:15:21 2002 Guillaume Morin + + * stow.in: if $ENV{'STOW_DIR'} is set, this becomes the default + Stow directory. Sun Jan 06 12:18:50 2002 Guillaume Morin diff --git a/doc/HOWTO-RELEASE b/doc/HOWTO-RELEASE new file mode 100644 index 0000000..fb72cec --- /dev/null +++ b/doc/HOWTO-RELEASE @@ -0,0 +1,173 @@ +How to make a new release of GNU Stow +===================================== + +Prerequisite reading +-------------------- + +First read the official information for maintainers of GNU software: + + https://www.gnu.org/prep/maintain/ + +Release procedure +----------------- + +- Ensure configure.ac contains the number of the new unreleased + version. This should follow Semantic Versioning as described at: + + http://semver.org/ + +- To make the following steps easier, set the $version shell variable + to the same version number as above, e.g. + + version=$( tools/get-version ) && echo $version + +- Ensure NEWS contains the latest changes. If necessary, commit + any additions: + + git commit -m "Prepare NEWS for $version release" + +- Check CPAN distribution will work via Module::Build: + + - Start from a clean slate: + + make maintainer-clean + autoreconf -iv + + - Generate stow, chkstow, and lib/Stow.pm via: + + eval `perl -V:siteprefix` + automake --add-missing + ./configure --prefix=$siteprefix && make + + (N.B. the CPAN distribution will contain these files, whereas + the GNU distribution will not.) + + - Make sure all the following commands all run successfully: + + perl Build.PL --prefix=/tmp/stow-test + ./Build test + ./Build install + ./Build distcheck + ./Build distmeta + ./Build dist + + - Check META.yml and META.json have the new version number. + They already should if the final step of this document was + carried out after the previous release was publised, but + if not: + + git commit -m "Bump version to $version" + +- Ensure all changes are committed to git. + +- Run make distcheck and ensure that everything looks good. + It should generate the distribution files for you. + +- Run the tests on various Perl versions via Docker: + + ./build-docker.sh + ./test-docker.sh + + Obviously if there are any failures, they will need to be fixed + first, and then repeat the above steps. + +- At this point we have a release candidate. Tag the current git HEAD + with the new version number: + + git tag -s v$version -m "Release $version" + +- Upload the resulting Stow-v7.8.9.tar.gz to CPAN via https://pause.perl.org/ + +- Wait until PAUSE has accepted the upload as a valid module. If you + are the maintainer of the module, you should receive two email + notifications: a CPAN upload confirmation, and a PAUSE indexer + report. This provides some valuable final validation, as learnt the + hard way during the non-release of 2.2.1. + +- Push HEAD and tag to savannah and GitHub: + + git push savannah master + git push --tags savannah + git push github master + git push --tags github + +- Upload the new release to ftp.gnu.org. This is easiest using gnupload: + + - git clone git://git.savannah.gnu.org/gnulib.git + - Copy gnulib/build-aux/gnupload to somewhere on your $PATH + - Run gnupload --to ftp.gnu.org:stow --symlink-regex stow-7.8.9.tar.* + +- Regenerate the documentation for the website: + + # First check out gnulib repository via: + # git clone git://git.savannah.gnu.org/gnulib.git + + # and stow-web CVS repository via the instructions here: + # https://savannah.gnu.org/cvs/?group=stow + + # Set paths: + stow_repo=/path/to/stow/git/repo + stow_web_repo=/path/to/stow-web/CVS/working/dir + gnulib_repo=/path/to/gnulib/git/repo + + cd $stow_repo + export GENDOCS_TEMPLATE_DIR=$gnulib_repo/doc + $gnulib_repo/util/gendocs.sh \ + -s doc/stow.texi \ + -o $stow_web_repo/manual \ + --email bug-stow@gnu.org \ + stow "GNU Stow manual" + + cd $stow_web_repo + # Check that the changes look OK + cvs diff + # Then commit + cvs commit -m "Update manual to v$version" + +- Update the news section of stow.html in the stow-web CVS repository + to mention the new release. + + cd $stow_web_repo + # Check that the changes look OK + cvs diff + # Then commit + cvs commit -m "Update home page to v$version" + +- Send release announcements to + + - info-stow@gnu.org + - stow-devel@gnu.org + - info-gnu@gnu.org + - https://savannah.gnu.org/news/?group=stow + + See http://www.gnu.org/prep/maintain/html_node/Announcements.html for + more on making release announcements. + + Excerpts of NEWS can be formatted for inclusion in the email by + selecting the relevant version subtree via M-x org-mark-element, + minus the "* Changes in version x.y.z", running M-x + org-export-dispatch, and exporting as plain text. + +- Update the git repositories to the next expected version, so that anyone + who builds from git gets a version of Stow which is higher than the release + which was just cut: + + - Increment the patchlevel of the version number in configure.ac. + + - Run this again: + + version=$( tools/get-version ) && echo $version + + - In order to update META.yml and META.json, repeat the same + procedure listed above, starting at "make distclean" and + finishing after "./Build distmeta". + + - Check META.yml and META.json now have the new versions. + + - git add configure.ac META.{yml,json} + + - git commit -m "Bump version to $version for development of next release" + + - git push savannah master + + - git push github master diff --git a/doc/stow.texi b/doc/stow.texi new file mode 100644 index 0000000..a875308 --- /dev/null +++ b/doc/stow.texi @@ -0,0 +1,2136 @@ +\input texinfo @c -*- texinfo -*- +@c %**start of header +@setfilename stow.info +@settitle Stow +@finalout +@c @smallbook +@c @setchapternewpage odd +@c @footnotestyle separate +@c %**end of header + +@include version.texi + +@ifinfo +@end ifinfo + +@copying +This manual describes GNU Stow version @value{VERSION} +(@value{UPDATED}), a program for managing farms of symbolic links. + +Software and documentation is copyrighted by the following: + +@copyright{} 1993, 1994, 1995, 1996 Bob Glickstein @email{bobg+stow@@zanshin.com} +@* +@copyright{} 2000, 2001 Guillaume Morin @email{gmorin@@gnu.org} +@* +@copyright{} 2007 Kahlil (Kal) Hodgson @email{kahlil@@internode.on.net} +@* +@copyright{} 2011 Adam Spiers @email{stow@@adamspiers.org} + +@quotation +Permission is granted to make and distribute verbatim copies of this +manual provided the copyright notice and this permission notice are +preserved on all copies. + +@ignore +Permission is granted to process this file through TeX and print the +results, provided the printed document carries a copying permission +notice identical to this one except for the removal of this paragraph +(this paragraph not being relevant to the printed manual). +@end ignore + +Permission is granted to copy and distribute modified versions of this +manual under the conditions for verbatim copying, provided also that the +section entitled ``GNU General Public License'' is included with the +modified manual, and provided that the entire resulting derived work is +distributed under the terms of a permission notice identical to this +one. + +Permission is granted to copy and distribute translations of this manual +into another language, under the above conditions for modified versions, +except that this permission notice may be stated in a translation +approved by the Free Software Foundation. +@end quotation +@end copying + +@dircategory System administration +@direntry +* Stow: (stow). GNU Stow. +@end direntry + +@c =========================================================================== +@titlepage +@title Stow @value{VERSION} +@subtitle Managing the installation of software packages +@author Bob Glickstein, Zanshin Software, Inc. +@author Kahlil Hodgson, RMIT University, Australia. +@author Guillaume Morin +@author Adam Spiers +@page +@vskip 0pt plus 1filll +@insertcopying +@end titlepage + +@c FIXME: How to include the TOC in the TOC? +@c @node Table of Contents, Top, (dir), (dir) +@c @unnumbered Table of Contents +@contents + +@c ========================================================================== +@ifnottex +@node Top +@top + +This manual describes GNU Stow @value{VERSION} (@value{UPDATED}), a +symlink farm manager which takes distinct sets of software and/or data +located in separate directories on the filesystem, and makes them +appear to be installed in a single directory tree. +@end ifnottex + +@menu +* Introduction:: Description of Stow. +* Terminology:: Terms used by this manual. +* Invoking Stow:: Option summary. +* Ignore Lists:: Controlling what gets stowed. +* Installing Packages:: Using Stow to install. +* Deleting Packages:: Using Stow to uninstall. +* Conflicts:: When Stow can't stow. +* Mixing Operations:: Multiple actions per invocation. +* Multiple Stow Directories:: Further segregating software. +* Target Maintenance:: Cleaning up mistakes. +* Resource Files:: Setting default command line options. +* Compile-time vs. Install-time:: Faking out `make install'. +* Bootstrapping:: When stow and perl are not yet stowed. +* Reporting Bugs:: How, what, where, and when to report. +* Known Bugs:: Don't report any of these. +* GNU General Public License:: Copying terms. +* Index:: Index of concepts. + +@detailmenu + --- The Detailed Node Listing --- + +Ignore Lists + +* Motivation For Ignore Lists:: +* Types And Syntax Of Ignore Lists:: +* Justification For Yet Another Set Of Ignore Files:: + +Advice on changing compilation and installation parameters + +* GNU Emacs:: +* Other FSF Software:: +* Cygnus Software:: +* Perl and Perl 5 Modules:: + +@end detailmenu +@end menu + +@c =========================================================================== +@node Introduction, Terminology, Top, Top +@chapter Introduction + +GNU Stow is a symlink farm manager which takes distinct sets of +software and/or data located in separate directories on the +filesystem, and makes them all appear to be installed in a single +directory tree. + +Originally Stow was born to address the need to administer, upgrade, +install, and remove files in independent software packages without +confusing them with other files sharing the same file system space. +For instance, many years ago it used to be common to compile programs +such as Perl and Emacs from source and install them in +@file{/usr/local}. When one does so, one winds up with the following +files@footnote{As of Perl 4.036 and Emacs 19.22. These are now +ancient releases but the example still holds valid.} in +@file{/usr/local/man/man1}: + +@example +a2p.1 +ctags.1 +emacs.1 +etags.1 +h2ph.1 +perl.1 +s2p.1 +@end example + +@noindent +Now suppose it's time to uninstall Perl. Which man pages +get removed? Obviously @file{perl.1} is one of them, but it should not +be the administrator's responsibility to memorize the ownership of +individual files by separate packages. + +The approach used by Stow is to install each package into its own +tree, then use symbolic links to make it appear as though the files are +installed in the common tree. Administration can be performed in the +package's private tree in isolation from clutter from other packages. +Stow can then be used to update the symbolic links. The structure +of each private tree should reflect the desired structure in the common +tree; i.e. (in the typical case) there should be a @file{bin} directory +containing executables, a @file{man/man1} directory containing section 1 +man pages, and so on. + +While this is useful for keeping track of system-wide and per-user +installations of software built from source, in more recent times +software packages are often managed by more sophisticated package +management software such as +@uref{https://en.wikipedia.org/wiki/Rpm_(software), @command{rpm}}, +@uref{https://en.wikipedia.org/wiki/Dpkg, @command{dpkg}}, and +@uref{https://en.wikipedia.org/wiki/Nix_package_manager, Nix} / +@uref{https://en.wikipedia.org/wiki/GNU_Guix, GNU Guix}, or +language-native package managers such as +@uref{https://en.wikipedia.org/wiki/RubyGems, Ruby's @command{gem}}, +@uref{https://en.wikipedia.org/wiki/Pip_(package_manager), Python's +@command{pip}}, @uref{https://en.wikipedia.org/wiki/Npm_(software), +Javascript's @command{npm}}, and so on. + +However Stow is still used not only for software package management, +but also for other purposes, such as facilitating a more controlled +approach to management of configuration files in the user's home +directory@footnote{@uref{http://brandon.invergo.net/news/2012-05-26-using-gnu-stow-to-manage-your-dotfiles.html}}, +especially when coupled with version control +systems@footnote{@uref{http://lists.gnu.org/archive/html/info-stow/2011-12/msg00000.html}}. + +Stow was inspired by Carnegie Mellon's Depot program, but is +substantially simpler and safer. Whereas Depot required database +files to keep things in sync, Stow stores no extra state between runs, +so there's no danger (as there was in Depot) of mangling directories +when file hierarchies don't match the database. Also unlike Depot, +Stow will never delete any files, directories, or links that appear in +a Stow directory (e.g., @file{/usr/local/stow/emacs}), so it's always +possible to rebuild the target tree (e.g., @file{/usr/local}). + +Stow is implemented as a combination of a Perl script providing a CLI +interface, and a backend Perl module which does most of the work. + +For information about the latest version of Stow, you can refer to +@uref{http://www.gnu.org/software/stow/}. + + +@c =========================================================================== +@node Terminology, Invoking Stow, Introduction, Top +@chapter Terminology + +@indent +@cindex package +A @dfn{package} is a related collection of files and directories that +you wish to administer as a unit --- e.g., Perl or Emacs --- and that needs +to be installed in a particular directory structure --- e.g., with +@file{bin}, @file{lib}, and @file{man} subdirectories. + +@cindex target directory +A @dfn{target directory} is the root of a tree in which one or more +packages wish to @emph{appear} to be installed. @file{/usr/local} is a +common choice for this, but by no means the only such location. Another +common choice is @file{~} (i.e.@: the user's @code{$HOME} directory) in +the case where Stow is being used to manage the user's configuration +(``dotfiles'') and other files in their @code{$HOME}. The examples in +this manual will use @file{/usr/local} as the target directory. + +@cindex stow directory +A @dfn{stow directory} is the root of a tree containing separate +packages in private subtrees. When Stow runs, it uses the current +directory as the default stow directory. The examples in this manual +will use @file{/usr/local/stow} as the stow directory, so that +individual packages will be, for example, @file{/usr/local/stow/perl} +and @file{/usr/local/stow/emacs}. + +@cindex installation image +An @dfn{installation image} is the layout of files and directories +required by a package, relative to the target directory. Thus, the +installation image for Perl includes: a @file{bin} directory containing +@file{perl} and @file{a2p} (among others); an @file{info} directory +containing Texinfo documentation; a @file{lib/perl} directory containing +Perl libraries; and a @file{man/man1} directory containing man pages. + +@quotation Note +This is a @emph{pre-}installation image which exists even before Stow +has installed any symlinks into the target directory which point to it. +@end quotation + +@cindex package directory +@cindex package name +A @dfn{package directory} is the root of a tree containing the +installation image for a particular package. Each package directory +must reside in a stow directory --- e.g., the package directory +@file{/usr/local/stow/perl} must reside in the stow directory +@file{/usr/local/stow}. The @dfn{name} of a package is the name of its +directory within the stow directory --- e.g., @file{perl}. + +Thus, the Perl executable might reside in +@file{/usr/local/stow/perl/bin/perl}, where @file{/usr/local} is the +target directory, @file{/usr/local/stow} is the stow directory, +@file{/usr/local/stow/perl} is the package directory, and +@file{bin/perl} within is part of the installation image. + +@anchor{symlink} +@cindex symlink +@cindex symlink source +@cindex symlink destination +@cindex relative symlink +@cindex absolute symlink +A @dfn{symlink} is a symbolic link, i.e.@: an entry on the filesystem +whose path is sometimes called the @dfn{symlink source}, which points to +another location on the filesystem called the @dfn{symlink destination}. +There is no guarantee that the destination actually exists. + +In general, symlinks can be @dfn{relative} or @dfn{absolute}. A symlink +is absolute when the destination names a full path; that is, one +starting from @file{/}. A symlink is relative when the destination +names a relative path; that is, one not starting from @file{/}. The +destination of a relative symlink is computed starting from the +symlink's own directory, i.e.@: the directory containing the symlink +source. + +@quotation Note +Stow only creates symlinks within the target directory which point to +locations @emph{outside} the target directory and inside the stow +directory. + +Consequently, we avoid referring to symlink destinations as symlink +@emph{targets}, since this would result in the word ``target'' having +two different meanings: + +@enumerate + +@item +the target directory, i.e.@: the directory into which Stow targets +installation, where symlinks are managed by Stow, and + +@item +the destinations of those symlinks. + +@end enumerate + +If we did not avoid the second meaning of ``target'', then it would lead +to confusing language, such as describing Stow as installing symlinks +into the target directory which point to targets @emph{outside} the +target directory. + +Similarly, the word ``source'' can have two different meanings in this +context: + +@enumerate + +@item +the installation image, or some of its contents, and + +@item +the location of symlinks (the ``source'' of the link, vs.@: its +destination). + +@end enumerate + +Therefore it should also be avoided, or at least care taken to ensure +that the meaning is not ambiguous. + +@end quotation + +@c =========================================================================== +@node Invoking Stow, Ignore Lists, Terminology, Top +@chapter Invoking Stow + +The syntax of the @command{stow} command is: + +@example +stow [@var{options}] [@var{action flag}] @var{package @dots{}} +@end example + +@noindent +Each @var{package} is the name of a package (e.g., @samp{perl}) in the stow +directory that we wish to install into (or delete from) the target directory. +The default action is to install the given packages, although alternate actions +may be specified by preceding the package name(s) with an @var{action flag}. + +@noindent +The following options are supported: + +@table @samp + +@item -d @var{dir} +@itemx --dir=@var{dir} +Set the stow directory to @var{dir}. Defaults to the value of the environment +variable @env{STOW_DIR} if set, or the current directory otherwise. + +@item -t @var{dir} +@itemx --target=@var{dir} +Set the target directory to @var{dir} instead of the parent of the stow +directory. Defaults to the parent of the stow directory, so it is typical to +execute @command{stow} from the directory @file{/usr/local/stow}. + +@item --ignore=@var{regexp} +This (repeatable) option lets you suppress acting on files that match the +given Perl regular expression. For example, using the options + +@example +--ignore='.*\.orig' --ignore='.*\.dist' +@end example + +@noindent +will cause stow to ignore files ending in @file{.orig} or @file{.dist}. + +Note that the regular expression is anchored to the end of the filename, +because this is what you will want to do most of the time. + +Also note that by default Stow automatically ignores a ``sensible'' +built-in list of files and directories such as @file{CVS}, editor +backup files, and so on. @xref{Ignore Lists}, for more details. + +@item --defer=@var{regexp} +This (repeatable) option avoids stowing a file matching the given +regular expression, if that file is already stowed by another package. +This is effectively the opposite of @option{--override}. + +(N.B. the name @option{--defer} was chosen in the sense that the package +currently being stowed is treated with lower precedence than any +already installed package, not in the sense that the operation is +being postponed to be run at a later point in time; do not confuse +this nomenclature with the wording used in @ref{Deferred Operation}.) + +For example, the following options + +@example +--defer=man --defer=info +@end example + +@noindent +will cause stow to skip over pre-existing man and info pages. + +Equivalently, you could use @samp{--defer='man|info'} since the +argument is just a Perl regular expression. + +Note that the regular expression is anchored to the beginning of the path +relative to the target directory, because this is what you will want to do most +of the time. + +@item --override=@var{regexp} +This (repeatable) option forces any file matching the regular expression to be +stowed, even if the file is already stowed to another package. For example, +the following options + +@example +--override=man --override=info +@end example + +@noindent +will permit stow to overwrite links that point to pre-existing man and info +pages that are owned by stow and would otherwise cause a conflict. + +The regular expression is anchored to the beginning of the path relative to +the target directory, because this is what you will want to do most of the time. + +@cindex dotfiles +@item --dotfiles + +Enable special handling for @emph{dotfiles} (files or folders whose +name begins with a period) in the package directory. If this option is +enabled, Stow will add a preprocessing step for each file or folder +whose name begins with @samp{dot-}, and replace the @samp{dot-} prefix +in the name by a period @samp{.}. This is useful when Stow is used to +manage collections of dotfiles, to avoid having a package directory +full of hidden files. + +For example, suppose we have a package containing two files, +@file{stow/dot-bashrc} and @file{stow/dot-emacs.d/init.el}. With this +option, Stow will create symlinks from @file{.bashrc} to +@file{stow/dot-bashrc} and from @file{.emacs.d/init.el} to +@file{stow/dot-emacs.d/init.el}. Any other files, whose name does not +begin with @samp{dot-}, will be processed as usual. + +@item --no-folding + +This disables any further tree folding (@pxref{tree folding}) or +refolding (@pxref{tree refolding}). If a new subdirectory is +encountered whilst stowing a new package, the subdirectory is created +within the target, and its contents are symlinked, rather than just +creating a symlink for the directory. If removal of symlinks whilst +unstowing a package causes a subtree to be foldable (i.e.@: only +containing symlinks to a single package), that subtree will not be +removed and replaced with a symlink. + +@cindex adopting existing files +@item --adopt +@strong{Warning!} This behaviour is specifically intended to alter the +contents of your stow directory. If you do not want that, this option +is not for you. + +When stowing, if a target is encountered which already exists but is a +plain file (and hence not owned by any existing stow package), then +normally Stow will register this as a conflict and refuse to proceed. +This option changes that behaviour so that the file is moved to the +same relative place within the package's installation image within the +stow directory, and then stowing proceeds as before. So effectively, +the file becomes adopted by the stow package, without its contents +changing. + +This is particularly useful when the stow package is under the control +of a version control system, because it allows files in the target +tree, with potentially different contents to the equivalent versions +in the stow package's installation image, to be adopted into the +package, then compared by running something like @samp{git diff ...} +inside the stow package, and finally either kept (e.g. via @samp{git +commit ...}) or discarded (@samp{git checkout HEAD ...}). + +@cindex dry run +@cindex simulated run +@item -n +@itemx --no +@itemx --simulate +Do not perform any operations that modify the file system; in combination with +@option{-v} can be used to merely show what would happen. + +@cindex verbosity levels +@item -v +@itemx --verbose[=@var{n}] +Send verbose output to standard error describing what Stow is +doing. Verbosity levels are from 0 to 5; 0 is the default. Using +@option{-v} or @option{--verbose} increases the verbosity by one; using +@samp{--verbose=@var{n}} sets it to @var{n}. + +@item -p +@itemx --compat +Scan the whole target tree when unstowing. By default, only directories +specified in the @dfn{installation image} are scanned during an unstow +operation. Previously Stow scanned the whole tree, which can be +prohibitive if your target tree is very large, but on the other hand has +the advantage of unstowing previously stowed links which are no longer +present in the installation image and therefore orphaned. This option +restores the legacy behaviour; however, the @option{--badlinks} option +to the @command{chkstow} utility may be a better way of ensuring that +your installation does not have any dangling symlinks (@pxref{Target +Maintenance}). + +@item -V +@itemx --version +Show Stow version number, and exit. + +@item -h +@itemx --help +Show Stow command syntax, and exit. +@end table + +The following @var{action flags} are supported: + +@table @samp +@item -D +@itemx --delete +Delete (unstow) the package name(s) that follow this option from the @dfn{target +directory}. This option may be repeated any number of times. + +@item -R +@itemx --restow +Restow (first unstow, then stow again) the package names that follow this +option. This is useful for pruning obsolete symlinks from the target tree +after updating the software in a package. This option may be repeated any +number of times. + +@item -S +@item --stow +explictly stow the package name(s) that follow this option. May be +omitted if you are not using the @option{-D} or @option{-R} options in the +same invocation. @xref{Mixing Operations}, for details of when you +might like to use this feature. This option may be repeated any number +of times. +@end table + + +@c =========================================================================== +@node Ignore Lists, Installing Packages, Invoking Stow, Top +@chapter Ignore Lists + +@cindex ignore lists +@cindex ignoring files and directories + +@menu +* Motivation For Ignore Lists:: +* Types And Syntax Of Ignore Lists:: +* Justification For Yet Another Set Of Ignore Files:: +@end menu + +@c =========================================================================== +@node Motivation For Ignore Lists, Types And Syntax Of Ignore Lists, Ignore Lists, Ignore Lists +@section Motivation For Ignore Lists + +In many situations, there will exist files under the package +directories which it would be undesirable to stow into the target +directory. For example, files related version control such as +@file{.gitignore}, @file{CVS}, @file{*,v} (RCS files) should typically +not have symlinks from the target tree pointing to them. Also there +may be files or directories relating to the build of the package which +are not needed at run-time. + +In these cases, it can be rather cumbersome to specify a +@option{--ignore} parameter for each file or directory to be ignored. +This could be worked around by ensuring the existence of +@file{~/.stowrc} containing multiple @option{--ignore} lines, or if a +different set of files/directories should be ignored depending on +which stow package is involved, a @file{.stowrc} file for each stow +package, but this would require the user to ensure that they were in +the correct directory before invoking stow, which would be tedious and +error-prone. Furthermore, since Stow shifts parameters from +@file{.stowrc} onto ARGV at run-time, it could clutter up the process +table with excessively long parameter lists, or even worse, exceed the +operating system's limit for process arguments. + +@cindex ignore lists +Therefore in addition to @option{--ignore} parameters, Stow provides a +way to specify lists of files and directories to ignore. + +@c =========================================================================== +@node Types And Syntax Of Ignore Lists, Justification For Yet Another Set Of Ignore Files, Motivation For Ignore Lists, Ignore Lists +@section Types And Syntax Of Ignore Lists + +If you put Perl regular expressions, one per line, in a +@file{.stow-local-ignore} file within any top level package directory, +in which case any file or directory within that package matching any +of these regular expressions will be ignored. In the absence of this +package-specific ignore list, Stow will instead use the contents of +@file{~/.stow-global-ignore}, if it exists. If neither the +package-local or global ignore list exist, Stow will use its own +built-in default ignore list, which serves as a useful example of the +format of these ignore list files: + +@example +@verbatiminclude default-ignore-list +@end example + +Stow first iterates through the chosen ignore list (built-in, global, +or package-local) as per above, stripping out comments (if you want to +include the @samp{#} symbol in a regular expression, escape it with a +blackslash) and blank lines, placing each regular expressions into one +of two sets depending on whether it contains the @samp{/} forward +slash symbol. + +Then in order to determine whether a file or directory should be +ignored: + +@enumerate +@item +Stow calculates its path relative to the top-level package directory, +prefixing that with @samp{/}. If any of the regular expressions +containing a @samp{/} @emph{exactly}@footnote{Exact matching means the +regular expression is anchored at the beginning and end, in contrast +to unanchored regular expressions which will match a substring.} match +a subpath@footnote{In this context, ``subpath'' means a contiguous +subset of path segments; e.g for the relative path +@file{one/two/three}, there are six valid subpaths: @file{one}, +@file{two}, @file{three}, @file{one/two}, @file{two/three}, +@file{one/two/three}.} of this relative path, then the file or +directory will be ignored. + +@item +If none of the regular expressions containing a @samp{/} match in the +manner described above, Stow checks whether the +@emph{basename}@footnote{The ``basename'' is the name of the file or +directory itself, excluding any directory path prefix - as returned by +the @command{basename} command.} of the file or directory matches +@emph{exactly} against the remaining regular expressions which do not +contain a @samp{/}, and if so, ignores the file or directory. + +@item +Otherwise, the file or directory is not ignored. +@end enumerate + +@c N.B. if you change the examples below, please also consider +@c updating test_examples_in_manual() in t/ignore.t. + +For example, if a file @file{bazqux} is in the @file{foo/bar} +subdirectory of the package directory, Stow would use +@samp{/foo/bar/bazqux} as the text for matching against regular +expressions which contain @samp{/}, and @samp{bazqux} as the text for +matching against regular expressions which don't contain @samp{/}. +Then regular expressions @samp{bazqux}, @samp{baz.*}, @samp{.*qux}, +@samp{bar/.*x}, and @samp{^/foo/.*qux} would all match (causing the +file to be ignored), whereas @samp{bar}, @samp{baz}, @samp{qux}, and +@samp{o/bar/b} would not (although @samp{bar} would cause its parent +directory to be ignored and prevent Stow from recursing into that +anyway, in which case the file @file{bazqux} would not even be +considered for stowing). + +As a special exception to the above algorithm, any +@file{.stow-local-ignore} present in the top-level package directory +is @emph{always} ignored, regardless of the contents of any ignore +list, because this file serves no purpose outside the stow directory. + +@c =========================================================================== +@node Justification For Yet Another Set Of Ignore Files, , Types And Syntax Of Ignore Lists, Ignore Lists +@section Justification For Yet Another Set Of Ignore Files + +The reader may note that this format is very similar to existing +ignore list file formats, such as those for @command{cvs}, @command{git}, +@command{rsync} etc., and wonder if another set of ignore lists is +justified. However there are good reasons why Stow does not simply +check for the presence of say, @file{.cvsignore}, and use that if it +exists. Firstly, there is no guarantee that a stow package would +contain any version control meta-data, or permit introducing this if +it didn't already exist. + +Secondly even if it did, version control system ignore lists generally +reflect @emph{build-time} ignores rather than @emph{install-time}, and +there may be some intermediate or temporary files on those ignore +lists generated during development or at build-time which it would be +inappropriate to stow, even though many files generated at build-time +(binaries, libraries, documentation etc.) certainly do need to be +stowed. Similarly, if a file is @emph{not} in the version control +system's ignore list, there is no way of knowing whether the file is +intended for end use, let alone whether the version control system is +tracking it or not. + +Therefore it seems clear that ignore lists provided by version control +systems do not provide sufficient information for Stow to determine +which files and directories to stow, and so it makes sense for Stow to +support independent ignore lists. + +@c =========================================================================== +@node Installing Packages, Deleting Packages, Ignore Lists, Top +@chapter Installing Packages + +@cindex installation +The default action of Stow is to install a package. This means creating +symlinks in the target tree that point into the package tree. Stow +attempts to do this with as few symlinks as possible; in other words, if +Stow can create a single symlink that points to an entire subtree within +the package tree, it will choose to do that rather than create a +directory in the target tree and populate it with symlinks. + +@anchor{tree folding} +@section Tree folding +@cindex tree folding +@cindex directory folding +@cindex folding trees +For example, suppose that no packages have yet been installed in +@file{/usr/local}; it's completely empty (except for the @file{stow} +subdirectory, of course). Now suppose the Perl package is installed. +Recall that it includes the following directories in its installation +image: @file{bin}; @file{info}; @file{lib/perl}; @file{man/man1}. +Rather than creating the directory @file{/usr/local/bin} and populating +it with symlinks to @file{../stow/perl/bin/perl} and +@file{../stow/perl/bin/a2p} (and so on), Stow will create a +single symlink, @file{/usr/local/bin}, which points to +@file{stow/perl/bin}. In this way, it still works to refer to +@file{/usr/local/bin/perl} and @file{/usr/local/bin/a2p}, and fewer +symlinks have been created. This is called @dfn{tree folding}, since an +entire subtree is ``folded'' into a single symlink. + +To complete this example, Stow will also create the symlink +@file{/usr/local/info} pointing to @file{stow/perl/info}; the symlink +@file{/usr/local/lib} pointing to @file{stow/perl/lib}; and the symlink +@file{/usr/local/man} pointing to @file{stow/perl/man}. + +Now suppose that instead of installing the Perl package into an empty +target tree, the target tree is not empty to begin with. Instead, it +contains several files and directories installed under a different +system-administration philosophy. In particular, @file{/usr/local/bin} +already exists and is a directory, as are @file{/usr/local/lib} and +@file{/usr/local/man/man1}. In this case, Stow will descend into +@file{/usr/local/bin} and create symlinks to +@file{../stow/perl/bin/perl} and @file{../stow/perl/bin/a2p} (etc.), +and it will descend into @file{/usr/local/lib} and create the +tree-folding symlink @file{perl} pointing to +@file{../stow/perl/lib/perl}, and so on. As a rule, Stow only +descends as far as necessary into the target tree when it can create a +tree-folding symlink. However, this behaviour can be changed via +the @option{--no-folding} option; @pxref{Invoking Stow}. + +@anchor{Tree unfolding} +@section Tree unfolding +@cindex splitting open folded trees +@cindex unfolding trees +@cindex tree unfolding +@cindex tree unsplitting +The time often comes when a tree-folding symlink has to be undone +because another package uses one or more of the folded subdirectories in +its installation image. This operation is called @dfn{splitting open} or +@dfn{unfolding} a folded tree. It involves removing the original symlink from +the target tree, creating a true directory in its place, and then populating the +new directory with symlinks to the newly-installed package @emph{and} to +the old package that used the old symlink. For example, suppose that +after installing Perl into an empty @file{/usr/local}, we wish to +install Emacs. Emacs's installation image includes a @file{bin} +directory containing the @file{emacs} and @file{etags} executables, +among others. Stow must make these files appear to be installed +in @file{/usr/local/bin}, but presently @file{/usr/local/bin} is a +symlink to @file{stow/perl/bin}. Stow therefore takes the +following steps: the symlink @file{/usr/local/bin} is deleted; the +directory @file{/usr/local/bin} is created; links are made from +@file{/usr/local/bin} to @file{../stow/emacs/bin/emacs} and +@file{../stow/emacs/bin/etags}; and links are made from +@file{/usr/local/bin} to @file{../stow/perl/bin/perl} and +@file{../stow/perl/bin/a2p}. + +@section Ownership +@cindex ownership +When splitting open a folded tree, Stow makes sure that the +symlink it is about to remove points inside a valid package in the +current stow directory. @emph{Stow will never delete anything +that it doesn't own}. Stow ``owns'' everything living in the +target tree that points into a package in the stow directory. Anything +Stow owns, it can recompute if lost: symlinks that point into a package in +the stow directory, or directories that only contain symlinks that stow +``owns''. Note that by this definition, Stow doesn't ``own'' anything +@emph{in} the stow directory or in any of the packages. + +@section Conflicts during installation +@cindex conflicts +@cindex installation conflicts +If Stow needs to create a directory or a symlink in the target +tree and it cannot because that name is already in use and is not owned +by Stow, then a @dfn{conflict} has arisen. @xref{Conflicts}. + + +@c =========================================================================== +@node Deleting Packages, Conflicts, Installing Packages, Top +@chapter Deleting Packages + +@cindex deletion +When the @option{-D} option is given, the action of Stow is to +delete a package from the target tree. Note that Stow will not +delete anything it doesn't ``own''. Deleting a package does @emph{not} +mean removing it from the stow directory or discarding the package +tree. + +To delete a package, Stow recursively scans the target tree, skipping over any +directory that is not included in the installation image.@footnote{This +approach was introduced in version 2 of GNU Stow. Previously, the whole +target tree was scanned and stow directories were explicitly omitted. This +became problematic when dealing with very large installations. The only +situation where this is useful is if you accidentally delete a directory in +the package tree, leaving you with a whole bunch of dangling links. Note that +you can enable the old approach with the @option{-p} option. Alternatively, you can +use the @option{--badlinks} option get stow to search for dangling links in your target tree and remove the offenders manually.} +For example, if the target directory is @file{/usr/local} and the +installation image for the package being deleted has only a @file{bin} +directory and a @file{man} directory at the top level, then we only scan +@file{/usr/local/bin} and @file{/usr/local/man}, and not +@file{/usr/local/lib} or @file{/usr/local/share}, or for that matter +@file{/usr/local/stow}. Any symlink it finds that points into the package +being deleted is removed. Any directory that contained only symlinks to the +package being deleted is removed. + +@anchor{tree refolding} +@section Refolding ``foldable'' trees. +@cindex refolding trees +@cindex tree refolding + +After removing symlinks and empty subdirectories, any directory that +contains only symlinks to a single other package is considered to be a +previously ``folded'' tree that was ``split open.'' Stow will refold +the tree by removing the symlinks to the surviving package, removing +the directory, then linking the directory back to the surviving +package. However, this behaviour can be prevented via the +@option{--no-folding} option; @pxref{Invoking Stow}. + +@c =========================================================================== +@node Conflicts, Mixing Operations, Deleting Packages, Top +@chapter Conflicts + +@cindex conflicts +If, during installation, a file or symlink exists in the target tree and +has the same name as something Stow needs to create, and if the +existing name is not a folded tree that can be split open, then a +@dfn{conflict} has arisen. A conflict also occurs if a directory exists +where Stow needs to place a symlink to a non-directory. On the +other hand, if the existing name is merely a symlink that already points +where Stow needs it to, then no conflict has occurred. (Thus it +is harmless to install a package that has already been installed.) + +For complex packages, scanning the stow and target trees in tandem, +and deciding whether to make directories or links, split-open or fold +directories, can actually take a long time (a number of seconds). +Moreover, an accurate analysis of potential conflicts requires us to +take into account all of these operations. + +@anchor{Deferred Operation} +@section Deferred Operation +@cindex deferred operation + +Since version 2.0, Stow now adopts a two-phase algorithm, first +scanning for any potential conflicts before any stowing or unstowing +operations are performed. If any conflicts are found, they are +displayed and then Stow terminates without making any modifications to +the filesystem. This means that there is much less risk of a package +being partially stowed or unstowed due to conflicts. + +Prior to version 2.0, if a conflict was discovered, the stow or unstow +operation could be aborted mid-flow, leaving the target tree in an +inconsistent state. + +@c =========================================================================== +@node Mixing Operations, Multiple Stow Directories, Conflicts, Top +@chapter Mixing Operations +@cindex mixing operations + +Since version 2.0, multiple distinct actions can be specified in a single +invocation of GNU Stow. For example, to update an installation of Emacs from +version 21.3 to 21.4a you can now do the following: + +@example +stow -D emacs-21.3 -S emacs-21.4a +@end example + +@noindent +which will replace emacs-21.3 with emacs-21.4a using a single invocation. + +@cindex deferred operation +This is much faster and cleaner than performing two separate +invocations of stow, because redundant folding/unfolding operations +can be factored out. In addition, all the operations are calculated +and merged before being executed (@pxref{Deferred Operation}), so the +amount of time in which GNU Emacs is unavailable is minimised. + +You can mix and match any number of actions, for example, + +@example +stow -S pkg1 pkg2 -D pkg3 pkg4 -S pkg5 -R pkg6 +@end example + +@noindent +will unstow pkg3, pkg4 and pkg6, then stow pkg1, pkg2, pkg5 and pkg6. + +@c =========================================================================== +@node Multiple Stow Directories, Target Maintenance, Mixing Operations, Top +@chapter Multiple Stow Directories + +If there are two or more system administrators who wish to maintain +software separately, or if there is any other reason to want two or more +stow directories, it can be done by creating a file named @file{.stow} +in each stow directory. The presence of @file{/usr/local/foo/.stow} +informs Stow that, though @file{foo} is not the current stow +directory, even if it is a subdirectory of the target directory, +nevertheless it is @emph{a} stow directory and as such Stow +doesn't ``own'' anything in it (@pxref{Installing Packages}). This will +protect the contents of @file{foo} from a @samp{stow -D}, for instance. + +@c There is a test for the following case in t/examples.t: + +When multiple stow directories share a target tree, if a tree-folding +symlink is encountered and needs to be split open during an +installation, as long as the top-level stow directory into which the +existing symlink points contains @file{.stow}, Stow knows how to split +open the tree in the correct manner. + +@c =========================================================================== +@node Target Maintenance, Resource Files, Multiple Stow Directories, Top +@chapter Target Maintenance + +@cindex maintenance +From time to time you will need to clean up your target tree. Since +version 2, Stow provides a new utility @command{chkstow} to help with +this. It includes three operational modes which performs checks that +would generally be too expensive to be performed during normal stow +execution. + +The syntax of the @command{chkstow} command is: + +@example +chkstow [@var{options}] +@end example + +@noindent +The following options are supported: + +@table @samp + +@item -t @var{dir} +@itemx --target=@var{dir} +Set the target directory to @var{dir} instead of the parent of the stow +directory. Defaults to the parent of the stow directory, so it is typical to +execute @command{stow} from the directory @file{/usr/local/stow}. + +@item -b +@itemx --badlinks +Checks target directory for bogus symbolic links. That is, links that point to +non-existent files. + +@item -a +@itemx --aliens +Checks for files in the target directory that are not symbolic links. The +target directory should be managed by stow alone, except for directories that +contain a @file{.stow} file. + +@item -l +@itemx --list +Will display the target package for every symbolic link in the stow target +directory. + +@end table + +@c =========================================================================== +@node Resource Files, Compile-time vs. Install-time, Target Maintenance, Top +@chapter Resource Files +@cindex resource files +@cindex configuration files + +Default command line options may be set in @file{.stowrc} (current +directory) or @file{~/.stowrc} (home directory). These are parsed in +that order, and are appended together if they both exist. The effect of +the options in the resource file is similar to simply prepending the +options to the command line. This feature can be used for some +interesting effects. + +For example, suppose your site uses more than one stow directory, perhaps in +order to share around responsibilities with a number of systems +administrators. One of the administrators might have the following in their +@file{~/.stowrc} file: + +@example +--dir=/usr/local/stow2 +--target=/usr/local +--ignore='~' +--ignore='^CVS' +@end example + +so that the @command{stow} command will default to operating on the +@file{/usr/local/stow2} directory, with @file{/usr/local} as the +target, and ignoring vi backup files and CVS directories. + +If you had a stow directory @file{/usr/local/stow/perl-extras} that +was only used for Perl modules, then you might place the following in +@file{/usr/local/stow/perl-extras/.stowrc}: + +@example +--dir=/usr/local/stow/perl-extras +--target=/usr/local +--override=bin +--override=man +--ignore='perllocal\.pod' +--ignore='\.packlist' +--ignore='\.bs' +@end example + +so that when you are in the @file{/usr/local/stow/perl-extras} +directory, @command{stow} will regard any subdirectories as stow +packages, with @file{/usr/local} as the target (rather than the +immediate parent directory @file{/usr/local/stow}), overriding any +pre-existing links to bin files or man pages, and ignoring some cruft +that gets installed by default. + +If an option is provided both on the command line and in a resource file, +the command line option takes precedence. For options that provide a single +value, such as @command{--target} or @command{--dir}, the command line +option will overwrite any options in the resource file. For options that can +be given more than once, @command{--ignore} for example, command line +options and resource options are appended together. + +For options that take a file path, environment variables and the tilde +character (@command{~}) are expanded. An environment variable can be +given in either the @command{$VAR} or @command{$@{VAR@}} form. To +prevent expansion, escape the @command{$} or @command{~} with a +backslash. + +The options @command{-D}, @command{-S}, and @command{-R} are ignored in +resource files. This is also true of any package names given in the +resource file. + +@c =========================================================================== +@node Compile-time vs. Install-time, Bootstrapping, Resource Files, Top +@chapter Compile-time vs. Install-time + +Software whose installation is managed with Stow needs to be installed +in one place (the package directory, e.g. @file{/usr/local/stow/perl}) +but needs to appear to run in another place (the target tree, e.g., +@file{/usr/local}). Why is this important? What's wrong with Perl, for +instance, looking for its files in @file{/usr/local/stow/perl} instead +of in @file{/usr/local}? + +The answer is that there may be another package, e.g., +@file{/usr/local/stow/perl-extras}, stowed under @file{/usr/local}. If +Perl is configured to find its files in @file{/usr/local/stow/perl}, it +will never find the extra files in the @samp{perl-extras} package, even +though they're intended to be found by Perl. On the other hand, if Perl +looks for its files in @file{/usr/local}, then it will find the +intermingled Perl and @samp{perl-extras} files. + +This means that when you compile a package, you must tell it the +location of the run-time, or target tree; but when you install it, you +must place it in the stow tree. + +@section Advice on changing compilation and installation parameters +Some software packages allow you to specify, at compile-time, separate +locations for installation and for run-time. Perl is one such package; +see @ref{Perl and Perl 5 Modules}. Others allow you to compile the +package, then give a different destination in the @samp{make install} +step without causing the binaries or other files to get rebuilt. Most +GNU software falls into this category; Emacs is a notable exception. +@xref{GNU Emacs}, and @ref{Other FSF Software}. + +Still other software packages cannot abide the idea of separate +installation and run-time locations at all. If you try to @samp{make +install prefix=/usr/local/stow/@var{foo}}, then first the whole package +will be recompiled to hardwire the @file{/usr/local/stow/@var{foo}} +path. With these packages, it is best to compile normally, then run +@samp{make -n install}, which should report all the steps needed to +install the just-built software. Place this output into a file, edit +the commands in the file to remove recompilation steps and to reflect +the Stow-based installation location, and execute the edited file as a +shell script in place of @samp{make install}. Be sure to execute the +script using the same shell that @samp{make install} would have used. + +(If you use GNU Make and a shell [such as GNU bash] that understands +@command{pushd} and @command{popd}, you can do the following: + +@enumerate +@item +Replace all lines matching @samp{make[@var{n}]: Entering directory +@var{dir}} with @samp{pushd @var{dir}}. +@item +Replace all lines matching @samp{make[@var{n}]: Leaving directory +@var{dir}} with @samp{popd}. +@item +Delete all lines matching @samp{make[@var{n}]: Nothing to be done for +@var{rule}}. +@end enumerate + +Then find other lines in the output containing @command{cd} or @command{make} +commands and rewrite or delete them. In particular, you should be able +to delete sections of the script that resemble this: + +@example +for i in @var{dir_1} @var{dir_2} @r{@dots{}}; do \ + (cd $i; make @var{args} @r{@dots{}}) \ +done +@end example + +@noindent +Note, that's ``should be able to,'' not ``can.'' Be sure to modulate +these guidelines with plenty of your own intelligence. + +The details of stowing some specific packages are described in the +following sections. + +@menu +* GNU Emacs:: +* Other FSF Software:: +* Cygnus Software:: +* Perl and Perl 5 Modules:: +@end menu + +@c --------------------------------------------------------------------------- +@node GNU Emacs, Other FSF Software, Compile-time vs. Install-time, Compile-time vs. Install-time +@section GNU Emacs + +Although the Free Software Foundation has many enlightened practices +regarding Makefiles and software installation (see @pxref{Other FSF +Software}), Emacs, its flagship program, doesn't quite follow the +rules. In particular, most GNU software allows you to write: + +@example +make +make install prefix=/usr/local/stow/@var{package} +@end example + +@noindent +If you try this with Emacs, then the new value for @var{prefix} in the +@samp{make install} step will cause some files to get recompiled with +the new value of @var{prefix} wired into them. In Emacs 19.23 and +later,@footnote{As I write this, the current version of Emacs is 19.31.} +the way to work around this problem is: + +@example +make +make install-arch-dep install-arch-indep prefix=/usr/local/stow/emacs +@end example + +In 19.22 and some prior versions of Emacs, the workaround was: + +@example +make +make do-install prefix=/usr/local/stow/emacs +@end example + +@c --------------------------------------------------------------------------- +@node Other FSF Software, Cygnus Software, GNU Emacs, Compile-time vs. Install-time +@section Other FSF Software + +The Free Software Foundation, the organization behind the GNU project, +has been unifying the build procedure for its tools for some time. +Thanks to its tools @samp{autoconf} and @samp{automake}, most packages +now respond well to these simple steps, with no other intervention +necessary: + +@example +./configure @var{options} +make +make install prefix=/usr/local/stow/@var{package} +@end example + +Hopefully, these tools can evolve to be aware of Stow-managed packages, +such that providing an option to @samp{configure} can allow @samp{make} +and @samp{make install} steps to work correctly without needing to +``fool'' the build process. + +@c --------------------------------------------------------------------------- +@node Cygnus Software, Perl and Perl 5 Modules, Other FSF Software, Compile-time vs. Install-time +@section Cygnus Software + +Cygnus is a commercial supplier and supporter of GNU software. It has +also written several of its own packages, released under the terms of +the GNU General Public License; and it has taken over the maintenance of +other packages. Among the packages released by Cygnus are @samp{gdb}, +@samp{gnats}, and @samp{dejagnu}. + +Cygnus packages have the peculiarity that each one unpacks into a +directory tree with a generic top-level Makefile, which is set up to +compile @emph{all} of Cygnus' packages, any number of which may reside +under the top-level directory. In other words, even if you're only +building @samp{gnats}, the top-level Makefile will look for, and try to +build, @file{gdb} and @file{dejagnu} subdirectories, among many others. + +The result is that if you try @samp{make -n install +prefix=/usr/local/stow/@var{package}} at the top level of a Cygnus +package, you'll get a bewildering amount of output. It will then be +very difficult to visually scan the output to see whether the install +will proceed correctly. Unfortunately, it's not always clear how to +invoke an install from the subdirectory of interest. + +In cases like this, the best approach is to run your @samp{make install +prefix=@r{@dots{}}}, but be ready to interrupt it if you detect that it +is recompiling files. Usually it will work just fine; otherwise, +install manually. + +@c --------------------------------------------------------------------------- +@node Perl and Perl 5 Modules, , Cygnus Software, Compile-time vs. Install-time +@section Perl and Perl 5 Modules + +Perl 4.036 allows you to specify different locations for installation +and for run-time. It is the only widely-used package in this author's +experience that allows this, though hopefully more packages will adopt +this model. + +Unfortunately, the authors of Perl believed that only AFS sites need +this ability. The configuration instructions for Perl 4 misleadingly +state that some occult means are used under AFS to transport files from +their installation tree to their run-time tree. In fact, that confusion +arises from the fact that Depot, Stow's predecessor, originated at +Carnegie Mellon University, which was also the birthplace of AFS. CMU's +need to separate install-time and run-time trees stemmed from its use of +Depot, not from AFS. + +The result of this confusion is that Perl 5's configuration script +doesn't even offer the option of separating install-time and run-time +trees @emph{unless} you're running AFS. Fortunately, after you've +entered all the configuration settings, Perl's setup script gives you +the opportunity to edit those settings in a file called +@file{config.sh}. When prompted, you should edit this file and replace +occurrences of + +@example +inst@r{@dots{}}/usr/local@r{@dots{}} +@end example + +@noindent +with + +@example +inst@r{@dots{}}/usr/local/stow/perl@r{@dots{}} +@end example + +@noindent +You can do this with the following Unix command: + +@example +sed 's,^\(inst.*/usr/local\),\1/stow/perl,' config.sh > config.sh.new +mv config.sh.new config.sh +@end example + +Hopefully, the Perl authors will correct this deficiency in Perl 5's +configuration mechanism. + +Perl 5 modules---i.e., extensions to Perl 5---generally conform to a set +of standards for building and installing them. The standard says that +the package comes with a top-level @file{Makefile.PL}, which is a Perl +script. When it runs, it generates a @file{Makefile}. + +If you followed the instructions above for editing @file{config.sh} when +Perl was built, then when you create a @file{Makefile} from a +@file{Makefile.PL}, it will contain separate locations for run-time +(@file{/usr/local}) and install-time (@file{/usr/local/stow/perl}). +Thus you can do + +@example +perl Makefile.PL +make +make install +@end example + +@noindent +and the files will be installed into @file{/usr/local/stow/perl}. +However, you might prefer each Perl module to be stowed separately. In +that case, you must edit the resulting Makefile, replacing +@file{/usr/local/stow/perl} with @file{/usr/local/stow/@var{module}}. +The best way to do this is: + +@example +perl Makefile.PL +find . -name Makefile -print | \ + xargs perl -pi~ -e 's,^(INST.*/stow)/perl,$1/@var{module},;' +make +make install +@end example + +@noindent +(The use of @samp{find} and @samp{xargs} ensures that all Makefiles in +the module's source tree, even those in subdirectories, get edited.) A +good convention to follow is to name the stow directory for a Perl +@var{module} @file{cpan.@var{module}}, where @samp{cpan} stands for +Comprehensive Perl Archive Network, a collection of FTP sites that is +the source of most Perl 5 extensions. This way, it's easy to tell at a +glance which of the subdirectories of @file{/usr/local/stow} are Perl 5 +extensions. + +When you stow separate Perl 5 modules separately, you are likely to +encounter conflicts (@pxref{Conflicts}) with files named @file{.exists} +and @file{perllocal.pod}. One way to work around this is to remove +those files before stowing the module. If you use the +@file{cpan.@var{module}} naming convention, you can simply do this: + +@example +cd /usr/local/stow +find cpan.* \( -name .exists -o -name perllocal.pod \) -print | \ + xargs rm +@end example + + +@c --------------------------------------------------------------------------- +@node Bootstrapping, Reporting Bugs, Compile-time vs. Install-time, Top +@chapter Bootstrapping + +Suppose you have a stow directory all set up and ready to go: +@file{/usr/local/stow/perl} contains the Perl installation, +@file{/usr/local/stow/stow} contains Stow itself, and perhaps you have +other packages waiting to be stowed. You'd like to be able to do this: + +@example +cd /usr/local/stow +stow -vv * +@end example + +@noindent +but @command{stow} is not yet in your @env{PATH}. Nor can you do this: + +@example +cd /usr/local/stow +stow/bin/stow -vv * +@end example + +@noindent +because the @samp{#!} line at the beginning of @command{stow} tries to +locate Perl (usually in @file{/usr/local/bin/perl}), and that won't be +found. The solution you must use is: + +@example +cd /usr/local/stow +perl/bin/perl stow/bin/stow -vv * +@end example + +@c =========================================================================== +@node Reporting Bugs, Known Bugs, Bootstrapping, Top +@chapter Reporting Bugs + +You can report bugs to the current maintainers in one of three ways: + +@enumerate +@item +Send e-mail to @email{bug-stow@@gnu.org}. + +@item +File an issue in @uref{https://savannah.gnu.org/bugs/?group=stow, +the Savannah bug tracker}. + +@item +File an issue in +@uref{https://github.com/aspiers/stow/issues/, the GitHub project}. +@end enumerate + +While GitHub is arguably the most convenient of these three options, it +@uref{https://www.gnu.org/software/repo-criteria-evaluation.html#GitHub, +is not the most ethical or freedom-preserving way to host software +projects}. Therefore the GitHub project may be +@uref{https://github.com/aspiers/stow/issues/43, moved to a more ethical +hosting service} in the future. + +Before reporting a bug, it is recommended to check whether it is already +known, so please first @pxref{Known Bugs}. + +When reporting a new bug, please include: + +@itemize @bullet +@item +the version number of Stow (@samp{stow --version}); + +@item +the version number of Perl (@samp{perl -v}); + +@item +the system information, which can often be obtained with @samp{uname +-a}; + +@item +a description of the bug; + +@item +the precise command you gave; + +@item +the output from the command (preferably verbose output, obtained by +adding @samp{--verbose=5} to the Stow command line). +@end itemize + +If you are really keen, consider developing a minimal test case and +creating a new test. See the @file{t/} directory in the source for lots +of examples, and the @file{CONTRIBUTING.md} file for a guide on how to +contribute. + +Before reporting a bug, please read the manual carefully, especially +@ref{Known Bugs}, to see whether you're encountering +something that doesn't need reporting. +(@pxref{Conflicts}). + +@c =========================================================================== +@node Known Bugs, GNU General Public License, Reporting Bugs, Top +@chapter Known Bugs + +Known bugs can be found in the following locations: + +@itemize +@item +@uref{https://github.com/aspiers/stow/issues/, the GitHub issue tracker} + +@item +@uref{https://savannah.gnu.org/bugs/?group=stow, the Savannah bug +tracker} + +@item +the @uref{https://lists.gnu.org/archive/html/bug-stow/, bug-stow list +archives} +@end itemize + +If you think you have found a new bug, please @pxref{Reporting Bugs}. + +@c =========================================================================== +@node GNU General Public License, Index, Known Bugs, Top +@unnumbered GNU General Public License + +@center Version 3, 29 June 2007 + +@c This file is intended to be included within another document, +@c hence no sectioning command or @node. + +@display +Copyright @copyright{} 2007 Free Software Foundation, Inc. @url{https://fsf.org/} + +Everyone is permitted to copy and distribute verbatim copies of this +license document, but changing it is not allowed. +@end display + +@heading Preamble + +The GNU General Public License is a free, copyleft license for +software and other kinds of works. + +The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If +the Program does not specify a version number of the GNU General +Public License, you may choose any version ever published by the Free +Software Foundation. + +If the Program specifies that a proxy can decide which future versions +of the GNU General Public License can be used, that proxy's public +statement of acceptance of a version permanently authorizes you to +choose that version for the Program. + +Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + +@item Disclaimer of Warranty. + +THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW@. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS'' WITHOUT +WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE@. THE ENTIRE RISK AS TO THE QUALITY AND +PERFORMANCE OF THE PROGRAM IS WITH YOU@. SHOULD THE PROGRAM PROVE +DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR +CORRECTION. + +@item Limitation of Liability. + +IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR +CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES +ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT +NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR +LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM +TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER +PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + +@item Interpretation of Sections 15 and 16. + +If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + +@end enumerate + +@heading END OF TERMS AND CONDITIONS + +@heading How to Apply These Terms to Your New Programs + +If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these +terms. + +To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the ``copyright'' line and a pointer to where the full notice is found. + +@smallexample +@var{one line to give the program's name and a brief idea of what it does.} +Copyright (C) @var{year} @var{name of author} + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or (at +your option) any later version. + +This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE@. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see @url{https://www.gnu.org/licenses/}. +@end smallexample + +Also add information on how to contact you by electronic and paper mail. + +If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + +@smallexample +@var{program} Copyright (C) @var{year} @var{name of author} +This program comes with ABSOLUTELY NO WARRANTY; for details type @samp{show w}. +This is free software, and you are welcome to redistribute it +under certain conditions; type @samp{show c} for details. +@end smallexample + +The hypothetical commands @samp{show w} and @samp{show c} should show +the appropriate parts of the General Public License. Of course, your +program's commands might be different; for a GUI interface, you would +use an ``about box''. + +You should also get your employer (if you work as a programmer) or school, +if any, to sign a ``copyright disclaimer'' for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +@url{https://www.gnu.org/licenses/}. + +The GNU General Public License does not permit incorporating your +program into proprietary programs. If your program is a subroutine +library, you may consider it more useful to permit linking proprietary +applications with the library. If this is what you want to do, use +the GNU Lesser General Public License instead of this License. But +first, please read @url{https://www.gnu.org/licenses/why-not-lgpl.html}. + +@node Index, , GNU General Public License, Top +@unnumbered Index + +@printindex cp + +@bye diff --git a/docker/Dockerfile b/docker/Dockerfile new file mode 100644 index 0000000..80ed7f3 --- /dev/null +++ b/docker/Dockerfile @@ -0,0 +1,62 @@ +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# Build docker image: `docker build -t stowtest` +# Run tests: (from stow src directory) +# `docker run --rm -it -v $(pwd):$(pwd) -w $(pwd) stowtest` +FROM debian:bookworm +RUN DEBIAN_FRONTEND=noninteractive apt-get update -qq +RUN DEBIAN_FRONTEND=noninteractive \ +apt-get install -y -q \ + autoconf \ + bzip2 \ + cpanminus \ + gawk \ + git \ + libssl-dev \ + make \ + patch \ + perlbrew \ + texinfo \ + texlive \ + texi2html \ +&& apt-get clean \ +&& rm -rf /var/lib/apt/lists/* + +# Set up perlbrew +ENV HOME=/root \ + PERLBREW_ROOT=/usr/local/perlbrew \ + PERLBREW_HOME=/root/.perlbrew \ + PERLBREW_PATH=/usr/local/perlbrew/bin +RUN mkdir -p /usr/local/perlbrew /root \ + && perlbrew init \ + && perlbrew install-cpanm \ + && perlbrew install-patchperl +RUN perlbrew install-multiple -j 4 --notest \ + perl-5.22.2 \ + perl-5.20.3 \ + perl-5.18.4 \ + perl-5.16.3 \ + perl-5.14.4 \ +&& perlbrew clean + +# Bootstrap the perl environments +COPY ./bootstrap-perls.sh /bootstrap-perls.sh +RUN /bootstrap-perls.sh && rm /bootstrap-perls.sh + +# Add test script to container filesystem +COPY ./run-stow-tests.sh /run-stow-tests.sh + +ENTRYPOINT ["/run-stow-tests.sh"] diff --git a/docker/bootstrap-perls.sh b/docker/bootstrap-perls.sh new file mode 100755 index 0000000..2efdd5e --- /dev/null +++ b/docker/bootstrap-perls.sh @@ -0,0 +1,30 @@ +#!/bin/bash +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# Load perlbrew environment +. /usr/local/perlbrew/etc/bashrc + +# For each perl version installed. +for p_version in $(perlbrew list | sed 's/ //g'); do + # Switch to it. + perlbrew use $p_version + # and install the needed modules. + /usr/local/perlbrew/bin/cpanm -n Devel::Cover::Report::Coveralls Test::More Test::Output +done + +# Cleanup to remove any temp files. +perlbrew clean diff --git a/docker/run-stow-tests.sh b/docker/run-stow-tests.sh new file mode 100755 index 0000000..121542c --- /dev/null +++ b/docker/run-stow-tests.sh @@ -0,0 +1,73 @@ +#!/bin/bash +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# Load perlbrew environment +# Load before setting safety to keep +# perlbrew scripts from breaking due to +# unset variables. +. /usr/local/perlbrew/etc/bashrc + +# Standard safety protocol +set -ef -o pipefail +IFS=$'\n\t' + +test_perl_version () { + perl_version="$1" + perlbrew use $perl_version + + echo $(perl --version) + + # Install stow + autoreconf --install + eval `perl -V:siteprefix` + ./configure --prefix=$siteprefix && make + make cpanm + + # Run tests + make distcheck + perl Build.PL && ./Build build && cover -test + ./Build distcheck +} + +if [[ -n "$LIST_PERL_VERSIONS" ]]; then + echo "Listing Perl versions available from perlbrew ..." + perlbrew list +elif [[ -z "$PERL_VERSION" ]]; then + echo "Testing all versions ..." + for perl_version in $(perlbrew list | sed 's/ //g'); do + test_perl_version $perl_version + done + make distclean +else + echo "Testing with Perl $PERL_VERSION" + # Test a specific version requested via $PERL_VERSION environment + # variable. Make sure set -e doesn't cause us to bail on failure + # before we start an interactive shell. + test_perl_version $PERL_VERSION || : + # N.B. Don't distclean since we probably want to debug this Perl + # version interactively. + cat <&2 - exit 1;; - esac - continue;; - - -o) chowncmd="$chownprog $2" - shift - shift - continue;; - - -s) stripcmd=$stripprog - shift - continue;; - - -t) dstarg=$2 - shift - shift - continue;; - - -T) no_target_directory=true - shift - continue;; - - --version) echo "$0 $scriptversion"; exit $?;; - - --) shift - break;; - - -*) echo "$0: invalid option: $1" >&2 - exit 1;; - - *) break;; - esac -done - -if test $# -ne 0 && test -z "$dir_arg$dstarg"; then - # When -d is used, all remaining arguments are directories to create. - # When -t is used, the destination is already specified. - # Otherwise, the last argument is the destination. Remove it from $@. - for arg - do - if test -n "$dstarg"; then - # $@ is not empty: it contains at least $arg. - set fnord "$@" "$dstarg" - shift # fnord - fi - shift # arg - dstarg=$arg - done -fi - -if test $# -eq 0; then - if test -z "$dir_arg"; then - echo "$0: no input file specified." >&2 - exit 1 - fi - # It's OK to call `install-sh -d' without argument. - # This can happen when creating conditional directories. - exit 0 -fi - -if test -z "$dir_arg"; then - trap '(exit $?); exit' 1 2 13 15 - - # Set umask so as not to create temps with too-generous modes. - # However, 'strip' requires both read and write access to temps. - case $mode in - # Optimize common cases. - *644) cp_umask=133;; - *755) cp_umask=22;; - - *[0-7]) - if test -z "$stripcmd"; then - u_plus_rw= - else - u_plus_rw='% 200' - fi - cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;; - *) - if test -z "$stripcmd"; then - u_plus_rw= - else - u_plus_rw=,u+rw - fi - cp_umask=$mode$u_plus_rw;; - esac -fi - -for src -do - # Protect names starting with `-'. - case $src in - -*) src=./$src ;; - esac - - if test -n "$dir_arg"; then - dst=$src - dstdir=$dst - test -d "$dstdir" - dstdir_status=$? - else - - # Waiting for this to be detected by the "$cpprog $src $dsttmp" command - # might cause directories to be created, which would be especially bad - # if $src (and thus $dsttmp) contains '*'. - if test ! -f "$src" && test ! -d "$src"; then - echo "$0: $src does not exist." >&2 - exit 1 - fi - - if test -z "$dstarg"; then - echo "$0: no destination specified." >&2 - exit 1 - fi - - dst=$dstarg - # Protect names starting with `-'. - case $dst in - -*) dst=./$dst ;; - esac - - # If destination is a directory, append the input filename; won't work - # if double slashes aren't ignored. - if test -d "$dst"; then - if test -n "$no_target_directory"; then - echo "$0: $dstarg: Is a directory" >&2 - exit 1 - fi - dstdir=$dst - dst=$dstdir/`basename "$src"` - dstdir_status=0 - else - # Prefer dirname, but fall back on a substitute if dirname fails. - dstdir=` - (dirname "$dst") 2>/dev/null || - expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ - X"$dst" : 'X\(//\)[^/]' \| \ - X"$dst" : 'X\(//\)$' \| \ - X"$dst" : 'X\(/\)' \| . 2>/dev/null || - echo X"$dst" | - sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ - s//\1/ - q - } - /^X\(\/\/\)[^/].*/{ - s//\1/ - q - } - /^X\(\/\/\)$/{ - s//\1/ - q - } - /^X\(\/\).*/{ - s//\1/ - q - } - s/.*/./; q' - ` - - test -d "$dstdir" - dstdir_status=$? - fi - fi - - obsolete_mkdir_used=false - - if test $dstdir_status != 0; then - case $posix_mkdir in - '') - # Create intermediate dirs using mode 755 as modified by the umask. - # This is like FreeBSD 'install' as of 1997-10-28. - umask=`umask` - case $stripcmd.$umask in - # Optimize common cases. - *[2367][2367]) mkdir_umask=$umask;; - .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;; - - *[0-7]) - mkdir_umask=`expr $umask + 22 \ - - $umask % 100 % 40 + $umask % 20 \ - - $umask % 10 % 4 + $umask % 2 - `;; - *) mkdir_umask=$umask,go-w;; - esac - - # With -d, create the new directory with the user-specified mode. - # Otherwise, rely on $mkdir_umask. - if test -n "$dir_arg"; then - mkdir_mode=-m$mode - else - mkdir_mode= - fi - - posix_mkdir=false - case $umask in - *[123567][0-7][0-7]) - # POSIX mkdir -p sets u+wx bits regardless of umask, which - # is incompatible with FreeBSD 'install' when (umask & 300) != 0. - ;; - *) - tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ - trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0 - - if (umask $mkdir_umask && - exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1 - then - if test -z "$dir_arg" || { - # Check for POSIX incompatibilities with -m. - # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or - # other-writeable bit of parent directory when it shouldn't. - # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. - ls_ld_tmpdir=`ls -ld "$tmpdir"` - case $ls_ld_tmpdir in - d????-?r-*) different_mode=700;; - d????-?--*) different_mode=755;; - *) false;; - esac && - $mkdirprog -m$different_mode -p -- "$tmpdir" && { - ls_ld_tmpdir_1=`ls -ld "$tmpdir"` - test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" - } - } - then posix_mkdir=: - fi - rmdir "$tmpdir/d" "$tmpdir" - else - # Remove any dirs left behind by ancient mkdir implementations. - rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null - fi - trap '' 0;; - esac;; - esac - - if - $posix_mkdir && ( - umask $mkdir_umask && - $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir" - ) - then : - else - - # The umask is ridiculous, or mkdir does not conform to POSIX, - # or it failed possibly due to a race condition. Create the - # directory the slow way, step by step, checking for races as we go. - - case $dstdir in - /*) prefix=/ ;; - -*) prefix=./ ;; - *) prefix= ;; - esac - - case $posix_glob in - '') - if (set -f) 2>/dev/null; then - posix_glob=true - else - posix_glob=false - fi ;; - esac - - oIFS=$IFS - IFS=/ - $posix_glob && set -f - set fnord $dstdir - shift - $posix_glob && set +f - IFS=$oIFS - - prefixes= - - for d - do - test -z "$d" && continue - - prefix=$prefix$d - if test -d "$prefix"; then - prefixes= - else - if $posix_mkdir; then - (umask=$mkdir_umask && - $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break - # Don't fail if two instances are running concurrently. - test -d "$prefix" || exit 1 - else - case $prefix in - *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;; - *) qprefix=$prefix;; - esac - prefixes="$prefixes '$qprefix'" - fi - fi - prefix=$prefix/ - done - - if test -n "$prefixes"; then - # Don't fail if two instances are running concurrently. - (umask $mkdir_umask && - eval "\$doit_exec \$mkdirprog $prefixes") || - test -d "$dstdir" || exit 1 - obsolete_mkdir_used=true - fi - fi - fi - - if test -n "$dir_arg"; then - { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && - { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && - { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || - test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 - else - - # Make a couple of temp file names in the proper directory. - dsttmp=$dstdir/_inst.$$_ - rmtmp=$dstdir/_rm.$$_ - - # Trap to clean up those temp files at exit. - trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 - - # Copy the file name to the temp name. - (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") && - - # and set any options; do chmod last to preserve setuid bits. - # - # If any of these fail, we abort the whole thing. If we want to - # ignore errors from any of these, just make sure not to ignore - # errors from the above "$doit $cpprog $src $dsttmp" command. - # - { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \ - && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \ - && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \ - && { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && - - # Now rename the file to the real destination. - { $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null \ - || { - # The rename failed, perhaps because mv can't rename something else - # to itself, or perhaps because mv is so ancient that it does not - # support -f. - - # Now remove or move aside any old file at destination location. - # We try this two ways since rm can't unlink itself on some - # systems and the destination file might be busy for other - # reasons. In this case, the final cleanup might fail but the new - # file should still install successfully. - { - if test -f "$dst"; then - $doit $rmcmd -f "$dst" 2>/dev/null \ - || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null \ - && { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }; }\ - || { - echo "$0: cannot unlink or rename $dst" >&2 - (exit 1); exit 1 - } - else - : - fi - } && - - # Now rename the file to the real destination. - $doit $mvcmd "$dsttmp" "$dst" - } - } || exit 1 - - trap '' 0 - fi -done - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "scriptversion=" -# time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-end: "$" -# End: diff --git a/lib/Stow.pm.in b/lib/Stow.pm.in new file mode 100755 index 0000000..b9b3b30 --- /dev/null +++ b/lib/Stow.pm.in @@ -0,0 +1,2506 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +package Stow; + +=head1 NAME + +Stow - manage farms of symbolic links + +=head1 SYNOPSIS + + my $stow = new Stow(%$options); + + $stow->plan_unstow(@pkgs_to_unstow); + $stow->plan_stow (@pkgs_to_stow); + + my %conflicts = $stow->get_conflicts; + $stow->process_tasks() unless %conflicts; + +=head1 DESCRIPTION + +This is the backend Perl module for GNU Stow, a program for managing +the installation of software packages, keeping them separate +(C vs. C, for example) +while making them appear to be installed in the same place +(C). + +Stow doesn't store an extra state between runs, so there's no danger +of mangling directories when file hierarchies don't match the +database. Also, stow will never delete any files, directories, or +links that appear in a stow directory, so it is always possible to +rebuild the target tree. + +=cut + +use strict; +use warnings; + +use Carp qw(carp cluck croak confess longmess); +use File::Copy qw(move); +use File::Spec; +use POSIX qw(getcwd); + +use Stow::Util qw(set_debug_level debug error set_test_mode + join_paths restore_cwd canon_path parent + adjust_dotfile unadjust_dotfile); + +our $ProgramName = 'stow'; +our $VERSION = '@VERSION@'; + +our $LOCAL_IGNORE_FILE = '.stow-local-ignore'; +our $GLOBAL_IGNORE_FILE = '.stow-global-ignore'; + +our @default_global_ignore_regexps = + __PACKAGE__->get_default_global_ignore_regexps(); + +# These are the default options for each Stow instance. +our %DEFAULT_OPTIONS = ( + conflicts => 0, + simulate => 0, + verbose => 0, + paranoid => 0, + compat => 0, + test_mode => 0, + dotfiles => 0, + adopt => 0, + 'no-folding' => 0, + ignore => [], + override => [], + defer => [], +); + +=head1 CONSTRUCTORS + +=head2 new(%options) + +=head3 Required options + +=over 4 + +=item * dir - the stow directory + +=item * target - the target directory + +=back + +=head3 Non-mandatory options + +See the documentation for the F CLI front-end for information on these. + +=over 4 + +=item * conflicts + +=item * simulate + +=item * verbose + +=item * paranoid + +=item * compat + +=item * test_mode + +=item * adopt + +=item * no-folding + +=item * ignore + +=item * override + +=item * defer + +=back + +N.B. This sets the current working directory to the target directory. + +=cut + +sub new { + my $self = shift; + my $class = ref($self) || $self; + my %opts = @_; + + my $new = bless { }, $class; + + $new->{action_count} = 0; + + for my $required_arg (qw(dir target)) { + croak "$class->new() called without '$required_arg' parameter\n" + unless exists $opts{$required_arg}; + $new->{$required_arg} = delete $opts{$required_arg}; + } + + for my $opt (keys %DEFAULT_OPTIONS) { + $new->{$opt} = exists $opts{$opt} ? delete $opts{$opt} + : $DEFAULT_OPTIONS{$opt}; + } + + if (%opts) { + croak "$class->new() called with unrecognised parameter(s): ", + join(", ", keys %opts), "\n"; + } + + set_debug_level($new->get_verbosity()); + set_test_mode($new->{test_mode}); + $new->set_stow_dir(); + $new->init_state(); + + return $new; +} + +sub get_verbosity { + my $self = shift; + + return $self->{verbose} unless $self->{test_mode}; + + return 0 unless exists $ENV{TEST_VERBOSE}; + return 0 unless length $ENV{TEST_VERBOSE}; + + # Convert TEST_VERBOSE=y into numeric value + $ENV{TEST_VERBOSE} = 3 if $ENV{TEST_VERBOSE} !~ /^\d+$/; + + return $ENV{TEST_VERBOSE}; +} + +=head2 set_stow_dir([$dir]) + +Sets a new stow directory. This allows the use of multiple stow +directories within one Stow instance, e.g. + + $stow->plan_stow('foo'); + $stow->set_stow_dir('/different/stow/dir'); + $stow->plan_stow('bar'); + $stow->process_tasks; + +If C<$dir> is omitted, uses the value of the C parameter passed +to the L constructor. + +=cut + +sub set_stow_dir { + my $self = shift; + my ($dir) = @_; + if (defined $dir) { + $self->{dir} = $dir; + } + + my $stow_dir = canon_path($self->{dir}); + my $target = canon_path($self->{target}); + + # Calculate relative path from target directory to stow directory. + # This will be commonly used as a prefix for constructing and + # recognising symlinks "installed" in the target directory which + # point to package files under the stow directory. + $self->{stow_path} = File::Spec->abs2rel($stow_dir, $target); + + debug(2, 0, "stow dir is $stow_dir"); + debug(2, 0, "stow dir path relative to target $target is $self->{stow_path}"); +} + +sub init_state { + my $self = shift; + + # Store conflicts during pre-processing + $self->{conflicts} = {}; + $self->{conflict_count} = 0; + + # Store command line packages to stow (-S and -R) + $self->{pkgs_to_stow} = []; + + # Store command line packages to unstow (-D and -R) + $self->{pkgs_to_delete} = []; + + # The following structures are used by the abstractions that allow us to + # defer operating on the filesystem until after all potential conflicts have + # been assessed. + + # $self->{tasks}: list of operations to be performed (in order) + # each element is a hash ref of the form + # { + # action => ... ('create' or 'remove' or 'move') + # type => ... ('link' or 'dir' or 'file') + # path => ... (unique) + # source => ... (only for links) + # dest => ... (only for moving files) + # } + $self->{tasks} = []; + + # $self->{dir_task_for}: map a path to the corresponding directory task reference + # This structure allows us to quickly determine if a path has an existing + # directory task associated with it. + $self->{dir_task_for} = {}; + + # $self->{link_task_for}: map a path to the corresponding directory task reference + # This structure allows us to quickly determine if a path has an existing + # directory task associated with it. + $self->{link_task_for} = {}; + + # N.B.: directory tasks and link tasks are NOT mutually exclusive due + # to tree splitting (which involves a remove link task followed by + # a create directory task). +} + +=head1 METHODS + +=head2 plan_unstow(@packages) + +Plan which symlink/directory creation/removal tasks need to be executed +in order to unstow the given packages. Any potential conflicts are then +accessible via L. + +=cut + +sub plan_unstow { + my $self = shift; + my @packages = @_; + + return unless @packages; + + debug(2, 0, "Planning unstow of: @packages ..."); + + $self->within_target_do(sub { + for my $package (@packages) { + my $pkg_path = join_paths($self->{stow_path}, $package); + if (not -d $pkg_path) { + error("The stow directory $self->{stow_path} does not contain package $package"); + } + debug(2, 0, "Planning unstow of package $package..."); + $self->unstow_contents( + $package, + '.', + '.', + ); + debug(2, 0, "Planning unstow of package $package... done"); + $self->{action_count}++; + } + }); +} + +=head2 plan_stow(@packages) + +Plan which symlink/directory creation/removal tasks need to be executed +in order to stow the given packages. Any potential conflicts are then +accessible via L. + +=cut + +sub plan_stow { + my $self = shift; + my @packages = @_; + + return unless @packages; + + debug(2, 0, "Planning stow of: @packages ..."); + + $self->within_target_do(sub { + for my $package (@packages) { + my $pkg_path = join_paths($self->{stow_path}, $package); + if (not -d $pkg_path) { + error("The stow directory $self->{stow_path} does not contain package $package"); + } + debug(2, 0, "Planning stow of package $package..."); + $self->stow_contents( + $self->{stow_path}, + $package, + '.', + '.', + ); + debug(2, 0, "Planning stow of package $package... done"); + $self->{action_count}++; + } + }); +} + +=head2 within_target_do($code) + +Execute code within target directory, preserving cwd. + +=over 4 + +=item $code + +Anonymous subroutine to execute within target dir. + +=back + +This is done to ensure that the consumer of the Stow interface doesn't +have to worry about (a) what their cwd is, and (b) that their cwd +might change. + +=cut + +sub within_target_do { + my $self = shift; + my ($code) = @_; + + my $cwd = getcwd(); + chdir($self->{target}) + or error("Cannot chdir to target tree: $self->{target} ($!)"); + debug(3, 0, "cwd now $self->{target}"); + + $self->$code(); + + restore_cwd($cwd); + debug(3, 0, "cwd restored to $cwd"); +} + +=head2 stow_contents($stow_path, $package, $pkg_subdir, $target_subdir) + +Stow the contents of the given directory. + +=over 4 + +=item $stow_path + +Relative path from current (i.e. target) directory to the stow dir +containing the package to be stowed. This can differ from +C<$self->{stow_path}> when unfolding a (sub)tree which is already +stowed from a package in a different stow directory (see the "Multiple +Stow Directories" section of the manual). + +=item $package + +The package whose contents are being stowed. + +=item $pkg_subdir + +Subdirectory of the installation image in the package directory which +needs stowing as a symlink which points to it. This is relative to +the top-level package directory. + +=item $target_subdir + +Subdirectory of the target directory which either needs a symlink to the +corresponding package subdirectory in the installation image, or if +it's an existing directory, it's an unfolded tree which may need to +be folded or recursed into. + +=back + +C and C are mutually recursive. + +=cut + +sub stow_contents { + my $self = shift; + my ($stow_path, $package, $pkg_subdir, $target_subdir) = @_; + + return if $self->should_skip_target($pkg_subdir); + + my $cwd = getcwd(); + my $msg = "Stowing contents of $stow_path / $package / $pkg_subdir (cwd=$cwd)"; + $msg =~ s!$ENV{HOME}(/|$)!~$1!g; + debug(3, 0, $msg); + debug(4, 1, "target subdir is $target_subdir"); + + # Calculate the path to the package directory or sub-directory + # whose contents need to be stowed, relative to the current + # (target directory). This is needed so that we can check it's a + # valid directory, and can read its contents to iterate over them. + my $pkg_path_from_cwd = join_paths($stow_path, $package, $pkg_subdir); + + error("stow_contents() called with non-directory target: $target_subdir") + unless $self->is_a_node($target_subdir); + + opendir my $DIR, $pkg_path_from_cwd + or error("cannot read directory: $pkg_path_from_cwd ($!)"); + my @listing = readdir $DIR; + closedir $DIR; + + NODE: + for my $node (sort @listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + + my $package_node_path = join_paths($pkg_subdir, $node); + my $target_node = $node; + + if ($self->{dotfiles}) { + my $adjusted = adjust_dotfile($node); + if ($adjusted ne $node) { + debug(4, 1, "Adjusting: $node => $adjusted"); + $target_node = $adjusted; + } + } + my $target_node_path = join_paths($target_subdir, $target_node); + + next NODE if $self->ignore($stow_path, $package, $target_node_path); + + $self->stow_node( + $stow_path, + $package, + $package_node_path, + $target_node_path + ); + } +} + +=head2 stow_node($stow_path, $package, $pkg_subpath, $target_subpath) + +Stow the given node + +=over 4 + +=item $stow_path + +Relative path from current (i.e. target) directory to the stow dir +containing the node to be stowed. This can differ from +C<$self->{stow_path}> when unfolding a (sub)tree which is already +stowed from a package in a different stow directory (see the "Multiple +Stow Directories" section of the manual). + +=item $package + +The package containing the node being stowed. + +=item $pkg_subpath + +Subpath of the installation image in the package directory which needs +stowing as a symlink which points to it. This is relative to the +top-level package directory. + +=item $target_subpath + +Subpath of the target directory which either needs a symlink to the +corresponding package subpathectory in the installation image, or if +it's an existing directory, it's an unfolded tree which may need to +be folded or recursed into. + +=back + +C and C are mutually recursive. + +=cut + +sub stow_node { + my $self = shift; + my ($stow_path, $package, $pkg_subpath, $target_subpath) = @_; + + debug(3, 0, "Stowing entry $stow_path / $package / $pkg_subpath"); + # Calculate the path to the package directory or sub-directory + # whose contents need to be stowed, relative to the current + # (target directory). This is needed so that we can check it's a + # valid directory, and can read its contents to iterate over them. + my $pkg_path_from_cwd = join_paths($stow_path, $package, $pkg_subpath); + + # Don't try to stow absolute symlinks (they can't be unstowed) + if (-l $pkg_path_from_cwd) { + my $link_dest = $self->read_a_link($pkg_path_from_cwd); + if ($link_dest =~ m{\A/}) { + $self->conflict( + 'stow', + $package, + "source is an absolute symlink $pkg_path_from_cwd => $link_dest" + ); + debug(3, 0, "Absolute symlinks cannot be unstowed"); + return; + } + } + + # How many directories deep are we? + my $level = ($pkg_subpath =~ tr,/,,); + debug(2, 1, "level of $pkg_subpath is $level"); + + # Calculate the destination of the symlink which would need to be + # installed within this directory in the absence of folding. This + # is relative to the target (sub-)directory where the symlink will + # be installed when the plans are executed, so as we descend down + # into the package hierarchy, it will have extra "../" segments + # prefixed to it. + my $link_dest = join_paths('../' x $level, $pkg_path_from_cwd); + debug(4, 1, "link destination $link_dest"); + + # Does the target already exist? + if ($self->is_a_link($target_subpath)) { + # Where is the link pointing? + my $existing_link_dest = $self->read_a_link($target_subpath); + if (not $existing_link_dest) { + error("Could not read link: $target_subpath"); + } + debug(4, 1, "Evaluate existing link: $target_subpath => $existing_link_dest"); + + # Does it point to a node under any stow directory? + my ($existing_pkg_path_from_cwd, $existing_stow_path, $existing_package) = + $self->find_stowed_path($target_subpath, $existing_link_dest); + if (not $existing_pkg_path_from_cwd) { + $self->conflict( + 'stow', + $package, + "existing target is not owned by stow: $target_subpath" + ); + return; + } + + # Does the existing $target_subpath actually point to anything? + if ($self->is_a_node($existing_pkg_path_from_cwd)) { + if ($existing_link_dest eq $link_dest) { + debug(2, 0, "--- Skipping $target_subpath as it already points to $link_dest"); + } + elsif ($self->defer($target_subpath)) { + debug(2, 0, "--- Deferring installation of: $target_subpath"); + } + elsif ($self->override($target_subpath)) { + debug(2, 0, "--- Overriding installation of: $target_subpath"); + $self->do_unlink($target_subpath); + $self->do_link($link_dest, $target_subpath); + } + elsif ($self->is_a_dir(join_paths(parent($target_subpath), $existing_link_dest)) && + $self->is_a_dir(join_paths(parent($target_subpath), $link_dest))) + { + + # If the existing link points to a directory, + # and the proposed new link points to a directory, + # then we can unfold (split open) the tree at that point + + debug(2, 0, "--- Unfolding $target_subpath which was already owned by $existing_package"); + $self->do_unlink($target_subpath); + $self->do_mkdir($target_subpath); + $self->stow_contents( + $existing_stow_path, + $existing_package, + $pkg_subpath, + $target_subpath, + ); + $self->stow_contents( + $self->{stow_path}, + $package, + $pkg_subpath, + $target_subpath, + ); + } + else { + $self->conflict( + 'stow', + $package, + "existing target is stowed to a different package: " + . "$target_subpath => $existing_link_dest" + ); + } + } + else { + # The existing link is invalid, so replace it with a good link + debug(2, 0, "--- replacing invalid link: $target_subpath"); + $self->do_unlink($target_subpath); + $self->do_link($link_dest, $target_subpath); + } + } + elsif ($self->is_a_node($target_subpath)) { + debug(4, 1, "Evaluate existing node: $target_subpath"); + if ($self->is_a_dir($target_subpath)) { + if (! -d $pkg_path_from_cwd) { + # FIXME: why wasn't this ever needed before? + $self->conflict( + 'stow', + $package, + "cannot stow non-directory $pkg_path_from_cwd over existing directory target $target_subpath" + ); + } + else { + $self->stow_contents( + $self->{stow_path}, + $package, + $pkg_subpath, + $target_subpath, + ); + } + } + else { + # If we're here, $target_subpath is not a current or + # planned directory. + + if ($self->{adopt}) { + if (-d $pkg_path_from_cwd) { + $self->conflict( + 'stow', + $package, + "cannot stow directory $pkg_path_from_cwd over existing non-directory target $target_subpath" + ); + } + else { + $self->do_mv($target_subpath, $pkg_path_from_cwd); + $self->do_link($link_dest, $target_subpath); + } + } + else { + $self->conflict( + 'stow', + $package, + "cannot stow $pkg_path_from_cwd over existing target $target_subpath since neither a link nor a directory and --adopt not specified" + ); + } + } + } + elsif ($self->{'no-folding'} && -d $pkg_path_from_cwd && ! -l $pkg_path_from_cwd) { + $self->do_mkdir($target_subpath); + $self->stow_contents( + $self->{stow_path}, + $package, + $pkg_subpath, + $target_subpath, + ); + } + else { + $self->do_link($link_dest, $target_subpath); + } + return; +} + +=head2 should_skip_target($target_subdir) + +Determine whether C<$target_subdir> is a stow directory which should +not be stowed to or unstowed from. This mechanism protects stow +directories from being altered by stow, and is a necessary safety +check because the stow directory could live beneath the target +directory. + +=over 4 + +=item $target_subdir => relative path to symlink target from the current directory + +=back + +Returns true iff target is a stow directory + +cwd must be the top-level target directory, otherwise +C won't work. + +=cut + +sub should_skip_target { + my $self = shift; + my ($target) = @_; + + # Don't try to remove anything under a stow directory + if ($target eq $self->{stow_path}) { + warn "WARNING: skipping target which was current stow directory $target\n"; + return 1; + } + + if ($self->marked_stow_dir($target)) { + warn "WARNING: skipping marked Stow directory $target\n"; + return 1; + } + + if (-e join_paths($target, ".nonstow")) { + warn "WARNING: skipping protected directory $target\n"; + return 1; + } + + debug(4, 1, "$target not protected; shouldn't skip"); + return 0; +} + +# cwd must be the top-level target directory, otherwise +# marked_stow_dir() won't work. +sub marked_stow_dir { + my $self = shift; + my ($dir) = @_; + if (-e join_paths($dir, ".stow")) { + debug(5, 5, "> $dir contained .stow"); + return 1; + } + return 0; +} + +=head2 unstow_contents($package, $pkg_subdir, $target_subdir) + +Unstow the contents of the given directory + +=over 4 + +=item $package + +The package whose contents are being unstowed. + +=item $pkg_subdir + +Subdirectory of the installation image in the package directory which +may need a symlink pointing to it to be unstowed. This is relative to +the top-level package directory. + +=item $target_subdir + +Subdirectory of the target directory which either needs unstowing of a +symlink to the corresponding package subdirectory in the installation +image, or if it's an existing directory, it's an unfolded tree which +may need to be recursed into. + +=back + +C and C are mutually recursive. +Here we traverse the package tree, rather than the target tree. + +=cut + +sub unstow_contents { + my $self = shift; + my ($package, $pkg_subdir, $target_subdir) = @_; + + return if $self->should_skip_target($target_subdir); + + my $cwd = getcwd(); + my $msg = "Unstowing contents of $self->{stow_path} / $package / $pkg_subdir (cwd=$cwd" . ($self->{compat} ? ', compat' : '') . ")"; + $msg =~ s!$ENV{HOME}/!~/!g; + debug(3, 0, $msg); + debug(4, 1, "target subdir is $target_subdir"); + + # Calculate the path to the package directory or sub-directory + # whose contents need to be unstowed, relative to the current + # (target directory). This is needed so that we can check it's a + # valid directory, and can read its contents to iterate over them. + my $pkg_path_from_cwd = join_paths($self->{stow_path}, $package, $pkg_subdir); + + if ($self->{compat}) { + # In compat mode we traverse the target tree not the source tree, + # so we're unstowing the contents of /target/foo, there's no + # guarantee that the corresponding /stow/mypkg/foo exists. + error("unstow_contents() in compat mode called with non-directory target: $target_subdir") + unless -d $target_subdir; + } + else { + # We traverse the package installation image tree not the + # target tree, so $pkg_path_from_cwd must exist. + error("unstow_contents() called with non-directory path: $pkg_path_from_cwd") + unless -d $pkg_path_from_cwd; + + # When called at the top level, $target_subdir should exist. And + # unstow_node() should only call this via mutual recursion if + # $target_subdir exists. + error("unstow_contents() called with invalid target: $target_subdir") + unless $self->is_a_node($target_subdir); + } + + my $dir = $self->{compat} ? $target_subdir : $pkg_path_from_cwd; + opendir my $DIR, $dir + or error("cannot read directory: $dir ($!)"); + my @listing = readdir $DIR; + closedir $DIR; + + NODE: + for my $node (sort @listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + + my $package_node = $node; + my $target_node = $node; + + if ($self->{dotfiles}) { + if ($self->{compat}) { + # $node is in the target tree, so we need to reverse + # adjust any .* files in case they came from a dot-* + # file. + my $adjusted = unadjust_dotfile($node); + if ($adjusted ne $node) { + debug(4, 1, "Reverse adjusting: $node => $adjusted"); + $package_node = $adjusted; + } + } + else { + # $node is in the package tree, so adjust any dot-* + # files for the target. + my $adjusted = adjust_dotfile($node); + if ($adjusted ne $node) { + debug(4, 1, "Adjusting: $node => $adjusted"); + $target_node = $adjusted; + } + } + } + my $package_node_path = join_paths($pkg_subdir, $package_node); + my $target_node_path = join_paths($target_subdir, $target_node); + + next NODE if $self->ignore($self->{stow_path}, $package, $target_node_path); + + $self->unstow_node( + $package, + $package_node_path, + $target_node_path + ); + } + + if (! $self->{compat} && -d $target_subdir) { + $self->cleanup_invalid_links($target_subdir); + } +} + +=head2 unstow_node($package, $pkg_subpath, $target_subpath) + +Unstow the given node. + +=over 4 + +=item $package + +The package containing the node being unstowed. + +=item $pkg_subpath + +Subpath of the installation image in the package directory which needs +stowing as a symlink which points to it. This is relative to the +top-level package directory. + +=item $target_subpath + +Subpath of the target directory which either needs a symlink to the +corresponding package subpathectory in the installation image, or if +it's an existing directory, it's an unfolded tree which may need to +be folded or recursed into. + +=back + +C and C are mutually recursive. + +=cut + +sub unstow_node { + my $self = shift; + my ($package, $pkg_subpath, $target_subpath) = @_; + + debug(3, 0, "Unstowing entry from target: $target_subpath"); + debug(4, 1, "Package entry: $self->{stow_path} / $package / $pkg_subpath"); + # Calculate the path to the package directory or sub-directory + # whose contents need to be unstowed, relative to the current + # (target directory). + # Does the target exist? + if ($self->is_a_link($target_subpath)) { + $self->unstow_link_node($package, $pkg_subpath, $target_subpath); + } + elsif (-d $target_subpath) { + $self->unstow_contents($package, $pkg_subpath, $target_subpath); + + # This action may have made the parent directory foldable + if (my $parent_in_pkg = $self->foldable($target_subpath)) { + $self->fold_tree($target_subpath, $parent_in_pkg); + } + } + elsif (-e $target_subpath) { + debug(2, 1, "$target_subpath doesn't need to be unstowed"); + } + else { + debug(2, 1, "$target_subpath did not exist to be unstowed"); + } +} + +sub unstow_link_node { + my $self = shift; + my ($package, $pkg_subpath, $target_subpath) = @_; + debug(4, 2, "Evaluate existing link: $target_subpath"); + + # Where is the link pointing? + my $link_dest = $self->read_a_link($target_subpath); + if (not $link_dest) { + error("Could not read link: $target_subpath"); + } + + if ($link_dest =~ m{\A/}) { + warn "Ignoring an absolute symlink: $target_subpath => $link_dest\n"; + return; + } + + # Does it point to a node under any stow directory? + my ($existing_pkg_path_from_cwd, $existing_stow_path, $existing_package) = + $self->find_stowed_path($target_subpath, $link_dest); + if (not $existing_pkg_path_from_cwd) { + # The user is unstowing the package, so they don't want links to it. + # Therefore we should allow them to have a link pointing elsewhere + # which would conflict with the package if they were stowing it. + debug(5, 3, "Ignoring unowned link $target_subpath => $link_dest"); + return; + } + + my $pkg_path_from_cwd = join_paths($self->{stow_path}, $package, $pkg_subpath); + + # Does the existing $target_subpath actually point to anything? + if (-e $existing_pkg_path_from_cwd) { + if ($existing_pkg_path_from_cwd eq $pkg_path_from_cwd) { + # It points to the package we're unstowing, so unstow the link. + $self->do_unlink($target_subpath); + } + else { + debug(5, 3, "Ignoring link $target_subpath => $link_dest"); + } + } + else { + debug(2, 0, "--- removing invalid link into a stow directory: $pkg_path_from_cwd"); + $self->do_unlink($target_subpath); + } +} + +=head2 link_owned_by_package($target_subpath, $link_dest) + +Determine whether the given link points to a member of a stowed +package. + +=over 4 + +=item $target_subpath + +Path to a symbolic link under current directory. + +=item $link_dest + +Where that link points to. + +=back + +Lossy wrapper around find_stowed_path(). + +Returns the package iff link is owned by stow, otherwise ''. + +=cut + +sub link_owned_by_package { + my $self = shift; + my ($target_subpath, $link_dest) = @_; + + my ($pkg_path_from_cwd, $stow_path, $package) = + $self->find_stowed_path($target_subpath, $link_dest); + return $package; +} + +=head2 find_stowed_path($target_subpath, $link_dest) + +Determine whether the given symlink within the target directory is a +stowed path pointing to a member of a package under the stow dir, and +if so, obtain a breakdown of information about this stowed path. + +=over 4 + +=item $target_subpath + +Path to a symbolic link somewhere under the target directory, relative +to the top-level target directory (which is also expected to be the +current directory). + +=item $link_dest + +Where that link points to (needed because link might not exist yet due +to two-phase approach, so we can't just call C). If this +is owned by Stow, it will be expressed relative to (the directory +containing) C<$target_subpath>. However if it's not, it could of course be +relative or absolute, point absolutely anywhere, and could even be +dangling. + +=back + +Returns C<($pkg_path_from_cwd, $stow_path, $package)> where +C<$pkg_path_from_cwd> and C<$stow_path> are relative from the +top-level target directory. C<$pkg_path_from_cwd> is the full +relative path to the member of the package pointed to by +C<$link_dest>; C<$stow_path> is the relative path to the stow +directory; and C<$package> is the name of the package; or C<('', '', +'')> if link is not owned by stow. + +cwd must be the top-level target directory, otherwise +C won't work. Allow for stow dir +not being under target dir. + +=cut + +sub find_stowed_path { + my $self = shift; + my ($target_subpath, $link_dest) = @_; + + if (substr($link_dest, 0, 1) eq '/') { + # Symlink points to an absolute path, therefore it cannot be + # owned by Stow. + return ('', '', ''); + } + + # Evaluate softlink relative to its target, without relying on + # what's actually on the filesystem, since the link might not + # exist yet. + debug(4, 2, "find_stowed_path(target=$target_subpath; source=$link_dest)"); + my $pkg_path_from_cwd = join_paths(parent($target_subpath), $link_dest); + debug(4, 3, "is symlink destination $pkg_path_from_cwd owned by stow?"); + + # First check whether the link is owned by the current stow + # directory, in which case $pkg_path_from_cwd will be a prefix of + # $self->{stow_path}. + my ($package, $pkg_subpath) = $self->link_dest_within_stow_dir($pkg_path_from_cwd); + if (length $package) { + debug(4, 3, "yes - package $package in $self->{stow_path} may contain $pkg_subpath"); + return ($pkg_path_from_cwd, $self->{stow_path}, $package); + } + + # If no .stow file was found, we need to find out whether it's + # owned by the current stow directory, in which case + # $pkg_path_from_cwd will be a prefix of $self->{stow_path}. + my ($stow_path, $ext_package) = $self->find_containing_marked_stow_dir($pkg_path_from_cwd); + if (length $stow_path) { + debug(5, 5, "yes - $stow_path in $pkg_path_from_cwd was marked as a stow dir; package=$ext_package"); + return ($pkg_path_from_cwd, $stow_path, $ext_package); + } + + return ('', '', ''); +} + +=head2 link_dest_within_stow_dir($link_dest) + +Detect whether symlink destination is within current stow dir + +=over 4 + +=item $link_dest - destination of the symlink relative + +=back + +Returns C<($package, $pkg_subpath)> - package within the current stow +dir and subpath within that package which the symlink points to. + +=cut + +sub link_dest_within_stow_dir { + my $self = shift; + my ($link_dest) = @_; + + debug(4, 4, "common prefix? link_dest=$link_dest; stow_path=$self->{stow_path}"); + + my $removed = $link_dest =~ s,^\Q$self->{stow_path}/,,; + if (! $removed) { + debug(4, 3, "no - $link_dest not under $self->{stow_path}"); + return ('', ''); + } + + debug(4, 4, "remaining after removing $self->{stow_path}: $link_dest"); + my @dirs = File::Spec->splitdir($link_dest); + my $package = shift @dirs; + my $pkg_subpath = File::Spec->catdir(@dirs); + return ($package, $pkg_subpath); +} + +=head2 find_containing_marked_stow_dir($pkg_path_from_cwd) + +Detect whether path is within a marked stow directory + +=over 4 + +=item $pkg_path_from_cwd => path to directory to check + +=back + +Returns C<($stow_path, $package)> where C<$stow_path> is the highest +directory (relative from the top-level target directory) which is +marked as a Stow directory, and C<$package> is the containing package; +or C<('', '')> if no containing directory is marked as a stow +directory. + +cwd must be the top-level target directory, otherwise +C won't work. + +=cut + +sub find_containing_marked_stow_dir { + my $self = shift; + my ($pkg_path_from_cwd) = @_; + + # Search for .stow files - this allows us to detect links + # owned by stow directories other than the current one. + my @segments = File::Spec->splitdir($pkg_path_from_cwd); + for my $last_segment (0 .. $#segments) { + my $pkg_path_from_cwd = join_paths(@segments[0 .. $last_segment]); + debug(5, 5, "is $pkg_path_from_cwd marked stow dir?"); + if ($self->marked_stow_dir($pkg_path_from_cwd)) { + if ($last_segment == $#segments) { + # This should probably never happen. Even if it did, + # there would be no way of calculating $package. + internal_error("find_stowed_path() called directly on stow dir"); + } + + my $package = $segments[$last_segment + 1]; + return ($pkg_path_from_cwd, $package); + } + } + return ('', ''); +} + +=head2 cleanup_invalid_links($dir) + +Clean up orphaned links that may block folding + +=over 4 + +=item $dir + +Path to directory to check + +=back + +This is invoked by C. We only clean up links which +are both orphaned and owned by Stow, i.e. they point to a non-existent +location within a Stow package. These can block tree folding, and +they can easily occur when a file in Stow package is renamed or +removed, so the benefit should outweigh the low risk of actually +someone wanting to keep an orphaned link to within a Stow package. + +=cut + +sub cleanup_invalid_links { + my $self = shift; + my ($dir) = @_; + + my $cwd = getcwd(); + debug(2, 0, "Cleaning up any invalid links in $dir (pwd=$cwd)"); + + if (not -d $dir) { + internal_error("cleanup_invalid_links() called with a non-directory: $dir"); + } + + opendir my $DIR, $dir + or error("cannot read directory: $dir ($!)"); + my @listing = readdir $DIR; + closedir $DIR; + + NODE: + for my $node (sort @listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + + my $node_path = join_paths($dir, $node); + + next unless -l $node_path; + + debug(4, 1, "Checking validity of link $node_path"); + + if (exists $self->{link_task_for}{$node_path}) { + my $action = $self->{link_task_for}{$node_path}{action}; + if ($action ne 'remove') { + warn "Unexpected action $action scheduled for $node_path; skipping clean-up\n"; + } + else { + debug(4, 2, "$node_path scheduled for removal; skipping clean-up"); + } + next; + } + + # Where is the link pointing? + # (don't use read_a_link() here) + my $link_dest = readlink($node_path); + if (not $link_dest) { + error("Could not read link $node_path"); + } + + my $target_subpath = join_paths($dir, $link_dest); + debug(4, 2, "join $dir $link_dest"); + if (-e $target_subpath) { + debug(4, 2, "Link target $link_dest exists at $target_subpath; skipping clean up"); + next; + } + else { + debug(4, 2, "Link target $link_dest doesn't exist at $target_subpath"); + } + + debug(3, 1, + "Checking whether valid link $node_path -> $link_dest is " . + "owned by stow"); + + my $owner = $self->link_owned_by_package($node_path, $link_dest); + if ($owner) { + # owned by stow + debug(2, 0, "--- removing link owned by $owner: $node_path => " . + join_paths($dir, $link_dest)); + $self->do_unlink($node_path); + } + } + return; +} + + +=head2 foldable($target_subdir) + +Determine whether a tree can be folded + +=over 4 + +=item $target_subdir + +Path to the target sub-directory to check for foldability, relative to +the current directory (the top-level target directory). + +=back + +Returns path to the parent dir iff the tree can be safely folded. The +path returned is relative to the parent of C<$target_subdir>, i.e. it +can be used as the source for a replacement symlink. + +=cut + +sub foldable { + my $self = shift; + my ($target_subdir) = @_; + + debug(3, 2, "Is $target_subdir foldable?"); + if ($self->{'no-folding'}) { + debug(3, 3, "Not foldable because --no-folding enabled"); + return ''; + } + + opendir my $DIR, $target_subdir + or error(qq{Cannot read directory "$target_subdir" ($!)\n}); + my @listing = readdir $DIR; + closedir $DIR; + + # We want to see if all the symlinks in $target_subdir point to + # files under the same parent subdirectory in the package + # (e.g. ../../stow/pkg1/common_dir/file1). So remember which + # parent subdirectory we've already seen, and if we come across a + # second one which is different, + # (e.g. ../../stow/pkg2/common_dir/file2), then $target_subdir + # common_dir which contains file{1,2} cannot be folded to be + # a symlink to (say) ../../stow/pkg1/common_dir. + my $parent_in_pkg = ''; + + NODE: + for my $node (sort @listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + + my $target_node_path = join_paths($target_subdir, $node); + + # Skip nodes scheduled for removal + next NODE if not $self->is_a_node($target_node_path); + + # If it's not a link then we can't fold its parent + if (not $self->is_a_link($target_node_path)) { + debug(3, 3, "Not foldable because $target_node_path not a link"); + return ''; + } + + # Where is the link pointing? + my $link_dest = $self->read_a_link($target_node_path); + if (not $link_dest) { + error("Could not read link $target_node_path"); + } + my $new_parent = parent($link_dest); + if ($parent_in_pkg eq '') { + $parent_in_pkg = $new_parent; + } + elsif ($parent_in_pkg ne $new_parent) { + debug(3, 3, "Not foldable because $target_subdir contains links to entries in both $parent_in_pkg and $new_parent"); + return ''; + } + } + if (not $parent_in_pkg) { + debug(3, 3, "Not foldable because $target_subdir contains no links"); + return ''; + } + + # If we get here then all nodes inside $target_subdir are links, + # and those links point to nodes inside the same directory. + + # chop of leading '..' to get the path to the common parent directory + # relative to the parent of our $target_subdir + $parent_in_pkg =~ s{\A\.\./}{}; + + # If the resulting path is owned by stow, we can fold it + if ($self->link_owned_by_package($target_subdir, $parent_in_pkg)) { + debug(3, 3, "$target_subdir is foldable"); + return $parent_in_pkg; + } + else { + debug(3, 3, "$target_subdir is not foldable"); + return ''; + } +} + +=head2 fold_tree($target_subdir, $pkg_subpath) + +Fold the given tree + +=over 4 + +=item $target_subdir + +Directory that we will replace with a link to $pkg_subpath. + +=item $pkg_subpath + +link to the folded tree source + +=back + +Only called iff foldable() is true so we can remove some checks. + +=cut + +sub fold_tree { + my $self = shift; + my ($target_subdir, $pkg_subpath) = @_; + + debug(3, 0, "--- Folding tree: $target_subdir => $pkg_subpath"); + + opendir my $DIR, $target_subdir + or error(qq{Cannot read directory "$target_subdir" ($!)\n}); + my @listing = readdir $DIR; + closedir $DIR; + + NODE: + for my $node (sort @listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + next NODE if not $self->is_a_node(join_paths($target_subdir, $node)); + $self->do_unlink(join_paths($target_subdir, $node)); + } + $self->do_rmdir($target_subdir); + $self->do_link($pkg_subpath, $target_subdir); + return; +} + + +=head2 conflict($package, $message) + +Handle conflicts in stow operations + +=over 4 + +=item $package + +the package involved with the conflicting operation + +=item $message + +a description of the conflict + +=back + +=cut + +sub conflict { + my $self = shift; + my ($action, $package, $message) = @_; + + debug(2, 0, "CONFLICT when ${action}ing $package: $message"); + $self->{conflicts}{$action}{$package} ||= []; + push @{ $self->{conflicts}{$action}{$package} }, $message; + $self->{conflict_count}++; + + return; +} + +=head2 get_conflicts() + +Returns a nested hash of all potential conflicts discovered: the keys +are actions ('stow' or 'unstow'), and the values are hashrefs whose +keys are stow package names and whose values are conflict +descriptions, e.g.: + + ( + stow => { + perl => [ + "existing target is not owned by stow: bin/a2p" + "existing target is neither a link nor a directory: bin/perl" + ] + } + ) + +=cut + +sub get_conflicts { + my $self = shift; + return %{ $self->{conflicts} }; +} + +=head2 get_conflict_count() + +Returns the number of conflicts found. + +=cut + +sub get_conflict_count { + my $self = shift; + return $self->{conflict_count}; +} + +=head2 get_tasks() + +Returns a list of all symlink/directory creation/removal tasks. + +=cut + +sub get_tasks { + my $self = shift; + return @{ $self->{tasks} }; +} + +=head2 get_action_count() + +Returns the number of actions planned for this Stow instance. + +=cut + +sub get_action_count { + my $self = shift; + return $self->{action_count}; +} + +=head2 ignore($stow_path, $package, $target) + +Determine if the given path matches a regex in our ignore list. + +=over 4 + +=item $stow_path + +the stow directory containing the package + +=item $package + +the package containing the path + +=item $target + +the path to check against the ignore list relative to its package +directory + +=back + +Returns true iff the path should be ignored. + +=cut + +sub ignore { + my $self = shift; + my ($stow_path, $package, $target) = @_; + + internal_error(__PACKAGE__ . "::ignore() called with empty target") + unless length $target; + + for my $suffix (@{ $self->{ignore} }) { + if ($target =~ m/$suffix/) { + debug(4, 1, "Ignoring path $target due to --ignore=$suffix"); + return 1; + } + } + + my $package_dir = join_paths($stow_path, $package); + my ($path_regexp, $segment_regexp) = + $self->get_ignore_regexps($package_dir); + debug(5, 2, "Ignore list regexp for paths: " . + (defined $path_regexp ? "/$path_regexp/" : "none")); + debug(5, 2, "Ignore list regexp for segments: " . + (defined $segment_regexp ? "/$segment_regexp/" : "none")); + + if (defined $path_regexp and "/$target" =~ $path_regexp) { + debug(4, 1, "Ignoring path /$target"); + return 1; + } + + (my $basename = $target) =~ s!.+/!!; + if (defined $segment_regexp and $basename =~ $segment_regexp) { + debug(4, 1, "Ignoring path segment $basename"); + return 1; + } + + debug(5, 1, "Not ignoring $target"); + return 0; +} + +sub get_ignore_regexps { + my $self = shift; + my ($dir) = @_; + + # N.B. the local and global stow ignore files have to have different + # names so that: + # 1. the global one can be a symlink to within a stow + # package, managed by stow itself, and + # 2. the local ones can be ignored via hardcoded logic in + # GlobsToRegexp(), so that they always stay within their stow packages. + + my $local_stow_ignore = join_paths($dir, $LOCAL_IGNORE_FILE); + my $global_stow_ignore = join_paths($ENV{HOME}, $GLOBAL_IGNORE_FILE); + + for my $file ($local_stow_ignore, $global_stow_ignore) { + if (-e $file) { + debug(5, 1, "Using ignore file: $file"); + return $self->get_ignore_regexps_from_file($file); + } + else { + debug(5, 1, "$file didn't exist"); + } + } + + debug(4, 1, "Using built-in ignore list"); + return @default_global_ignore_regexps; +} + +my %ignore_file_regexps; + +sub get_ignore_regexps_from_file { + my $self = shift; + my ($file) = @_; + + if (exists $ignore_file_regexps{$file}) { + debug(4, 2, "Using memoized regexps from $file"); + return @{ $ignore_file_regexps{$file} }; + } + + if (! open(REGEXPS, $file)) { + debug(4, 2, "Failed to open $file: $!"); + return undef; + } + + my @regexps = $self->get_ignore_regexps_from_fh(\*REGEXPS); + close(REGEXPS); + + $ignore_file_regexps{$file} = [ @regexps ]; + return @regexps; +} + +=head2 invalidate_memoized_regexp($file) + +For efficiency of performance, regular expressions are compiled from +each ignore list file the first time it is used by the Stow process, +and then memoized for future use. If you expect the contents of these +files to change during a single run, you will need to invalidate the +memoized value from this cache. This method allows you to do that. + +=cut + +sub invalidate_memoized_regexp { + my $self = shift; + my ($file) = @_; + if (exists $ignore_file_regexps{$file}) { + debug(4, 2, "Invalidated memoized regexp for $file"); + delete $ignore_file_regexps{$file}; + } + else { + debug(2, 1, "WARNING: no memoized regexp for $file to invalidate"); + } +} + +sub get_ignore_regexps_from_fh { + my $self = shift; + my ($fh) = @_; + my %regexps; + while (<$fh>) { + chomp; + s/^\s+//; + s/\s+$//; + next if /^#/ or length($_) == 0; + s/\s+#.+//; # strip comments to right of pattern + s/\\#/#/g; + $regexps{$_}++; + } + + # Local ignore lists should *always* stay within the stow directory, + # because this is the only place stow looks for them. + $regexps{"^/\Q$LOCAL_IGNORE_FILE\E\$"}++; + + return $self->compile_ignore_regexps(%regexps); +} + +sub compile_ignore_regexps { + my $self = shift; + my (%regexps) = @_; + + my @segment_regexps; + my @path_regexps; + for my $regexp (keys %regexps) { + if (index($regexp, '/') < 0) { + # No / found in regexp, so use it for matching against basename + push @segment_regexps, $regexp; + } + else { + # / found in regexp, so use it for matching against full path + push @path_regexps, $regexp; + } + } + + my $segment_regexp = join '|', @segment_regexps; + my $path_regexp = join '|', @path_regexps; + $segment_regexp = @segment_regexps ? + $self->compile_regexp("^($segment_regexp)\$") : undef; + $path_regexp = @path_regexps ? + $self->compile_regexp("(^|/)($path_regexp)(/|\$)") : undef; + + return ($path_regexp, $segment_regexp); +} + +sub compile_regexp { + my $self = shift; + my ($regexp) = @_; + my $compiled = eval { qr/$regexp/ }; + die "Failed to compile regexp: $@\n" if $@; + return $compiled; +} + +sub get_default_global_ignore_regexps { + my $class = shift; + # Bootstrap issue - first time we stow, we will be stowing + # .cvsignore so it might not exist in ~ yet, or if it does, it could + # be an old version missing the entries we need. So we make sure + # they are there by hardcoding some crucial entries. + return $class->get_ignore_regexps_from_fh(\*DATA); +} + +=head2 defer($path) + +Determine if the given path matches a regex in our C list + +=over 4 + +=item $path + +=back + +Returns boolean. + +=cut + +sub defer { + my $self = shift; + my ($path) = @_; + + for my $prefix (@{ $self->{defer} }) { + return 1 if $path =~ m/$prefix/; + } + return 0; +} + +=head2 override($path) + +Determine if the given path matches a regex in our C list + +=over 4 + +=item $path + +=back + +Returns boolean + +=cut + +sub override { + my $self = shift; + my ($path) = @_; + + for my $regex (@{ $self->{override} }) { + return 1 if $path =~ m/$regex/; + } + return 0; +} + +############################################################################## +# +# The following code provides the abstractions that allow us to defer operating +# on the filesystem until after all potential conflcits have been assessed. +# +############################################################################## + +=head2 process_tasks() + +Process each task in the tasks list + +=over 4 + +=item none + +=back + +Returns : n/a +Throws : fatal error if tasks list is corrupted or a task fails + +=cut + +sub process_tasks { + my $self = shift; + + debug(2, 0, "Processing tasks..."); + + # Strip out all tasks with a skip action + $self->{tasks} = [ grep { $_->{action} ne 'skip' } @{ $self->{tasks} } ]; + + if (not @{ $self->{tasks} }) { + return; + } + + $self->within_target_do(sub { + for my $task (@{ $self->{tasks} }) { + $self->process_task($task); + } + }); + + debug(2, 0, "Processing tasks... done"); +} + +=head2 process_task($task) + +Process a single task. + +=over 4 + +=item $task => the task to process + +=back + +Returns : n/a +Throws : fatal error if task fails +# # +Must run from within target directory. Task involve either creating +or deleting dirs and symlinks an action is set to 'skip' if it is +found to be redundant + +=cut + +sub process_task { + my $self = shift; + my ($task) = @_; + + if ($task->{action} eq 'create') { + if ($task->{type} eq 'dir') { + mkdir($task->{path}, 0777) + or error("Could not create directory: $task->{path} ($!)"); + return; + } + elsif ($task->{type} eq 'link') { + symlink $task->{source}, $task->{path} + or error( + "Could not create symlink: %s => %s ($!)", + $task->{path}, + $task->{source} + ); + return; + } + } + elsif ($task->{action} eq 'remove') { + if ($task->{type} eq 'dir') { + rmdir $task->{path} + or error("Could not remove directory: $task->{path} ($!)"); + return; + } + elsif ($task->{type} eq 'link') { + unlink $task->{path} + or error("Could not remove link: $task->{path} ($!)"); + return; + } + } + elsif ($task->{action} eq 'move') { + if ($task->{type} eq 'file') { + # rename() not good enough, since the stow directory + # might be on a different filesystem to the target. + move $task->{path}, $task->{dest} + or error("Could not move $task->{path} -> $task->{dest} ($!)"); + return; + } + } + + # Should never happen. + internal_error("bad task action: $task->{action}"); +} + +=head2 link_task_action($path) + +Finds the link task action for the given path, if there is one + +=over 4 + +=item $path + +=back + +Returns C<'remove'>, C<'create'>, or C<''> if there is no action. +Throws a fatal exception if an invalid action is found. + +=cut + +sub link_task_action { + my $self = shift; + my ($path) = @_; + + if (! exists $self->{link_task_for}{$path}) { + debug(4, 4, "| link_task_action($path): no task"); + return ''; + } + + my $action = $self->{link_task_for}{$path}->{action}; + internal_error("bad task action: $action") + unless $action eq 'remove' or $action eq 'create'; + + debug(4, 1, "link_task_action($path): link task exists with action $action"); + return $action; +} + +=head2 dir_task_action($path) + +Finds the dir task action for the given path, if there is one. + +=over 4 + +=item $path + +=back + +Returns C<'remove'>, C<'create'>, or C<''> if there is no action. +Throws a fatal exception if an invalid action is found. + +=cut + +sub dir_task_action { + my $self = shift; + my ($path) = @_; + + if (! exists $self->{dir_task_for}{$path}) { + debug(4, 4, "| dir_task_action($path): no task"); + return ''; + } + + my $action = $self->{dir_task_for}{$path}->{action}; + internal_error("bad task action: $action") + unless $action eq 'remove' or $action eq 'create'; + + debug(4, 4, "| dir_task_action($path): dir task exists with action $action"); + return $action; +} + +=head2 parent_link_scheduled_for_removal($target_path) + +Determine whether the given path or any parent thereof is a link +scheduled for removal + +=over 4 + +=item $target_path + +=back + +Returns boolean + +=cut + +sub parent_link_scheduled_for_removal { + my $self = shift; + my ($target_path) = @_; + + my $prefix = ''; + for my $part (split m{/+}, $target_path) { + $prefix = join_paths($prefix, $part); + debug(5, 4, "| parent_link_scheduled_for_removal($target_path): prefix $prefix"); + if (exists $self->{link_task_for}{$prefix} and + $self->{link_task_for}{$prefix}->{action} eq 'remove') { + debug(4, 4, "| parent_link_scheduled_for_removal($target_path): link scheduled for removal"); + return 1; + } + } + + debug(4, 4, "| parent_link_scheduled_for_removal($target_path): returning false"); + return 0; +} + +=head2 is_a_link($target_path) + +Determine if the given path is a current or planned link. + +=over 4 + +=item $target_path + +=back + +Returns false if an existing link is scheduled for removal and true if +a non-existent link is scheduled for creation. + +=cut + +sub is_a_link { + my $self = shift; + my ($target_path) = @_; + debug(4, 2, "is_a_link($target_path)"); + + if (my $action = $self->link_task_action($target_path)) { + if ($action eq 'remove') { + debug(4, 2, "is_a_link($target_path): returning 0 (remove action found)"); + return 0; + } + elsif ($action eq 'create') { + debug(4, 2, "is_a_link($target_path): returning 1 (create action found)"); + return 1; + } + } + + if (-l $target_path) { + # Check if any of its parent are links scheduled for removal + # (need this for edge case during unfolding) + debug(4, 2, "is_a_link($target_path): is a real link"); + return $self->parent_link_scheduled_for_removal($target_path) ? 0 : 1; + } + + debug(4, 2, "is_a_link($target_path): returning 0"); + return 0; +} + +=head2 is_a_dir($target_path) + +Determine if the given path is a current or planned directory + +=over 4 + +=item $target_path + +=back + +Returns false if an existing directory is scheduled for removal and +true if a non-existent directory is scheduled for creation. We also +need to be sure we are not just following a link. + +=cut + +sub is_a_dir { + my $self = shift; + my ($target_path) = @_; + debug(4, 1, "is_a_dir($target_path)"); + + if (my $action = $self->dir_task_action($target_path)) { + if ($action eq 'remove') { + return 0; + } + elsif ($action eq 'create') { + return 1; + } + } + + return 0 if $self->parent_link_scheduled_for_removal($target_path); + + if (-d $target_path) { + debug(4, 1, "is_a_dir($target_path): real dir"); + return 1; + } + + debug(4, 1, "is_a_dir($target_path): returning false"); + return 0; +} + +=head2 is_a_node($target_path) + +Determine whether the given path is a current or planned node. + +=over 4 + +=item $target_path + +=back + +Returns false if an existing node is scheduled for removal, or true if +a non-existent node is scheduled for creation. We also need to be +sure we are not just following a link. + +=cut + +sub is_a_node { + my $self = shift; + my ($target_path) = @_; + debug(4, 4, "| Checking whether $target_path is a current/planned node"); + + my $laction = $self->link_task_action($target_path); + my $daction = $self->dir_task_action($target_path); + + if ($laction eq 'remove') { + if ($daction eq 'remove') { + internal_error("removing link and dir: $target_path"); + return 0; + } + elsif ($daction eq 'create') { + # Assume that we're unfolding $target_path, and that the link + # removal action is earlier than the dir creation action + # in the task queue. FIXME: is this a safe assumption? + return 1; + } + else { # no dir action + return 0; + } + } + elsif ($laction eq 'create') { + if ($daction eq 'remove') { + # Assume that we're folding $target_path, and that the dir + # removal action is earlier than the link creation action + # in the task queue. FIXME: is this a safe assumption? + return 1; + } + elsif ($daction eq 'create') { + internal_error("creating link and dir: $target_path"); + return 1; + } + else { # no dir action + return 1; + } + } + else { + # No link action + if ($daction eq 'remove') { + return 0; + } + elsif ($daction eq 'create') { + return 1; + } + else { # no dir action + # fall through to below + } + } + + return 0 if $self->parent_link_scheduled_for_removal($target_path); + + if (-e $target_path) { + debug(4, 3, "| is_a_node($target_path): really exists"); + return 1; + } + + debug(4, 3, "| is_a_node($target_path): returning false"); + return 0; +} + +=head2 read_a_link($link) + +Return the destination of a current or planned link. + +=over 4 + +=item $link + +Path to the link target. + +=back + +Returns the destination of the given link. Throws a fatal exception +if the given path is not a current or planned link. + +=cut + +sub read_a_link { + my $self = shift; + my ($link) = @_; + + if (my $action = $self->link_task_action($link)) { + debug(4, 2, "read_a_link($link): task exists with action $action"); + + if ($action eq 'create') { + return $self->{link_task_for}{$link}->{source}; + } + elsif ($action eq 'remove') { + internal_error( + "read_a_link() passed a path that is scheduled for removal: $link" + ); + } + } + elsif (-l $link) { + debug(4, 2, "read_a_link($link): is a real link"); + my $link_dest = readlink $link or error("Could not read link: $link ($!)"); + return $link_dest; + } + internal_error("read_a_link() passed a non-link path: $link\n"); +} + +=head2 do_link($link_dest, $link_src) + +Wrap 'link' operation for later processing + +=over 4 + +=item $link_dest + +the existing file to link to + +=item $link_src + +the file to link + +=back + +Throws an error if this clashes with an existing planned operation. +Cleans up operations that undo previous operations. + +=cut + +sub do_link { + my $self = shift; + my ($link_dest, $link_src) = @_; + + if (exists $self->{dir_task_for}{$link_src}) { + my $task_ref = $self->{dir_task_for}{$link_src}; + + if ($task_ref->{action} eq 'create') { + if ($task_ref->{type} eq 'dir') { + internal_error( + "new link (%s => %s) clashes with planned new directory", + $link_src, + $link_dest, + ); + } + } + elsif ($task_ref->{action} eq 'remove') { + # We may need to remove a directory before creating a link so continue. + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + if (exists $self->{link_task_for}{$link_src}) { + my $task_ref = $self->{link_task_for}{$link_src}; + + if ($task_ref->{action} eq 'create') { + if ($task_ref->{source} ne $link_dest) { + internal_error( + "new link clashes with planned new link: %s => %s", + $task_ref->{path}, + $task_ref->{source}, + ) + } + else { + debug(1, 0, "LINK: $link_src => $link_dest (duplicates previous action)"); + return; + } + } + elsif ($task_ref->{action} eq 'remove') { + if ($task_ref->{source} eq $link_dest) { + # No need to remove a link we are going to recreate + debug(1, 0, "LINK: $link_src => $link_dest (reverts previous action)"); + $self->{link_task_for}{$link_src}->{action} = 'skip'; + delete $self->{link_task_for}{$link_src}; + return; + } + # We may need to remove a link to replace it so continue + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + # Creating a new link + debug(1, 0, "LINK: $link_src => $link_dest"); + my $task = { + action => 'create', + type => 'link', + path => $link_src, + source => $link_dest, + }; + push @{ $self->{tasks} }, $task; + $self->{link_task_for}{$link_src} = $task; + + return; +} + +=head2 do_unlink($file) + +Wrap 'unlink' operation for later processing + +=over 4 + +=item $file + +the file to unlink + +=back + +Throws an error if this clashes with an existing planned operation. +Will remove an existing planned link. + +=cut + +sub do_unlink { + my $self = shift; + my ($file) = @_; + + if (exists $self->{link_task_for}{$file}) { + my $task_ref = $self->{link_task_for}{$file}; + if ($task_ref->{action} eq 'remove') { + debug(1, 0, "UNLINK: $file (duplicates previous action)"); + return; + } + elsif ($task_ref->{action} eq 'create') { + # Do need to create a link then remove it + debug(1, 0, "UNLINK: $file (reverts previous action)"); + $self->{link_task_for}{$file}->{action} = 'skip'; + delete $self->{link_task_for}{$file}; + return; + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + if (exists $self->{dir_task_for}{$file} and $self->{dir_task_for}{$file} eq 'create') { + internal_error( + "new unlink operation clashes with planned operation: %s dir %s", + $self->{dir_task_for}{$file}->{action}, + $file + ); + } + + # Remove the link + debug(1, 0, "UNLINK: $file"); + + my $source = readlink $file or error("could not readlink $file ($!)"); + + my $task = { + action => 'remove', + type => 'link', + path => $file, + source => $source, + }; + push @{ $self->{tasks} }, $task; + $self->{link_task_for}{$file} = $task; + + return; +} + +=head2 do_mkdir($dir) + +Wrap 'mkdir' operation + +=over 4 + +=item $dir + +the directory to remove + +=back + +Throws a fatal exception if operation fails. Outputs a message if +'verbose' option is set. Does not perform operation if 'simulate' +option is set. Cleans up operations that undo previous operations. + +=cut + +sub do_mkdir { + my $self = shift; + my ($dir) = @_; + + if (exists $self->{link_task_for}{$dir}) { + my $task_ref = $self->{link_task_for}{$dir}; + + if ($task_ref->{action} eq 'create') { + internal_error( + "new dir clashes with planned new link (%s => %s)", + $task_ref->{path}, + $task_ref->{source}, + ); + } + elsif ($task_ref->{action} eq 'remove') { + # May need to remove a link before creating a directory so continue + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + if (exists $self->{dir_task_for}{$dir}) { + my $task_ref = $self->{dir_task_for}{$dir}; + + if ($task_ref->{action} eq 'create') { + debug(1, 0, "MKDIR: $dir (duplicates previous action)"); + return; + } + elsif ($task_ref->{action} eq 'remove') { + debug(1, 0, "MKDIR: $dir (reverts previous action)"); + $self->{dir_task_for}{$dir}->{action} = 'skip'; + delete $self->{dir_task_for}{$dir}; + return; + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + debug(1, 0, "MKDIR: $dir"); + my $task = { + action => 'create', + type => 'dir', + path => $dir, + source => undef, + }; + push @{ $self->{tasks} }, $task; + $self->{dir_task_for}{$dir} = $task; + + return; +} + +=head2 do_rmdir($dir) + +Wrap 'rmdir' operation + +=over 4 + +=item $dir + +the directory to remove + +=back + +Throws a fatal exception if operation fails. Outputs a message if +'verbose' option is set. Does not perform operation if 'simulate' +option is set. + +=cut + +sub do_rmdir { + my $self = shift; + my ($dir) = @_; + + if (exists $self->{link_task_for}{$dir}) { + my $task_ref = $self->{link_task_for}{$dir}; + internal_error( + "rmdir clashes with planned operation: %s link %s => %s", + $task_ref->{action}, + $task_ref->{path}, + $task_ref->{source} + ); + } + + if (exists $self->{dir_task_for}{$dir}) { + my $task_ref = $self->{link_task_for}{$dir}; + + if ($task_ref->{action} eq 'remove') { + debug(1, 0, "RMDIR $dir (duplicates previous action)"); + return; + } + elsif ($task_ref->{action} eq 'create') { + debug(1, 0, "MKDIR $dir (reverts previous action)"); + $self->{link_task_for}{$dir}->{action} = 'skip'; + delete $self->{link_task_for}{$dir}; + return; + } + else { + internal_error("bad task action: $task_ref->{action}"); + } + } + + debug(1, 0, "RMDIR $dir"); + my $task = { + action => 'remove', + type => 'dir', + path => $dir, + source => '', + }; + push @{ $self->{tasks} }, $task; + $self->{dir_task_for}{$dir} = $task; + + return; +} + +=head2 do_mv($src, $dst) + +Wrap 'move' operation for later processing. + +=over 4 + +=item $src + +the file to move + +=item $dst + +the path to move it to + +=back + +Throws an error if this clashes with an existing planned operation. +Alters contents of package installation image in stow dir. + +=cut + +sub do_mv { + my $self = shift; + my ($src, $dst) = @_; + + if (exists $self->{link_task_for}{$src}) { + # I don't *think* this should ever happen, but I'm not + # 100% sure. + my $task_ref = $self->{link_task_for}{$src}; + internal_error( + "do_mv: pre-existing link task for $src; action: %s, source: %s", + $task_ref->{action}, $task_ref->{source} + ); + } + elsif (exists $self->{dir_task_for}{$src}) { + my $task_ref = $self->{dir_task_for}{$src}; + internal_error( + "do_mv: pre-existing dir task for %s?! action: %s", + $src, $task_ref->{action} + ); + } + + # Remove the link + debug(1, 0, "MV: $src -> $dst"); + + my $task = { + action => 'move', + type => 'file', + path => $src, + dest => $dst, + }; + push @{ $self->{tasks} }, $task; + + # FIXME: do we need this for anything? + #$self->{mv_task_for}{$file} = $task; + + return; +} + + +############################################################################# +# +# End of methods; subroutines follow. +# FIXME: Ideally these should be in a separate module. + + +# ===== PRIVATE SUBROUTINE =================================================== +# Name : internal_error() +# Purpose : output internal error message in a consistent form and die +=over 4 + +=item $message => error message to output + +=back + +Returns : n/a +Throws : n/a + +=cut + +sub internal_error { + my ($format, @args) = @_; + my $error = sprintf($format, @args); + my $stacktrace = Carp::longmess(); + die <. + +=cut + +use strict; +use warnings; + +use File::Spec; +use POSIX qw(getcwd); + +use base qw(Exporter); +our @EXPORT_OK = qw( + error debug set_debug_level set_test_mode + join_paths parent canon_path restore_cwd + adjust_dotfile unadjust_dotfile +); + +our $ProgramName = 'stow'; +our $VERSION = '@VERSION@'; + +############################################################################# +# +# General Utilities: nothing stow specific here. +# +############################################################################# + +=head1 IMPORTABLE SUBROUTINES + +=head2 error($format, @args) + +Outputs an error message in a consistent form and then dies. + +=cut + +sub error { + my ($format, @args) = @_; + die "$ProgramName: ERROR: " . sprintf($format, @args) . "\n"; +} + +=head2 set_debug_level($level) + +Sets verbosity level for C. + +=cut + +our $debug_level = 0; + +sub set_debug_level { + my ($level) = @_; + $debug_level = $level; +} + +=head2 set_test_mode($on_or_off) + +Sets testmode on or off. + +=cut + +our $test_mode = 0; + +sub set_test_mode { + my ($on_or_off) = @_; + if ($on_or_off) { + $test_mode = 1; + } + else { + $test_mode = 0; + } +} + +=head2 debug($level[, $indent_level], $msg) + +Logs to STDERR based on C<$debug_level> setting. C<$level> is the +minimum verbosity level required to output C<$msg>. All output is to +STDERR to preserve backward compatibility, except for in test mode, +when STDOUT is used instead. In test mode, the verbosity can be +overridden via the C environment variable. + +Verbosity rules: + +=over 4 + +=item 0: errors only + +=item >= 1: print operations: LINK/UNLINK/MKDIR/RMDIR/MV + +=item >= 2: print operation exceptions + +e.g. "_this_ already points to _that_", skipping, deferring, +overriding, fixing invalid links + +=item >= 3: print trace detail: trace: stow/unstow/package/contents/node + +=item >= 4: debug helper routines + +=item >= 5: debug ignore lists + +=back + +=cut + +sub debug { + my $level = shift; + my $indent_level; + # Maintain backwards-compatibility in case anyone's relying on this. + $indent_level = $_[0] =~ /^\d+$/ ? shift : 0; + my $msg = shift; + if ($debug_level >= $level) { + my $indent = ' ' x $indent_level; + if ($test_mode) { + print "# $indent$msg\n"; + } + else { + warn "$indent$msg\n"; + } + } +} + +#===== METHOD =============================================================== +# Name : join_paths() +# Purpose : concatenates given paths +# Parameters: path1, path2, ... => paths +# Returns : concatenation of given paths +# Throws : n/a +# Comments : Factors out some redundant path elements: +# : '//' => '/', and 'a/b/../c' => 'a/c'. We need this function +# : with this behaviour, even though b could be a symlink to +# : elsewhere, as noted in the perldoc for File::Spec->canonpath(). +# : This behaviour is deliberately different to +# : Stow::Util::canon_path(), because the way join_paths() is used +# : relies on this. Firstly, there is no guarantee that the paths +# : exist, so a filesystem check is inappropriate. +# : +# : For example, it's used to determine the path from the target +# : directory to a symlink destination. So if a symlink +# : path/to/target/a/b/c points to ../../../stow/pkg/a/b/c, +# : then joining path/to/target/a/b with ../../../stow/pkg/a/b/c +# : yields path/to/stow/pkg/a/b/c, and it's crucial that the +# : path/to/stow prefix matches a recognisable stow directory. +#============================================================================ +sub join_paths { + my @paths = @_; + + debug(5, 5, "| Joining: @paths"); + my $result = ''; + for my $part (@paths) { + next if ! length $part; # probably shouldn't happen? + $part = File::Spec->canonpath($part); + + if (substr($part, 0, 1) eq '/') { + $result = $part; # absolute path, so ignore all previous parts + } + else { + $result .= '/' if length $result && $result ne '/'; + $result .= $part; + } + debug(7, 6, "| Join now: $result"); + } + debug(6, 5, "| Joined: $result"); + + # Need this to remove any initial ./ + $result = File::Spec->canonpath($result); + + # remove foo/.. + 1 while $result =~ s,(^|/)(?!\.\.)[^/]+/\.\.(/|$),$1,; + debug(6, 5, "| After .. removal: $result"); + + $result = File::Spec->canonpath($result); + debug(5, 5, "| Final join: $result"); + + return $result; +} + +#===== METHOD =============================================================== +# Name : parent +# Purpose : find the parent of the given path +# Parameters: @path => components of the path +# Returns : returns a path string +# Throws : n/a +# Comments : allows you to send multiple chunks of the path +# : (this feature is currently not used) +#============================================================================ +sub parent { + my @path = @_; + my $path = join '/', @_; + my @elts = split m{/+}, $path; + pop @elts; + return join '/', @elts; +} + +#===== METHOD =============================================================== +# Name : canon_path +# Purpose : find absolute canonical path of given path +# Parameters: $path +# Returns : absolute canonical path +# Throws : n/a +# Comments : is this significantly different from File::Spec->rel2abs? +#============================================================================ +sub canon_path { + my ($path) = @_; + + my $cwd = getcwd(); + chdir($path) or error("canon_path: cannot chdir to $path from $cwd"); + my $canon_path = getcwd(); + restore_cwd($cwd); + + return $canon_path; +} + +sub restore_cwd { + my ($prev) = @_; + chdir($prev) or error("Your current directory $prev seems to have vanished"); +} + +sub adjust_dotfile { + my ($pkg_node) = @_; + (my $adjusted = $pkg_node) =~ s/^dot-([^.])/.$1/; + return $adjusted; +} + +# Needed when unstowing with --compat and --dotfiles +sub unadjust_dotfile { + my ($target_node) = @_; + return $target_node if $target_node =~ /^\.\.?$/; + (my $adjusted = $target_node) =~ s/^\./dot-/; + return $adjusted; +} + +=head1 BUGS + +=head1 SEE ALSO + +=cut + +1; + +# Local variables: +# mode: perl +# end: +# vim: ft=perl diff --git a/mdate-sh b/mdate-sh deleted file mode 100755 index cd916c0..0000000 --- a/mdate-sh +++ /dev/null @@ -1,201 +0,0 @@ -#!/bin/sh -# Get modification time of a file or directory and pretty-print it. - -scriptversion=2005-06-29.22 - -# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005 Free Software -# Foundation, Inc. -# written by Ulrich Drepper , June 1995 -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software Foundation, -# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - -# This file is maintained in Automake, please report -# bugs to or send patches to -# . - -case $1 in - '') - echo "$0: No file. Try \`$0 --help' for more information." 1>&2 - exit 1; - ;; - -h | --h*) - cat <<\EOF -Usage: mdate-sh [--help] [--version] FILE - -Pretty-print the modification time of FILE. - -Report bugs to . -EOF - exit $? - ;; - -v | --v*) - echo "mdate-sh $scriptversion" - exit $? - ;; -esac - -# Prevent date giving response in another language. -LANG=C -export LANG -LC_ALL=C -export LC_ALL -LC_TIME=C -export LC_TIME - -# GNU ls changes its time format in response to the TIME_STYLE -# variable. 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Check the \`README' file, - it often tells you about the needed prerequisites for installing - this package. You may also peek at any GNU archive site, in case - some other package would contain this missing \`$1' program." - exit 1 - ;; -esac - -exit 0 - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "scriptversion=" -# time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-end: "$" -# End: diff --git a/stamp-vti b/stamp-vti deleted file mode 100644 index 3245b32..0000000 --- a/stamp-vti +++ /dev/null @@ -1,4 +0,0 @@ -@set UPDATED 20 February 2008 -@set UPDATED-MONTH February 2008 -@set EDITION 2.0.2 -@set VERSION 2.0.2 diff --git a/stow.8 b/stow.8 deleted file mode 100644 index 339531f..0000000 --- a/stow.8 +++ /dev/null @@ -1,448 +0,0 @@ -.TH STOW 8 "28 March 1998" -.SH NAME -stow \- software package installation manager -.SH SYNOPSIS -.B stow -.RI [ options ] -.IR package ... -.SH DESCRIPTION -This manual page describes GNU Stow 1.3.3, a program for managing the -installation of software packages. This is not the definitive -documentation for stow; for that, see the info manual. -.PP -Stow is a tool for managing the installation of multiple software -packages in the same run-time directory tree. One historical difficulty -of this task has been the need to administer, upgrade, install, and -remove files in independent packages without confusing them with other -files sharing the same filesystem space. For instance, it is common to -install Perl and Emacs in -.IR /usr/local . -When one does so, one winds up -(as of Perl 4.036 and Emacs 19.22) -with the following files in -.IR /usr/local/man/man1 : -.IR a2p.1 ; -.IR ctags.1 ; -.IR emacs.1 ; -.IR etags.1 ; -.IR h2ph.1 ; -.IR perl.1 ; -and -.IR s2p.1 . -Now -suppose it's time to uninstall Perl. Which man pages get removed? -Obviously -.I perl.1 -is one of them, but it should not be the -administrator's responsibility to memorize the ownership of individual -files by separate packages. -.PP -The approach used by Stow is to install each package into its own -tree, then use symbolic links to make it appear as though the files are -installed in the common tree. Administration can be performed in the -package's private tree in isolation from clutter from other packages. -Stow can then be used to update the symbolic links. The structure of -each private tree should reflect the desired structure in the common -tree; i.e. (in the typical case) there should be a -.I bin -directory -containing executables, a -.I man/man1 -directory containing section 1 man -pages, and so on. -.PP -Stow was inspired by Carnegie Mellon's Depot program, but is -substantially simpler and safer. Whereas Depot required database files -to keep things in sync, Stow stores no extra state between runs, so -there's no danger (as there was in Depot) of mangling directories when -file hierarchies don't match the database. Also unlike Depot, Stow will -never delete any files, directories, or links that appear in a Stow -directory (e.g., -.IR /usr/local/stow/emacs ), -so it's always possible to -rebuild the target tree (e.g., -.IR /usr/local ). -.SH TERMINOLOGY -A ``package'' is a related collection of files and directories that -you wish to administer as a unit--e.g., Perl or Emacs--and that needs -to be installed in a particular directory structure--e.g., with -.IR bin , -.IR lib , -and -.I man -subdirectories. -.PP -A ``target directory'' is the root of a tree in which one or more -packages wish to -.B appear -to be installed. A common, but by no means -the only such location is -.IR /usr/local . -The examples in this manual page -will use -.I /usr/local -as the target directory. -.PP -A ``stow directory'' is the root of a tree containing separate -packages in private subtrees. When Stow runs, it uses the current -directory as the default stow directory. The examples in this manual -page will use -.I /usr/local/stow -as the stow directory, so that individual -packages will be, for example, -.I /usr/local/stow/perl -and -.IR /usr/local/stow/emacs . -.PP -An ``installation image'' is the layout of files and directories -required by a package, relative to the target directory. Thus, the -installation image for Perl includes: a -.I bin -directory containing -.I perl -and -.I a2p -(among others); an -.I info -directory containing Texinfo -documentation; a -.I lib/perl -directory containing Perl libraries; and a -.I man/man1 -directory containing man pages. -.PP -A ``package directory'' is the root of a tree containing the -installation image for a particular package. Each package directory -must reside in a stow directory--e.g., the package directory -.I /usr/local/stow/perl -must reside in the stow directory -.IR /usr/local/stow . -The ``name'' of a package is the name of its -directory within the stow directory--e.g., -.IR perl . -.PP -Thus, the Perl executable might reside in -.IR /usr/local/stow/perl/bin/perl , -where -.I /usr/local -is the target -directory, -.I /usr/local/stow -is the stow directory, -.I /usr/local/stow/perl -is the package directory, and -.I bin/perl -within -is part of the installation image. -.PP -A ``symlink'' is a symbolic link. A symlink can be ``relative'' or -``absolute''. An absolute symlink names a full path; that is, one -starting from -.IR / . -A relative symlink names a relative path; that is, -one not starting from -.IR / . -The target of a relative symlink is -computed starting from the symlink's own directory. Stow only creates -relative symlinks. -.SH OPTIONS -The stow directory is assumed to be the current directory, and the -target directory is assumed to be the parent of the current directory -(so it is typical to execute -.I stow -from the directory -.IR /usr/local/stow ). -Each -.I package -given on the command line is the name of a package in the stow -directory (e.g., -.IR perl ). -By default, they are installed into the -target directory (but they can be deleted instead using `-D'). -.TP -.I -n -.TP -.I --no -Do not perform any operations that modify the filesystem; merely -show what would happen. Since no actual operations are performed, -.I stow -n -could report conflicts when none would actually take -place (see ``Conflicts'' in the info manual); -but it won't fail to report conflicts -that -.B would -take place. -.TP -.I -c -.TP -.I --conflicts -Do not exit immediately when a conflict is encountered. This -option implies `-n', and is used to search for all conflicts that -might arise from an actual Stow operation. As with `-n', however, -false conflicts might be reported (see ``Conflicts'' in the info manual). -.TP -.I "-d DIR" -.TP -.I --dir=DIR -Set the stow directory to DIR instead of the current directory. -This also has the effect of making the default target directory be -the parent of DIR. -.TP -.I "-t DIR" -.TP -.I --target=DIR -Set the target directory to DIR instead of the parent of the stow -directory. -.TP -.I -v -.TP -.I --verbose[=N] -Send verbose output to standard error describing what Stow is -doing. Verbosity levels are 0, 1, 2, and 3; 0 is the default. -Using `-v' or `--verbose' increases the verbosity by one; using -`--verbose=N' sets it to N. -.TP -.I -D -.TP -.I --delete -Delete packages from the target directory rather than installing -them. -.TP -.I -R -.TP -.I --restow -Restow packages (first unstow, then stow again). This is useful -for pruning obsolete symlinks from the target tree after updating -the software in a package. -.TP -.I -V -.TP -.I --version -Show Stow version number, and exit. -.TP -.I -h -.TP -.I --help -Show Stow command syntax, and exit. -.SH "INSTALLING PACKAGES" -The default action of Stow is to install a package. This means -creating symlinks in the target tree that point into the package tree. -Stow attempts to do this with as few symlinks as possible; in other -words, if Stow can create a single symlink that points to an entire -subtree within the package tree, it will choose to do that rather than -create a directory in the target tree and populate it with symlinks. -.PP -For example, suppose that no packages have yet been installed in -.IR /usr/local ; -it's completely empty (except for the -.I stow -subdirectory, of course). Now suppose the Perl package is installed. -Recall that it includes the following directories in its installation -image: -.IR bin ; -.IR info ; -.IR lib/perl ; -.IR man/man1 . -Rather than creating -the directory -.I /usr/local/bin -and populating it with symlinks to -.I ../stow/perl/bin/perl -and -.I ../stow/perl/bin/a2p -(and so on), Stow -will create a single symlink, -.IR /usr/local/bin , -which points to -.IR stow/perl/bin . -In this way, it still works to refer to -.I /usr/local/bin/perl -and -.IR /usr/local/bin/a2p , -and fewer symlinks have -been created. This is called ``tree folding'', since an entire subtree -is ``folded'' into a single symlink. -.PP -To complete this example, Stow will also create the symlink -.I /usr/local/info -pointing to -.IR stow/perl/info ; -the symlink -.I /usr/local/lib -pointing to -.IR stow/perl/lib ; -and the symlink -.I /usr/local/man -pointing to -.IR stow/perl/man . -.PP -Now suppose that instead of installing the Perl package into an empty -target tree, the target tree is not empty to begin with. Instead, it -contains several files and directories installed under a different -system-administration philosophy. In particular, -.I /usr/local/bin -already exists and is a directory, as are -.I /usr/local/lib -and -.IR /usr/local/man/man1 . -In this case, Stow will descend into -.I /usr/local/bin -and create symlinks to -.I ../stow/perl/bin/perl -and -.I ../stow/perl/bin/a2p -(etc.), and it will descend into -.I /usr/local/lib -and create the tree-folding symlink -.I perl -pointing to -.IR ../stow/perl/lib/perl , -and so on. As a rule, Stow only descends as -far as necessary into the target tree when it can create a tree-folding -symlink. -.PP -The time often comes when a tree-folding symlink has to be undone -because another package uses one or more of the folded subdirectories in -its installation image. This operation is called ``splitting open'' a -folded tree. It involves removing the original symlink from the target -tree, creating a true directory in its place, and then populating the -new directory with symlinks to the newly-installed package -.B and -to the -old package that used the old symlink. For example, suppose that after -installing Perl into an empty -.IR /usr/local , -we wish to install Emacs. -Emacs's installation image includes a -.I bin -directory containing the -.I emacs -and -.I etags -executables, among others. Stow must make these -files appear to be installed in -.IR /usr/local/bin , -but presently -.I /usr/local/bin -is a symlink to -.IR stow/perl/bin . -Stow therefore takes -the following steps: the symlink -.I /usr/local/bin -is deleted; the -directory -.I /usr/local/bin -is created; links are made from -.I /usr/local/bin -to -.I ../stow/emacs/bin/emacs -and -.IR ../stow/emacs/bin/etags ; -and links are made from -.I /usr/local/bin -to -.I ../stow/perl/bin/perl -and -.IR ../stow/perl/bin/a2p . -.PP -When splitting open a folded tree, Stow makes sure that the symlink -it is about to remove points inside a valid package in the current stow -directory. -.BR "Stow will never delete anything that it doesn't own" . -Stow ``owns'' everything living in the target tree that points into a -package in the stow directory. Anything Stow owns, it can recompute if -lost. Note that by this definition, Stow doesn't ``own'' anything -.B in -the stow directory or in any of the packages. -.PP -If Stow needs to create a directory or a symlink in the target tree -and it cannot because that name is already in use and is not owned by -Stow, then a conflict has arisen. See ``Conflicts'' in the info manual. -.SH "DELETING PACKAGES" -When the `-D' option is given, the action of Stow is to delete a -package from the target tree. Note that Stow will not delete anything -it doesn't ``own''. Deleting a package does -.B not -mean removing it from -the stow directory or discarding the package tree. -.PP -To delete a package, Stow recursively scans the target tree, -skipping over the stow directory (since that is usually a subdirectory -of the target tree) and any other stow directories it encounters (see -``Multiple stow directories'' in the info manual). Any symlink it finds that points into -the package being deleted is removed. Any directory that contained -only symlinks to the package being deleted is removed. Any directory -that, after removing symlinks and empty subdirectories, contains only -symlinks to a single other package, is considered to be a previously -``folded'' tree that was ``split open.'' Stow will re-fold the tree by -removing the symlinks to the surviving package, removing the directory, -then linking the directory back to the surviving package. -.SH "SEE ALSO" -The info manual ``Stow 1.3.3: -Managing the installation of software packages'' -by Bob Glickstein, Zanshin Software, Inc. -.SH BUGS -Please report bugs in Stow using the Debian bug tracking system. -.PP -Currently known bugs include: -.IP * -The empty-directory problem. If package FOO includes an empty -directory--say, FOO/BAR--then: -.IP -1. -if no other package has a BAR subdirectory, everything's fine. -.IP -2. -if another stowed package, QUUX, has a BAR subdirectory, then -when stowing, TARGETDIR/BAR will be ``split open'' and the -contents of QUUX/BAR will be individually stowed. So far, so -good. But when unstowing QUUX, TARGETDIR/BAR will be -removed, even though FOO/BAR needs it to remain. A -workaround for this problem is to create a file in FOO/BAR as -a placeholder. If you name that file -.IR .placeholder , -it will -be easy to find and remove such files when this bug is fixed. -.IP * -When using multiple stow directories (see ``Multiple stow -directories'' in the info manual), Stow fails to ``split open'' tree-folding symlinks -(see ``Installing packages'' in the info manual) that point into a stow directory -which is not the one in use by the current Stow command. Before -failing, it should search the target of the link to see whether -any element of the path contains a -.I .stow -file. If it finds one, -it can ``learn'' about the cooperating stow directory to -short-circuit the -.I .stow -search the next time it encounters a -tree-folding symlink. -.SH AUTHOR -This man page was constructed by Charles Briscoe-Smith from -parts of Stow's info manual. That manual contained the following -notice, which, as it says, applied to this manual page, too. The text -of the section entitled ``GNU General Public License'' can be found in -the file -.I /usr/share/common-licenses/GPL -on any Debian GNU/Linux system. If you don't have access to a Debian -system, or the GPL is not there, write to the Free Software Foundation, -Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA. -.IP -Software and documentation Copyright (C) 1993, 1994, 1995, 1996 by -Bob Glickstein . -.IP -Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice are -preserved on all copies. -.IP -Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided also -that the section entitled ``GNU General Public License'' is included with -the modified manual, and provided that the entire resulting derived -work is distributed under the terms of a permission notice identical to -this one. -.IP -Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Free Software Foundation. diff --git a/stow.in b/stow.in deleted file mode 100755 index e6fd1cd..0000000 --- a/stow.in +++ /dev/null @@ -1,1794 +0,0 @@ -#!@PERL@ - -# GNU Stow - manage the installation of multiple software packages -# Copyright (C) 1993, 1994, 1995, 1996 by Bob Glickstein -# Copyright (C) 2000, 2001 Guillaume Morin -# Copyright (C) 2007 Kahlil Hodgson -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -use strict; -use warnings; - -require 5.005; -use POSIX qw(getcwd); -use Getopt::Long; - -my $Version = '@VERSION@'; -my $ProgramName = $0; -$ProgramName =~ s{.*/}{}; - -# Verbosity rules: -# -# 0: errors only -# > 0: print operations: LINK/UNLINK/MKDIR/RMDIR -# > 1: print trace: stow/unstow package/contents/node -# > 2: print trace detail: "_this_ already points to _that_" -# -# All output (except for version() and usage()) is to stderr to preserve -# backward compatibility. - -# These are the defaults for command line options -our %Option = ( - help => 0, - conflicts => 0, - action => 'stow', - simulate => 0, - verbose => 0, - paranoid => 0, - dir => undef, - target => undef, - ignore => [], - override => [], - defer => [], -); - -# This becomes static after option processing -our $Stow_Path; # only use in main loop and find_stowed_path() - -# Store conflicts during pre-processing -our @Conflicts = (); - -# Store command line packges to stow (-S and -R) -our @Pkgs_To_Stow = (); - -# Store command line packages to unstow (-D and -R) -our @Pkgs_To_Delete = (); - -# The following structures are used by the abstractions that allow us to -# defer operating on the filesystem until after all potential conflcits have -# been assessed. - -# our @Tasks: list of operations to be performed (in order) -# each element is a hash ref of the form -# { -# action => ... -# type => ... -# path => ... (unique) -# source => ... (only for links) -# } -our @Tasks = (); - -# my %Dir_Task_For: map a path to the corresponding directory task reference -# This structurew allows us to quickly determine if a path has an existing -# directory task associated with it. -our %Dir_Task_For = (); - -# my %Link_Task_For: map a path to the corresponding directory task reference -# This structurew allows us to quickly determine if a path has an existing -# directory task associated with it. -our %Link_Task_For = (); - -# NB: directory tasks and link tasks are NOT mutually exclusive - -# put the main loop in this block so we can load the -# rest of the code as a module for testing -if ( not caller() ) { - - process_options(); - set_stow_path(); - - # current dir is now the target directory - - for my $package (@Pkgs_To_Delete) { - if (not -d join_paths($Stow_Path,$package)) { - error("The given package name ($package) is not in your stow path"); - } - if ($Option{'verbose'} > 1) { - warn "Unstowing package $package...\n"; - } - if ($Option{'compat'}) { - unstow_contents_orig( - join_paths($Stow_Path,$package), # path to package - '', # target is current_dir - ); - } - else { - unstow_contents( - join_paths($Stow_Path,$package), # path to package - '', # target is current_dir - ); - } - if ($Option{'verbose'} > 1) { - warn "Unstowing package $package...done\n"; - } - } - - for my $package (@Pkgs_To_Stow) { - if (not -d join_paths($Stow_Path,$package)) { - error("The given package name ($package) is not in your stow path"); - } - if ($Option{'verbose'} > 1) { - warn "Stowing package $package...\n"; - } - stow_contents( - join_paths($Stow_Path,$package), # path package - '', # target is current dir - join_paths($Stow_Path,$package), # source from target - ); - if ($Option{'verbose'} > 1) { - warn "Stowing package $package...done\n"; - } - } - - # --verbose: tell me what you are planning to do - # --simulate: don't execute planned operations - # --conflicts: just list any detected conflicts - - if (scalar @Conflicts) { - warn "WARNING: conflicts detected.\n"; - if ($Option{'conflicts'}) { - map { warn $_ } @Conflicts; - } - warn "WARNING: all operations aborted.\n"; - } - else { - process_tasks(); - } -} - - -#===== SUBROUTINE =========================================================== -# Name : process_options() -# Purpose : parse command line options and update the %Option hash -# Parameters: none -# Returns : n/a -# Throws : a fatal error if a bad command line option is given -# Comments : checks @ARGV for valid package names -#============================================================================ -sub process_options { - - get_defaults(); - #$,="\n"; print @ARGV,"\n"; # for debugging rc file - - Getopt::Long::config('no_ignore_case', 'bundling', 'permute'); - GetOptions( - 'v' => sub { $Option{'verbose'}++ }, - 'verbose:i' => sub { $Option{'verbose'}+= $_[1] || 1 }, - 'h|help' => sub { $Option{'help'} = '1' }, - 'n|no|simulate' => sub { $Option{'simulate'} = '1' }, - 'c|conflicts' => sub { $Option{'conflicts'} = '1' }, - 'V|version' => sub { $Option{'version'} = '1' }, - 'p|compat' => sub { $Option{'compat'} = '1' }, - 'd|dir=s' => sub { $Option{'dir'} = $_[1] }, - 't|target=s' => sub { $Option{'target'} = $_[1] }, - - # clean and pre-compile any regex's at parse time - 'ignore=s' => - sub { - my $regex = strip_quotes($_[1]); - push @{$Option{'ignore'}}, qr($regex\z) - }, - - 'override=s' => - sub { - my $regex = strip_quotes($_[1]); - push @{$Option{'override'}}, qr(\A$regex) - }, - - 'defer=s' => - sub { - my $regex = strip_quotes($_[1]); - push @{$Option{'defer'}}, qr(\A$regex) ; - }, - - # a little craziness so we can do different actions on the same line: - # a -D, -S, or -R changes the action that will be performed on the - # package arguments that follow it. - 'D|delete' => sub { $Option{'action'} = 'delete' }, - 'S|stow' => sub { $Option{'action'} = 'stow' }, - 'R|restow' => sub { $Option{'action'} = 'restow' }, - '<>' => - sub { - if ($Option{'action'} eq 'restow') { - push @Pkgs_To_Delete, $_[0]; - push @Pkgs_To_Stow, $_[0]; - } - elsif ($Option{'action'} eq 'delete') { - push @Pkgs_To_Delete, $_[0]; - } - else { - push @Pkgs_To_Stow, $_[0]; - } - }, - ) or usage(); - - #print "$Option{'dir'}\n"; print "$Option{'target'}\n"; exit; - - # clean any leading and trailing whitespace in paths - if ($Option{'dir'}) { - $Option{'dir'} =~ s/\A +//; - $Option{'dir'} =~ s/ +\z//; - } - if ($Option{'target'}) { - $Option{'target'} =~ s/\A +//; - $Option{'target'} =~ s/ +\z//; - } - - if ($Option{'help'}) { - usage(); - } - if ($Option{'version'}) { - version(); - } - if ($Option{'conflicts'}) { - $Option{'simulate'} = 1; - } - - if (not scalar @Pkgs_To_Stow and not scalar @Pkgs_To_Delete ) { - usage("No packages named"); - } - - # check package arguments - for my $package ( (@Pkgs_To_Stow, @Pkgs_To_Delete) ) { - $package =~ s{/+$}{}; # delete trailing slashes - if ( $package =~ m{/} ) { - error("Slashes are not permitted in package names"); - } - } - - return; -} - -#===== SUBROUTINE ============================================================ -# Name : get_defaults() -# Purpose : search for default settings in any .stow files -# Parameters: none -# Returns : n/a -# Throws : no exceptions -# Comments : prepends the contents '~/.stowrc' and '.stowrc' to the command -# : line so they get parsed just like noremal arguments. (This was -# : hacked in so that Emil and I could set different preferences). -#============================================================================= -sub get_defaults { - - my @defaults = (); - for my $file ($ENV{'HOME'}.'/.stowrc','.stowrc') { - if (-r $file ) { - warn "Loading defaults from $file\n"; - open my $FILE, '<', $file - or die "Could not open $file for reading\n"; - while (my $line = <$FILE> ){ - chomp $line; - push @defaults, split " ", $line; - } - close $FILE or die "Could not close open file: $file\n"; - } - } - # doing this inline does not seem to work - unshift @ARGV, @defaults; - return; -} - -#===== SUBROUTINE =========================================================== -# Name : usage() -# Purpose : print program usage message and exit -# Parameters: msg => string to prepend to the usage message -# Returns : n/a -# Throws : n/a -# Comments : if 'msg' is given, then exit with non-zero status -#============================================================================ -sub usage { - my ($msg) = @_; - - if ($msg) { - print "$ProgramName: $msg\n\n"; - } - - print <<"EOT"; -$ProgramName (GNU Stow) version $Version - -SYNOPSIS: - - $ProgramName [OPTION ...] [-D|-S|-R] PACKAGE ... [-D|-S|-R] PACKAGE ... - -OPTIONS: - - -n, --no Do not actually make any filesystem changes - -c, --conflicts Scan for and print any conflicts, implies -n - -d DIR, --dir=DIR Set stow dir to DIR (default is current dir) - -t DIR, --target=DIR Set target to DIR (default is parent of stow dir) - -v, --verbose[=N] Increase verbosity (levels are 0,1,2,3; - -v or --verbose adds 1; --verbose=N sets level) - - -S, --stow Stow the package names that follow this option - -D, --delete Unstow the package names that follow this option - -R, --restow Restow (like stow -D followed by stow -S) - -p, --compat use legacy algorithm for unstowing - - --ignore=REGEX ignore files ending in this perl regex - --defer=REGEX defer stowing files begining with this perl regex - if the file is already stowed to another package - --override=REGEX force stowing files begining with this perl regex - if the file is already stowed to another package - -V, --version Show stow version number - -h, --help Show this help -EOT - exit( $msg ? 1 : 0 ); -} - -#===== SUBROUTINE =========================================================== -# Name : set_stow_path() -# Purpose : find the relative path to the stow directory -# Parameters: none -# Returns : a relative path -# Throws : fatal error if either default directories or those set by the -# : the command line flags are not valid. -# Comments : This sets the current working directory to $Option{target} -#============================================================================ -sub set_stow_path { - - # Changing dirs helps a lot when soft links are used - # Also prevents problems when 'stow_dir' or 'target' are - # supplied as relative paths (FIXME: examples?) - - my $current_dir = getcwd(); - - # default stow dir is the current directory - if (not $Option{'dir'} ) { - $Option{'dir'} = getcwd(); - } - if (not chdir($Option{'dir'})) { - error("Cannot chdir to target tree: '$Option{'dir'}'"); - } - my $stow_dir = getcwd(); - - # back to start in case target is relative - if (not chdir($current_dir)) { - error("Your directory does not seem to exist anymore"); - } - - # default target is the parent of the stow directory - if (not $Option{'target'}) { - $Option{'target'} = parent($Option{'dir'}); - } - if (not chdir($Option{'target'})) { - error("Cannot chdir to target tree: $Option{'target'}"); - } - - # set our one global - $Stow_Path = relative_path(getcwd(),$stow_dir); - - if ($Option{'verbose'} > 1) { - warn "current dir is ".getcwd()."\n"; - warn "stow dir path is $Stow_Path\n"; - } -} - -#===== SUBROUTINE =========================================================== -# Name : stow_contents() -# Purpose : stow the contents of the given directory -# Parameters: $path => relative path to source dir from current directory -# : $source => relative path to symlink source from the dir of target -# : $target => relative path to symlink target from the current directory -# Returns : n/a -# Throws : a fatal error if directory cannot be read -# Comments : stow_node() and stow_contents() are mutually recursive -# : $source and $target are used for creating the symlink -# : $path is used for folding/unfolding trees as necessary -#============================================================================ -sub stow_contents { - - my ($path, $target, $source) = @_; - - if ($Option{'verbose'} > 1){ - warn "Stowing contents of $path\n"; - } - if ($Option{'verbose'} > 2){ - warn "--- $target => $source\n"; - } - - if (not -d $path) { - error("stow_contents() called on a non-directory: $path"); - } - - opendir my $DIR, $path - or error("cannot read directory: $path"); - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - next NODE if ignore($node); - stow_node( - join_paths($path, $node), # path - join_paths($target,$node), # target - join_paths($source,$node), # source - ); - } -} - -#===== SUBROUTINE =========================================================== -# Name : stow_node() -# Purpose : stow the given node -# Parameters: $path => realtive path to source node from the current directory -# : $target => realtive path to symlink target from the current directory -# : $source => realtive path to symlink source from the dir of target -# Returns : n/a -# Throws : fatal exception if a conflict arises -# Comments : stow_node() and stow_contents() are mutually recursive -# : $source and $target are used for creating the symlink -# : $path is used for folding/unfolding trees as necessary -#============================================================================ -sub stow_node { - - my ($path, $target, $source) = @_; - - if ($Option{'verbose'} > 1) { - warn "Stowing $path\n"; - } - if ($Option{'verbose'} > 2) { - warn "--- $target => $source\n"; - } - - # don't try to stow absolute symlinks (they cant be unstowed) - if (-l $source) { - my $second_source = read_a_link($source); - if ($second_source =~ m{\A/} ) { - conflict("source is an absolute symlink $source => $second_source"); - if ($Option{'verbose'} > 2) { - warn "absolute symlinks cannot be unstowed"; - } - return; - } - } - - # does the target already exist? - if (is_a_link($target)) { - - # where is the link pointing? - my $old_source = read_a_link($target); - if (not $old_source) { - error("Could not read link: $target"); - } - if ($Option{'verbose'} > 2) { - warn "--- Evaluate existing link: $target => $old_source\n"; - } - - # does it point to a node under our stow directory? - my $old_path = find_stowed_path($target, $old_source); - if (not $old_path) { - conflict("existing target is not owned by stow: $target"); - return; # XXX # - } - - # does the existing $target actually point to anything? - if (is_a_node($old_path)) { - if ($old_source eq $source) { - if ($Option{'verbose'} > 2) { - warn "--- Skipping $target as it already points to $source\n"; - } - } - elsif (defer($target)) { - if ($Option{'verbose'} > 2) { - warn "--- deferring installation of: $target\n"; - } - } - elsif (override($target)) { - if ($Option{'verbose'} > 2) { - warn "--- overriding installation of: $target\n"; - } - do_unlink($target); - do_link($source,$target); - } - elsif (is_a_dir(join_paths(parent($target),$old_source)) && - is_a_dir(join_paths(parent($target),$source)) ) { - - # if the existing link points to a directory, - # and the proposed new link points to a directory, - # then we can unfold the tree at that point - - if ($Option{'verbose'} > 2){ - warn "--- Unfolding $target\n"; - } - do_unlink($target); - do_mkdir($target); - stow_contents($old_path, $target, join_paths('..',$old_source)); - stow_contents($path, $target, join_paths('..',$source)); - } - else { - conflict( - q{existing target is stowed to a different package: %s => %s}, - $target, - $old_source, - ); - } - } - else { - # the existing link is invalid, so replace it with a good link - if ($Option{'verbose'} > 2){ - warn "--- replacing invalid link: $path\n"; - } - do_unlink($target); - do_link($source, $target); - } - } - elsif (is_a_node($target)) { - if ($Option{'verbose'} > 2) { - warn("--- Evaluate existing node: $target\n"); - } - if (is_a_dir($target)) { - stow_contents($path, $target, join_paths('..',$source)); - } - else { - conflict( - qq{existing target is neither a link nor a directory: $target} - ); - } - } - else { - do_link($source, $target); - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : unstow_contents_orig() -# Purpose : unstow the contents of the given directory -# Parameters: $path => relative path to source dir from current directory -# : $target => relative path to symlink target from the current directory -# Returns : n/a -# Throws : a fatal error if directory cannot be read -# Comments : unstow_node() and unstow_contents() are mutually recursive -# : Here we traverse the target tree, rather than the source tree. -#============================================================================ -sub unstow_contents_orig { - - my ($path, $target) = @_; - - # don't try to remove anything under a stow directory - if ($target eq $Stow_Path or -e "$target/.stow" or -e "$target/.nonstow") { - return; - } - if ($Option{'verbose'} > 1){ - warn "Unstowing in $target\n"; - } - if ($Option{'verbose'} > 2){ - warn "--- path is $path\n"; - } - if (not -d $target) { - error("unstow_contents() called on a non-directory: $target"); - } - - opendir my $DIR, $target - or error("cannot read directory: $target"); - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - next NODE if ignore($node); - unstow_node_orig( - join_paths($path, $node), # path - join_paths($target, $node), # target - ); - } -} - -#===== SUBROUTINE =========================================================== -# Name : unstow_node_orig() -# Purpose : unstow the given node -# Parameters: $path => relative path to source node from the current directory -# : $target => relative path to symlink target from the current directory -# Returns : n/a -# Throws : fatal error if a conflict arises -# Comments : unstow_node() and unstow_contents() are mutually recursive -#============================================================================ -sub unstow_node_orig { - - my ($path, $target) = @_; - - if ($Option{'verbose'} > 1) { - warn "Unstowing $target\n"; - } - if ($Option{'verbose'} > 2) { - warn "--- path is $path\n"; - } - - # does the target exist - if (is_a_link($target)) { - if ($Option{'verbose'} > 2) { - warn("Evaluate existing link: $target\n"); - } - - # where is the link pointing? - my $old_source = read_a_link($target); - if (not $old_source) { - error("Could not read link: $target"); - } - - # does it point to a node under our stow directory? - my $old_path = find_stowed_path($target, $old_source); - if (not $old_path) { - # skip links not owned by stow - return; # XXX # - } - - # does the existing $target actually point to anything - if (-e $old_path) { - # does link points to the right place - if ($old_path eq $path) { - do_unlink($target); - } - elsif (override($target)) { - if ($Option{'verbose'} > 2) { - warn("--- overriding installation of: $target\n"); - } - do_unlink($target); - } - # else leave it alone - } - else { - if ($Option{'verbose'} > 2){ - warn "--- removing invalid link into a stow directory: $path\n"; - } - do_unlink($target); - } - } - elsif (-d $target) { - unstow_contents_orig($path, $target); - - # this action may have made the parent directory foldable - if (my $parent = foldable($target)) { - fold_tree($target,$parent); - } - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : unstow_contents() -# Purpose : unstow the contents of the given directory -# Parameters: $path => relative path to source dir from current directory -# : $target => relative path to symlink target from the current directory -# Returns : n/a -# Throws : a fatal error if directory cannot be read -# Comments : unstow_node() and unstow_contents() are mutually recursive -# : Here we traverse the target tree, rather than the source tree. -#============================================================================ -sub unstow_contents { - - my ($path, $target) = @_; - - # don't try to remove anything under a stow directory - if ($target eq $Stow_Path or -e "$target/.stow") { - return; - } - if ($Option{'verbose'} > 1){ - warn "Unstowing in $target\n"; - } - if ($Option{'verbose'} > 2){ - warn "--- path is $path\n"; - } - if (not -d $path) { - error("unstow_contents() called on a non-directory: $path"); - } - - opendir my $DIR, $path - or error("cannot read directory: $path"); - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - next NODE if ignore($node); - unstow_node( - join_paths($path, $node), # path - join_paths($target, $node), # target - ); - } - if (-d $target) { - cleanup_invalid_links($target); - } -} - -#===== SUBROUTINE =========================================================== -# Name : unstow_node() -# Purpose : unstow the given node -# Parameters: $path => relative path to source node from the current directory -# : $target => relative path to symlink target from the current directory -# Returns : n/a -# Throws : fatal error if a conflict arises -# Comments : unstow_node() and unstow_contents() are mutually recursive -#============================================================================ -sub unstow_node { - - my ($path, $target) = @_; - - if ($Option{'verbose'} > 1) { - warn "Unstowing $path\n"; - } - if ($Option{'verbose'} > 2) { - warn "--- target is $target\n"; - } - - # does the target exist - if (is_a_link($target)) { - if ($Option{'verbose'} > 2) { - warn("Evaluate existing link: $target\n"); - } - - # where is the link pointing? - my $old_source = read_a_link($target); - if (not $old_source) { - error("Could not read link: $target"); - } - - if ($old_source =~ m{\A/}) { - warn "ignoring a absolute symlink: $target => $old_source\n"; - return; # XXX # - } - - # does it point to a node under our stow directory? - my $old_path = find_stowed_path($target, $old_source); - if (not $old_path) { - conflict( - qq{existing target is not owned by stow: $target => $old_source} - ); - return; # XXX # - } - - # does the existing $target actually point to anything - if (-e $old_path) { - # does link points to the right place - if ($old_path eq $path) { - do_unlink($target); - } - - # XXX we quietly ignore links that are stowed to a different - # package. - - #elsif (defer($target)) { - # if ($Option{'verbose'} > 2) { - # warn("--- deferring to installation of: $target\n"); - # } - #} - #elsif (override($target)) { - # if ($Option{'verbose'} > 2) { - # warn("--- overriding installation of: $target\n"); - # } - # do_unlink($target); - #} - #else { - # conflict( - # q{existing target is stowed to a different package: %s => %s}, - # $target, - # $old_source - # ); - #} - } - else { - if ($Option{'verbose'} > 2){ - warn "--- removing invalid link into a stow directory: $path\n"; - } - do_unlink($target); - } - } - elsif (-e $target) { - if ($Option{'verbose'} > 2) { - warn("Evaluate existing node: $target\n"); - } - if (-d $target) { - unstow_contents($path, $target); - - # this action may have made the parent directory foldable - if (my $parent = foldable($target)) { - fold_tree($target,$parent); - } - } - else { - conflict( - qq{existing target is neither a link nor a directory: $target}, - ); - } - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : find_stowed_path() -# Purpose : determine if the given link points to a member of a -# : stowed package -# Parameters: $target => path to a symbolic link under current directory -# : $source => where that link points to -# Returns : relative path to stowed node (from the current directory) -# : or '' if link is not owned by stow -# Throws : fatal exception if link is unreadable -# Comments : allow for stow dir not being under target dir -# : we could put more logic under here for multiple stow dirs -#============================================================================ -sub find_stowed_path { - - my ($target, $source) = @_; - - # evaluate softlink relative to its target - my $path = join_paths(parent($target), $source); - - # search for .stow files - my $dir = ''; - for my $part (split m{/+}, $path) { - $dir = join_paths($dir,$part); - if (-f "$dir/.stow") { - return $path; - } - } - - # compare with $Stow_Path - my @path = split m{/+}, $path; - my @stow_path = split m{/+}, $Stow_Path; - - # strip off common prefixes - while ( @path && @stow_path ) { - if ( (shift @path) ne (shift @stow_path) ) { - return ''; - } - } - if (@stow_path) { - # @path is not under @stow_dir - return ''; - } - - return $path -} - -#===== SUBROUTINE ============================================================ -# Name : cleanup_invalid_links() -# Purpose : clean up invalid links that may block folding -# Parameters: $dir => path to directory to check -# Returns : n/a -# Throws : no exceptions -# Comments : removing files from a stowed package is probably a bad practice -# : so this kind of clean up is not _really_ stow's responsibility; -# : however, failing to clean up can block tree folding, so we'll do -# : it anyway -#============================================================================= -sub cleanup_invalid_links { - - my ($dir) = @_; - - if (not -d $dir) { - error("cleanup_invalid_links() called with a non-directory: $dir"); - } - - opendir my $DIR, $dir - or error("cannot read directory: $dir"); - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - - my $node_path = join_paths($dir,$node); - - if (-l $node_path and not exists $Link_Task_For{$node_path}) { - - # where is the link pointing? - # (dont use read_a_link here) - my $source = readlink($node_path); - if (not $source) { - error("Could not read link $node_path"); - } - - if ( - not -e join_paths($dir,$source) and # bad link - find_stowed_path($node_path,$source) # owned by stow - ){ - if ($Option{'verbose'} > 2) { - warn "--- removing stale link: $node_path => ", - join_paths($dir,$source), "\n"; - } - do_unlink($node_path); - } - } - } - return; -} - - -#===== SUBROUTINE =========================================================== -# Name : foldable() -# Purpose : determine if a tree can be folded -# Parameters: target => path to a directory -# Returns : path to the parent dir iff the tree can be safely folded -# Throws : n/a -# Comments : the path returned is relative to the parent of $target, -# : that is, it can be used as the source for a replacement symlink -#============================================================================ -sub foldable { - - my ($target) = @_; - - if ($Option{'verbose'} > 2){ - warn "--- Is $target foldable?\n"; - } - - opendir my $DIR, $target - or error(qq{Cannot read directory "$target" ($!)\n}); - my @listing = readdir $DIR; - closedir $DIR; - - my $parent = ''; - NODE: - for my $node (@listing) { - - next NODE if $node eq '.'; - next NODE if $node eq '..'; - - my $path = join_paths($target,$node); - - # skip nodes scheduled for removal - next NODE if not is_a_node($path); - - # if its not a link then we can't fold its parent - return '' if not is_a_link($path); - - # where is the link pointing? - my $source = read_a_link($path); - if (not $source) { - error("Could not read link $path"); - } - if ($parent eq '') { - $parent = parent($source) - } - elsif ($parent ne parent($source)) { - return ''; - } - } - return '' if not $parent; - - # if we get here then all nodes inside $target are links, and those links - # point to nodes inside the same directory. - - # chop of leading '..' to get the path to the common parent directory - # relative to the parent of our $target - $parent =~ s{\A\.\./}{}; - - # if the resulting path is owned by stow, we can fold it - if (find_stowed_path($target,$parent)) { - if ($Option{'verbose'} > 2){ - warn "--- $target is foldable\n"; - } - return $parent; - } - else { - return ''; - } -} - -#===== SUBROUTINE =========================================================== -# Name : fold_tree() -# Purpose : fold the given tree -# Parameters: $source => link to the folded tree source -# : $target => directory that we will replace with a link to $source -# Returns : n/a -# Throws : none -# Comments : only called iff foldable() is true so we can remove some checks -#============================================================================ -sub fold_tree { - - my ($target,$source) = @_; - - if ($Option{'verbose'} > 2){ - warn "--- Folding tree: $target => $source\n"; - } - - opendir my $DIR, $target - or error(qq{Cannot read directory "$target" ($!)\n}); - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - next NODE if not is_a_node(join_paths($target,$node)); - do_unlink(join_paths($target,$node)); - } - do_rmdir($target); - do_link($source, $target); - return; -} - - -#===== SUBROUTINE =========================================================== -# Name : conflict() -# Purpose : handle conflicts in stow operations -# Parameters: paths that conflict -# Returns : n/a -# Throws : fatal exception unless 'conflicts' option is set -# Comments : indicates what type of conflict it is -#============================================================================ -sub conflict { - my ( $format, @args ) = @_; - - my $message = sprintf($format, @args); - - if ($Option{'verbose'}) { - warn qq{CONFLICT: $message\n}; - } - push @Conflicts, qq{CONFLICT: $message\n}; - return; -} - -#===== SUBROUTINE ============================================================ -# Name : ignore -# Purpose : determine if the given path matches a regex in our ignore list -# Parameters: none -# Returns : Boolean -# Throws : no exceptions -# Comments : none -#============================================================================= -sub ignore { - - my ($path) = @_; - - for my $suffix (@{$Option{'ignore'}}) { - return 1 if $path =~ m/$suffix/; - } - return 0; -} - -#===== SUBROUTINE ============================================================ -# Name : defer -# Purpose : determine if the given path matches a regex in our defer list -# Parameters: none -# Returns : Boolean -# Throws : no exceptions -# Comments : none -#============================================================================= -sub defer { - - my ($path) = @_; - - for my $prefix (@{$Option{'defer'}}) { - return 1 if $path =~ m/$prefix/; - } - return 0; -} - -#===== SUBROUTINE ============================================================ -# Name : overide -# Purpose : determine if the given path matches a regex in our override list -# Parameters: none -# Returns : Boolean -# Throws : no exceptions -# Comments : none -#============================================================================= -sub override { - - my ($path) = @_; - - for my $regex (@{$Option{'override'}}) { - return 1 if $path =~ m/$regex/; - } - return 0; -} - -############################################################################## -# -# The following code provides the abstractions that allow us to defer operating -# on the filesystem until after all potential conflcits have been assessed. -# -############################################################################## - -#===== SUBROUTINE =========================================================== -# Name : process_tasks() -# Purpose : process each task in the @Tasks list -# Parameters: none -# Returns : n/a -# Throws : fatal error if @Tasks is corrupted or a task fails -# Comments : task involve either creating or deleting dirs and symlinks -# : an action is set to 'skip' if it is found to be redundant -#============================================================================ -sub process_tasks { - - if ($Option{'verbose'} > 1) { - warn "Processing tasks...\n" - } - - # strip out all tasks with a skip action - @Tasks = grep { $_->{'action'} ne 'skip' } @Tasks; - - if (not scalar @Tasks) { - warn "There are no outstanding operations to perform.\n"; - return; - } - if ($Option{'simulate'}) { - warn "WARNING: simulating so all operations are deferred.\n"; - return; - } - - for my $task (@Tasks) { - - if ( $task->{'action'} eq 'create' ) { - if ( $task->{'type'} eq 'dir' ) { - mkdir($task->{'path'}, 0777) - or error(qq(Could not create directory: $task->{'path'})); - } - elsif ( $task->{'type'} eq 'link' ) { - symlink $task->{'source'}, $task->{'path'} - or error( - q(Could not create symlink: %s => %s), - $task->{'path'}, - $task->{'source'} - ); - } - else { - internal_error(qq(bad task type: $task->{'type'})); - } - } - elsif ( $task->{'action'} eq 'remove' ) { - if ( $task->{'type'} eq 'dir' ) { - rmdir $task->{'path'} - or error(qq(Could not remove directory: $task->{'path'})); - } - elsif ( $task->{'type'} eq 'link' ) { - unlink $task->{'path'} - or error(qq(Could not remove link: $task->{'path'})); - } - else { - internal_error(qq(bad task type: $task->{'type'})); - } - } - else { - internal_error(qq(bad task action: $task->{'action'})); - } - } - if ($Option{'verbose'} > 1) { - warn "Processing tasks...done\n" - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : is_a_link() -# Purpose : is the given path a current or planned link -# Parameters: none -# Returns : Boolean -# Throws : none -# Comments : returns false if an existing link is scheduled for removal -# : and true if a non-exsitent link is scheduled for creation -#============================================================================ -sub is_a_link { - my ($path) = @_; - - - if ( exists $Link_Task_For{$path} ) { - - my $action = $Link_Task_For{$path}->{'action'}; - - if ($action eq 'remove') { - return 0; - } - elsif ($action eq 'create') { - return 1; - } - else { - internal_error("bad task action: $action"); - } - } - elsif (-l $path) { - # check if any of its parent are links scheduled for removal - # (need this for edge case during unfolding) - my $parent = ''; - for my $part (split m{/+}, $path ) { - $parent = join_paths($parent,$part); - if ( exists $Link_Task_For{$parent} ) { - if ($Link_Task_For{$parent}->{'action'} eq 'remove') { - return 0; - } - } - } - return 1; - } - return 0; -} - - -#===== SUBROUTINE =========================================================== -# Name : is_a_dir() -# Purpose : is the given path a current or planned directory -# Parameters: none -# Returns : Boolean -# Throws : none -# Comments : returns false if an existing directory is scheduled for removal -# : and true if a non-existent directory is scheduled for creation -# : we also need to be sure we are not just following a link -#============================================================================ -sub is_a_dir { - my ($path) = @_; - - if ( exists $Dir_Task_For{$path} ) { - my $action = $Dir_Task_For{$path}->{'action'}; - if ($action eq 'remove') { - return 0; - } - elsif ($action eq 'create') { - return 1; - } - else { - internal_error("bad task action: $action"); - } - } - - # are we really following a link that is scheduled for removal - my $prefix = ''; - for my $part (split m{/+}, $path) { - $prefix = join_paths($prefix,$part); - if (exists $Link_Task_For{$prefix} and - $Link_Task_For{$prefix}->{'action'} eq 'remove') { - return 0; - } - } - - if (-d $path) { - return 1; - } - return 0; -} - -#===== SUBROUTINE =========================================================== -# Name : is_a_node() -# Purpose : is the given path a current or planned node -# Parameters: none -# Returns : Boolean -# Throws : none -# Comments : returns false if an existing node is scheduled for removal -# : true if a non-existent node is scheduled for creation -# : we also need to be sure we are not just following a link -#============================================================================ -sub is_a_node { - my ($path) = @_; - - if ( exists $Link_Task_For{$path} ) { - - my $action = $Link_Task_For{$path}->{'action'}; - - if ($action eq 'remove') { - return 0; - } - elsif ($action eq 'create') { - return 1; - } - else { - internal_error("bad task action: $action"); - } - } - - if ( exists $Dir_Task_For{$path} ) { - - my $action = $Dir_Task_For{$path}->{'action'}; - - if ($action eq 'remove') { - return 0; - } - elsif ($action eq 'create') { - return 1; - } - else { - internal_error("bad task action: $action"); - } - } - - # are we really following a link that is scheduled for removal - my $prefix = ''; - for my $part (split m{/+}, $path) { - $prefix = join_paths($prefix,$part); - if ( exists $Link_Task_For{$prefix} and - $Link_Task_For{$prefix}->{'action'} eq 'remove') { - return 0; - } - } - - if (-e $path) { - return 1; - } - return 0; -} - -#===== SUBROUTINE =========================================================== -# Name : read_a_link() -# Purpose : return the source of a current or planned link -# Parameters: $path => path to the link target -# Returns : a string -# Throws : fatal exception if the given path is not a current or planned -# : link -# Comments : none -#============================================================================ -sub read_a_link { - - my ($path) = @_; - - if ( exists $Link_Task_For{$path} ) { - my $action = $Link_Task_For{$path}->{'action'}; - - if ($action eq 'create') { - return $Link_Task_For{$path}->{'source'}; - } - elsif ($action eq 'remove') { - internal_error( - "read_a_link() passed a path that is scheduled for removal: $path" - ); - } - else { - internal_error("bad task action: $action"); - } - } - elsif (-l $path) { - return readlink $path - or error("Could not read link: $path"); - } - internal_error("read_a_link() passed a non link path: $path\n"); -} - -#===== SUBROUTINE =========================================================== -# Name : do_link() -# Purpose : wrap 'link' operation for later processing -# Parameters: file => the file to link -# Returns : n/a -# Throws : error if this clashes with an existing planned operation -# Comments : cleans up operations that undo previous operations -#============================================================================ -sub do_link { - - my ( $oldfile, $newfile ) = @_; - - if ( exists $Dir_Task_For{$newfile} ) { - - my $task_ref = $Dir_Task_For{$newfile}; - - if ( $task_ref->{'action'} eq 'create' ) { - if ($task_ref->{'type'} eq 'dir') { - internal_error( - "new link (%s => %s ) clashes with planned new directory", - $newfile, - $oldfile, - ); - } - } - elsif ( $task_ref->{'action'} eq 'remove' ) { - # we may need to remove a directory before creating a link so continue; - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - if ( exists $Link_Task_For{$newfile} ) { - - my $task_ref = $Link_Task_For{$newfile}; - - if ( $task_ref->{'action'} eq 'create' ) { - if ( $task_ref->{'source'} ne $oldfile ) { - internal_error( - "new link clashes with planned new link: %s => %s", - $task_ref->{'path'}, - $task_ref->{'source'}, - ) - } - else { - if ($Option{'verbose'}) { - warn "LINK: $newfile => $oldfile (duplicates previous action)\n"; - } - return; - } - } - elsif ( $task_ref->{'action'} eq 'remove' ) { - if ( $task_ref->{'source'} eq $oldfile ) { - # no need to remove a link we are going to recreate - if ($Option{'verbose'}) { - warn "LINK: $newfile => $oldfile (reverts previous action)\n"; - } - $Link_Task_For{$newfile}->{'action'} = 'skip'; - delete $Link_Task_For{$newfile}; - return; - } - # we may need to remove a link to replace it so continue - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - # creating a new link - if ($Option{'verbose'}) { - warn "LINK: $newfile => $oldfile\n"; - } - my $task = { - action => 'create', - type => 'link', - path => $newfile, - source => $oldfile, - }; - push @Tasks, $task; - $Link_Task_For{$newfile} = $task; - - return; -} - -#===== SUBROUTINE =========================================================== -# Name : do_unlink() -# Purpose : wrap 'unlink' operation for later processing -# Parameters: $file => the file to unlink -# Returns : n/a -# Throws : error if this clashes with an existing planned operation -# Comments : will remove an existing planned link -#============================================================================ -sub do_unlink { - - my ($file) = @_; - - if (exists $Link_Task_For{$file} ) { - my $task_ref = $Link_Task_For{$file}; - if ( $task_ref->{'action'} eq 'remove' ) { - if ($Option{'verbose'}) { - warn "UNLINK: $file (duplicates previous action)\n"; - } - return; - } - elsif ( $task_ref->{'action'} eq 'create' ) { - # do need to create a link then remove it - if ($Option{'verbose'}) { - warn "UNLINK: $file (reverts previous action)\n"; - } - $Link_Task_For{$file}->{'action'} = 'skip'; - delete $Link_Task_For{$file}; - return; - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - if ( exists $Dir_Task_For{$file} and $Dir_Task_For{$file} eq 'create' ) { - internal_error( - "new unlink operation clashes with planned operation: %s dir %s", - $Dir_Task_For{$file}->{'action'}, - $file - ); - } - - # remove the link - if ($Option{'verbose'}) { - #warn "UNLINK: $file (".(caller())[2].")\n"; - warn "UNLINK: $file\n"; - } - - my $source = readlink $file or error("could not readlink $file"); - - my $task = { - action => 'remove', - type => 'link', - path => $file, - source => $source, - }; - push @Tasks, $task; - $Link_Task_For{$file} = $task; - - return; -} - -#===== SUBROUTINE =========================================================== -# Name : do_mkdir() -# Purpose : wrap 'mkdir' operation -# Parameters: $dir => the directory to remove -# Returns : n/a -# Throws : fatal exception if operation fails -# Comments : outputs a message if 'verbose' option is set -# : does not perform operation if 'simulate' option is set -# Comments : cleans up operations that undo previous operations -#============================================================================ -sub do_mkdir { - my ($dir) = @_; - - if ( exists $Link_Task_For{$dir} ) { - - my $task_ref = $Link_Task_For{$dir}; - - if ($task_ref->{'action'} eq 'create') { - internal_error( - "new dir clashes with planned new link (%s => %s)", - $task_ref->{'path'}, - $task_ref->{'source'}, - ); - } - elsif ($task_ref->{'action'} eq 'remove') { - # may need to remove a link before creating a directory so continue - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - if ( exists $Dir_Task_For{$dir} ) { - - my $task_ref = $Dir_Task_For{$dir}; - - if ($task_ref->{'action'} eq 'create') { - if ($Option{'verbose'}) { - warn "MKDIR: $dir (duplicates previous action)\n"; - } - return; - } - elsif ($task_ref->{'action'} eq 'remove') { - if ($Option{'verbose'}) { - warn "MKDIR: $dir (reverts previous action)\n"; - } - $Dir_Task_For{$dir}->{'action'} = 'skip'; - delete $Dir_Task_For{$dir}; - return; - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - if ($Option{'verbose'}) { - warn "MKDIR: $dir\n"; - } - my $task = { - action => 'create', - type => 'dir', - path => $dir, - source => undef, - }; - push @Tasks, $task; - $Dir_Task_For{$dir} = $task; - - return; -} - -#===== SUBROUTINE =========================================================== -# Name : do_rmdir() -# Purpose : wrap 'rmdir' operation -# Parameters: $dir => the directory to remove -# Returns : n/a -# Throws : fatal exception if operation fails -# Comments : outputs a message if 'verbose' option is set -# : does not perform operation if 'simulate' option is set -#============================================================================ -sub do_rmdir { - my ($dir) = @_; - - if (exists $Link_Task_For{$dir} ) { - my $task_ref = $Link_Task_For{$dir}; - internal_error( - "rmdir clashes with planned operation: %s link %s => %s", - $task_ref->{'action'}, - $task_ref->{'path'}, - $task_ref->{'source'} - ); - } - - if (exists $Dir_Task_For{$dir} ) { - my $task_ref = $Link_Task_For{$dir}; - - if ($task_ref->{'action'} eq 'remove' ) { - if ($Option{'verbose'}) { - warn "RMDIR $dir (duplicates previous action)\n"; - } - return; - } - elsif ($task_ref->{'action'} eq 'create' ) { - if ($Option{'verbose'}) { - warn "MKDIR $dir (reverts previous action)\n"; - } - $Link_Task_For{$dir}->{'action'} = 'skip'; - delete $Link_Task_For{$dir}; - return; - } - else { - internal_error("bad task action: $task_ref->{'action'}"); - } - } - - if ($Option{'verbose'}) { - warn "RMDIR $dir\n"; - } - my $task = { - action => 'remove', - type => 'dir', - path => $dir, - source => '', - }; - push @Tasks, $task; - $Dir_Task_For{$dir} = $task; - - return; -} - -############################################################################# -# -# General Utilities: nothing stow specific here. -# -############################################################################# - -#===== SUBROUTINE ============================================================ -# Name : strip_quotes -# Purpose : remove matching outer quotes from the given string -# Parameters: none -# Returns : n/a -# Throws : no exceptions -# Comments : none -#============================================================================= -sub strip_quotes { - - my ($string) = @_; - - if ($string =~ m{\A\s*'(.*)'\s*\z}) { - return $1; - } - elsif ($string =~ m{\A\s*"(.*)"\s*\z}) { - return $1 - } - return $string; -} - -#===== SUBROUTINE =========================================================== -# Name : relative_path() -# Purpose : find the relative path between two given paths -# Parameters: path1 => a directory path -# : path2 => a directory path -# Returns : path2 relative to path1 -# Throws : n/a -# Comments : only used once by main interactive routine -# : factored out for testing -#============================================================================ -sub relative_path { - - my ($path1, $path2) = @_; - - my (@path1) = split m{/+}, $path1; - my (@path2) = split m{/+}, $path2; - - # drop common prefixes until we find a difference - PREFIX: - while ( @path1 && @path2 ) { - last PREFIX if $path1[0] ne $path2[0]; - shift @path1; - shift @path2; - } - - # prepend one '..' to $path2 for each component of $path1 - while ( shift @path1 ) { - unshift @path2, '..'; - } - - return join_paths(@path2); -} - -#===== SUBROUTINE =========================================================== -# Name : join_path() -# Purpose : concatenates given paths -# Parameters: path1, path2, ... => paths -# Returns : concatenation of given paths -# Throws : n/a -# Comments : factors out redundant path elements: -# : '//' => '/' and 'a/b/../c' => 'a/c' -#============================================================================ -sub join_paths { - - my @paths = @_; - - # weed out empty components and concatenate - my $result = join '/', grep {!/\A\z/} @paths; - - # factor out back references and remove redundant /'s) - my @result = (); - PART: - for my $part ( split m{/+}, $result) { - next PART if $part eq '.'; - if (@result && $part eq '..' && $result[-1] ne '..') { - pop @result; - } - else { - push @result, $part; - } - } - - return join '/', @result; -} - -#===== SUBROUTINE =========================================================== -# Name : parent -# Purpose : find the parent of the given path -# Parameters: @path => components of the path -# Returns : returns a path string -# Throws : n/a -# Comments : allows you to send multiple chunks of the path -# : (this feature is currently not used) -#============================================================================ -sub parent { - my @path = @_; - my $path = join '/', @_; - my @elts = split m{/+}, $path; - pop @elts; - return join '/', @elts; -} - -#===== SUBROUTINE =========================================================== -# Name : internal_error() -# Purpose : output internal error message in a consistent form and die -# Parameters: $message => error message to output -# Returns : n/a -# Throws : n/a -# Comments : none -#============================================================================ -sub internal_error { - my ($format,@args) = @_; - die "$ProgramName: INTERNAL ERROR: ".sprintf($format,@args)."\n", - "This _is_ a bug. Please submit a bug report so we can fix it:-)\n"; -} - -#===== SUBROUTINE =========================================================== -# Name : error() -# Purpose : output error message in a consistent form and die -# Parameters: $message => error message to output -# Returns : n/a -# Throws : n/a -# Comments : none -#============================================================================ -sub error { - my ($format,@args) = @_; - die "$ProgramName: ERROR: ".sprintf($format,@args)." ($!)\n"; -} - -#===== SUBROUTINE =========================================================== -# Name : version() -# Purpose : print this programs verison and exit -# Parameters: none -# Returns : n/a -# Throws : n/a -# Comments : none -#============================================================================ -sub version { - print "$ProgramName (GNU Stow) version $Version\n"; - exit 0; -} - -1; # return true so we can load this script as a module during unit testing - -# Local variables: -# mode: perl -# End: -# vim: ft=perl diff --git a/stow.info b/stow.info deleted file mode 100644 index 7b6b9de..0000000 --- a/stow.info +++ /dev/null @@ -1,1335 +0,0 @@ -This is stow.info, produced by makeinfo version 4.12 from stow.texi. - -INFO-DIR-SECTION Administration -START-INFO-DIR-ENTRY -* Stow: (stow). GNU Stow. -END-INFO-DIR-ENTRY - - This file describes GNU Stow version 2.0.2, a program for managing -the installation of software packages. - - Software and documentation Copyright (C) 1993, 1994, 1995, 1996 by -Bob Glickstein . Copyright (C) 2000, 2001 -Guillaume Morin . Copyright (C) 2007 Kahlil (Kal) -Hodgson . - - Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice are -preserved on all copies. - - Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided also -that the section entitled "GNU General Public License" is included with -the modified manual, and provided that the entire resulting derived -work is distributed under the terms of a permission notice identical to -this one. - - Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Free Software Foundation. - - -File: stow.info, Node: Top, Next: Introduction, Prev: (dir), Up: (dir) - - This manual describes GNU Stow 2.0.2, a program for managing the -installation of software packages. - -* Menu: - -* Introduction:: Description of Stow. -* Terminology:: Terms used by this manual. -* Invoking Stow:: Option summary. -* Installing Packages:: Using Stow to install. -* Deleting Packages:: Using Stow to uninstall. -* Conflicts:: When Stow can't stow. -* Deferred Operation:: Using two passes to stow. -* Mixing Operations:: Multiple actions per invocation. -* Multiple Stow Directories:: Further segregating software. -* Target Maintenance:: Cleaning up mistakes. -* Resource Files:: Setting default command line options. -* Compile-time vs Install-time:: Faking out `make install'. -* Bootstrapping:: When stow and perl are not yet stowed. -* Reporting Bugs:: How, what, where, and when to report. -* Known Bugs:: Don't report any of these. -* GNU General Public License:: Copying terms. -* Index:: Index of concepts. - - --- The Detailed Node Listing --- - -Compile-time and install-time - -* GNU Emacs:: -* Other FSF Software:: -* Cygnus Software:: -* Perl and Perl 5 Modules:: - - -File: stow.info, Node: Introduction, Next: Terminology, Prev: Top, Up: Top - -1 Introduction -************** - -Stow is a tool for managing the installation of multiple software -packages in the same run-time directory tree. One historical difficulty -of this task has been the need to administer, upgrade, install, and -remove files in independent packages without confusing them with other -files sharing the same file system space. For instance, it is common to -install Perl and Emacs in `/usr/local'. When one does so, one winds up -with the following files(1) in `/usr/local/man/man1': - - a2p.1 - ctags.1 - emacs.1 - etags.1 - h2ph.1 - perl.1 - s2p.1 - -Now suppose it's time to uninstall Perl. Which man pages get removed? -Obviously `perl.1' is one of them, but it should not be the -administrator's responsibility to memorize the ownership of individual -files by separate packages. - - The approach used by Stow is to install each package into its own -tree, then use symbolic links to make it appear as though the files are -installed in the common tree. Administration can be performed in the -package's private tree in isolation from clutter from other packages. -Stow can then be used to update the symbolic links. The structure of -each private tree should reflect the desired structure in the common -tree; i.e. (in the typical case) there should be a `bin' directory -containing executables, a `man/man1' directory containing section 1 man -pages, and so on. - - Stow was inspired by Carnegie Mellon's Depot program, but is -substantially simpler and safer. Whereas Depot required database files -to keep things in sync, Stow stores no extra state between runs, so -there's no danger (as there was in Depot) of mangling directories when -file hierarchies don't match the database. Also unlike Depot, Stow will -never delete any files, directories, or links that appear in a Stow -directory (e.g., `/usr/local/stow/emacs'), so it's always possible to -rebuild the target tree (e.g., `/usr/local'). - - For information about the latest version of Stow, you can refer to -http://www.gnu.org/software/stow/. - - ---------- Footnotes ---------- - - (1) As of Perl 4.036 and Emacs 19.22. - - -File: stow.info, Node: Terminology, Next: Invoking Stow, Prev: Introduction, Up: Top - -2 Terminology -************* - - A "package" is a related collection of files and directories that -you wish to administer as a unit -- e.g., Perl or Emacs -- and that -needs to be installed in a particular directory structure -- e.g., with -`bin', `lib', and `man' subdirectories. - - A "target directory" is the root of a tree in which one or more -packages wish to _appear_ to be installed. A common, but by no means -the only such location is `/usr/local'. The examples in this manual -will use `/usr/local' as the target directory. - - A "stow directory" is the root of a tree containing separate -packages in private subtrees. When Stow runs, it uses the current -directory as the default stow directory. The examples in this manual -will use `/usr/local/stow' as the stow directory, so that individual -packages will be, for example, `/usr/local/stow/perl' and -`/usr/local/stow/emacs'. - - An "installation image" is the layout of files and directories -required by a package, relative to the target directory. Thus, the -installation image for Perl includes: a `bin' directory containing -`perl' and `a2p' (among others); an `info' directory containing Texinfo -documentation; a `lib/perl' directory containing Perl libraries; and a -`man/man1' directory containing man pages. - - A "package directory" is the root of a tree containing the -installation image for a particular package. Each package directory -must reside in a stow directory -- e.g., the package directory -`/usr/local/stow/perl' must reside in the stow directory -`/usr/local/stow'. The "name" of a package is the name of its -directory within the stow directory -- e.g., `perl'. - - Thus, the Perl executable might reside in -`/usr/local/stow/perl/bin/perl', where `/usr/local' is the target -directory, `/usr/local/stow' is the stow directory, -`/usr/local/stow/perl' is the package directory, and `bin/perl' within -is part of the installation image. - - A "symlink" is a symbolic link. A symlink can be "relative" or -"absolute". An absolute symlink names a full path; that is, one -starting from `/'. A relative symlink names a relative path; that is, -one not starting from `/'. The target of a relative symlink is -computed starting from the symlink's own directory. Stow only creates -relative symlinks. - - -File: stow.info, Node: Invoking Stow, Next: Installing Packages, Prev: Terminology, Up: Top - -3 Invoking Stow -*************** - -The syntax of the `stow' command is: - - stow [OPTIONS] [ACTION FLAG] PACKAGE ... - -Each PACKAGE is the name of a package (e.g., `perl') in the stow -directory that we wish to install into (or delete from) the target -directory. The default action is to install the given packages, -although alternate actions may be specified by preceding the package -name(s) with an ACTION FLAG. Unless otherwise specified, the stow -directory is assumed to be the current directory and the target -directory is assumed to be the parent of the current directory, so it -is typical to execute `stow' from the directory `/usr/local/stow'. - -The following options are supported: - -`-d DIR' -`--dir=DIR' - Set the stow directory to DIR instead of the current directory. - This also has the effect of making the default target directory be - the parent of DIR. - -`-t DIR' -`--target=DIR' - Set the target directory to DIR instead of the parent of the stow - directory. - -`--ignore=''' - This (repeatable) option lets you suppress acting on files that - match the given perl regular expression. For example, using the - options - - --ignore='~' --ignore='\.#.*' - - will cause stow to ignore emacs and CVS backup files. - - Note that the regular expression is anchored to the end of the - filename, because this is what you will want to do most of the - time. - -`--defer=''' - This (repeatable) option lets you defer stowing a file matching - the given regular expression, if that file is already stowed by - another package. For example, the following options - - --defer='man' --defer='info' - - will cause stow to skip over pre-existing man and info pages. - - Equivalently, you could use -defer='man|info' since the argument - is just a Perl regex. - - Note that the regular expression is anchored to the beginning of - the path relative to the target directory, because this is what - you will want to do most of the time. - -`--override=''' - This (repeatable) option forces any file matching the regular - expression to be stowed, even if the file is already stowed to - another package. For example, the following options - - --override='man' --override='info' - - will permit stow to overwrite links that point to pre-existing man - and info pages that are owned by stow and would otherwise cause a - conflict. - - The regular expression is anchored to the beginning of the path - relative to the target directory, because this is what you will - want to do most of the time. - -`-n' -`--no' -`--simulate' - Do not perform any operations that modify the file system; in - combination with `-v' can be used to merely show what would happen. - -`-v' -`--verbose[=N]' - Send verbose output to standard error describing what Stow is - doing. Verbosity levels are 0, 1, 2, and 3; 0 is the default. - Using `-v' or `--verbose' increases the verbosity by one; using - `--verbose=N' sets it to N. - -`-p' -`--compat' - Scan the whole target tree when unstowing. By default, only - directories specified in the "installation image" are scanned - during an unstow operation. Scanning the whole tree can be - prohibitive if your target tree is very large. This option - restores the legacy behaviour; however, the `--badlinks' option - may be a better way of ensuring that your installation does not - have any dangling symlinks. - -`-V' -`--version' - Show Stow version number, and exit. - -`-h' -`--help' - Show Stow command syntax, and exit. - - The following ACTION FLAGS are supported: - -`-D' -`--delete' - Delete (unstow) the package name(s) that follow this option from - the "target directory". This option may be repeated any number of - times. - -`-R' -`--restow' - Restow (first unstow, then stow again) the package names that - follow this option. This is useful for pruning obsolete symlinks - from the target tree after updating the software in a package. - This option may be repeated any number of times. - -`-S' - -`--stow' - explictly stow the package name(s) that follow this option. May - be omitted if you are not using the `-D' or `-R' options in the - same invocation. See *Note Mixing Operations::, for details of - when you might like to use this feature. This option may be - repeated any number of times. - - The following options are useful for cleaning up your target tree: - -`-b' -`--badlinks' - Checks target directory for bogus symbolic links. That is, links - that point to non-existent files. - -`-a' -`--aliens' - Checks for files in the target directory that are not symbolic - links. The target directory should be managed by stow alone, - except for directories that contain a `.stow' file. - -`-l' -`--list' - Will display the target package for every symbolic link in the - stow target directory. The following options are deprecated: - - The following options are deprecated as of Stow Version 2: -`-c' -`--conflicts' - Print any conflicts that are encountered. This option implies - `-n', and is used to search for all conflicts that might arise - from an actual Stow operation. - - This option is deprecated as conflicts are now printed by default - and no operations will be performed if any conflicts are detected. - - *note Resource Files:: for a way to set default values for any of -these options - - -File: stow.info, Node: Installing Packages, Next: Deleting Packages, Prev: Invoking Stow, Up: Top - -4 Installing Packages -********************* - -The default action of Stow is to install a package. This means creating -symlinks in the target tree that point into the package tree. Stow -attempts to do this with as few symlinks as possible; in other words, if -Stow can create a single symlink that points to an entire subtree within -the package tree, it will choose to do that rather than create a -directory in the target tree and populate it with symlinks. - - For example, suppose that no packages have yet been installed in -`/usr/local'; it's completely empty (except for the `stow' -subdirectory, of course). Now suppose the Perl package is installed. -Recall that it includes the following directories in its installation -image: `bin'; `info'; `lib/perl'; `man/man1'. Rather than creating -the directory `/usr/local/bin' and populating it with symlinks to -`../stow/perl/bin/perl' and `../stow/perl/bin/a2p' (and so on), Stow -will create a single symlink, `/usr/local/bin', which points to -`stow/perl/bin'. In this way, it still works to refer to -`/usr/local/bin/perl' and `/usr/local/bin/a2p', and fewer symlinks have -been created. This is called "tree folding", since an entire subtree -is "folded" into a single symlink. - - To complete this example, Stow will also create the symlink -`/usr/local/info' pointing to `stow/perl/info'; the symlink -`/usr/local/lib' pointing to `stow/perl/lib'; and the symlink -`/usr/local/man' pointing to `stow/perl/man'. - - Now suppose that instead of installing the Perl package into an empty -target tree, the target tree is not empty to begin with. Instead, it -contains several files and directories installed under a different -system-administration philosophy. In particular, `/usr/local/bin' -already exists and is a directory, as are `/usr/local/lib' and -`/usr/local/man/man1'. In this case, Stow will descend into -`/usr/local/bin' and create symlinks to `../stow/perl/bin/perl' and -`../stow/perl/bin/a2p' (etc.), and it will descend into -`/usr/local/lib' and create the tree-folding symlink `perl' pointing to -`../stow/perl/lib/perl', and so on. As a rule, Stow only descends as -far as necessary into the target tree when it can create a tree-folding -symlink. - - The time often comes when a tree-folding symlink has to be undone -because another package uses one or more of the folded subdirectories in -its installation image. This operation is called "splitting open" or -"unfolding" a folded tree. It involves removing the original symlink -from the target tree, creating a true directory in its place, and then -populating the new directory with symlinks to the newly-installed -package _and_ to the old package that used the old symlink. For -example, suppose that after installing Perl into an empty `/usr/local', -we wish to install Emacs. Emacs's installation image includes a `bin' -directory containing the `emacs' and `etags' executables, among others. -Stow must make these files appear to be installed in `/usr/local/bin', -but presently `/usr/local/bin' is a symlink to `stow/perl/bin'. Stow -therefore takes the following steps: the symlink `/usr/local/bin' is -deleted; the directory `/usr/local/bin' is created; links are made from -`/usr/local/bin' to `../stow/emacs/bin/emacs' and -`../stow/emacs/bin/etags'; and links are made from `/usr/local/bin' to -`../stow/perl/bin/perl' and `../stow/perl/bin/a2p'. - - When splitting open a folded tree, Stow makes sure that the symlink -it is about to remove points inside a valid package in the current stow -directory. _Stow will never delete anything that it doesn't own_. -Stow "owns" everything living in the target tree that points into a -package in the stow directory. Anything Stow owns, it can recompute if -lost: symlinks that point into a package in the stow directory, or -directories that only contain sysmlinks that stow "owns". Note that -by this definition, Stow doesn't "own" anything _in_ the stow directory -or in any of the packages. - - If Stow needs to create a directory or a symlink in the target tree -and it cannot because that name is already in use and is not owned by -Stow, then a "conflict" has arisen. *Note Conflicts::. - - -File: stow.info, Node: Deleting Packages, Next: Conflicts, Prev: Installing Packages, Up: Top - -5 Deleting Packages -******************* - -When the `-D' option is given, the action of Stow is to delete a -package from the target tree. Note that Stow will not delete anything -it doesn't "own". Deleting a package does _not_ mean removing it from -the stow directory or discarding the package tree. - - To delete a package, Stow recursively scans the target tree, -skipping over any directory that is not included in the installation -image.(1) For example, if the target directory is `/usr/local' and the -installation image for the package being deleted has only a `bin' -directory and a `man' directory at the top level, then we only scan -`/usr/local/bin' and `/usr/local/bin/man', and not `/usr/local/lib' or -`/usr/local/share', or for that matter `/usr/local/stow'. Any symlink -it finds that points into the package being deleted is removed. Any -directory that contained only symlinks to the package being deleted is -removed. Any directory that, after removing symlinks and empty -subdirectories, contains only symlinks to a single other package, is -considered to be a previously "folded" tree that was "split open." Stow -will re-fold the tree by removing the symlinks to the surviving package, -removing the directory, then linking the directory back to the surviving -package. - - ---------- Footnotes ---------- - - (1) This approach was introduced in version 2 of GNU Stow. -Previously, the whole target tree was scanned and stow directories were -explicitly omitted. This became problematic when dealing with very -large installations. The only situation where this is useful is if you -accidentally delete a directory in the package tree, leaving you with a -whole bunch of dangling links. Note that you can enable the old -approach with the `-p' option. Alternatively, you can use the -`--badlinks' option get stow to search for dangling links in your -target tree and remove the offenders manually. - - -File: stow.info, Node: Conflicts, Next: Deferred Operation, Prev: Deleting Packages, Up: Top - -5.1 Conflicts -============= - -If, during installation, a file or symlink exists in the target tree and -has the same name as something Stow needs to create, and if the -existing name is not a folded tree that can be split open, then a -"conflict" has arisen. A conflict also occurs if a directory exists -where Stow needs to place a symlink to a non-directory. On the other -hand, if the existing name is merely a symlink that already points -where Stow needs it to, then no conflict has occurred. (Thus it is -harmless to install a package that has already been installed.) - - A conflict causes Stow to exit immediately and print a warning -(unless `-c' is given), even if that means aborting an installation in -mid-package. - - When running Stow with the `-n' or `-c' options, no actual -filesystem-modifying operations take place. Thus if a folded tree would -have been split open, but instead was left in place because `-n' or -`-c' was used, then Stow will report a "false conflict", since the -directory that Stow was expecting to populate has remained an -un-populatable symlink. - - -File: stow.info, Node: Deferred Operation, Next: Mixing Operations, Prev: Conflicts, Up: Top - -6 Deferred Operation -******************** - -For complex packages, scanning the stow and target trees in tandem, and -deciding whether to make directories or links, split-open or fold -directories, can actually take a long time (a number of seconds). -Moreover, an accurate analysis of potential conflicts, requires us to -take in to account all of these operations. - - Accidentally stowing a package that will result in a conflict - - -File: stow.info, Node: Mixing Operations, Next: Multiple Stow Directories, Prev: Deferred Operation, Up: Top - -7 Mixing Operations -******************* - -Since Version 2.0, multiple distinct actions can be specified in a -single invocation of GNU Stow. For example, to update an installation -of Emacs from version 21.3 to 21.4a you can now do the following: - - stow -D emacs-21.3 -S emacs-21.4a - -which will replace emacs-21.3 with emacs-21.4a using a single -invocation. - - This is much faster and cleaner than performing two separate -invocations of stow, because redundant folding/unfolding operations can -be factored out. In addition, all the operations are calculated and -merged before being executed *note Deferred Operation::, so the amount -of of time in which GNU Emacs is unavailable is minimised. - - You can mix and match any number of actions, for example, - - stow -S pkg1 pkg2 -D pkg3 pkg4 -S pkg5 -R pkg6 - -will unstow pkg3, pkg4 and pkg6, then stow pkg1, pkg2, pkg5 and pkg6. - - -File: stow.info, Node: Multiple Stow Directories, Next: Target Maintenance, Prev: Mixing Operations, Up: Top - -8 Multiple Stow Directories -*************************** - -If there are two or more system administrators who wish to maintain -software separately, or if there is any other reason to want two or more -stow directories, it can be done by creating a file named `.stow' in -each stow directory. The presence of `/usr/local/foo/.stow' informs -Stow that, though `foo' is not the current stow directory, and though -it is a subdirectory of the target directory, nevertheless it is _a_ -stow directory and as such Stow doesn't "own" anything in it (*note -Installing Packages::). This will protect the contents of `foo' from a -`stow -D', for instance. - - XXX is this still true? XXX - - When multiple stow directories share a target tree, the effectiveness -of Stow is reduced. If a tree-folding symlink is encountered and needs -to be split open during an installation, but the symlink points into -the wrong stow directory, Stow will report a conflict rather than split -open the tree (because it doesn't consider itself to own the symlink, -and thus cannot remove it). - - -File: stow.info, Node: Target Maintenance, Next: Resource Files, Prev: Multiple Stow Directories, Up: Top - -9 Target Maintenance -******************** - -From time to time you will need to clean up your target tree. Stow -includes three operational modes that performs checks that would -generally be too expensive to performed during normal stow execution. - - I've added a -l option to chkstow which will give you a listing of -every package name that has already been stowed should be able to diff -this with your directory listing - - bash cd build/scripts diff <(../bin/chkstow -l) <(ls -1) - - -File: stow.info, Node: Resource Files, Next: Compile-time vs Install-time, Prev: Target Maintenance, Up: Top - -10 Resource Files -***************** - -Default command line options may be set in `.stowrc' (current -directory) or `~/.stowrc' (home directory). These are parsed in that -order, and effectively prepended to you command line. This feature can -be used for some interesting effects. - - For example, suppose your site uses more than one stow directory, -perhaps in order to share around responsibilities with a number of -systems administrators. One of the administrators might have the -following in there `~/.stowrc' file: - - --dir=/usr/local/stow2 - --target=/usr/local - --ignore='~' - --ignore='^CVS' - - so that the `stow' command will default to operating on the -`/usr/local/stow2' directory, with `/usr/local' as the target, and -ignoring vi backup files and CVS directories. - - If you had a stow directory `/usr/local/stow/perl-extras' that was -only used for Perl modules, then you might place the following in -`/usr/local/stow/perl-extras/.stowrc': - - --dir=/usr/local/stow/perl-extras - --target=/usr/local - --override=bin - --override=man - --ignore='perllocal\.pod' - --ignore='\.packlist' - --ignore='\.bs' - - so that the when your are in the `/usr/local/stow/perl-extras' -directory, `stow' will regard any subdirectories as stow packages, with -`/usr/local' as the target (rather than the immediate parent directoy -`/usr/local/stow'), overriding any pre-existing links to bin files or -man pages, and ignoring some cruft that gets installed by default. - - -File: stow.info, Node: Compile-time vs Install-time, Next: Bootstrapping, Prev: Resource Files, Up: Top - -11 Compile-time vs Install-time -******************************* - -Software whose installation is managed with Stow needs to be installed -in one place (the package directory, e.g. `/usr/local/stow/perl') but -needs to appear to run in another place (the target tree, e.g., -`/usr/local'). Why is this important? What's wrong with Perl, for -instance, looking for its files in `/usr/local/stow/perl' instead of in -`/usr/local'? - - The answer is that there may be another package, e.g., -`/usr/local/stow/perl-extras', stowed under `/usr/local'. If Perl is -configured to find its files in `/usr/local/stow/perl', it will never -find the extra files in the `perl-extras' package, even though they're -intended to be found by Perl. On the other hand, if Perl looks for its -files in `/usr/local', then it will find the intermingled Perl and -`perl-extras' files. - - This means that when you compile a package, you must tell it the -location of the run-time, or target tree; but when you install it, you -must place it in the stow tree. - - Some software packages allow you to specify, at compile-time, -separate locations for installation and for run-time. Perl is one such -package; *Note Perl and Perl 5 Modules::. Others allow you to compile -the package, then give a different destination in the `make install' -step without causing the binaries or other files to get rebuilt. Most -GNU software falls into this category; Emacs is a notable exception. -See *note GNU Emacs::, and *note Other FSF Software::. - - Still other software packages cannot abide the idea of separate -installation and run-time locations at all. If you try to `make -install prefix=/usr/local/stow/FOO', then first the whole package will -be recompiled to hardwire the `/usr/local/stow/FOO' path. With these -packages, it is best to compile normally, then run `make -n install', -which should report all the steps needed to install the just-built -software. Place this output into a file, edit the commands in the file -to remove recompilation steps and to reflect the Stow-based -installation location, and execute the edited file as a shell script in -place of `make install'. Be sure to execute the script using the same -shell that `make install' would have used. - - (If you use GNU Make and a shell [such as GNU bash] that understands -`pushd' and `popd', you can do the following: - - 1. Replace all lines matching `make[N]: Entering directory `DIR'' - with `pushd DIR'. - - 2. Replace all lines matching `make[N]: Leaving directory `DIR'' with - `popd'. - - 3. Delete all lines matching `make[N]: Nothing to be done for RULE'. - - Then find other lines in the output containing `cd' or `make' -commands and rewrite or delete them. In particular, you should be able -to delete sections of the script that resemble this: - - for i in DIR_1 DIR_2 ...; do \ - (cd $i; make ARGS ...) \ - done - -Note, that's "should be able to," not "can." Be sure to modulate these -guidelines with plenty of your own intelligence. - - The details of stowing some specific packages are described in the -following sections. - -* Menu: - -* GNU Emacs:: -* Other FSF Software:: -* Cygnus Software:: -* Perl and Perl 5 Modules:: - - -File: stow.info, Node: GNU Emacs, Next: Other FSF Software, Prev: Compile-time vs Install-time, Up: Compile-time vs Install-time - -11.1 GNU Emacs -============== - -Although the Free Software Foundation has many enlightened practices -regarding Makefiles and software installation (see *note Other FSF -Software::), Emacs, its flagship program, doesn't quite follow the -rules. In particular, most GNU software allows you to write: - - make - make install prefix=/usr/local/stow/PACKAGE - -If you try this with Emacs, then the new value for `prefix' in the -`make install' step will cause some files to get recompiled with the -new value of `prefix' wired into them. In Emacs 19.23 and later,(1) -the way to work around this problem is: - - make - make install-arch-dep install-arch-indep prefix=/usr/local/stow/emacs - - In 19.22 and some prior versions of Emacs, the workaround was: - - make - make do-install prefix=/usr/local/stow/emacs - - ---------- Footnotes ---------- - - (1) As I write this, the current version of Emacs is 19.31. - - -File: stow.info, Node: Other FSF Software, Next: Cygnus Software, Prev: GNU Emacs, Up: Compile-time vs Install-time - -11.2 Other FSF Software -======================= - -The Free Software Foundation, the organization behind the GNU project, -has been unifying the build procedure for its tools for some time. -Thanks to its tools `autoconf' and `automake', most packages now -respond well to these simple steps, with no other intervention -necessary: - - ./configure OPTIONS - make - make install prefix=/usr/local/stow/PACKAGE - - Hopefully, these tools can evolve to be aware of Stow-managed -packages, such that providing an option to `configure' can allow `make' -and `make install' steps to work correctly without needing to "fool" -the build process. - - -File: stow.info, Node: Cygnus Software, Next: Perl and Perl 5 Modules, Prev: Other FSF Software, Up: Compile-time vs Install-time - -11.3 Cygnus Software -==================== - -Cygnus is a commercial supplier and supporter of GNU software. It has -also written several of its own packages, released under the terms of -the GNU General Public License; and it has taken over the maintenance of -other packages. Among the packages released by Cygnus are `gdb', -`gnats', and `dejagnu'. - - Cygnus packages have the peculiarity that each one unpacks into a -directory tree with a generic top-level Makefile, which is set up to -compile _all_ of Cygnus' packages, any number of which may reside under -the top-level directory. In other words, even if you're only building -`gnats', the top-level Makefile will look for, and try to build, `gdb' -and `dejagnu' subdirectories, among many others. - - The result is that if you try `make -n install -prefix=/usr/local/stow/PACKAGE' at the top level of a Cygnus package, -you'll get a bewildering amount of output. It will then be very -difficult to visually scan the output to see whether the install will -proceed correctly. Unfortunately, it's not always clear how to invoke -an install from the subdirectory of interest. - - In cases like this, the best approach is to run your `make install -prefix=...', but be ready to interrupt it if you detect that it is -recompiling files. Usually it will work just fine; otherwise, install -manually. - - -File: stow.info, Node: Perl and Perl 5 Modules, Prev: Cygnus Software, Up: Compile-time vs Install-time - -11.4 Perl and Perl 5 Modules -============================ - -Perl 4.036 allows you to specify different locations for installation -and for run-time. It is the only widely-used package in this author's -experience that allows this, though hopefully more packages will adopt -this model. - - Unfortunately, the authors of Perl believed that only AFS sites need -this ability. The configuration instructions for Perl 4 misleadingly -state that some occult means are used under AFS to transport files from -their installation tree to their run-time tree. In fact, that confusion -arises from the fact that Depot, Stow's predecessor, originated at -Carnegie Mellon University, which was also the birthplace of AFS. CMU's -need to separate install-time and run-time trees stemmed from its use of -Depot, not from AFS. - - The result of this confusion is that Perl 5's configuration script -doesn't even offer the option of separating install-time and run-time -trees _unless_ you're running AFS. Fortunately, after you've entered -all the configuration settings, Perl's setup script gives you the -opportunity to edit those settings in a file called `config.sh'. When -prompted, you should edit this file and replace occurrences of - - inst.../usr/local... - -with - - inst.../usr/local/stow/perl... - -You can do this with the following Unix command: - - sed 's,^\(inst.*/usr/local\),\1/stow/perl,' config.sh > config.sh.new - mv config.sh.new config.sh - - Hopefully, the Perl authors will correct this deficiency in Perl 5's -configuration mechanism. - - Perl 5 modules--i.e., extensions to Perl 5--generally conform to a -set of standards for building and installing them. The standard says -that the package comes with a top-level `Makefile.PL', which is a Perl -script. When it runs, it generates a `Makefile'. - - If you followed the instructions above for editing `config.sh' when -Perl was built, then when you create a `Makefile' from a `Makefile.PL', -it will contain separate locations for run-time (`/usr/local') and -install-time (`/usr/local/stow/perl'). Thus you can do - - perl Makefile.PL - make - make install - -and the files will be installed into `/usr/local/stow/perl'. However, -you might prefer each Perl module to be stowed separately. In that -case, you must edit the resulting Makefile, replacing -`/usr/local/stow/perl' with `/usr/local/stow/MODULE'. The best way to -do this is: - - perl Makefile.PL - find . -name Makefile -print | \ - xargs perl -pi~ -e 's,^(INST.*/stow)/perl,$1/MODULE,;' - make - make install - -(The use of `find' and `xargs' ensures that all Makefiles in the -module's source tree, even those in subdirectories, get edited.) A -good convention to follow is to name the stow directory for a Perl -MODULE `cpan.MODULE', where `cpan' stands for Comprehensive Perl -Archive Network, a collection of FTP sites that is the source of most -Perl 5 extensions. This way, it's easy to tell at a glance which of -the subdirectories of `/usr/local/stow' are Perl 5 extensions. - - When you stow separate Perl 5 modules separately, you are likely to -encounter conflicts (*note Conflicts::) with files named `.exists' and -`perllocal.pod'. One way to work around this is to remove those files -before stowing the module. If you use the `cpan.MODULE' naming -convention, you can simply do this: - - cd /usr/local/stow - find cpan.* \( -name .exists -o -name perllocal.pod \) -print | \ - xargs rm - - -File: stow.info, Node: Bootstrapping, Next: Reporting Bugs, Prev: Compile-time vs Install-time, Up: Top - -12 Bootstrapping -**************** - -Suppose you have a stow directory all set up and ready to go: -`/usr/local/stow/perl' contains the Perl installation, -`/usr/local/stow/stow' contains Stow itself, and perhaps you have other -packages waiting to be stowed. You'd like to be able to do this: - - cd /usr/local/stow - stow -vv * - -but `stow' is not yet in your `PATH'. Nor can you do this: - - cd /usr/local/stow - stow/bin/stow -vv * - -because the `#!' line at the beginning of `stow' tries to locate Perl -(usually in `/usr/local/bin/perl'), and that won't be found. The -solution you must use is: - - cd /usr/local/stow - perl/bin/perl stow/bin/stow -vv * - - -File: stow.info, Node: Reporting Bugs, Next: Known Bugs, Prev: Bootstrapping, Up: Top - -13 Reporting Bugs -***************** - -Please send bug reports to the current maintaner, Kal Hodgson, by -electronic mail. The address to use is `'. Please -include: - - * the version number of Stow (`stow --version'); - - * the version number of Perl (`perl -v'); - - * the system information, which can often be obtained with `uname - -a'; - - * a description of the bug; - - * the precise command you gave; - - * the output from the command (preferably verbose output, obtained by - adding `--verbose=3' to the Stow command line). - - If you are really keen, consider developing a minimal test case and -creating a new test. See the `t/' for lots of examples. - - Before reporting a bug, please read the manual carefully, especially -*note Known Bugs::, to see whether you're encountering something that -doesn't need reporting. (*note Conflicts::). - - -File: stow.info, Node: Known Bugs, Next: GNU General Public License, Prev: Reporting Bugs, Up: Top - -14 Known Bugs -************* - - * When using multiple stow directories (*note Multiple Stow - Directories::), Stow fails to "split open" tree-folding symlinks - (*note Installing Packages::) that point into a stow directory - which is not the one in use by the current Stow command. Before - failing, it should search the target of the link to see whether - any element of the path contains a `.stow' file. If it finds one, - it can "learn" about the cooperating stow directory to - short-circuit the `.stow' search the next time it encounters a - tree-folding symlink. - - -File: stow.info, Node: GNU General Public License, Next: Index, Prev: Known Bugs, Up: Top - -GNU General Public License -************************** - - Version 2, June 1991 - - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 675 Mass Ave, Cambridge, MA 02139, USA - - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -Preamble -======== - -The licenses for most software are designed to take away your freedom -to share and change it. By contrast, the GNU General Public License is -intended to guarantee your freedom to share and change free -software--to make sure the software is free for all its users. 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It is safest -to attach them to the start of each source file to most effectively -convey the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - ONE LINE TO GIVE THE PROGRAM'S NAME AND AN IDEA OF WHAT IT DOES. - Copyright (C) 19YY NAME OF AUTHOR - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License - as published by the Free Software Foundation; either version 2 - of the License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Also add information on how to contact you by electronic and paper -mail. - - If the program is interactive, make it output a short notice like -this when it starts in an interactive mode: - - Gnomovision version 69, Copyright (C) 19YY NAME OF AUTHOR - Gnomovision comes with ABSOLUTELY NO WARRANTY; for details - type `show w'. This is free software, and you are welcome - to redistribute it under certain conditions; type `show c' - for details. - - The hypothetical commands `show w' and `show c' should show the -appropriate parts of the General Public License. Of course, the -commands you use may be called something other than `show w' and `show -c'; they could even be mouse-clicks or menu items--whatever suits your -program. - - You should also get your employer (if you work as a programmer) or -your school, if any, to sign a "copyright disclaimer" for the program, -if necessary. Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright - interest in the program `Gnomovision' - (which makes passes at compilers) written - by James Hacker. - - SIGNATURE OF TY COON, 1 April 1989 - Ty Coon, President of Vice - - This General Public License does not permit incorporating your -program into proprietary programs. If your program is a subroutine -library, you may consider it more useful to permit linking proprietary -applications with the library. If this is what you want to do, use the -GNU Library General Public License instead of this License. - - -File: stow.info, Node: Index, Prev: GNU General Public License, Up: Top - -Index -***** - -[index] -* Menu: - -* absolute symlink: Terminology. (line 43) -* conflict: Installing Packages. (line 72) -* deletion: Deleting Packages. (line 6) -* directory folding: Installing Packages. (line 13) -* false conflict: Conflicts. (line 19) -* folding trees: Installing Packages. (line 13) -* installation: Installing Packages. (line 6) -* installation image: Terminology. (line 23) -* ownership: Installing Packages. (line 62) -* package: Terminology. (line 6) -* package directory: Terminology. (line 30) -* package name: Terminology. (line 30) -* relative symlink: Terminology. (line 43) -* splitting open folded trees: Installing Packages. (line 44) -* stow directory: Terminology. (line 16) -* symlink: Terminology. (line 43) -* target directory: Terminology. (line 11) -* tree folding: Installing Packages. (line 13) -* unfolding trees: Installing Packages. (line 44) - - - -Tag Table: -Node: Top1313 -Node: Introduction2684 -Ref: Introduction-Footnote-14845 -Node: Terminology4887 -Node: Invoking Stow7250 -Node: Installing Packages12809 -Node: Deleting Packages17066 -Ref: Deleting Packages-Footnote-118486 -Node: Conflicts19074 -Node: Deferred Operation20253 -Node: Mixing Operations20781 -Node: Multiple Stow Directories21780 -Node: Target Maintenance22954 -Node: Resource Files23550 -Node: Compile-time vs Install-time25160 -Node: GNU Emacs28447 -Ref: GNU Emacs-Footnote-129436 -Node: Other FSF Software29500 -Node: Cygnus Software30261 -Node: Perl and Perl 5 Modules31740 -Node: Bootstrapping35295 -Node: Reporting Bugs36076 -Node: Known Bugs37044 -Node: GNU General Public License37747 -Node: Index56887 - -End Tag Table diff --git a/stow.texi b/stow.texi deleted file mode 100644 index 81630dc..0000000 --- a/stow.texi +++ /dev/null @@ -1,1440 +0,0 @@ -\input texinfo @c -*- texinfo -*- -@c %**start of header -@setfilename stow.info -@settitle Stow -@finalout -@c @smallbook -@c @setchapternewpage odd -@c @footnotestyle separate -@c %**end of header -@dircategory Administration -@direntry -* Stow: (stow). GNU Stow. -@end direntry - -@include version.texi - -@ifinfo -This file describes GNU Stow version @value{VERSION}, a program for -managing the installation of software packages. - -Software and documentation Copyright @copyright{} 1993, 1994, 1995, 1996 -by Bob Glickstein . -Copyright @copyright{} 2000, 2001 Guillaume Morin . -Copyright @copyright{} 2007 Kahlil (Kal) Hodgson . - -Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice are -preserved on all copies. - -@ignore -Permission is granted to process this file through TeX and print the -results, provided the printed document carries a copying permission -notice identical to this one except for the removal of this paragraph -(this paragraph not being relevant to the printed manual). -@end ignore - -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided also that the -section entitled ``GNU General Public License'' is included with the -modified manual, and provided that the entire resulting derived work is -distributed under the terms of a permission notice identical to this -one. - -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation -approved by the Free Software Foundation. -@end ifinfo - -@titlepage -@title Stow @value{VERSION} -@subtitle Managing the installation of software packages -@author Bob Glickstein, Zanshin Software, Inc. -@author Kahlil Hodgson, RMIT Univerity, Australia. -@page -@vskip 0pt plus 1filll -This manual describes GNU Stow version @value{VERSION}, a program for -managing the installation of software packages. - -Software and documentation Copyright @copyright{} 1993, 1994, 1995, 1996 -by Bob Glickstein . -Copyright @copyright{} 2000,2001 Guillaume Morin -Copyright @copyright{} 2007 Kahlil (Kal) Hodgson - -Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice are -preserved on all copies. - -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided also that the -section entitled ``GNU General Public License'' is included with the -modified manual, and provided that the entire resulting derived work is -distributed under the terms of a permission notice identical to this -one. - -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation -approved by the Free Software Foundation. -@end titlepage - - -@c ========================================================================== -@node Top, Introduction, (dir), (dir) - -@ifinfo -This manual describes GNU Stow @value{VERSION}, a program for managing -the installation of software packages. -@end ifinfo - -@menu -* Introduction:: Description of Stow. -* Terminology:: Terms used by this manual. -* Invoking Stow:: Option summary. -* Installing Packages:: Using Stow to install. -* Deleting Packages:: Using Stow to uninstall. -* Conflicts:: When Stow can't stow. -* Deferred Operation:: Using two passes to stow. -* Mixing Operations:: Multiple actions per invocation. -* Multiple Stow Directories:: Further segregating software. -* Target Maintenance:: Cleaning up mistakes. -* Resource Files:: Setting default command line options. -* Compile-time vs Install-time:: Faking out `make install'. -* Bootstrapping:: When stow and perl are not yet stowed. -* Reporting Bugs:: How, what, where, and when to report. -* Known Bugs:: Don't report any of these. -* GNU General Public License:: Copying terms. -* Index:: Index of concepts. - - --- The Detailed Node Listing --- - -Compile-time and install-time - -* GNU Emacs:: -* Other FSF Software:: -* Cygnus Software:: -* Perl and Perl 5 Modules:: -@end menu - - -@c =========================================================================== -@node Introduction, Terminology, Top, Top -@chapter Introduction - -Stow is a tool for managing the installation of multiple software -packages in the same run-time directory tree. One historical difficulty -of this task has been the need to administer, upgrade, install, and -remove files in independent packages without confusing them with other -files sharing the same file system space. For instance, it is common to -install Perl and Emacs in @file{/usr/local}. When one does so, one -winds up with the following files@footnote{As of Perl 4.036 and Emacs -19.22.} in @file{/usr/local/man/man1}: - -@example -a2p.1 -ctags.1 -emacs.1 -etags.1 -h2ph.1 -perl.1 -s2p.1 -@end example - -@noindent -Now suppose it's time to uninstall Perl. Which man pages -get removed? Obviously @file{perl.1} is one of them, but it should not -be the administrator's responsibility to memorize the ownership of -individual files by separate packages. - -The approach used by Stow is to install each package into its own -tree, then use symbolic links to make it appear as though the files are -installed in the common tree. Administration can be performed in the -package's private tree in isolation from clutter from other packages. -Stow can then be used to update the symbolic links. The structure -of each private tree should reflect the desired structure in the common -tree; i.e. (in the typical case) there should be a @file{bin} directory -containing executables, a @file{man/man1} directory containing section 1 -man pages, and so on. - -Stow was inspired by Carnegie Mellon's Depot program, but is -substantially simpler and safer. Whereas Depot required database files -to keep things in sync, Stow stores no extra state between runs, so -there's no danger (as there was in Depot) of mangling directories when -file hierarchies don't match the database. Also unlike Depot, Stow will -never delete any files, directories, or links that appear in a Stow -directory (e.g., @file{/usr/local/stow/emacs}), so it's always possible -to rebuild the target tree (e.g., @file{/usr/local}). - -For information about the latest version of Stow, you can refer to -http://www.gnu.org/software/stow/. - - -@c =========================================================================== -@node Terminology, Invoking Stow, Introduction, Top -@chapter Terminology - -@indent -@cindex package -A @dfn{package} is a related collection of files and directories that -you wish to administer as a unit --- e.g., Perl or Emacs --- and that needs -to be installed in a particular directory structure --- e.g., with -@file{bin}, @file{lib}, and @file{man} subdirectories. - -@cindex target directory -A @dfn{target directory} is the root of a tree in which one or more -packages wish to @emph{appear} to be installed. A common, but by no -means the only such location is @file{/usr/local}. The examples in this -manual will use @file{/usr/local} as the target directory. - -@cindex stow directory -A @dfn{stow directory} is the root of a tree containing separate -packages in private subtrees. When Stow runs, it uses the current -directory as the default stow directory. The examples in this manual -will use @file{/usr/local/stow} as the stow directory, so that -individual packages will be, for example, @file{/usr/local/stow/perl} -and @file{/usr/local/stow/emacs}. - -@cindex installation image -An @dfn{installation image} is the layout of files and directories -required by a package, relative to the target directory. Thus, the -installation image for Perl includes: a @file{bin} directory containing -@file{perl} and @file{a2p} (among others); an @file{info} directory -containing Texinfo documentation; a @file{lib/perl} directory containing -Perl libraries; and a @file{man/man1} directory containing man pages. - -@cindex package directory -@cindex package name -A @dfn{package directory} is the root of a tree containing the -installation image for a particular package. Each package directory -must reside in a stow directory --- e.g., the package directory -@file{/usr/local/stow/perl} must reside in the stow directory -@file{/usr/local/stow}. The @dfn{name} of a package is the name of its -directory within the stow directory --- e.g., @file{perl}. - -Thus, the Perl executable might reside in -@file{/usr/local/stow/perl/bin/perl}, where @file{/usr/local} is the -target directory, @file{/usr/local/stow} is the stow directory, -@file{/usr/local/stow/perl} is the package directory, and -@file{bin/perl} within is part of the installation image. - -@cindex symlink -@cindex relative symlink -@cindex absolute symlink -A @dfn{symlink} is a symbolic link. A symlink can be @dfn{relative} or -@dfn{absolute}. An absolute symlink names a full path; that is, one -starting from @file{/}. A relative symlink names a relative path; that -is, one not starting from @file{/}. The target of a relative symlink is -computed starting from the symlink's own directory. Stow only -creates relative symlinks. - -@c =========================================================================== -@node Invoking Stow, Installing Packages, Terminology, Top -@chapter Invoking Stow - -The syntax of the @code{stow} command is: - -@example -stow [@var{options}] [@var{action flag}] @var{package @dots{}} -@end example - -@noindent -Each @var{package} is the name of a package (e.g., @samp{perl}) in the stow -directory that we wish to install into (or delete from) the target directory. -The default action is to install the given packages, although alternate actions -may be specified by preceding the package name(s) with an @var{action flag}. -Unless otherwise specified, the stow directory is assumed to be -the current directory and the target directory is assumed to be the parent of -the current directory, so it is typical to execute @code{stow} from the -directory @file{/usr/local/stow}. - -@noindent -The following options are supported: - -@table @samp - -@item -d @var{dir} -@itemx --dir=@var{dir} -Set the stow directory to @var{dir} instead of the current directory. -This also has the effect of making the default target directory be the -parent of @var{dir}. - -@item -t @var{dir} -@itemx --target=@var{dir} -Set the target directory to @var{dir} instead of the parent of the stow -directory. - -@item --ignore='' -This (repeatable) option lets you suppress acting on files that match the -given perl regular expression. For example, using the options - -@example ---ignore='~' --ignore='\.#.*' -@end example - -@noindent -will cause stow to ignore emacs and CVS backup files. - -Note that the regular expression is anchored to the end of the filename, -because this is what you will want to do most of the time. - -@item --defer='' -This (repeatable) option lets you defer stowing a file matching the given -regular expression, if that file is already stowed by another package. For -example, the following options - -@example ---defer='man' --defer='info' -@end example - -@noindent -will cause stow to skip over pre-existing man and info pages. - -Equivalently, you could use --defer='man|info' since the argument is just -a Perl regex. - -Note that the regular expression is anchored to the beginning of the path -relative to the target directory, because this is what you will want to do most -of the time. - -@item --override='' -This (repeatable) option forces any file matching the regular expression to be -stowed, even if the file is already stowed to another package. For example, -the following options - -@example ---override='man' --override='info' -@end example - -@noindent -will permit stow to overwrite links that point to pre-existing man and info -pages that are owned by stow and would otherwise cause a conflict. - -The regular expression is anchored to the beginning of the path relative to -the target directory, because this is what you will want to do most of the time. - -@item -n -@itemx --no -@itemx --simulate -Do not perform any operations that modify the file system; in combination with -@samp{-v} can be used to merely show what would happen. - -@item -v -@itemx --verbose[=@var{n}] -Send verbose output to standard error describing what Stow is -doing. Verbosity levels are 0, 1, 2, and 3; 0 is the default. Using -@samp{-v} or @samp{--verbose} increases the verbosity by one; using -@samp{--verbose=@var{n}} sets it to @var{n}. - -@item -p -@itemx --compat -Scan the whole target tree when unstowing. By default, only directories -specified in the @dfn{installation image} are scanned during an unstow -operation. Scanning the whole tree can be prohibitive if your target tree is -very large. This option restores the legacy behaviour; however, the -@samp{--badlinks} option may be a better way of ensuring that your -installation does not have any dangling symlinks. - -@item -V -@itemx --version -Show Stow version number, and exit. - -@item -h -@itemx --help -Show Stow command syntax, and exit. -@end table - -The following @var{action flags} are supported: - -@table @samp -@item -D -@itemx --delete -Delete (unstow) the package name(s) that follow this option from the @dfn{target -directory}. This option may be repeated any number of times. - -@item -R -@itemx --restow -Restow (first unstow, then stow again) the package names that follow this -option. This is useful for pruning obsolete symlinks from the target tree -after updating the software in a package. This option may be repeated any -number of times. - -@item -S -@item --stow -explictly stow the package name(s) that follow this option. May be omitted if -you are not using the @samp{-D} or @samp{-R} options in the same invocation. -See @xref{Mixing Operations}, for details of when you might like to use this -feature. This option may be repeated any number of times. -@end table - -The following options are useful for cleaning up your target tree: - -@table @samp -@item -b -@itemx --badlinks -Checks target directory for bogus symbolic links. That is, links that point to -non-existent files. - -@item -a -@itemx --aliens -Checks for files in the target directory that are not symbolic links. The -target directory should be managed by stow alone, except for directories that -contain a @file{.stow} file. - -@item -l -@itemx --list -Will display the target package for every symbolic link in the stow target -directory. -The following options are deprecated: -@end table - -The following options are deprecated as of Stow Version 2: -@table @samp -@item -c -@itemx --conflicts -Print any conflicts that are encountered. This option -implies @samp{-n}, and is used to search for all conflicts that might -arise from an actual Stow operation. - -This option is deprecated as conflicts are now printed by default and no -operations will be performed if any conflicts are detected. -@end table - -@ref{Resource Files} for a way to set default values for any of these options - - -@c =========================================================================== -@node Installing Packages, Deleting Packages, Invoking Stow, Top -@chapter Installing Packages - -@cindex installation -The default action of Stow is to install a package. This means creating -symlinks in the target tree that point into the package tree. Stow -attempts to do this with as few symlinks as possible; in other words, if -Stow can create a single symlink that points to an entire subtree within -the package tree, it will choose to do that rather than create a -directory in the target tree and populate it with symlinks. - -@cindex tree folding -@cindex directory folding -@cindex folding trees -For example, suppose that no packages have yet been installed in -@file{/usr/local}; it's completely empty (except for the @file{stow} -subdirectory, of course). Now suppose the Perl package is installed. -Recall that it includes the following directories in its installation -image: @file{bin}; @file{info}; @file{lib/perl}; @file{man/man1}. -Rather than creating the directory @file{/usr/local/bin} and populating -it with symlinks to @file{../stow/perl/bin/perl} and -@file{../stow/perl/bin/a2p} (and so on), Stow will create a -single symlink, @file{/usr/local/bin}, which points to -@file{stow/perl/bin}. In this way, it still works to refer to -@file{/usr/local/bin/perl} and @file{/usr/local/bin/a2p}, and fewer -symlinks have been created. This is called @dfn{tree folding}, since an -entire subtree is ``folded'' into a single symlink. - -To complete this example, Stow will also create the symlink -@file{/usr/local/info} pointing to @file{stow/perl/info}; the symlink -@file{/usr/local/lib} pointing to @file{stow/perl/lib}; and the symlink -@file{/usr/local/man} pointing to @file{stow/perl/man}. - -Now suppose that instead of installing the Perl package into an empty -target tree, the target tree is not empty to begin with. Instead, it -contains several files and directories installed under a different -system-administration philosophy. In particular, @file{/usr/local/bin} -already exists and is a directory, as are @file{/usr/local/lib} and -@file{/usr/local/man/man1}. In this case, Stow will descend into -@file{/usr/local/bin} and create symlinks to -@file{../stow/perl/bin/perl} and @file{../stow/perl/bin/a2p} (etc.), -and it will descend into @file{/usr/local/lib} and create the -tree-folding symlink @file{perl} pointing to -@file{../stow/perl/lib/perl}, and so on. As a rule, Stow only -descends as far as necessary into the target tree when it can create a -tree-folding symlink. - -@cindex splitting open folded trees -@cindex unfolding trees -The time often comes when a tree-folding symlink has to be undone -because another package uses one or more of the folded subdirectories in -its installation image. This operation is called @dfn{splitting open} or -@dfn{unfolding} a folded tree. It involves removing the original symlink from -the target tree, creating a true directory in its place, and then populating the -new directory with symlinks to the newly-installed package @emph{and} to -the old package that used the old symlink. For example, suppose that -after installing Perl into an empty @file{/usr/local}, we wish to -install Emacs. Emacs's installation image includes a @file{bin} -directory containing the @file{emacs} and @file{etags} executables, -among others. Stow must make these files appear to be installed -in @file{/usr/local/bin}, but presently @file{/usr/local/bin} is a -symlink to @file{stow/perl/bin}. Stow therefore takes the -following steps: the symlink @file{/usr/local/bin} is deleted; the -directory @file{/usr/local/bin} is created; links are made from -@file{/usr/local/bin} to @file{../stow/emacs/bin/emacs} and -@file{../stow/emacs/bin/etags}; and links are made from -@file{/usr/local/bin} to @file{../stow/perl/bin/perl} and -@file{../stow/perl/bin/a2p}. - -@cindex ownership -When splitting open a folded tree, Stow makes sure that the -symlink it is about to remove points inside a valid package in the -current stow directory. @emph{Stow will never delete anything -that it doesn't own}. Stow ``owns'' everything living in the -target tree that points into a package in the stow directory. Anything -Stow owns, it can recompute if lost: symlinks that point into a package in -the stow directory, or directories that only contain sysmlinks that stow -``owns''. Note that by this definition, Stow doesn't ``own'' anything -@emph{in} the stow directory or in any of the packages. - -@cindex conflict -If Stow needs to create a directory or a symlink in the target -tree and it cannot because that name is already in use and is not owned -by Stow, then a @dfn{conflict} has arisen. @xref{Conflicts}. - - -@c =========================================================================== -@node Deleting Packages, Conflicts, Installing Packages, Top -@chapter Deleting Packages - -@cindex deletion -When the @samp{-D} option is given, the action of Stow is to -delete a package from the target tree. Note that Stow will not -delete anything it doesn't ``own''. Deleting a package does @emph{not} -mean removing it from the stow directory or discarding the package -tree. - -To delete a package, Stow recursively scans the target tree, skipping over any -directory that is not included in the installation image.@footnote{This -approach was introduced in version 2 of GNU Stow. Previously, the whole -target tree was scanned and stow directories were explicitly omitted. This -became problematic when dealing with very large installations. The only -situation where this is useful is if you accidentally delete a directory in -the package tree, leaving you with a whole bunch of dangling links. Note that -you can enable the old approach with the @samp{-p} option. Alternatively, you can -use the @samp{--badlinks} option get stow to search for dangling links in your target tree and remove the offenders manually.} -For example, if the target directory is @file{/usr/local} and the -installation image for the package being deleted has only a @file{bin} -directory and a @file{man} directory at the top level, then we only scan -@file{/usr/local/bin} and @file{/usr/local/bin/man}, and not -@file{/usr/local/lib} or @file{/usr/local/share}, or for that matter -@file{/usr/local/stow}. Any symlink it finds that points into the package -being deleted is removed. Any directory that contained only symlinks to the -package being deleted is removed. Any directory that, after removing symlinks -and empty subdirectories, contains only symlinks to a single other package, is -considered to be a previously ``folded'' tree that was ``split open.'' Stow -will re-fold the tree by removing the symlinks to the surviving package, -removing the directory, then linking the directory back to the surviving -package. - - -@c =========================================================================== -@node Conflicts, Deferred Operation, Deleting Packages, Top -@section Conflicts - -If, during installation, a file or symlink exists in the target tree and -has the same name as something Stow needs to create, and if the -existing name is not a folded tree that can be split open, then a -@dfn{conflict} has arisen. A conflict also occurs if a directory exists -where Stow needs to place a symlink to a non-directory. On the -other hand, if the existing name is merely a symlink that already points -where Stow needs it to, then no conflict has occurred. (Thus it -is harmless to install a package that has already been installed.) - -A conflict causes Stow to exit immediately and print a warning -(unless @samp{-c} is given), even if that means aborting an installation -in mid-package. - -@cindex false conflict -When running Stow with the @samp{-n} or @samp{-c} options, no actual -filesystem-modifying operations take place. Thus if a folded tree would -have been split open, but instead was left in place because @samp{-n} or -@samp{-c} was used, then Stow will report a @dfn{false conflict}, since -the directory that Stow was expecting to populate has remained an -un-populatable symlink. - -@c =========================================================================== -@node Deferred Operation, Mixing Operations, Conflicts, Top -@chapter Deferred Operation - -For complex packages, scanning the stow and target trees in tandem, and -deciding whether to make directories or links, split-open or fold directories, -can actually take a long time (a number of seconds). Moreover, an accurate -analysis of potential conflicts, requires us to take in to account all of -these operations. - -Accidentally stowing a package that will result in a conflict - -@c =========================================================================== -@node Mixing Operations, Multiple Stow Directories, Deferred Operation, Top -@chapter Mixing Operations - -Since Version 2.0, multiple distinct actions can be specified in a single -invocation of GNU Stow. For example, to update an installation of Emacs from -version 21.3 to 21.4a you can now do the following: - -@example -stow -D emacs-21.3 -S emacs-21.4a -@end example - -@noindent -which will replace emacs-21.3 with emacs-21.4a using a single invocation. - -This is much faster and cleaner than performing two separate invocations of -stow, because redundant folding/unfolding operations can be factored out. -In addition, all the operations are calculated and merged before being executed -@pxref{Deferred Operation}, so the amount of of time in which GNU Emacs is unavailable is minimised. - -You can mix and match any number of actions, for example, - -@example -stow -S pkg1 pkg2 -D pkg3 pkg4 -S pkg5 -R pkg6 -@end example - -@noindent -will unstow pkg3, pkg4 and pkg6, then stow pkg1, pkg2, pkg5 and pkg6. - -@c =========================================================================== -@node Multiple Stow Directories, Target Maintenance, Mixing Operations, Top -@chapter Multiple Stow Directories - -If there are two or more system administrators who wish to maintain -software separately, or if there is any other reason to want two or more -stow directories, it can be done by creating a file named @file{.stow} -in each stow directory. The presence of @file{/usr/local/foo/.stow} -informs Stow that, though @file{foo} is not the current stow -directory, and though it is a subdirectory of the target directory, -nevertheless it is @emph{a} stow directory and as such Stow -doesn't ``own'' anything in it (@pxref{Installing Packages}). This will -protect the contents of @file{foo} from a @samp{stow -D}, for instance. - -XXX is this still true? XXX - -When multiple stow directories share a target tree, the effectiveness -of Stow is reduced. If a tree-folding symlink is encountered and -needs to be split open during an installation, but the symlink points -into the wrong stow directory, Stow will report a conflict rather -than split open the tree (because it doesn't consider itself to own the -symlink, and thus cannot remove it). - - -@c =========================================================================== -@node Target Maintenance, Resource Files, Multiple Stow Directories, Top -@chapter Target Maintenance - -From time to time you will need to clean up your target tree. -Stow includes three operational modes that performs checks that -would generally be too expensive to performed during normal stow -execution. - -I've added a -l option to chkstow -which will give you a listing of every package name that has already been stowed -should be able to diff this with your directory listing - -bash -cd build/scripts -diff <(../bin/chkstow -l) <(ls -1) - - -@c =========================================================================== -@node Resource Files, Compile-time vs Install-time, Target Maintenance, Top -@chapter Resource Files - -Default command line options may be set in `.stowrc' (current directory) or -`~/.stowrc' (home directory). These are parsed in that order, and effectively -prepended to you command line. This feature can be used for some interesting -effects. - -For example, suppose your site uses more than one stow directory, perhaps in -order to share around responsibilities with a number of systems -administrators. One of the administrators might have the following in there -`~/.stowrc' file: - -@example ---dir=/usr/local/stow2 ---target=/usr/local ---ignore='~' ---ignore='^CVS' -@end example - -so that the `stow' command will default to operating on the @file{/usr/local/stow2} -directory, with @file{/usr/local} as the target, and ignoring vi backup files -and CVS directories. - -If you had a stow directory `/usr/local/stow/perl-extras' that was only used -for Perl modules, then you might place the following in -`/usr/local/stow/perl-extras/.stowrc': - -@example ---dir=/usr/local/stow/perl-extras ---target=/usr/local ---override=bin ---override=man ---ignore='perllocal\.pod' ---ignore='\.packlist' ---ignore='\.bs' -@end example - -so that the when your are in the @file{/usr/local/stow/perl-extras} directory, -`stow' will regard any subdirectories as stow packages, with @file{/usr/local} -as the target (rather than the immediate parent directoy -@file{/usr/local/stow}), overriding any pre-existing links to bin files or man -pages, and ignoring some cruft that gets installed by default. - - -@c =========================================================================== -@node Compile-time vs Install-time, Bootstrapping, Resource Files, Top -@chapter Compile-time vs Install-time - -Software whose installation is managed with Stow needs to be installed -in one place (the package directory, e.g. @file{/usr/local/stow/perl}) -but needs to appear to run in another place (the target tree, e.g., -@file{/usr/local}). Why is this important? What's wrong with Perl, for -instance, looking for its files in @file{/usr/local/stow/perl} instead -of in @file{/usr/local}? - -The answer is that there may be another package, e.g., -@file{/usr/local/stow/perl-extras}, stowed under @file{/usr/local}. If -Perl is configured to find its files in @file{/usr/local/stow/perl}, it -will never find the extra files in the @samp{perl-extras} package, even -though they're intended to be found by Perl. On the other hand, if Perl -looks for its files in @file{/usr/local}, then it will find the -intermingled Perl and @samp{perl-extras} files. - -This means that when you compile a package, you must tell it the -location of the run-time, or target tree; but when you install it, you -must place it in the stow tree. - -Some software packages allow you to specify, at compile-time, separate -locations for installation and for run-time. Perl is one such package; -@xref{Perl and Perl 5 Modules}. Others allow you to compile the -package, then give a different destination in the @samp{make install} -step without causing the binaries or other files to get rebuilt. Most -GNU software falls into this category; Emacs is a notable exception. -See @ref{GNU Emacs}, and @ref{Other FSF Software}. - -Still other software packages cannot abide the idea of separate -installation and run-time locations at all. If you try to @samp{make -install prefix=/usr/local/stow/@var{foo}}, then first the whole package -will be recompiled to hardwire the @file{/usr/local/stow/@var{foo}} -path. With these packages, it is best to compile normally, then run -@samp{make -n install}, which should report all the steps needed to -install the just-built software. Place this output into a file, edit -the commands in the file to remove recompilation steps and to reflect -the Stow-based installation location, and execute the edited file as a -shell script in place of @samp{make install}. Be sure to execute the -script using the same shell that @samp{make install} would have used. - -(If you use GNU Make and a shell [such as GNU bash] that understands -@code{pushd} and @code{popd}, you can do the following: - -@enumerate -@item -Replace all lines matching @samp{make[@var{n}]: Entering directory -`@var{dir}'} with @code{pushd @var{dir}}. -@item -Replace all lines matching @samp{make[@var{n}]: Leaving directory -`@var{dir}'} with @code{popd}. -@item -Delete all lines matching @samp{make[@var{n}]: Nothing to be done for -@var{rule}}. -@end enumerate - -Then find other lines in the output containing @code{cd} or @code{make} -commands and rewrite or delete them. In particular, you should be able -to delete sections of the script that resemble this: - -@example -for i in @var{dir_1} @var{dir_2} @r{@dots{}}; do \ - (cd $i; make @var{args} @r{@dots{}}) \ -done -@end example - -@noindent -Note, that's ``should be able to,'' not ``can.'' Be sure to modulate -these guidelines with plenty of your own intelligence. - -The details of stowing some specific packages are described in the -following sections. - -@menu -* GNU Emacs:: -* Other FSF Software:: -* Cygnus Software:: -* Perl and Perl 5 Modules:: -@end menu - -@c --------------------------------------------------------------------------- -@node GNU Emacs, Other FSF Software, Compile-time vs Install-time, Compile-time vs Install-time -@section GNU Emacs - -Although the Free Software Foundation has many enlightened practices -regarding Makefiles and software installation (see @pxref{Other FSF -Software}), Emacs, its flagship program, doesn't quite follow the -rules. In particular, most GNU software allows you to write: - -@example -make -make install prefix=/usr/local/stow/@var{package} -@end example - -@noindent -If you try this with Emacs, then the new value for @code{prefix} in the -@samp{make install} step will cause some files to get recompiled with -the new value of @code{prefix} wired into them. In Emacs 19.23 and -later,@footnote{As I write this, the current version of Emacs is 19.31.} -the way to work around this problem is: - -@example -make -make install-arch-dep install-arch-indep prefix=/usr/local/stow/emacs -@end example - -In 19.22 and some prior versions of Emacs, the workaround was: - -@example -make -make do-install prefix=/usr/local/stow/emacs -@end example - -@c --------------------------------------------------------------------------- -@node Other FSF Software, Cygnus Software, GNU Emacs, Compile-time vs Install-time -@section Other FSF Software - -The Free Software Foundation, the organization behind the GNU project, -has been unifying the build procedure for its tools for some time. -Thanks to its tools @samp{autoconf} and @samp{automake}, most packages -now respond well to these simple steps, with no other intervention -necessary: - -@example -./configure @var{options} -make -make install prefix=/usr/local/stow/@var{package} -@end example - -Hopefully, these tools can evolve to be aware of Stow-managed packages, -such that providing an option to @samp{configure} can allow @samp{make} -and @samp{make install} steps to work correctly without needing to -``fool'' the build process. - -@c --------------------------------------------------------------------------- -@node Cygnus Software, Perl and Perl 5 Modules, Other FSF Software, Compile-time vs Install-time -@section Cygnus Software - -Cygnus is a commercial supplier and supporter of GNU software. It has -also written several of its own packages, released under the terms of -the GNU General Public License; and it has taken over the maintenance of -other packages. Among the packages released by Cygnus are @samp{gdb}, -@samp{gnats}, and @samp{dejagnu}. - -Cygnus packages have the peculiarity that each one unpacks into a -directory tree with a generic top-level Makefile, which is set up to -compile @emph{all} of Cygnus' packages, any number of which may reside -under the top-level directory. In other words, even if you're only -building @samp{gnats}, the top-level Makefile will look for, and try to -build, @file{gdb} and @file{dejagnu} subdirectories, among many others. - -The result is that if you try @samp{make -n install -prefix=/usr/local/stow/@var{package}} at the top level of a Cygnus -package, you'll get a bewildering amount of output. It will then be -very difficult to visually scan the output to see whether the install -will proceed correctly. Unfortunately, it's not always clear how to -invoke an install from the subdirectory of interest. - -In cases like this, the best approach is to run your @samp{make install -prefix=@r{@dots{}}}, but be ready to interrupt it if you detect that it -is recompiling files. Usually it will work just fine; otherwise, -install manually. - -@c --------------------------------------------------------------------------- -@node Perl and Perl 5 Modules, , Cygnus Software, Compile-time vs Install-time -@section Perl and Perl 5 Modules - -Perl 4.036 allows you to specify different locations for installation -and for run-time. It is the only widely-used package in this author's -experience that allows this, though hopefully more packages will adopt -this model. - -Unfortunately, the authors of Perl believed that only AFS sites need -this ability. The configuration instructions for Perl 4 misleadingly -state that some occult means are used under AFS to transport files from -their installation tree to their run-time tree. In fact, that confusion -arises from the fact that Depot, Stow's predecessor, originated at -Carnegie Mellon University, which was also the birthplace of AFS. CMU's -need to separate install-time and run-time trees stemmed from its use of -Depot, not from AFS. - -The result of this confusion is that Perl 5's configuration script -doesn't even offer the option of separating install-time and run-time -trees @emph{unless} you're running AFS. Fortunately, after you've -entered all the configuration settings, Perl's setup script gives you -the opportunity to edit those settings in a file called -@file{config.sh}. When prompted, you should edit this file and replace -occurrences of - -@example -inst@r{@dots{}}/usr/local@r{@dots{}} -@end example - -@noindent -with - -@example -inst@r{@dots{}}/usr/local/stow/perl@r{@dots{}} -@end example - -@noindent -You can do this with the following Unix command: - -@example -sed 's,^\(inst.*/usr/local\),\1/stow/perl,' config.sh > config.sh.new -mv config.sh.new config.sh -@end example - -Hopefully, the Perl authors will correct this deficiency in Perl 5's -configuration mechanism. - -Perl 5 modules---i.e., extensions to Perl 5---generally conform to a set -of standards for building and installing them. The standard says that -the package comes with a top-level @file{Makefile.PL}, which is a Perl -script. When it runs, it generates a @file{Makefile}. - -If you followed the instructions above for editing @file{config.sh} when -Perl was built, then when you create a @file{Makefile} from a -@file{Makefile.PL}, it will contain separate locations for run-time -(@file{/usr/local}) and install-time (@file{/usr/local/stow/perl}). -Thus you can do - -@example -perl Makefile.PL -make -make install -@end example - -@noindent -and the files will be installed into @file{/usr/local/stow/perl}. -However, you might prefer each Perl module to be stowed separately. In -that case, you must edit the resulting Makefile, replacing -@file{/usr/local/stow/perl} with @file{/usr/local/stow/@var{module}}. -The best way to do this is: - -@example -perl Makefile.PL -find . -name Makefile -print | \ - xargs perl -pi~ -e 's,^(INST.*/stow)/perl,$1/@var{module},;' -make -make install -@end example - -@noindent -(The use of @samp{find} and @samp{xargs} ensures that all Makefiles in -the module's source tree, even those in subdirectories, get edited.) A -good convention to follow is to name the stow directory for a Perl -@var{module} @file{cpan.@var{module}}, where @samp{cpan} stands for -Comprehensive Perl Archive Network, a collection of FTP sites that is -the source of most Perl 5 extensions. This way, it's easy to tell at a -glance which of the subdirectories of @file{/usr/local/stow} are Perl 5 -extensions. - -When you stow separate Perl 5 modules separately, you are likely to -encounter conflicts (@pxref{Conflicts}) with files named @file{.exists} -and @file{perllocal.pod}. One way to work around this is to remove -those files before stowing the module. If you use the -@file{cpan.@var{module}} naming convention, you can simply do this: - -@example -cd /usr/local/stow -find cpan.* \( -name .exists -o -name perllocal.pod \) -print | \ - xargs rm -@end example - - -@c --------------------------------------------------------------------------- -@node Bootstrapping, Reporting Bugs, Compile-time vs Install-time, Top -@chapter Bootstrapping - -Suppose you have a stow directory all set up and ready to go: -@file{/usr/local/stow/perl} contains the Perl installation, -@file{/usr/local/stow/stow} contains Stow itself, and perhaps you have -other packages waiting to be stowed. You'd like to be able to do this: - -@example -cd /usr/local/stow -stow -vv * -@end example - -@noindent -but @code{stow} is not yet in your @code{PATH}. Nor can you do this: - -@example -cd /usr/local/stow -stow/bin/stow -vv * -@end example - -@noindent -because the @samp{#!} line at the beginning of @code{stow} tries to -locate Perl (usually in @file{/usr/local/bin/perl}), and that won't be -found. The solution you must use is: - -@example -cd /usr/local/stow -perl/bin/perl stow/bin/stow -vv * -@end example - -@c =========================================================================== -@node Reporting Bugs, Known Bugs, Bootstrapping, Top -@chapter Reporting Bugs - -Please send bug reports to the current maintaner, Kal Hodgson, by electronic -mail. The address to use is @samp{}. Please -include: - -@itemize @bullet -@item -the version number of Stow (@samp{stow --version}); - -@item -the version number of Perl (@samp{perl -v}); - -@item -the system information, which can often be obtained with @samp{uname --a}; - -@item -a description of the bug; - -@item -the precise command you gave; - -@item -the output from the command (preferably verbose output, obtained by -adding @samp{--verbose=3} to the Stow command line). -@end itemize - -If you are really keen, consider developing a minimal test case and creating a -new test. See the @file{t/} for lots of examples. - -Before reporting a bug, please read the manual carefully, especially -@ref{Known Bugs}, to see whether you're encountering -something that doesn't need reporting. -(@pxref{Conflicts}). - -@c =========================================================================== -@node Known Bugs, GNU General Public License, Reporting Bugs, Top -@chapter Known Bugs - -@itemize @bullet -@item -When using multiple stow directories (@pxref{Multiple Stow -Directories}), Stow fails to ``split open'' tree-folding symlinks -(@pxref{Installing Packages}) that point into a stow directory which is -not the one in use by the current Stow command. Before failing, it -should search the target of the link to see whether any element of the -path contains a @file{.stow} file. If it finds one, it can ``learn'' -about the cooperating stow directory to short-circuit the @file{.stow} -search the next time it encounters a tree-folding symlink. -@end itemize - -@c =========================================================================== -@node GNU General Public License, Index, Known Bugs, Top -@unnumbered GNU General Public License - -@center Version 2, June 1991 - -@display -Copyright @copyright{} 1989, 1991 Free Software Foundation, Inc. -675 Mass Ave, Cambridge, MA 02139, USA - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@unnumberedsec Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. By contrast, the GNU General Public -License is intended to guarantee your freedom to share and change free -software---to make sure the software is free for all its users. This -General Public License applies to most of the Free Software -Foundation's software and to any other program whose authors commit to -using it. (Some other Free Software Foundation software is covered by -the GNU Library General Public License instead.) You can apply it to -your programs, too. - - When we speak of free software, we are referring to freedom, not -price. Our General Public Licenses are designed to make sure that you -have the freedom to distribute copies of free software (and charge for -this service if you wish), that you receive source code or can get it -if you want it, that you can change the software or use pieces of it -in new free programs; and that you know you can do these things. - - To protect your rights, we need to make restrictions that forbid -anyone to deny you these rights or to ask you to surrender the rights. -These restrictions translate to certain responsibilities for you if you -distribute copies of the software, or if you modify it. - - For example, if you distribute copies of such a program, whether -gratis or for a fee, you must give the recipients all the rights that -you have. You must make sure that they, too, receive or can get the -source code. And you must show them these terms so they know their -rights. - - We protect your rights with two steps: (1) copyright the software, and -(2) offer you this license which gives you legal permission to copy, -distribute and/or modify the software. - - Also, for each author's protection and ours, we want to make certain -that everyone understands that there is no warranty for this free -software. If the software is modified by someone else and passed on, we -want its recipients to know that what they have is not the original, so -that any problems introduced by others will not reflect on the original -authors' reputations. - - Finally, any free program is threatened constantly by software -patents. We wish to avoid the danger that redistributors of a free -program will individually obtain patent licenses, in effect making the -program proprietary. To prevent this, we have made it clear that any -patent must be licensed for everyone's free use or not licensed at all. - - The precise terms and conditions for copying, distribution and -modification follow. - -@iftex -@unnumberedsec TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION -@end iftex -@ifinfo -@center TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION -@end ifinfo - -@enumerate 0 -@item -This License applies to any program or other work which contains -a notice placed by the copyright holder saying it may be distributed -under the terms of this General Public License. The ``Program'', below, -refers to any such program or work, and a ``work based on the Program'' -means either the Program or any derivative work under copyright law: -that is to say, a work containing the Program or a portion of it, -either verbatim or with modifications and/or translated into another -language. (Hereinafter, translation is included without limitation in -the term ``modification''.) Each licensee is addressed as ``you''. - -Activities other than copying, distribution and modification are not -covered by this License; they are outside its scope. The act of -running the Program is not restricted, and the output from the Program -is covered only if its contents constitute a work based on the -Program (independent of having been made by running the Program). -Whether that is true depends on what the Program does. - -@item -You may copy and distribute verbatim copies of the Program's -source code as you receive it, in any medium, provided that you -conspicuously and appropriately publish on each copy an appropriate -copyright notice and disclaimer of warranty; keep intact all the -notices that refer to this License and to the absence of any warranty; -and give any other recipients of the Program a copy of this License -along with the Program. - -You may charge a fee for the physical act of transferring a copy, and -you may at your option offer warranty protection in exchange for a fee. - -@item -You may modify your copy or copies of the Program or any portion -of it, thus forming a work based on the Program, and copy and -distribute such modifications or work under the terms of Section 1 -above, provided that you also meet all of these conditions: - -@enumerate a -@item -You must cause the modified files to carry prominent notices -stating that you changed the files and the date of any change. - -@item -You must cause any work that you distribute or publish, that in -whole or in part contains or is derived from the Program or any -part thereof, to be licensed as a whole at no charge to all third -parties under the terms of this License. - -@item -If the modified program normally reads commands interactively -when run, you must cause it, when started running for such -interactive use in the most ordinary way, to print or display an -announcement including an appropriate copyright notice and a -notice that there is no warranty (or else, saying that you provide -a warranty) and that users may redistribute the program under -these conditions, and telling the user how to view a copy of this -License. (Exception: if the Program itself is interactive but -does not normally print such an announcement, your work based on -the Program is not required to print an announcement.) -@end enumerate - -These requirements apply to the modified work as a whole. If -identifiable sections of that work are not derived from the Program, -and can be reasonably considered independent and separate works in -themselves, then this License, and its terms, do not apply to those -sections when you distribute them as separate works. But when you -distribute the same sections as part of a whole which is a work based -on the Program, the distribution of the whole must be on the terms of -this License, whose permissions for other licensees extend to the -entire whole, and thus to each and every part regardless of who wrote it. - -Thus, it is not the intent of this section to claim rights or contest -your rights to work written entirely by you; rather, the intent is to -exercise the right to control the distribution of derivative or -collective works based on the Program. - -In addition, mere aggregation of another work not based on the Program -with the Program (or with a work based on the Program) on a volume of -a storage or distribution medium does not bring the other work under -the scope of this License. - -@item -You may copy and distribute the Program (or a work based on it, -under Section 2) in object code or executable form under the terms of -Sections 1 and 2 above provided that you also do one of the following: - -@enumerate a -@item -Accompany it with the complete corresponding machine-readable -source code, which must be distributed under the terms of Sections -1 and 2 above on a medium customarily used for software interchange; or, - -@item -Accompany it with a written offer, valid for at least three -years, to give any third party, for a charge no more than your -cost of physically performing source distribution, a complete -machine-readable copy of the corresponding source code, to be -distributed under the terms of Sections 1 and 2 above on a medium -customarily used for software interchange; or, - -@item -Accompany it with the information you received as to the offer -to distribute corresponding source code. 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For example, if a patent -license would not permit royalty-free redistribution of the Program by -all those who receive copies directly or indirectly through you, then -the only way you could satisfy both it and this License would be to -refrain entirely from distribution of the Program. - -If any portion of this section is held invalid or unenforceable under -any particular circumstance, the balance of the section is intended to -apply and the section as a whole is intended to apply in other -circumstances. - -It is not the purpose of this section to induce you to infringe any -patents or other property right claims or to contest validity of any -such claims; this section has the sole purpose of protecting the -integrity of the free software distribution system, which is -implemented by public license practices. Many people have made -generous contributions to the wide range of software distributed -through that system in reliance on consistent application of that -system; it is up to the author/donor to decide if he or she is willing -to distribute software through any other system and a licensee cannot -impose that choice. - -This section is intended to make thoroughly clear what is believed to -be a consequence of the rest of this License. - -@item -If the distribution and/or use of the Program is restricted in -certain countries either by patents or by copyrighted interfaces, the -original copyright holder who places the Program under this License -may add an explicit geographical distribution limitation excluding -those countries, so that distribution is permitted only in or among -countries not thus excluded. In such case, this License incorporates -the limitation as if written in the body of this License. - -@item -The Free Software Foundation may publish revised and/or new versions -of the General Public License from time to time. Such new versions will -be similar in spirit to the present version, but may differ in detail to -address new problems or concerns. - -Each version is given a distinguishing version number. If the Program -specifies a version number of this License which applies to it and ``any -later version'', you have the option of following the terms and conditions -either of that version or of any later version published by the Free -Software Foundation. If the Program does not specify a version number of -this License, you may choose any version ever published by the Free Software -Foundation. - -@item -If you wish to incorporate parts of the Program into other free -programs whose distribution conditions are different, write to the author -to ask for permission. For software which is copyrighted by the Free -Software Foundation, write to the Free Software Foundation; we sometimes -make exceptions for this. Our decision will be guided by the two goals -of preserving the free status of all derivatives of our free software and -of promoting the sharing and reuse of software generally. - -@iftex -@heading NO WARRANTY -@end iftex -@ifinfo -@center NO WARRANTY -@end ifinfo - -@item -BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY -FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW@. EXCEPT WHEN -OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES -PROVIDE THE PROGRAM ``AS IS'' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED -OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE@. THE ENTIRE RISK AS -TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU@. 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It is safest -to attach them to the start of each source file to most effectively -convey the exclusion of warranty; and each file should have at least -the ``copyright'' line and a pointer to where the full notice is found. - -@smallexample -@var{one line to give the program's name and an idea of what it does.} -Copyright (C) 19@var{yy} @var{name of author} - -This program is free software; you can redistribute it and/or -modify it under the terms of the GNU General Public License -as published by the Free Software Foundation; either version 2 -of the License, or (at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE@. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -@end smallexample - -Also add information on how to contact you by electronic and paper mail. - -If the program is interactive, make it output a short notice like this -when it starts in an interactive mode: - -@smallexample -Gnomovision version 69, Copyright (C) 19@var{yy} @var{name of author} -Gnomovision comes with ABSOLUTELY NO WARRANTY; for details -type `show w'. This is free software, and you are welcome -to redistribute it under certain conditions; type `show c' -for details. -@end smallexample - -The hypothetical commands @samp{show w} and @samp{show c} should show -the appropriate parts of the General Public License. Of course, the -commands you use may be called something other than @samp{show w} and -@samp{show c}; they could even be mouse-clicks or menu items---whatever -suits your program. - -You should also get your employer (if you work as a programmer) or your -school, if any, to sign a ``copyright disclaimer'' for the program, if -necessary. Here is a sample; alter the names: - -@smallexample -@group -Yoyodyne, Inc., hereby disclaims all copyright -interest in the program `Gnomovision' -(which makes passes at compilers) written -by James Hacker. - -@var{signature of Ty Coon}, 1 April 1989 -Ty Coon, President of Vice -@end group -@end smallexample - -This General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications -with the library. If this is what you want to do, use the GNU Library -General Public License instead of this License. - -@node Index, , GNU General Public License, Top -@unnumbered Index - -@printindex cp - -@contents -@bye diff --git a/t/chkstow.t b/t/chkstow.t index f75a88a..6e066c2 100755 --- a/t/chkstow.t +++ b/t/chkstow.t @@ -1,64 +1,75 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing cleanup_invalid_links() # -# load as a library -BEGIN { - use lib qw(.); - require "t/util.pm"; - require "chkstow"; -} +use strict; +use warnings; + +use testutil; +require "chkstow"; use Test::More tests => 7; use Test::Output; use English qw(-no_match_vars); -### setup -eval { remove_dir('t/target'); }; -make_dir('t/target'); - -chdir 't/target'; +init_test_dirs(); +cd("$TEST_DIR/target"); # setup stow directory -make_dir('stow'); +make_path('stow'); make_file('stow/.stow'); # perl -make_dir('stow/perl/bin'); +make_path('stow/perl/bin'); make_file('stow/perl/bin/perl'); make_file('stow/perl/bin/a2p'); -make_dir('stow/perl/info'); +make_path('stow/perl/info'); make_file('stow/perl/info/perl'); -make_dir('stow/perl/lib/perl'); -make_dir('stow/perl/man/man1'); +make_path('stow/perl/lib/perl'); +make_path('stow/perl/man/man1'); make_file('stow/perl/man/man1/perl.1'); # emacs -make_dir('stow/emacs/bin'); +make_path('stow/emacs/bin'); make_file('stow/emacs/bin/emacs'); make_file('stow/emacs/bin/etags'); -make_dir('stow/emacs/info'); +make_path('stow/emacs/info'); make_file('stow/emacs/info/emacs'); -make_dir('stow/emacs/libexec/emacs'); -make_dir('stow/emacs/man/man1'); +make_path('stow/emacs/libexec/emacs'); +make_path('stow/emacs/man/man1'); make_file('stow/emacs/man/man1/emacs.1'); #setup target directory -make_dir('bin'); +make_path('bin'); make_link('bin/a2p', '../stow/perl/bin/a2p'); make_link('bin/emacs', '../stow/emacs/bin/emacs'); make_link('bin/etags', '../stow/emacs/bin/etags'); make_link('bin/perl', '../stow/perl/bin/perl'); -make_dir('info'); +make_path('info'); make_link('info/emacs', '../stow/emacs/info/emacs'); make_link('info/perl', '../stow/perl/info/perl'); make_link('lib', 'stow/perl/lib'); make_link('libexec', 'stow/emacs/libexec'); -make_dir('man'); -make_dir('man/man1'); +make_path('man'); +make_path('man/man1'); make_link('man/man1/emacs', '../../stow/emacs/man/man1/emacs.1'); make_link('man/man1/perl', '../../stow/perl/man/man1/perl.1'); @@ -67,28 +78,28 @@ sub run_chkstow() { check_stow(); } -local @ARGV = ('-t', '.', '-b',); +local @ARGV = ('-t', '.', '-b'); stderr_like( \&run_chkstow, qr{\Askipping .*stow.*\z}xms, "Skip directories containing .stow"); # squelch warn so that check_stow doesn't carp about skipping .stow all the time -$SIG{'__WARN__'} = sub { }; +$SIG{__WARN__} = sub { }; -@ARGV = ('-t', '.', '-l',); +@ARGV = ('-t', '.', '-l'); stdout_like( \&run_chkstow, - qr{emacs$perl$stow}xms, + qr{emacs\nperl\nstow\n}xms, "List packages"); -@ARGV = ('-t', '.', '-b',); +@ARGV = ('-t', '.', '-b'); stdout_like( \&run_chkstow, qr{\A\z}xms, "No bogus links exist"); -@ARGV = ('-t', '.', '-a',); +@ARGV = ('-t', '.', '-a'); stdout_like( \&run_chkstow, qr{\A\z}xms, @@ -96,20 +107,21 @@ stdout_like( # Create an alien make_file('bin/alien'); -@ARGV = ('-t', '.', '-a',); +@ARGV = ('-t', '.', '-a'); stdout_like( \&run_chkstow, qr{Unstowed\ file:\ ./bin/alien}xms, "Aliens exist"); -make_link('bin/link', 'ireallyhopethisfiledoesn/t.exist'); -@ARGV = ('-t', '.', '-b',); +make_invalid_link('bin/link', 'ireallyhopethisfiledoesn/t.exist'); +@ARGV = ('-t', '.', '-b'); stdout_like( \&run_chkstow, qr{Bogus\ link:\ ./bin/link}xms, "Bogus links exist"); -@ARGV = ('-b',); +@ARGV = ('-b'); process_options(); +our $Target; ok($Target == q{/usr/local}, "Default target is /usr/local/"); diff --git a/t/cleanup_invalid_links.t b/t/cleanup_invalid_links.t old mode 100644 new mode 100755 index 8273926..a859356 --- a/t/cleanup_invalid_links.t +++ b/t/cleanup_invalid_links.t @@ -1,92 +1,98 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing cleanup_invalid_links() # -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } +use strict; +use warnings; -use Test::More tests => 3; +use Test::More tests => 4; use English qw(-no_match_vars); -# local utility -sub reset_state { - @Tasks = (); - @Conflicts = (); - %Link_Task_For = (); - %Dir_Task_For = (); - %Options = (); - return; -} +use testutil; +use Stow::Util; -### setup -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); +init_test_dirs(); +cd("$TEST_DIR/target"); -chdir 't/target'; -$Stow_Path= '../stow'; +my $stow; # Note that each of the following tests use a distinct set of files -# -# nothing to clean in a simple tree -# -reset_state(); -$Option{'verbose'} = 1; +subtest('nothing to clean in a simple tree' => sub { + plan tests => 1; -make_dir('../stow/pkg1/bin1'); -make_file('../stow/pkg1/bin1/file1'); -make_link('bin1','../stow/pkg1/bin1'); + make_path('../stow/pkg1/bin1'); + make_file('../stow/pkg1/bin1/file1'); + make_link('bin1', '../stow/pkg1/bin1'); -cleanup_invalid_links('./'); -is( - scalar @Tasks, 0 - => 'nothing to clean' -); + $stow = new_Stow(); + $stow->cleanup_invalid_links('./'); + is( + scalar($stow->get_tasks), 0 + => 'nothing to clean' + ); +}); -# -# cleanup a bad link in a simple tree -# -reset_state(); -$Option{'verbose'} = 0; +subtest('cleanup an orphaned owned link in a simple tree' => sub { + plan tests => 3; -make_dir('bin2'); -make_dir('../stow/pkg2/bin2'); -make_file('../stow/pkg2/bin2/file2a'); -make_link('bin2/file2a','../../stow/pkg2/bin2/file2a'); -make_link('bin2/file2b','../../stow/pkg2/bin2/file2b'); + make_path('bin2'); + make_path('../stow/pkg2/bin2'); + make_file('../stow/pkg2/bin2/file2a'); + make_link('bin2/file2a', '../../stow/pkg2/bin2/file2a'); + make_invalid_link('bin2/file2b', '../../stow/pkg2/bin2/file2b'); -cleanup_invalid_links('bin2'); -ok( - scalar(@Conflicts) == 0 && - scalar @Tasks == 1 && - $Link_Task_For{'bin2/file2b'}->{'action'} eq 'remove' - => 'cleanup a bad link' -); + $stow = new_Stow(); + $stow->cleanup_invalid_links('bin2'); + is($stow->get_conflict_count, 0, 'no conflicts cleaning up bad link'); + is(scalar($stow->get_tasks), 1, 'one task cleaning up bad link'); + is($stow->link_task_action('bin2/file2b'), 'remove', 'removal task for bad link'); +}); -#use Data::Dumper; -#print Dumper(\@Tasks,\%Link_Task_For,\%Dir_Task_For); +subtest("don't cleanup a bad link not owned by stow" => sub { + plan tests => 2; -# -# dont cleanup a bad link not owned by stow -# -reset_state(); -$Option{'verbose'} = 0; + make_path('bin3'); + make_path('../stow/pkg3/bin3'); + make_file('../stow/pkg3/bin3/file3a'); + make_link('bin3/file3a', '../../stow/pkg3/bin3/file3a'); + make_invalid_link('bin3/file3b', '../../empty'); -make_dir('bin3'); -make_dir('../stow/pkg3/bin3'); -make_file('../stow/pkg3/bin3/file3a'); -make_link('bin3/file3a','../../stow/pkg3/bin3/file3a'); -make_link('bin3/file3b','../../empty'); + $stow = new_Stow(); + $stow->cleanup_invalid_links('bin3'); + is($stow->get_conflict_count, 0, 'no conflicts cleaning up bad link not owned by stow'); + is(scalar($stow->get_tasks), 0, 'no tasks cleaning up bad link not owned by stow'); +}); -cleanup_invalid_links('bin3'); -ok( - scalar(@Conflicts) == 0 && - scalar @Tasks == 0 - => 'dont cleanup a bad link not owned by stow' -); +subtest("don't cleanup a valid link in the target not owned by stow" => sub { + plan tests => 2; + make_path('bin4'); + make_path('../stow/pkg4/bin4'); + make_file('../stow/pkg4/bin4/file3a'); + make_link('bin4/file3a', '../../stow/pkg4/bin4/file3a'); + make_file("unowned"); + make_link('bin4/file3b', '../unowned'); + $stow = new_Stow(); + $stow->cleanup_invalid_links('bin4'); + is($stow->get_conflict_count, 0, 'no conflicts cleaning up bad link not owned by stow'); + is(scalar($stow->get_tasks), 0, 'no tasks cleaning up bad link not owned by stow'); +}); diff --git a/t/cli.t b/t/cli.t new file mode 100755 index 0000000..3bd3194 --- /dev/null +++ b/t/cli.t @@ -0,0 +1,69 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Test processing of CLI options. +# + +use strict; +use warnings; + +use File::Basename; +use Test::More tests => 3; + +use testutil; + +#init_test_dirs(); + +# Since here we're doing black-box testing on the stow executable, +# this looks like it should be robust: +# +#my $STOW = dirname(__FILE__) . '/../bin/stow'; +# +# but unfortunately it breaks things like "make distcheck", which +# builds the stow script into a separate path like +# +# stow-2.3.0/_build/sub/bin +# +# before cd'ing to something like +# +# stow-2.3.0/_build/sub +# +# and then running the tests via: +# +# make check-TESTS +# make[2]: Entering directory '/path/to/stow/src/stow-2.3.0/_build/sub' +# dir=../../t; \ +# /usr/bin/perl -Ibin -Ilib -I../../t -MTest::Harness -e 'runtests(@ARGV)' "${dir#./}"/*.t +# +# So the simplest solution is to hardcode an assumption that we run +# tests either from somewhere like this during distcheck: +# +# stow-2.3.0/_build/sub +# +# or from the top of the source tree during development. This can be done +# via the following, which also follows the KISS principle: +my $STOW = "$^X bin/stow"; + +`$STOW --help`; +is($?, 0, "--help should return 0 exit code"); + +my $err = `$STOW --foo 2>&1`; +is($? >> 8, 1, "unrecognised option should return 1 exit code"); +like($err, qr/^Unknown option: foo$/m, "unrecognised option should be listed"); + +# vim:ft=perl diff --git a/t/cli_options.t b/t/cli_options.t new file mode 100755 index 0000000..8b73bf5 --- /dev/null +++ b/t/cli_options.t @@ -0,0 +1,112 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Test processing of CLI options. +# + +use strict; +use warnings; + +use Test::More tests => 10; + +use testutil; + +require 'stow'; + +init_test_dirs(); + +local @ARGV = ( + '-v', + '-d', "$TEST_DIR/stow", + '-t', "$TEST_DIR/target", + 'dummy' +); + +my ($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); + +is($options->{verbose}, 1, 'verbose option'); +is($options->{dir}, "$TEST_DIR/stow", 'stow dir option'); + +my $stow = new_Stow(%$options); + +is($stow->{stow_path}, "../stow" => 'stow dir'); +is_deeply($pkgs_to_stow, [ 'dummy' ] => 'default to stow'); + +# +# Check mixed up package options +# +local @ARGV = ( + '-v', + '-D', 'd1', 'd2', + '-S', 's1', + '-R', 'r1', + '-D', 'd3', + '-S', 's2', 's3', + '-R', 'r2', +); + +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is_deeply($pkgs_to_delete, [ 'd1', 'd2', 'r1', 'd3', 'r2' ] => 'mixed deletes'); +is_deeply($pkgs_to_stow, [ 's1', 'r1', 's2', 's3', 'r2' ] => 'mixed stows'); + +# +# Check setting deferred paths +# +local @ARGV = ( + '--defer=man', + '--defer=info', + 'dummy' +); +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is_deeply($options->{defer}, [ qr(\Aman), qr(\Ainfo) ] => 'defer man and info'); + +# +# Check setting override paths +# +local @ARGV = ( + '--override=man', + '--override=info', + 'dummy' +); +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is_deeply($options->{override}, [qr(\Aman), qr(\Ainfo)] => 'override man and info'); + +# +# Check setting ignored paths +# +local @ARGV = ( + '--ignore=~', + '--ignore=\.#.*', + 'dummy' +); +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is_deeply($options->{ignore}, [ qr(~\z), qr(\.#.*\z) ] => 'ignore temp files'); + +# +# Check that expansion not applied. +# +local @ARGV = ( + "--target=$TEST_DIR/".'$HOME', + 'dummy' +); +make_path("$TEST_DIR/".'$HOME'); +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is($options->{target}, "$TEST_DIR/".'$HOME', 'no expansion'); +remove_dir("$TEST_DIR/".'$HOME'); + +# vim:ft=perl diff --git a/t/defer.t b/t/defer.t old mode 100644 new mode 100755 index a4f8cf7..4434e0f --- a/t/defer.t +++ b/t/defer.t @@ -1,22 +1,44 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing defer(). # -# load as a library -BEGIN { use lib qw(. ..); require "stow"; } +use strict; +use warnings; + +use testutil; use Test::More tests => 4; -$Option{'defer'} = [ 'man' ]; -ok(defer('man/man1/file.1') => 'simple success'); +init_test_dirs(); +cd("$TEST_DIR/target"); -$Option{'defer'} = [ 'lib' ]; -ok(!defer('man/man1/file.1') => 'simple failure'); +my $stow; -$Option{'defer'} = [ 'lib', 'man', 'share' ]; -ok(defer('man/man1/file.1') => 'complex success'); +$stow = new_Stow(defer => [ 'man' ]); +ok($stow->defer('man/man1/file.1') => 'simple success'); -$Option{'defer'} = [ 'lib', 'man', 'share' ]; -ok(!defer('bin/file') => 'complex failure'); +$stow = new_Stow(defer => [ 'lib' ]); +ok(! $stow->defer('man/man1/file.1') => 'simple failure'); + +$stow = new_Stow(defer => [ 'lib', 'man', 'share' ]); +ok($stow->defer('man/man1/file.1') => 'complex success'); + +$stow = new_Stow(defer => [ 'lib', 'man', 'share' ]); +ok(! $stow->defer('bin/file') => 'complex failure'); diff --git a/t/dotfiles.t b/t/dotfiles.t new file mode 100755 index 0000000..643b873 --- /dev/null +++ b/t/dotfiles.t @@ -0,0 +1,235 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Test case for dotfiles special processing +# + +use strict; +use warnings; + +use Test::More tests => 12; +use English qw(-no_match_vars); + +use Stow::Util qw(adjust_dotfile unadjust_dotfile); +use testutil; + +init_test_dirs(); +cd("$TEST_DIR/target"); + +subtest('adjust_dotfile()', sub { + plan tests => 4; + my @TESTS = ( + ['file'], + ['dot-'], + ['dot-.'], + ['dot-file', '.file'], + ); + for my $test (@TESTS) { + my ($input, $expected) = @$test; + $expected ||= $input; + is(adjust_dotfile($input), $expected); + } +}); + +subtest('unadjust_dotfile()', sub { + plan tests => 4; + my @TESTS = ( + ['file'], + ['.'], + ['..'], + ['.file', 'dot-file'], + ); + for my $test (@TESTS) { + my ($input, $expected) = @$test; + $expected ||= $input; + is(unadjust_dotfile($input), $expected); + } +}); + +my $stow; + +subtest("stow dot-foo as .foo", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + make_path('../stow/dotfiles'); + make_file('../stow/dotfiles/dot-foo'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('.foo'), + '../stow/dotfiles/dot-foo', + => 'processed dotfile' + ); +}); + +subtest("stow dot-foo as dot-foo without --dotfile enabled", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 0); + make_path('../stow/dotfiles'); + make_file('../stow/dotfiles/dot-foo'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('dot-foo'), + '../stow/dotfiles/dot-foo', + => 'unprocessed dotfile' + ); +}); + +subtest("stow dot-emacs dir as .emacs", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-emacs'); + make_file('../stow/dotfiles/dot-emacs/init.el'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('.emacs'), + '../stow/dotfiles/dot-emacs', + => 'processed dotfile dir' + ); +}); + +subtest("stow dir marked with 'dot' prefix when directory exists in target", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-emacs.d'); + make_file('../stow/dotfiles/dot-emacs.d/init.el'); + make_path('.emacs.d'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('.emacs.d/init.el'), + '../../stow/dotfiles/dot-emacs.d/init.el', + => 'processed dotfile dir when dir exists (1 level)' + ); +}); + +subtest("stow dir marked with 'dot' prefix when directory exists in target (2 levels)", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-emacs.d/dot-emacs.d'); + make_file('../stow/dotfiles/dot-emacs.d/dot-emacs.d/init.el'); + make_path('.emacs.d'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('.emacs.d/.emacs.d'), + '../../stow/dotfiles/dot-emacs.d/dot-emacs.d', + => 'processed dotfile dir exists (2 levels)' + ); +}); + +subtest("stow dir marked with 'dot' prefix when directory exists in target", sub { + plan tests => 1; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-one/dot-two'); + make_file('../stow/dotfiles/dot-one/dot-two/three'); + make_path('.one/.two'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('./.one/.two/three'), + '../../../stow/dotfiles/dot-one/dot-two/three', + => 'processed dotfile 2 dir exists (2 levels)' + ); + +}); + +subtest("dot-. should not have that part expanded.", sub { + plan tests => 2; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles'); + make_file('../stow/dotfiles/dot-'); + + make_path('../stow/dotfiles/dot-.'); + make_file('../stow/dotfiles/dot-./foo'); + + $stow->plan_stow('dotfiles'); + $stow->process_tasks(); + is( + readlink('dot-'), + '../stow/dotfiles/dot-', + => 'processed dotfile' + ); + is( + readlink('dot-.'), + '../stow/dotfiles/dot-.', + => 'unprocessed dotfile' + ); +}); + +subtest("unstow .bar from dot-bar", sub { + plan tests => 3; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles'); + make_file('../stow/dotfiles/dot-bar'); + make_link('.bar', '../stow/dotfiles/dot-bar'); + + $stow->plan_unstow('dotfiles'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + ok(-f '../stow/dotfiles/dot-bar', 'package file untouched'); + ok(! -e '.bar' => '.bar was unstowed'); +}); + +subtest("unstow dot-emacs.d/init.el when .emacs.d/init.el in target", sub { + plan tests => 4; + $stow = new_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-emacs.d'); + make_file('../stow/dotfiles/dot-emacs.d/init.el'); + make_path('.emacs.d'); + make_link('.emacs.d/init.el', '../../stow/dotfiles/dot-emacs.d/init.el'); + + $stow->plan_unstow('dotfiles'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + ok(-f '../stow/dotfiles/dot-emacs.d/init.el'); + ok(! -e '.emacs.d/init.el', '.emacs.d/init.el unstowed'); + ok(-d '.emacs.d/' => '.emacs.d left behind'); +}); + +subtest("unstow dot-emacs.d/init.el in --compat mode", sub { + plan tests => 4; + $stow = new_compat_Stow(dir => '../stow', dotfiles => 1); + + make_path('../stow/dotfiles/dot-emacs.d'); + make_file('../stow/dotfiles/dot-emacs.d/init.el'); + make_path('.emacs.d'); + make_link('.emacs.d/init.el', '../../stow/dotfiles/dot-emacs.d/init.el'); + + $stow->plan_unstow('dotfiles'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + ok(-f '../stow/dotfiles/dot-emacs.d/init.el'); + ok(! -e '.emacs.d/init.el', '.emacs.d/init.el unstowed'); + ok(-d '.emacs.d/' => '.emacs.d left behind'); +}); diff --git a/t/examples.t b/t/examples.t old mode 100644 new mode 100755 index 839f822..376de39 --- a/t/examples.t +++ b/t/examples.t @@ -1,72 +1,68 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing examples from the documentation # -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } +use strict; +use warnings; -use Test::More tests => 4; +use testutil; + +use Test::More tests => 10; use English qw(-no_match_vars); -# local utility -sub reset_state { - @Tasks = (); - @Conflicts = (); - %Link_Task_For = (); - %Dir_Task_For = (); - %Options = (); - return; -} +init_test_dirs(); +cd("$TEST_DIR/target"); -### setup -eval { remove_dir('t/target'); }; -make_dir('t/target/stow'); - -chdir 't/target'; -$Stow_Path= 'stow'; +my $stow; ## set up some fake packages to stow # perl -make_dir('stow/perl/bin'); +make_path('stow/perl/bin'); make_file('stow/perl/bin/perl'); make_file('stow/perl/bin/a2p'); -make_dir('stow/perl/info'); +make_path('stow/perl/info'); make_file('stow/perl/info/perl'); -make_dir('stow/perl/lib/perl'); -make_dir('stow/perl/man/man1'); +make_path('stow/perl/lib/perl'); +make_path('stow/perl/man/man1'); make_file('stow/perl/man/man1/perl.1'); # emacs -make_dir('stow/emacs/bin'); +make_path('stow/emacs/bin'); make_file('stow/emacs/bin/emacs'); make_file('stow/emacs/bin/etags'); -make_dir('stow/emacs/info'); +make_path('stow/emacs/info'); make_file('stow/emacs/info/emacs'); -make_dir('stow/emacs/libexec/emacs'); -make_dir('stow/emacs/man/man1'); +make_path('stow/emacs/libexec/emacs'); +make_path('stow/emacs/man/man1'); make_file('stow/emacs/man/man1/emacs.1'); # # stow perl into an empty target # -reset_state(); -$Option{'verbose'} = 0; -make_dir('stow/perl/bin'); -make_file('stow/perl/bin/perl'); -make_file('stow/perl/bin/a2p'); -make_dir('stow/perl/info'); -make_dir('stow/perl/lib/perl'); -make_dir('stow/perl/man/man1'); -make_file('stow/perl/man/man1/perl.1'); - -stow_contents('stow/perl','./','stow/perl'); -process_tasks(); +$stow = new_Stow(dir => 'stow'); +$stow->plan_stow('perl'); +$stow->process_tasks(); ok( - scalar(@Conflicts) == 0 && + $stow->get_conflict_count == 0 && -l 'bin' && -l 'info' && -l 'lib' && -l 'man' && readlink('bin') eq 'stow/perl/bin' && readlink('info') eq 'stow/perl/info' && @@ -75,12 +71,9 @@ ok( => 'stow perl into an empty target' ); - # # stow perl into a non-empty target # -reset_state(); -$Option{'verbose'} = 0; # clean up previous stow remove_link('bin'); @@ -88,14 +81,15 @@ remove_link('info'); remove_link('lib'); remove_link('man'); -make_dir('bin'); -make_dir('lib'); -make_dir('man/man1'); +make_path('bin'); +make_path('lib'); +make_path('man/man1'); -stow_contents('stow/perl','./','stow/perl'); -process_tasks(); +$stow = new_Stow(dir => 'stow'); +$stow->plan_stow('perl'); +$stow->process_tasks(); ok( - scalar(@Conflicts) == 0 && + $stow->get_conflict_count == 0 && -d 'bin' && -d 'lib' && -d 'man' && -d 'man/man1' && -l 'info' && -l 'bin/perl' && -l 'bin/a2p' && -l 'lib/perl' && -l 'man/man1/perl.1' && @@ -111,8 +105,6 @@ ok( # # Install perl into an empty target and then install emacs # -reset_state(); -$Option{'verbose'} = 0; # clean up previous stow remove_link('info'); @@ -120,11 +112,11 @@ remove_dir('bin'); remove_dir('lib'); remove_dir('man'); -stow_contents('stow/perl', './','stow/perl'); -stow_contents('stow/emacs','./','stow/emacs'); -process_tasks(); +$stow = new_Stow(dir => 'stow'); +$stow->plan_stow('perl', 'emacs'); +$stow->process_tasks(); +is($stow->get_conflict_count, 0, 'no conflicts'); ok( - scalar(@Conflicts) == 0 && -d 'bin' && -l 'bin/perl' && -l 'bin/emacs' && @@ -164,41 +156,38 @@ ok( # Q. the original empty directory should remain # behaviour is the same as if the empty directory had nothing to do with stow # -reset_state(); -$Option{'verbose'} = 0; -make_dir('stow/pkg1a/bin1'); -make_dir('stow/pkg1b/bin1'); +make_path('stow/pkg1a/bin1'); +make_path('stow/pkg1b/bin1'); make_file('stow/pkg1b/bin1/file1b'); -stow_contents('stow/pkg1a', './', 'stow/pkg1a'); -stow_contents('stow/pkg1b', './', 'stow/pkg1b'); -unstow_contents('stow/pkg1b', './', 'stow/pkg1b'); -process_tasks(); - -ok( - scalar(@Conflicts) == 0 && - -d 'bin1' - => 'bug 1: stowing empty dirs' -); - +$stow = new_Stow(dir => 'stow'); +$stow->plan_stow('pkg1a', 'pkg1b'); +$stow->plan_unstow('pkg1b'); +$stow->process_tasks(); +is($stow->get_conflict_count, 0, 'no conflicts stowing empty dirs'); +ok(-d 'bin1' => 'bug 1: stowing empty dirs'); # # BUG 2: split open tree-folding symlinks pointing inside different stow # directories # -reset_state(); -$Option{'verbose'} = 0; - -make_dir('stow2a/pkg2a/bin2'); +make_path('stow2a/pkg2a/bin2'); make_file('stow2a/pkg2a/bin2/file2a'); make_file('stow2a/.stow'); -make_dir('stow2b/pkg2b/bin2'); +make_path('stow2b/pkg2b/bin2'); make_file('stow2b/pkg2b/bin2/file2b'); make_file('stow2b/.stow'); -stow_contents('stow2a/pkg2a','./', 'stow2a/pkg2a'); -stow_contents('stow2b/pkg2b','./', 'stow2b/pkg2b'); -process_tasks(); +$stow = new_Stow(dir => 'stow2a'); +$stow->plan_stow('pkg2a'); +$stow->set_stow_dir('stow2b'); +$stow->plan_stow('pkg2b'); +$stow->process_tasks(); + +is($stow->get_conflict_count, 0, 'no conflicts splitting tree-folding symlinks'); +ok(-d 'bin2' => 'tree got split by packages from multiple stow directories'); +ok(-f 'bin2/file2a' => 'file from 1st stow dir'); +ok(-f 'bin2/file2b' => 'file from 2nd stow dir'); ## Finish this test diff --git a/t/find_stowed_path.t b/t/find_stowed_path.t old mode 100644 new mode 100755 index 03a7c73..8ae4fca --- a/t/find_stowed_path.t +++ b/t/find_stowed_path.t @@ -1,51 +1,148 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # -# Testing find_stowed_path() +# Testing Stow:: find_stowed_path() # -BEGIN { require "t/util.pm"; require "stow"; } +use strict; +use warnings; -use Test::More tests => 5; +use Test::More tests => 10; -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); +use testutil; +use Stow::Util qw(set_debug_level); -$Stow_Path = 't/stow'; -is( - find_stowed_path('t/target/a/b/c', '../../../stow/a/b/c'), - 't/stow/a/b/c', - => 'from root' -); +init_test_dirs(); -$Stow_Path = '../stow'; -is( - find_stowed_path('a/b/c','../../../stow/a/b/c'), - '../stow/a/b/c', - => 'from target directory' -); +subtest("find link to a stowed path with relative target" => sub { + plan tests => 3; -$Stow_Path = 't/target/stow'; + # This is a relative path, unlike $ABS_TEST_DIR below. + my $target = "$TEST_DIR/target"; -is( - find_stowed_path('t/target/a/b/c', '../../stow/a/b/c'), - 't/target/stow/a/b/c', - => 'stow is subdir of target directory' -); + my $stow = new_Stow(dir => "$TEST_DIR/stow", target => $target); + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../../stow/a/b/c"); + is($path, "../stow/a/b/c", "path"); + is($stow_path, "../stow", "stow path"); + is($package, "a", "package"); +}); -is( - find_stowed_path('t/target/a/b/c','../../empty'), - '', - => 'target is not stowed' -); +my $stow = new_Stow(dir => "$ABS_TEST_DIR/stow", target => "$ABS_TEST_DIR/target"); -make_dir('t/target/stow2'); -make_file('t/target/stow2/.stow'); +# Required by creation of stow2 and stow2/.stow below +cd("$ABS_TEST_DIR/target"); -is( - find_stowed_path('t/target/a/b/c','../../stow2/a/b/c'), - 't/target/stow2/a/b/c' - => q(detect alternate stow directory) -); +subtest("find link to a stowed path" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../../stow/a/b/c"); + is($path, "../stow/a/b/c", "path from target directory"); + is($stow_path, "../stow", "stow path from target directory"); + is($package, "a", "from target directory"); +}); + +subtest("find link to alien path not owned by Stow" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../alien"); + is($path, "", "alien is not stowed, so path is empty"); + is($stow_path, "", "alien, so stow path is empty"); + is($package, "", "alien is not stowed in any package"); +}); + +# Make a second stow directory within the target directory, so that we +# can check that links to package files within that stow directory are +# detected correctly. +make_path("stow2"); + +# However this second stow directory is still "alien" to stow until we +# put a .stow file in it. So first test a symlink pointing to a path +# within this second stow directory +subtest("second stow dir still alien without .stow" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../stow2/a/b/c"); + is($path, "", "stow2 not a stow dir yet, so path is empty"); + is($stow_path, "", "stow2 not a stow dir yet so stow path is empty"); + is($package, "", "not stowed in any recognised package yet"); +}); + +# Now make stow2 a secondary stow directory and test that +make_file("stow2/.stow"); + +subtest(".stow makes second stow dir owned by Stow" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../stow2/a/b/c"); + is($path, "stow2/a/b/c", "path"); + is($stow_path, "stow2", "stow path"); + is($package, "a", "detect alternate stow directory"); +}); + +subtest("relative symlink pointing to target dir" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../.."); + # Technically the target dir is not owned by Stow, since + # Stow won't touch the target dir itself, only its contents. + is($path, "", "path"); + is($stow_path, "", "stow path"); + is($package, "", "corner case - link points to target dir"); +}); + +subtest("relative symlink pointing to parent of target dir" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../../.."); + is($path, "", "path"); + is($stow_path, "", "stow path"); + is($package, "", "corner case - link points to parent of target dir"); +}); + +subtest("unowned symlink pointing to absolute path inside target" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "$ABS_TEST_DIR/target/d"); + is($path, "", "path"); + is($stow_path, "", "stow path"); + is($package, "", "symlink unowned by Stow points to absolute path outside target directory"); +}); + +subtest("unowned symlink pointing to absolute path outside target" => sub { + plan tests => 3; + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "/dev/null"); + is($path, "", "path"); + is($stow_path, "", "stow path"); + is($package, "", "symlink unowned by Stow points to absolute path outside target directory"); +}); + +# Now make stow2 the primary stow directory and test that it still +# works when the stow directory is under the target directory +$stow->set_stow_dir("$ABS_TEST_DIR/target/stow2"); + +subtest("stow2 becomes the primary stow directory" => sub { + plan tests => 3; + + my ($path, $stow_path, $package) = + $stow->find_stowed_path("a/b/c", "../../stow2/a/b/c"); + is($path, "stow2/a/b/c", "path in stow2"); + is($stow_path, "stow2", "stow path for stow2"); + is($package, "a", "stow2 is subdir of target directory"); +}); diff --git a/t/foldable.t b/t/foldable.t old mode 100644 new mode 100755 index e4e4fec..e528723 --- a/t/foldable.t +++ b/t/foldable.t @@ -1,74 +1,82 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing foldable() # -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } +use strict; +use warnings; + +use testutil; use Test::More tests => 4; use English qw(-no_match_vars); -### setup -# be very careful with these -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); +init_test_dirs(); +cd("$TEST_DIR/target"); -chdir 't/target'; -$Stow_Path= '../stow'; +my $stow = new_Stow(dir => '../stow'); # Note that each of the following tests use a distinct set of files # # can fold a simple tree # -$Option{'verbose'} = 0; -make_dir('../stow/pkg1/bin1'); +make_path('../stow/pkg1/bin1'); make_file('../stow/pkg1/bin1/file1'); -make_dir('bin1'); +make_path('bin1'); make_link('bin1/file1','../../stow/pkg1/bin1/file1'); -is( foldable('bin1'), '../stow/pkg1/bin1' => q(can fold a simple tree) ); +is( $stow->foldable('bin1'), '../stow/pkg1/bin1' => q(can fold a simple tree) ); # # can't fold an empty directory # -$Option{'verbose'} = 0; -make_dir('../stow/pkg2/bin2'); +make_path('../stow/pkg2/bin2'); make_file('../stow/pkg2/bin2/file2'); -make_dir('bin2'); +make_path('bin2'); -is( foldable('bin2'), '' => q(can't fold an empty directory) ); +is( $stow->foldable('bin2'), '' => q(can't fold an empty directory) ); # # can't fold if dir contains a non-link # -$Option{'verbose'} = 0; -make_dir('../stow/pkg3/bin3'); +make_path('../stow/pkg3/bin3'); make_file('../stow/pkg3/bin3/file3'); -make_dir('bin3'); +make_path('bin3'); make_link('bin3/file3','../../stow/pkg3/bin3/file3'); make_file('bin3/non-link'); -is( foldable('bin3'), '' => q(can't fold a dir containing non-links) ); +is( $stow->foldable('bin3'), '' => q(can't fold a dir containing non-links) ); # # can't fold if links point to different directories # -$Option{'verbose'} = 0; -make_dir('bin4'); -make_dir('../stow/pkg4a/bin4'); +make_path('bin4'); +make_path('../stow/pkg4a/bin4'); make_file('../stow/pkg4a/bin4/file4a'); make_link('bin4/file4a','../../stow/pkg4a/bin4/file4a'); -make_dir('../stow/pkg4b/bin4'); +make_path('../stow/pkg4b/bin4'); make_file('../stow/pkg4b/bin4/file4b'); make_link('bin4/file4b','../../stow/pkg4b/bin4/file4b'); -is( foldable('bin4'), '' => q(can't fold if links point to different dirs) ); +is( $stow->foldable('bin4'), '' => q(can't fold if links point to different dirs) ); diff --git a/t/ignore.t b/t/ignore.t new file mode 100755 index 0000000..3da9dd4 --- /dev/null +++ b/t/ignore.t @@ -0,0 +1,306 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Testing ignore lists. +# + +use strict; +use warnings; + +use File::Temp qw(tempdir); +use Test::More tests => 287; + +use testutil; +use Stow::Util qw(join_paths); + +init_test_dirs(); +cd("$TEST_DIR/target"); + +my $stow = new_Stow(); + +sub test_ignores { + my ($stow_path, $package, $context, @tests) = @_; + $context ||= ''; + while (@tests) { + my $path = shift @tests; + my $should_ignore = shift @tests; + my $not = $should_ignore ? '' : ' not'; + my $was_ignored = $stow->ignore($stow_path, $package, $path); + is( + $was_ignored, $should_ignore, + "Should$not ignore $path $context" + ); + } +} + +sub test_local_ignore_list_always_ignored_at_top_level { + my ($stow_path, $package, $context) = @_; + test_ignores( + $stow_path, $package, $context, + $Stow::LOCAL_IGNORE_FILE => 1, + "subdir/" . $Stow::LOCAL_IGNORE_FILE => 0, + ); +} + +sub test_built_in_list { + my ($stow_path, $package, $context, $expect_ignores) = @_; + + for my $ignored ('CVS', '.cvsignore', '#autosave#') { + for my $path ($ignored, "foo/bar/$ignored") { + my $suffix = "$path.suffix"; + (my $prefix = $path) =~ s!([^/]+)$!prefix.$1!; + + test_ignores( + $stow_path, $package, $context, + $path => $expect_ignores, + $prefix => 0, + $suffix => 0, + ); + } + } + + # The pattern catching lock files allows suffixes but not prefixes + for my $ignored ('.#lock-file') { + for my $path ($ignored, "foo/bar/$ignored") { + my $suffix = "$path.suffix"; + (my $prefix = $path) =~ s!([^/]+)$!prefix.$1!; + + test_ignores( + $stow_path, $package, $context, + $path => $expect_ignores, + $prefix => 0, + $suffix => $expect_ignores, + ); + } + } +} + +sub test_user_global_list { + my ($stow_path, $package, $context, $expect_ignores) = @_; + + for my $path ('', 'foo/bar/') { + test_ignores( + $stow_path, $package, $context, + $path . 'exact' => $expect_ignores, + $path . '0exact' => 0, + $path . 'exact1' => 0, + $path . '0exact1' => 0, + + $path . 'substring' => 0, + $path . '0substring' => 0, + $path . 'substring1' => 0, + $path . '0substring1' => $expect_ignores, + ); + } +} + +sub setup_user_global_list { + # Now test with global ignore list in home directory + $ENV{HOME} = tempdir(); + make_file(join_paths($ENV{HOME}, $Stow::GLOBAL_IGNORE_FILE), <invalidate_memoized_regexp($local_ignore); + return $local_ignore; +} + +sub main { + my $stow_path = '../stow'; + my $package; + my $context; + + # Test built-in list first. init_test_dirs() already set + # $ENV{HOME} to ensure that we're not using the user's global + # ignore list. + $package = 'non-existent-package'; + $context = "when using built-in list"; + test_local_ignore_list_always_ignored_at_top_level($stow_path, $package, $context); + test_built_in_list($stow_path, $package, $context, 1); + + # Test ~/.stow-global-ignore + setup_user_global_list(); + $context = "when using ~/$Stow::GLOBAL_IGNORE_FILE"; + test_local_ignore_list_always_ignored_at_top_level($stow_path, $package, $context); + test_built_in_list($stow_path, $package, $context, 0); + test_user_global_list($stow_path, $package, $context, 1); + + # Test empty package-local .stow-local-ignore + $package = 'ignorepkg'; + my $local_ignore = setup_package_local_list($stow_path, $package, ""); + $context = "when using empty $local_ignore"; + test_local_ignore_list_always_ignored_at_top_level($stow_path, $package, $context); + test_built_in_list($stow_path, $package, $context, 0); + test_user_global_list($stow_path, $package, $context, 0); + test_ignores( + $stow_path, $package, $context, + 'random' => 0, + 'foo2/bar' => 0, + 'foo2/bars' => 0, + 'foo2/bar/random' => 0, + 'foo2/bazqux' => 0, + 'xfoo2/bazqux' => 0, + ); + + # Test package-local .stow-local-ignore with only path segment regexps + $local_ignore = setup_package_local_list($stow_path, $package, < 1, + 'foo2/bar' => 0, + 'foo2/bars' => 0, + 'foo2/bar/random' => 1, + 'foo2/bazqux' => 0, + 'xfoo2/bazqux' => 0, + ); + + # Test package-local .stow-local-ignore with only full path regexps + $local_ignore = setup_package_local_list($stow_path, $package, < 0, + 'foo2/bar' => 1, + 'foo2/bars' => 0, + 'foo2/bar/random' => 1, + 'foo2/bazqux' => 0, + 'xfoo2/bazqux' => 0, + ); + + # Test package-local .stow-local-ignore with a mixture of regexps + $local_ignore = setup_package_local_list($stow_path, $package, < 1, + 'foo2/bar' => 1, + 'foo2/bars' => 0, + 'foo2/bar/random' => 1, + 'foo2/bazqux' => 1, + 'xfoo2/bazqux' => 0, + ); + + test_examples_in_manual($stow_path); + test_invalid_regexp($stow_path, "Invalid segment regexp in list", < 1, + ); + } + + for my $re ('bar', 'baz', 'qux', 'o/bar/b') { + my $local_ignore = setup_package_local_list($stow_path, $package, "$re\n"); + test_ignores( + $stow_path, $package, $context, + "foo/bar/bazqux" => 0, + ); + } +} + +sub test_invalid_regexp { + my ($stow_path, $context, $list) = @_; + my $package = 'ignorepkg'; + + my $local_ignore = setup_package_local_list($stow_path, $package, $list); + eval { + test_ignores( + $stow_path, $package, $context, + "foo/bar/bazqux" => 1, + ); + }; + like($@, qr/^Failed to compile regexp: Quantifier follows nothing in regex;/, + $context); +} + +sub test_ignore_via_stow { + my ($stow_path) = @_; + + my $package = 'pkg1'; + make_path("$stow_path/$package/foo/bar"); + make_file("$stow_path/$package/foo/bar/baz"); + + setup_package_local_list($stow_path, $package, 'foo'); + $stow->plan_stow($package); + is($stow->get_tasks(), 0, 'top dir ignored'); + is($stow->get_conflicts(), 0, 'top dir ignored, no conflicts'); + + make_path("foo"); + for my $ignore ('bar', 'foo/bar', '/foo/bar', '^/foo/bar', '^/fo.+ar') { + setup_package_local_list($stow_path, $package, $ignore); + $stow->plan_stow($package); + is($stow->get_tasks(), 0, "bar ignored via $ignore"); + is($stow->get_conflicts(), 0, 'bar ignored, no conflicts'); + } + + make_file("$stow_path/$package/foo/qux"); + $stow->plan_stow($package); + $stow->process_tasks(); + is($stow->get_conflicts(), 0, 'no conflicts stowing qux'); + ok(! -e "foo/bar", "bar ignore prevented stow"); + ok(-l "foo/qux", "qux not ignored and stowed"); + is(readlink("foo/qux"), "../$stow_path/$package/foo/qux", "qux stowed correctly"); +} + +main(); diff --git a/t/join_paths.t b/t/join_paths.t old mode 100644 new mode 100755 index 1fc6b24..40c5a8f --- a/t/join_paths.t +++ b/t/join_paths.t @@ -1,89 +1,61 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing join_paths(); # -# load as a library -BEGIN { use lib qw(. ..); require "stow"; } +use strict; +use warnings; -use Test::More tests => 13; +use Stow::Util qw(join_paths set_debug_level); -is( - join_paths('a/b/c', 'd/e/f'), - 'a/b/c/d/e/f', - => 'simple' +#set_debug_level(4); + +use Test::More tests => 22; + +my @TESTS = ( + [['a/b/c', 'd/e/f'], 'a/b/c/d/e/f' => 'simple'], + [['a/b/c', '/d/e/f'], '/d/e/f' => 'relative then absolute'], + [['/a/b/c', 'd/e/f'], '/a/b/c/d/e/f' => 'absolute then relative'], + [['/a/b/c', '/d/e/f'], '/d/e/f' => 'two absolutes'], + [['/a/b/c/', '/d/e/f/'], '/d/e/f' => 'two absolutes with trailing /'], + [['///a/b///c//', '/d///////e/f'], '/d/e/f' => "multiple /'s, absolute"], + [['///a/b///c//', 'd///////e/f'], '/a/b/c/d/e/f' => "multiple /'s, relative"], + [['', 'a/b/c'], 'a/b/c' => 'first empty'], + [['a/b/c', ''], 'a/b/c' => 'second empty'], + [['/', 'a/b/c'], '/a/b/c' => 'first is /'], + [['a/b/c', '/'], '/' => 'second is /'], + [['../a1/b1/../c1/', 'a2/../b2/e2'], '../a1/c1/b2/e2' => 'relative with ../'], + [['../a1/b1/../c1/', '/a2/../b2/e2'], '/b2/e2' => 'absolute with ../'], + [['../a1/../../c1', 'a2/../../'], '../..' => 'lots of ../'], + [['./', '../a2'], '../a2' => 'drop any "./"'], + [['./a1', '../../a2'], '../a2' => 'drop any "./foo"'], + [['a/b/c', '.'], 'a/b/c' => '. on RHS'], + [['a/b/c', '.', 'd/e'], 'a/b/c/d/e' => '. in middle'], + [['0', 'a/b'], '0/a/b' => '0 at start'], + [['/0', 'a/b'], '/0/a/b' => '/0 at start'], + [['a/b/c', '0', 'd/e'], 'a/b/c/0/d/e' => '0 in middle'], + [['a/b', '0'], 'a/b/0' => '0 at end'], ); -is( - join_paths('/a/b/c', '/d/e/f'), - '/a/b/c/d/e/f', - => 'leading /' -); - -is( - join_paths('/a/b/c/', '/d/e/f/'), - '/a/b/c/d/e/f', - => 'trailing /' -); - -is( - join_paths('///a/b///c//', '/d///////e/f'), - '/a/b/c/d/e/f', - => 'mltiple /\'s' -); - -is( - join_paths('', 'a/b/c'), - 'a/b/c', - => 'first empty' -); - -is( - join_paths('a/b/c', ''), - 'a/b/c', - => 'second empty' -); - -is( - join_paths('/', 'a/b/c'), - '/a/b/c', - => 'first is /' -); - -is( - join_paths('a/b/c', '/'), - 'a/b/c', - => 'second is /' -); - -is( - join_paths('///a/b///c//', '/d///////e/f'), - '/a/b/c/d/e/f', - => 'multiple /\'s' -); - - -is( - join_paths('../a1/b1/../c1/', '/a2/../b2/e2'), - '../a1/c1/b2/e2', - => 'simple deref ".."' -); - -is( - join_paths('../a1/b1/../c1/d1/e1', '../a2/../b2/c2/d2/../e2'), - '../a1/c1/d1/b2/c2/e2', - => 'complex deref ".."' -); - -is( - join_paths('../a1/../../c1', 'a2/../../'), - '../..', - => 'too many ".."' -); - -is( - join_paths('./a1', '../../a2'), - '../a2', - => 'drop any "./"' -); +for my $test (@TESTS) { + my ($inputs, $expected, $scenario) = @$test; + my $got = join_paths(@$inputs); + my $descr = "$scenario: in=[" . join(', ', map "'$_'", @$inputs) . "] exp=[$expected] got=[$got]"; + is($got, $expected, $descr); +} diff --git a/t/link_dest_within_stow_dir.t b/t/link_dest_within_stow_dir.t new file mode 100755 index 0000000..01ec2f4 --- /dev/null +++ b/t/link_dest_within_stow_dir.t @@ -0,0 +1,88 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Testing Stow::link_dest_within_stow_dir() +# + +use strict; +use warnings; + +use Test::More tests => 6; + +use testutil; +use Stow::Util; + +init_test_dirs(); + +# This is a relative path, unlike $ABS_TEST_DIR below. +my $stow = new_Stow(dir => "$TEST_DIR/stow", + target => "$TEST_DIR/target"); + +subtest("relative stow dir, link to top-level package file" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("../stow/pkg/dir/file"); + is($package, "pkg", "package"); + is($path, "dir/file", "path"); +}); + +subtest("relative stow dir, link to second-level package file" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("../stow/pkg/dir/subdir/file"); + is($package, "pkg", "package"); + is($path, "dir/subdir/file", "path"); +}); + +# This is an absolute path, unlike $TEST_DIR above. +$stow = new_Stow(dir => "$ABS_TEST_DIR/stow", + target => "$ABS_TEST_DIR/target"); + +subtest("relative stow dir, link to second-level package file" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("../stow/pkg/dir/file"); + is($package, "pkg", "package"); + is($path, "dir/file", "path"); +}); + +subtest("absolute stow dir, link to top-level package file" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("../stow/pkg/dir/subdir/file"); + is($package, "pkg", "package"); + is($path, "dir/subdir/file", "path"); +}); + +# Links with destination in the target are not pointing within +# the stow dir, so they're not owned by stow. +subtest("link to path in target" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("./alien"); + is($path, "", "alien is in target, so path is empty"); + is($package, "", "alien is in target, so package is empty"); +}); + +subtest("link to path outside target and stow dir" => sub { + plan tests => 2; + my ($package, $path) = + $stow->link_dest_within_stow_dir("../alien"); + is($path, "", "alien is outside, so path is empty"); + is($package, "", "alien is outside, so package is empty"); +}); diff --git a/t/parent.t b/t/parent.t old mode 100644 new mode 100755 index 52a4bea..1fae871 --- a/t/parent.t +++ b/t/parent.t @@ -1,35 +1,52 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # # Testing parent() # -# load as a library -BEGIN { use lib qw(. ..); require "stow"; } +use strict; +use warnings; + +use Stow::Util qw(parent); use Test::More tests => 5; is( parent('a/b/c'), - 'a/b', + 'a/b' => 'no leading or trailing /' ); is( parent('/a/b/c'), - '/a/b', + '/a/b' => 'leading /' ); is( parent('a/b/c/'), - 'a/b', + 'a/b' => 'trailing /' ); is( parent('/////a///b///c///'), - '/a/b', + '/a/b' => 'multiple /' ); diff --git a/t/rc_options.t b/t/rc_options.t new file mode 100755 index 0000000..cbbbee2 --- /dev/null +++ b/t/rc_options.t @@ -0,0 +1,266 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Test processing of stowrc file. +# + +use strict; +use warnings; + +use Test::More tests => 34; + +use testutil; + +require 'stow'; + +# .stowrc files used for testing, relative to run_from/ +my $CWD_RC_FILE = ".stowrc"; +my $HOME_RC_FILE = "../.stowrc"; +# Take the safe route and cowardly refuse to continue if there's +# already a file at $HOME_RC_FILE. +if (-e $HOME_RC_FILE) { + die "RC file location $HOME_RC_FILE already exists!\n"; +} + +my ($options, $pkgs_to_delete, $pkgs_to_stow); + +# Init testing directory structure and overwrite ENV{HOME} to prevent +# squashing existing .stowrc file. +init_test_dirs(); + +# =========== RC Loading Tests =========== +# Basic parsing and loading rc file tests. +# ======================================== + +my $orig_HOME = $ENV{HOME}; + +# +# Test no .stowrc file anywhere +# +delete $ENV{HOME}; +local @ARGV = ('dummy'); +cd("$TEST_DIR/run_from"); +($options, $pkgs_to_delete, $pkgs_to_stow) = process_options(); +is($options->{target}, "$ABS_TEST_DIR", "default --target with no .stowrc"); +is($options->{dir}, "$ABS_TEST_DIR/run_from", "default -d with no .stowrc"); + +# +# Test .stowrc file in cwd with relative paths, and $HOME not defined +# +make_file($CWD_RC_FILE, <{target}, "../target" + => "relative --target from \$PWD/.stowrc"); +is($options->{dir}, "../stow" + => "relative -d from \$PWD/.stowrc"); + +$ENV{HOME} = $orig_HOME; +remove_file($CWD_RC_FILE); + +# +# Test .stowrc file in cwd with absolute paths, and $HOME not defined +# +make_file($CWD_RC_FILE, <{target}, "$ABS_TEST_DIR/target" + => "absolute --target from \$PWD/.stowrc"); +is($options->{dir}, "$ABS_TEST_DIR/stow" + => "abs_test_dir -d from \$PWD/.stowrc"); + +$ENV{HOME} = $orig_HOME; +remove_file($CWD_RC_FILE); + +# +# Test ~/.stowrc file with one relative option per line. +# +local @ARGV = ('dummy'); +make_file($HOME_RC_FILE, <{target}, "../target", "--target from \$HOME/.stowrc"); +is($options->{dir}, "../stow", "-d from \$HOME/.stowrc"); + +# +# Test ~/.stowrc file with one absolute option per line. +# +local @ARGV = ('dummy'); +make_file($HOME_RC_FILE, <{target}, "$ABS_TEST_DIR/target" + => "--target from \$HOME/.stowrc"); +is($options->{dir}, "$ABS_TEST_DIR/stow" + => "-d from \$HOME/.stowrc"); + +# +# Test that some but not all options ~/.stowrc file are overridden by +# .stowrc in cwd. +# +local @ARGV = ('dummy'); +make_file($HOME_RC_FILE, <{target}, "$ABS_TEST_DIR/target" + => "--target overridden by \$PWD/.stowrc"); +is($options->{dir}, "$ABS_TEST_DIR/stow" + => "-d overridden \$PWD/.stowrc"); +is_deeply($options->{defer}, [qr(\Ainfo), qr(\Aman)], + 'defer man and info'); +unlink($CWD_RC_FILE) or die "Failed to unlink $CWD_RC_FILE"; + +# +# Test that scalar cli option overwrites conflicting ~/.stowrc option. +# +local @ARGV = ('-d', "$ABS_TEST_DIR/stow", 'dummy'); +make_file($HOME_RC_FILE, <{dir}, "$ABS_TEST_DIR/stow", "cli overwrite scalar rc option."); + +# +# Test that list cli option merges with conflicting .stowrc option. +# Documentation states that .stowrc options are prepended to cli options. +# +local @ARGV = ( + '--defer=man', + 'dummy' +); +make_file($HOME_RC_FILE, <{defer}, [qr(\Ainfo), qr(\Aman)], + 'defer man and info'); + +# ======== Filepath Expansion Tests ======== +# Test proper filepath expansion in rc file. +# Expansion is only applied to options that +# take a filepath, namely target and dir. +# ========================================== + + +# +# Test environment variable expansion function. +# +# Basic expansion +is(expand_environment('$HOME/stow'), "$ABS_TEST_DIR/stow", 'expand $HOME'); +is(expand_environment('${HOME}/stow'), "$ABS_TEST_DIR/stow", 'expand ${HOME}'); + +delete $ENV{UNDEFINED}; # just in case +foreach my $var ('$UNDEFINED', '${UNDEFINED}') { + eval { + expand_environment($var, "--foo option"); + }; + is( + $@, + "--foo option references undefined environment variable \$UNDEFINED; " . + "aborting!\n", + "expand $var" + ); +} + +# Expansion with an underscore. +$ENV{'WITH_UNDERSCORE'} = 'test string'; +is(expand_environment('${WITH_UNDERSCORE}'), 'test string', + 'expand ${WITH_UNDERSCORE}'); +delete $ENV{'WITH_UNDERSCORE'}; +# Expansion with escaped $ +is(expand_environment('\$HOME/stow'), '$HOME/stow', 'expand \$HOME'); + +# +# Test tilde (~) expansion +# +# Basic expansion +is(expand_tilde('~/path'), "$ENV{HOME}/path", 'tilde expansion to $HOME'); +# Should not expand if middle of path +is(expand_tilde('/path/~/here'), '/path/~/here', 'middle ~ not expanded'); +# Test escaped ~ +is(expand_tilde('\~/path'), '~/path', 'escaped tilde'); + +# +# Test that environment variable expansion is applied. +# +make_file($HOME_RC_FILE, <<'HERE'); +--dir=$HOME/stow +--target=$HOME/stow +--ignore=\$HOME +--defer=\$HOME +--override=\$HOME +HERE +($options, $pkgs_to_delete, $pkgs_to_stow) = get_config_file_options(); +is($options->{dir}, "$ABS_TEST_DIR/stow", + "apply environment expansion on \$HOME/.stowrc --dir"); +is($options->{target}, "$ABS_TEST_DIR/stow", + "apply environment expansion on \$HOME/.stowrc --target"); +is_deeply($options->{ignore}, [qr(\$HOME\z)], + "environment expansion not applied on --ignore"); +is_deeply($options->{defer}, [qr(\A\$HOME)], + "environment expansion not applied on --defer"); +is_deeply($options->{override}, [qr(\A\$HOME)], + "environment expansion not applied on --override"); + +# +# Test that tilde expansion is applied in correct places. +# +make_file($HOME_RC_FILE, <<'HERE'); +--dir=~/stow +--target=~/stow +--ignore=~/stow +--defer=~/stow +--override=~/stow +HERE +($options, $pkgs_to_delete, $pkgs_to_stow) = get_config_file_options(); +is($options->{dir}, "$ABS_TEST_DIR/stow", + "apply tilde expansion on \$HOME/.stowrc --dir"); +is($options->{target}, "$ABS_TEST_DIR/stow", + "apply tilde expansion on \$HOME/.stowrc --target"); +is_deeply($options->{ignore}, [qr(~/stow\z)], + "tilde expansion not applied on --ignore"); +is_deeply($options->{defer}, [qr(\A~/stow)], + "tilde expansion not applied on --defer"); +is_deeply($options->{override}, [qr(\A~/stow)], + "tilde expansion not applied on --override"); + +# +# Clean up files used for testing. +# +unlink $HOME_RC_FILE or die "Unable to clean up $HOME_RC_FILE.\n"; +remove_dir($ABS_TEST_DIR); + diff --git a/t/relative_path.t b/t/relative_path.t deleted file mode 100644 index 7269b7d..0000000 --- a/t/relative_path.t +++ /dev/null @@ -1,41 +0,0 @@ -#!/usr/local/bin/perl - -# -# Testing relative_path(); -# - -# load as a library -BEGIN { use lib qw(. ..); require "stow"; } - -use Test::More tests => 5; - -is( - relative_path('a/b/c', 'a/b/d'), - '../d', - => 'diferent branches' -); - -is( - relative_path('/a/b/c', '/a/b/c/d'), - 'd', - => 'lower same branch' -); - -is( - relative_path('a/b/c', 'a/b'), - '..', - => 'higher, same branch' -); - -is( - relative_path('/a/b/c', '/d/e/f'), - '../../../d/e/f', - => 'common parent is /' -); - -is( - relative_path('///a//b//c////', '/a////b/c/d////'), - 'd', - => 'extra /\'s ' -); - diff --git a/t/stow.t b/t/stow.t old mode 100644 new mode 100755 index 4281270..d23e8d6 --- a/t/stow.t +++ b/t/stow.t @@ -1,97 +1,571 @@ -#!/usr/local/bin/perl +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. # -# Testing core application +# Test stowing packages. # -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } +use strict; +use warnings; -use Test::More tests => 10; +use Test::More tests => 22; +use Test::Output; +use English qw(-no_match_vars); -local @ARGV = ( - '-v', - '-d t/stow', - '-t t/target', - 'dummy' -); +use Stow::Util qw(canon_path set_debug_level); +use testutil; -### setup -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); +init_test_dirs(); +cd("$TEST_DIR/target"); -ok eval {process_options(); 1} => 'process options'; -ok eval {set_stow_path(); 1} => 'set stow path'; +my $stow; +my %conflicts; -is($Stow_Path,"../stow" => 'stow dir'); -is_deeply(\@Pkgs_To_Stow, [ 'dummy' ] => 'default to stow'); +# Note that each of the following tests use a distinct set of files +subtest('stow a simple tree minimally', sub { + plan tests => 2; + my $stow = new_Stow(dir => '../stow'); -# -# Check mixed up package options -# -%Option=(); -local @ARGV = ( - '-v', - '-D', 'd1', 'd2', - '-S', 's1', - '-R', 'r1', - '-D', 'd3', - '-S', 's2', 's3', - '-R', 'r2', -); + make_path('../stow/pkg1/bin1'); + make_file('../stow/pkg1/bin1/file1'); -@Pkgs_To_Stow = (); -@Pkgs_To_Delete = (); -process_options(); -is_deeply(\@Pkgs_To_Delete, [ 'd1', 'd2', 'r1', 'd3', 'r2' ] => 'mixed deletes'); -is_deeply(\@Pkgs_To_Stow, [ 's1', 'r1', 's2', 's3', 'r2' ] => 'mixed stows'); + $stow->plan_stow('pkg1'); + $stow->process_tasks(); + is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow'); + is( + readlink('bin1'), + '../stow/pkg1/bin1', + => 'minimal stow of a simple tree' + ); +}); -# -# Check setting defered paths -# -%Option=(); -local @ARGV = ( - '--defer=man', - '--defer=info' -); -process_options(); -is_deeply($Option{'defer'}, [ qr(\Aman), qr(\Ainfo) ] => 'defer man and info'); +subtest('stow a simple tree into an existing directory', sub { + plan tests => 1; + my $stow = new_Stow(); -# -# Check setting override paths -# -%Option=(); -local @ARGV = ( - '--override=man', - '--override=info' -); -process_options(); -is_deeply($Option{'override'}, [qr(\Aman), qr(\Ainfo)] => 'override man and info'); + make_path('../stow/pkg2/lib2'); + make_file('../stow/pkg2/lib2/file2'); + make_path('lib2'); -# -# Check stripping any matched quotes -# -%Option=(); -local @ARGV = ( - "--override='man'", - '--override="info"', -); -process_options(); -is_deeply($Option{'override'}, [qr(\Aman), qr(\Ainfo)] => 'strip shell quoting'); + $stow->plan_stow('pkg2'); + $stow->process_tasks(); + is( + readlink('lib2/file2'), + '../../stow/pkg2/lib2/file2', + => 'stow simple tree to existing directory' + ); +}); -# -# Check setting ignored paths -# -%Option=(); -local @ARGV = ( - '--ignore="~"', - '--ignore="\.#.*' -); -process_options(); -is_deeply($Option{'ignore'}, [ qr(~\z), qr(\.#.*\z) ] => 'ignore temp files'); +subtest('unfold existing tree', sub { + plan tests => 3; + my $stow = new_Stow(); + make_path('../stow/pkg3a/bin3'); + make_file('../stow/pkg3a/bin3/file3a'); + make_link('bin3' => '../stow/pkg3a/bin3'); # emulate stow -# vim:ft=perl + make_path('../stow/pkg3b/bin3'); + make_file('../stow/pkg3b/bin3/file3b'); + + $stow->plan_stow('pkg3b'); + $stow->process_tasks(); + ok(-d 'bin3'); + is(readlink('bin3/file3a'), '../../stow/pkg3a/bin3/file3a'); + is(readlink('bin3/file3b'), '../../stow/pkg3b/bin3/file3b' + => 'target already has 1 stowed package'); +}); + +subtest("Package dir 'bin4' conflicts with existing non-dir so can't unfold", sub { + plan tests => 2; + my $stow = new_Stow(); + + make_file('bin4'); # this is a file but named like a directory + make_path('../stow/pkg4/bin4'); + make_file('../stow/pkg4/bin4/file4'); + + $stow->plan_stow('pkg4'); + %conflicts = $stow->get_conflicts(); + is($stow->get_conflict_count, 1); + like( + $conflicts{stow}{pkg4}[0], + qr!cannot stow ../stow/pkg4/bin4 over existing target bin4 since neither a link nor a directory and --adopt not specified! + => 'link to new dir bin4 conflicts with existing non-directory' + ); +}); + +subtest("Package dir 'bin4a' conflicts with existing non-dir " . + "so can't unfold even with --adopt", sub { + plan tests => 2; + my $stow = new_Stow(adopt => 1); + + make_file('bin4a'); # this is a file but named like a directory + make_path('../stow/pkg4a/bin4a'); + make_file('../stow/pkg4a/bin4a/file4a'); + + $stow->plan_stow('pkg4a'); + %conflicts = $stow->get_conflicts(); + is($stow->get_conflict_count, 1); + like( + $conflicts{stow}{pkg4a}[0], + qr!cannot stow directory ../stow/pkg4a/bin4a over existing non-directory target bin4a! + => 'link to new dir bin4a conflicts with existing non-directory' + ); +}); + +subtest("Package files 'file4b' and 'bin4b' conflict with existing files", sub { + plan tests => 3; + my $stow = new_Stow(); + + # Populate target + make_file('file4b', 'file4b - version originally in target'); + make_path('bin4b'); + make_file('bin4b/file4b', 'bin4b/file4b - version originally in target'); + + # Populate stow package + make_path('../stow/pkg4b'); + make_file('../stow/pkg4b/file4b', 'file4b - version originally in stow package'); + make_path('../stow/pkg4b/bin4b'); + make_file('../stow/pkg4b/bin4b/file4b', 'bin4b/file4b - version originally in stow package'); + + $stow->plan_stow('pkg4b'); + %conflicts = $stow->get_conflicts(); + is($stow->get_conflict_count, 2 => 'conflict per file'); + for my $i (0, 1) { + my $target = $i ? 'file4b' : 'bin4b/file4b'; + like( + $conflicts{stow}{pkg4b}[$i], + qr,cannot stow ../stow/pkg4b/$target over existing target $target since neither a link nor a directory and --adopt not specified, + => 'link to file4b conflicts with existing non-directory' + ); + } +}); + +subtest("Package files 'file4d' conflicts with existing directories", sub { + plan tests => 3; + my $stow = new_Stow(); + + # Populate target + make_path('file4d'); # this is a directory but named like a file to create the conflict + make_path('bin4d/file4d'); # same here + + # Populate stow package + make_path('../stow/pkg4d'); + make_file('../stow/pkg4d/file4d', 'file4d - version originally in stow package'); + make_path('../stow/pkg4d/bin4d'); + make_file('../stow/pkg4d/bin4d/file4d', 'bin4d/file4d - version originally in stow package'); + + $stow->plan_stow('pkg4d'); + %conflicts = $stow->get_conflicts(); + is($stow->get_conflict_count, 2 => 'conflict per file'); + for my $i (0, 1) { + my $target = $i ? 'file4d' : 'bin4d/file4d'; + like( + $conflicts{stow}{pkg4d}[$i], + qr!cannot stow non-directory ../stow/pkg4d/$target over existing directory target $target! + => 'link to file4d conflicts with existing non-directory' + ); + } +}); + +subtest("Package files 'file4c' and 'bin4c' can adopt existing versions", sub { + plan tests => 8; + my $stow = new_Stow(adopt => 1); + + # Populate target + make_file('file4c', "file4c - version originally in target\n"); + make_path ('bin4c'); + make_file('bin4c/file4c', "bin4c/file4c - version originally in target\n"); + + # Populate stow package + make_path('../stow/pkg4c'); + make_file('../stow/pkg4c/file4c', "file4c - version originally in stow package\n"); + make_path ('../stow/pkg4c/bin4c'); + make_file('../stow/pkg4c/bin4c/file4c', "bin4c/file4c - version originally in stow package\n"); + + $stow->plan_stow('pkg4c'); + is($stow->get_conflict_count, 0 => 'no conflicts with --adopt'); + is($stow->get_tasks, 4 => 'two tasks per file'); + $stow->process_tasks(); + for my $file ('file4c', 'bin4c/file4c') { + ok(-l $file, "$file turned into a symlink"); + is( + readlink $file, + (index($file, '/') == -1 ? '' : '../' ) + . "../stow/pkg4c/$file" => "$file points to right place" + ); + is(cat_file($file), "$file - version originally in target\n" => "$file has right contents"); + } + +}); + +subtest("Target already exists but is not owned by stow", sub { + plan tests => 1; + my $stow = new_Stow(); + + make_path('bin5'); + make_invalid_link('bin5/file5','../../empty'); + make_path('../stow/pkg5/bin5/file5'); + + $stow->plan_stow('pkg5'); + %conflicts = $stow->get_conflicts(); + like( + $conflicts{stow}{pkg5}[-1], + qr/not owned by stow/ + => 'target already exists but is not owned by stow' + ); +}); + +subtest("Replace existing but invalid target", sub { + plan tests => 1; + my $stow = new_Stow(); + + make_invalid_link('file6','../stow/path-does-not-exist'); + make_path('../stow/pkg6'); + make_file('../stow/pkg6/file6'); + + $stow->plan_stow('pkg6'); + $stow->process_tasks(); + is( + readlink('file6'), + '../stow/pkg6/file6' + => 'replace existing but invalid target' + ); +}); + +subtest("Target already exists, is owned by stow, but points to a non-directory", sub { + plan tests => 1; + my $stow = new_Stow(); + #set_debug_level(4); + + make_path('bin7'); + make_path('../stow/pkg7a/bin7'); + make_file('../stow/pkg7a/bin7/node7'); + make_link('bin7/node7','../../stow/pkg7a/bin7/node7'); + make_path('../stow/pkg7b/bin7/node7'); + make_file('../stow/pkg7b/bin7/node7/file7'); + + $stow->plan_stow('pkg7b'); + %conflicts = $stow->get_conflicts(); + like( + $conflicts{stow}{pkg7b}[-1], + qr/existing target is stowed to a different package/ + => 'link to new dir conflicts with existing stowed non-directory' + ); +}); + +subtest("stowing directories named 0", sub { + plan tests => 4; + my $stow = new_Stow(); + + make_path('../stow/pkg8a/0'); + make_file('../stow/pkg8a/0/file8a'); + make_link('0' => '../stow/pkg8a/0'); # emulate stow + + make_path('../stow/pkg8b/0'); + make_file('../stow/pkg8b/0/file8b'); + + $stow->plan_stow('pkg8b'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + ok(-d '0'); + is(readlink('0/file8a'), '../../stow/pkg8a/0/file8a'); + is(readlink('0/file8b'), '../../stow/pkg8b/0/file8b' + => 'stowing directories named 0' + ); +}); + +subtest("overriding already stowed documentation", sub { + plan tests => 2; + my $stow = new_Stow(override => ['man9', 'info9']); + + make_path('../stow/pkg9a/man9/man1'); + make_file('../stow/pkg9a/man9/man1/file9.1'); + make_path('man9/man1'); + make_link('man9/man1/file9.1' => '../../../stow/pkg9a/man9/man1/file9.1'); # emulate stow + + make_path('../stow/pkg9b/man9/man1'); + make_file('../stow/pkg9b/man9/man1/file9.1'); + + $stow->plan_stow('pkg9b'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + is(readlink('man9/man1/file9.1'), '../../../stow/pkg9b/man9/man1/file9.1' + => 'overriding existing documentation files' + ); +}); + +subtest("deferring to already stowed documentation", sub { + plan tests => 3; + my $stow = new_Stow(defer => ['man10', 'info10']); + + make_path('../stow/pkg10a/man10/man1'); + make_file('../stow/pkg10a/man10/man1/file10.1'); + make_path('man10/man1'); + make_link('man10/man1/file10.1' => '../../../stow/pkg10a/man10/man1/file10.1'); # emulate stow + + make_path('../stow/pkg10b/man10/man1'); + make_file('../stow/pkg10b/man10/man1/file10.1'); + + $stow->plan_stow('pkg10b'); + is($stow->get_tasks, 0, 'no tasks to process'); + is($stow->get_conflict_count, 0); + is(readlink('man10/man1/file10.1'), '../../../stow/pkg10a/man10/man1/file10.1' + => 'defer to existing documentation files' + ); +}); + +subtest("Ignore temp files", sub { + plan tests => 4; + my $stow = new_Stow(ignore => ['~', '\.#.*']); + + make_path('../stow/pkg11/man11/man1'); + make_file('../stow/pkg11/man11/man1/file11.1'); + make_file('../stow/pkg11/man11/man1/file11.1~'); + make_file('../stow/pkg11/man11/man1/.#file11.1'); + make_path('man11/man1'); + + $stow->plan_stow('pkg11'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + is(readlink('man11/man1/file11.1'), '../../../stow/pkg11/man11/man1/file11.1'); + ok(!-e 'man11/man1/file11.1~'); + ok(!-e 'man11/man1/.#file11.1' + => 'ignore temp files' + ); +}); + +subtest("stowing links library files", sub { + plan tests => 3; + my $stow = new_Stow(); + + make_path('../stow/pkg12/lib12/'); + make_file('../stow/pkg12/lib12/lib.so.1'); + make_link('../stow/pkg12/lib12/lib.so', 'lib.so.1'); + + make_path('lib12/'); + + $stow->plan_stow('pkg12'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + is(readlink('lib12/lib.so.1'), '../../stow/pkg12/lib12/lib.so.1'); + is(readlink('lib12/lib.so'), '../../stow/pkg12/lib12/lib.so' + => 'stow links to libraries' + ); +}); + +subtest("unfolding to stow links to library files", sub { + plan tests => 5; + my $stow = new_Stow(); + + make_path('../stow/pkg13a/lib13/'); + make_file('../stow/pkg13a/lib13/liba.so.1'); + make_link('../stow/pkg13a/lib13/liba.so', 'liba.so.1'); + make_link('lib13','../stow/pkg13a/lib13'); + + make_path('../stow/pkg13b/lib13/'); + make_file('../stow/pkg13b/lib13/libb.so.1'); + make_link('../stow/pkg13b/lib13/libb.so', 'libb.so.1'); + + $stow->plan_stow('pkg13b'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0); + is(readlink('lib13/liba.so.1'), '../../stow/pkg13a/lib13/liba.so.1'); + is(readlink('lib13/liba.so' ), '../../stow/pkg13a/lib13/liba.so'); + is(readlink('lib13/libb.so.1'), '../../stow/pkg13b/lib13/libb.so.1'); + is(readlink('lib13/libb.so' ), '../../stow/pkg13b/lib13/libb.so' + => 'unfolding to stow links to libraries' + ); +}); + +subtest("stowing to stow dir should fail", sub { + plan tests => 4; + make_path('stow'); + $stow = new_Stow(dir => 'stow'); + + make_path('stow/pkg14/stow/pkg15'); + make_file('stow/pkg14/stow/pkg15/node15'); + + stderr_like( + sub { $stow->plan_stow('pkg14'); }, + qr/WARNING: skipping target which was current stow directory stow/, + "stowing to stow dir should give warning" + ); + + is($stow->get_tasks, 0, 'no tasks to process'); + is($stow->get_conflict_count, 0); + ok( + ! -l 'stow/pkg15' + => "stowing to stow dir should fail" + ); +}); + +subtest("stow a simple tree minimally when cwd isn't target", sub { + plan tests => 2; + cd('../..'); + $stow = new_Stow(dir => "$TEST_DIR/stow", target => "$TEST_DIR/target"); + + make_path("$TEST_DIR/stow/pkg16/bin16"); + make_file("$TEST_DIR/stow/pkg16/bin16/file16"); + + $stow->plan_stow('pkg16'); + $stow->process_tasks(); + is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow'); + is( + readlink("$TEST_DIR/target/bin16"), + '../stow/pkg16/bin16', + => "minimal stow of a simple tree when cwd isn't target" + ); +}); + +subtest("stow a simple tree minimally to absolute stow dir when cwd isn't", sub { + plan tests => 2; + my $stow = new_Stow(dir => canon_path("$TEST_DIR/stow"), + target => "$TEST_DIR/target"); + + make_path("$TEST_DIR/stow/pkg17/bin17"); + make_file("$TEST_DIR/stow/pkg17/bin17/file17"); + + $stow->plan_stow('pkg17'); + $stow->process_tasks(); + is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow'); + is( + readlink("$TEST_DIR/target/bin17"), + '../stow/pkg17/bin17', + => "minimal stow of a simple tree with absolute stow dir" + ); +}); + +subtest("stow a simple tree minimally with absolute stow AND target dirs when", sub { + plan tests => 2; + my $stow = new_Stow(dir => canon_path("$TEST_DIR/stow"), + target => canon_path("$TEST_DIR/target")); + + make_path("$TEST_DIR/stow/pkg18/bin18"); + make_file("$TEST_DIR/stow/pkg18/bin18/file18"); + + $stow->plan_stow('pkg18'); + $stow->process_tasks(); + is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow'); + is( + readlink("$TEST_DIR/target/bin18"), + '../stow/pkg18/bin18', + => "minimal stow of a simple tree with absolute stow and target dirs" + ); +}); + +subtest("stow a tree with no-folding enabled", sub { + plan tests => 82; + # folded directories should be split open (unfolded) where + # (and only where) necessary + # + cd("$TEST_DIR/target"); + + sub create_pkg { + my ($id, $pkg) = @_; + + my $stow_pkg = "../stow/$id-$pkg"; + make_path ($stow_pkg); + make_file("$stow_pkg/$id-file-$pkg"); + + # create a shallow hierarchy specific to this package which isn't + # yet stowed + make_path ("$stow_pkg/$id-$pkg-only-new"); + make_file("$stow_pkg/$id-$pkg-only-new/$id-file-$pkg"); + + # create a deeper hierarchy specific to this package which isn't + # yet stowed + make_path ("$stow_pkg/$id-$pkg-only-new2/subdir"); + make_file("$stow_pkg/$id-$pkg-only-new2/subdir/$id-file-$pkg"); + make_link("$stow_pkg/$id-$pkg-only-new2/current", "subdir"); + + # create a hierarchy specific to this package which is already + # stowed via a folded tree + make_path ("$stow_pkg/$id-$pkg-only-old"); + make_link("$id-$pkg-only-old", "$stow_pkg/$id-$pkg-only-old"); + make_file("$stow_pkg/$id-$pkg-only-old/$id-file-$pkg"); + + # create a shared hierarchy which this package uses + make_path ("$stow_pkg/$id-shared"); + make_file("$stow_pkg/$id-shared/$id-file-$pkg"); + + # create a partially shared hierarchy which this package uses + make_path ("$stow_pkg/$id-shared2/subdir-$pkg"); + make_file("$stow_pkg/$id-shared2/$id-file-$pkg"); + make_file("$stow_pkg/$id-shared2/subdir-$pkg/$id-file-$pkg"); + } + + foreach my $pkg (qw{a b}) { + create_pkg('no-folding', $pkg); + } + + $stow = new_Stow('no-folding' => 1); + $stow->plan_stow('no-folding-a'); + is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding'); + my @tasks = $stow->get_tasks; + use Data::Dumper; + is(scalar(@tasks), 13 => "6 dirs, 7 links") || warn Dumper(\@tasks); + $stow->process_tasks(); + + sub check_no_folding { + my ($pkg) = @_; + my $stow_pkg = "../stow/no-folding-$pkg"; + is_link("no-folding-file-$pkg", "$stow_pkg/no-folding-file-$pkg"); + + # check existing folded tree is untouched + is_link("no-folding-$pkg-only-old", "$stow_pkg/no-folding-$pkg-only-old"); + + # check newly stowed shallow tree is not folded + is_dir_not_symlink("no-folding-$pkg-only-new"); + is_link("no-folding-$pkg-only-new/no-folding-file-$pkg", + "../$stow_pkg/no-folding-$pkg-only-new/no-folding-file-$pkg"); + + # check newly stowed deeper tree is not folded + is_dir_not_symlink("no-folding-$pkg-only-new2"); + is_dir_not_symlink("no-folding-$pkg-only-new2/subdir"); + is_link("no-folding-$pkg-only-new2/subdir/no-folding-file-$pkg", + "../../$stow_pkg/no-folding-$pkg-only-new2/subdir/no-folding-file-$pkg"); + is_link("no-folding-$pkg-only-new2/current", + "../$stow_pkg/no-folding-$pkg-only-new2/current"); + + # check shared tree is not folded. first time round this will be + # newly stowed. + is_dir_not_symlink('no-folding-shared'); + is_link("no-folding-shared/no-folding-file-$pkg", + "../$stow_pkg/no-folding-shared/no-folding-file-$pkg"); + + # check partially shared tree is not folded. first time round this + # will be newly stowed. + is_dir_not_symlink('no-folding-shared2'); + is_link("no-folding-shared2/no-folding-file-$pkg", + "../$stow_pkg/no-folding-shared2/no-folding-file-$pkg"); + is_link("no-folding-shared2/no-folding-file-$pkg", + "../$stow_pkg/no-folding-shared2/no-folding-file-$pkg"); + } + + check_no_folding('a'); + + $stow = new_Stow('no-folding' => 1); + $stow->plan_stow('no-folding-b'); + is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding'); + @tasks = $stow->get_tasks; + is(scalar(@tasks), 11 => '4 dirs, 7 links') || warn Dumper(\@tasks); + $stow->process_tasks(); + + check_no_folding('a'); + check_no_folding('b'); +}); diff --git a/t/stow_contents.t b/t/stow_contents.t deleted file mode 100644 index 093a1df..0000000 --- a/t/stow_contents.t +++ /dev/null @@ -1,283 +0,0 @@ -#!/usr/local/bin/perl - -# -# Testing -# - -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } - -use Test::More tests => 13; -use English qw(-no_match_vars); - -# local utility -sub reset_state { - @Tasks = (); - @Conflicts = (); - %Link_Task_For = (); - %Dir_Task_For = (); - %Options = (); - return; -} - -### setup -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); - -chdir 't/target'; -$Stow_Path= '../stow'; - -# Note that each of the following tests use a distinct set of files - -# -# stow a simple tree minimally -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg1/bin1'); -make_file('../stow/pkg1/bin1/file1'); -stow_contents('../stow/pkg1', './', '../stow/pkg1'); -process_tasks(); -is( - readlink('bin1'), - '../stow/pkg1/bin1', - => 'minimal stow of a simple tree' -); - -# -# stow a simple tree into an existing directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg2/lib2'); -make_file('../stow/pkg2/lib2/file2'); -make_dir('lib2'); -stow_contents('../stow/pkg2', './', '../stow/pkg2'); -process_tasks(); -is( - readlink('lib2/file2'), - '../../stow/pkg2/lib2/file2', - => 'stow simple tree to existing directory' -); - -# -# unfold existing tree -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg3a/bin3'); -make_file('../stow/pkg3a/bin3/file3a'); -make_link('bin3' => '../stow/pkg3a/bin3'); # emulate stow - -make_dir('../stow/pkg3b/bin3'); -make_file('../stow/pkg3b/bin3/file3b'); -stow_contents('../stow/pkg3b', './', '../stow/pkg3b'); -process_tasks(); -ok( - -d 'bin3' && - readlink('bin3/file3a') eq '../../stow/pkg3a/bin3/file3a' && - readlink('bin3/file3b') eq '../../stow/pkg3b/bin3/file3b' - => 'target already has 1 stowed package' -); - -# -# Link to a new dir conflicts with existing non-dir (can't unfold) -# -reset_state(); -$Option{'verbose'} = 0; - -make_file('bin4'); # this is a file but named like a directory -make_dir('../stow/pkg4/bin4'); -make_file('../stow/pkg4/bin4/file4'); -stow_contents('../stow/pkg4', './', '../stow/pkg4'); -like( - $Conflicts[-1], qr(CONFLICT:.*existing target is neither a link nor a directory) - => 'link to new dir conflicts with existing non-directory' -); - -# -# Target already exists but is not owned by stow -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin5'); -make_link('bin5/file5','../../empty'); -make_dir('../stow/pkg5/bin5/file5'); -stow_contents('../stow/pkg5', './', '../stow/pkg5'); -like( - $Conflicts[-1], qr(CONFLICT:.*not owned by stow) - => 'target already exists but is not owned by stow' -); - -# -# Replace existing but invalid target -# -reset_state(); -$Option{'verbose'} = 0; - -make_link('file6','../stow/path-does-not-exist'); -make_dir('../stow/pkg6'); -make_file('../stow/pkg6/file6'); -eval{ stow_contents('../stow/pkg6', './', '../stow/pkg6'); process_tasks() }; -is( - readlink('file6'), - '../stow/pkg6/file6' - => 'replace existing but invalid target' -); - -# -# Target already exists, is owned by stow, but points to a non-directory -# (can't unfold) -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin7'); -make_dir('../stow/pkg7a/bin7'); -make_file('../stow/pkg7a/bin7/node7'); -make_link('bin7/node7','../../stow/pkg7a/bin7/node7'); -make_dir('../stow/pkg7b/bin7/node7'); -make_file('../stow/pkg7b/bin7/node7/file7'); -stow_contents('../stow/pkg7b', './', '../stow/pkg7b'); -like( - $Conflicts[-1], qr(CONFLICT:.*existing target is stowed to a different package) - => 'link to new dir conflicts with existing stowed non-directory' -); - -# -# stowing directories named 0 -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg8a/0'); -make_file('../stow/pkg8a/0/file8a'); -make_link('0' => '../stow/pkg8a/0'); # emulate stow - -make_dir('../stow/pkg8b/0'); -make_file('../stow/pkg8b/0/file8b'); -stow_contents('../stow/pkg8b', './', '../stow/pkg8b'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -d '0' && - readlink('0/file8a') eq '../../stow/pkg8a/0/file8a' && - readlink('0/file8b') eq '../../stow/pkg8b/0/file8b' - => 'stowing directories named 0' -); - -# -# overriding already stowed documentation -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'override'} = ['man9', 'info9']; - -make_dir('../stow/pkg9a/man9/man1'); -make_file('../stow/pkg9a/man9/man1/file9.1'); -make_dir('man9/man1'); -make_link('man9/man1/file9.1' => '../../../stow/pkg9a/man9/man1/file9.1'); # emulate stow - -make_dir('../stow/pkg9b/man9/man1'); -make_file('../stow/pkg9b/man9/man1/file9.1'); -stow_contents('../stow/pkg9b', './', '../stow/pkg9b'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('man9/man1/file9.1') eq '../../../stow/pkg9b/man9/man1/file9.1' - => 'overriding existing documentation files' -); - -# -# deferring to already stowed documentation -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'defer'} = ['man10', 'info10']; - -make_dir('../stow/pkg10a/man10/man1'); -make_file('../stow/pkg10a/man10/man1/file10.1'); -make_dir('man10/man1'); -make_link('man10/man1/file10.1' => '../../../stow/pkg10a/man10/man1/file10.1'); # emulate stow - -make_dir('../stow/pkg10b/man10/man1'); -make_file('../stow/pkg10b/man10/man1/file10.1'); -stow_contents('../stow/pkg10b', './', '../stow/pkg10b'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('man10/man1/file10.1') eq '../../../stow/pkg10a/man10/man1/file10.1' - => 'defer to existing documentation files' -); - -# -# Ignore temp files -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'ignore'} = ['~', '\.#.*']; - -make_dir('../stow/pkg11/man11/man1'); -make_file('../stow/pkg11/man11/man1/file11.1'); -make_file('../stow/pkg11/man11/man1/file11.1~'); -make_file('../stow/pkg11/man11/man1/.#file11.1'); -make_dir('man11/man1'); - -stow_contents('../stow/pkg11', './', '../stow/pkg11'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('man11/man1/file11.1') eq '../../../stow/pkg11/man11/man1/file11.1' && - !-e 'man11/man1/file11.1~' && - !-e 'man11/man1/.#file11.1' - => 'ignore temp files' -); - -# -# stowing links library files -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg12/lib12/'); -make_file('../stow/pkg12/lib12/lib.so'); -make_link('../stow/pkg12/lib12/lib.so.1','lib.so'); - -make_dir('lib12/'); -stow_contents('../stow/pkg12', './', '../stow/pkg12'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('lib12/lib.so.1') eq '../../stow/pkg12/lib12/lib.so.1' - => 'stow links to libraries' -); - -# -# unfolding to stow links to library files -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg13a/lib13/'); -make_file('../stow/pkg13a/lib13/liba.so'); -make_link('../stow/pkg13a/lib13/liba.so.1', 'liba.so'); -make_link('lib13','../stow/pkg13a/lib13'); - -make_dir('../stow/pkg13b/lib13/'); -make_file('../stow/pkg13b/lib13/libb.so'); -make_link('../stow/pkg13b/lib13/libb.so.1', 'libb.so'); - -stow_contents('../stow/pkg13b', './', '../stow/pkg13b'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('lib13/liba.so.1') eq '../../stow/pkg13a/lib13/liba.so.1' && - readlink('lib13/libb.so.1') eq '../../stow/pkg13b/lib13/libb.so.1' - => 'unfolding to stow links to libraries' -); diff --git a/t/testutil.pm b/t/testutil.pm new file mode 100755 index 0000000..2b4e097 --- /dev/null +++ b/t/testutil.pm @@ -0,0 +1,307 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Utilities shared by test scripts +# + +package testutil; + +use strict; +use warnings; + +use Carp qw(confess croak); +use File::Basename; +use File::Path qw(make_path remove_tree); +use File::Spec; +use Test::More; + +use Stow; +use Stow::Util qw(parent canon_path); + +use base qw(Exporter); +our @EXPORT = qw( + $ABS_TEST_DIR + $TEST_DIR + init_test_dirs + cd + new_Stow new_compat_Stow + make_path make_link make_invalid_link make_file + remove_dir remove_file remove_link + cat_file + is_link is_dir_not_symlink is_nonexistent_path +); + +our $TEST_DIR = 'tmp-testing-trees'; +our $ABS_TEST_DIR = File::Spec->rel2abs('tmp-testing-trees'); + +sub init_test_dirs { + my $test_dir = shift || $TEST_DIR; + my $abs_test_dir = File::Spec->rel2abs($test_dir); + + # Create a run_from/ subdirectory for tests which want to run + # from a separate directory outside the Stow directory or + # target directory. + for my $dir ("target", "stow", "run_from") { + my $path = "$test_dir/$dir"; + -d $path and remove_tree($path); + make_path($path); + } + + # Don't let user's ~/.stow-global-ignore affect test results + $ENV{HOME} = $abs_test_dir; + return $abs_test_dir; +} + +sub new_Stow { + my %opts = @_; + # These default paths assume that execution will be triggered from + # within the target directory. + $opts{dir} ||= '../stow'; + $opts{target} ||= '.'; + $opts{test_mode} = 1; + my $stow = eval { new Stow(%opts) }; + if ($@) { + confess "Error while trying to instantiate new Stow(%opts): $@"; + } + return $stow; +} + +sub new_compat_Stow { + my %opts = @_; + $opts{compat} = 1; + return new_Stow(%opts); +} + +#===== SUBROUTINE =========================================================== +# Name : make_link() +# Purpose : safely create a link +# Parameters: $link_src => path to the link +# : $link_dest => where the new link should point +# : $invalid => true iff $link_dest refers to non-existent file +# Returns : n/a +# Throws : fatal error if the link can not be safely created +# Comments : checks for existing nodes +#============================================================================ +sub make_link { + my ($link_src, $link_dest, $invalid) = @_; + + if (-l $link_src) { + my $old_source = readlink join('/', parent($link_src), $link_dest) + or croak "$link_src is already a link but could not read link $link_src/$link_dest"; + if ($old_source ne $link_dest) { + croak "$link_src already exists but points elsewhere\n"; + } + } + croak "$link_src already exists and is not a link\n" if -e $link_src; + my $abs_target = File::Spec->rel2abs($link_src); + my $link_src_container = dirname($abs_target); + my $abs_source = File::Spec->rel2abs($link_dest, $link_src_container); + #warn "t $link_src c $link_src_container as $abs_source"; + if (-e $abs_source) { + croak "Won't make invalid link pointing to existing $abs_target" + if $invalid; + } + else { + croak "Won't make link pointing to non-existent $abs_target" + unless $invalid; + } + symlink $link_dest, $link_src + or croak "could not create link $link_src => $link_dest ($!)\n"; +} + +#===== SUBROUTINE =========================================================== +# Name : make_invalid_link() +# Purpose : safely create an invalid link +# Parameters: $target => path to the link +# : $source => the non-existent source where the new link should point +# Returns : n/a +# Throws : fatal error if the link can not be safely created +# Comments : checks for existing nodes +#============================================================================ +sub make_invalid_link { + my ($target, $source, $allow_invalid) = @_; + make_link($target, $source, 1); +} + +#===== SUBROUTINE =========================================================== +# Name : create_file() +# Purpose : create an empty file +# Parameters: $path => proposed path to the file +# : $contents => (optional) contents to write to file +# Returns : n/a +# Throws : fatal error if the file could not be created +# Comments : detects clash with an existing non-file +#============================================================================ +sub make_file { + my ($path, $contents) = @_; + + if (-e $path and ! -f $path) { + croak "a non-file already exists at $path\n"; + } + + open my $FILE ,'>', $path + or croak "could not create file: $path ($!)\n"; + print $FILE $contents if defined $contents; + close $FILE; +} + +#===== SUBROUTINE =========================================================== +# Name : remove_link() +# Purpose : remove an esiting symbolic link +# Parameters: $path => path to the symbolic link +# Returns : n/a +# Throws : fatal error if the operation fails or if passed the path to a +# : non-link +# Comments : none +#============================================================================ +sub remove_link { + my ($path) = @_; + if (not -l $path) { + croak qq(remove_link() called with a non-link: $path); + } + unlink $path or croak "could not remove link: $path ($!)\n"; + return; +} + +#===== SUBROUTINE =========================================================== +# Name : remove_file() +# Purpose : remove an existing empty file +# Parameters: $path => the path to the empty file +# Returns : n/a +# Throws : fatal error if given file is non-empty or the operation fails +# Comments : none +#============================================================================ +sub remove_file { + my ($path) = @_; + if (-z $path) { + croak "file at $path is non-empty\n"; + } + unlink $path or croak "could not remove empty file: $path ($!)\n"; + return; +} + +#===== SUBROUTINE =========================================================== +# Name : remove_dir() +# Purpose : safely remove a tree of test files +# Parameters: $dir => path to the top of the tree +# Returns : n/a +# Throws : fatal error if the tree contains a non-link or non-empty file +# Comments : recursively removes directories containing softlinks empty files +#============================================================================ +sub remove_dir { + my ($dir) = @_; + + if (not -d $dir) { + croak "$dir is not a directory"; + } + + opendir my $DIR, $dir or croak "cannot read directory: $dir ($!)\n"; + my @listing = readdir $DIR; + closedir $DIR; + + NODE: + for my $node (@listing) { + next NODE if $node eq '.'; + next NODE if $node eq '..'; + + my $path = "$dir/$node"; + if (-l $path or (-f $path and -z $path) or $node eq $Stow::LOCAL_IGNORE_FILE) { + unlink $path or croak "cannot unlink $path ($!)\n"; + } + elsif (-d "$path") { + remove_dir($path); + } + else { + croak "$path is not a link, directory, or empty file\n"; + } + } + rmdir $dir or croak "cannot rmdir $dir ($!)\n"; + + return; +} + +#===== SUBROUTINE =========================================================== +# Name : cd() +# Purpose : wrapper around chdir +# Parameters: $dir => path to chdir to +# Returns : n/a +# Throws : fatal error if the chdir fails +# Comments : none +#============================================================================ +sub cd { + my ($dir) = @_; + chdir $dir or croak "Failed to chdir($dir): $!\n"; +} + +#===== SUBROUTINE =========================================================== +# Name : cat_file() +# Purpose : return file contents +# Parameters: $file => file to read +# Returns : n/a +# Throws : fatal error if the open fails +# Comments : none +#============================================================================ +sub cat_file { + my ($file) = @_; + open F, $file or croak "Failed to open($file): $!\n"; + my $contents = join '', ; + close(F); + return $contents; +} + +#===== SUBROUTINE =========================================================== +# Name : is_link() +# Purpose : assert path is a symlink +# Parameters: $path => path to check +# : $dest => target symlink should point to +#============================================================================ +sub is_link { + my ($path, $dest) = @_; + ok(-l $path => "$path should be symlink"); + is(readlink $path, $dest => "$path symlinks to $dest"); +} + +#===== SUBROUTINE =========================================================== +# Name : is_dir_not_symlink() +# Purpose : assert path is a directory not a symlink +# Parameters: $path => path to check +#============================================================================ +sub is_dir_not_symlink { + my ($path) = @_; + ok(! -l $path => "$path should not be symlink"); + ok(-d _ => "$path should be a directory"); +} + +#===== SUBROUTINE =========================================================== +# Name : is_nonexistent_path() +# Purpose : assert path does not exist +# Parameters: $path => path to check +#============================================================================ +sub is_nonexistent_path { + my ($path) = @_; + ok(! -l $path => "$path should not be symlink"); + ok(! -e _ => "$path should not exist"); +} + + +1; + +# Local variables: +# mode: perl +# end: +# vim: ft=perl diff --git a/t/unstow.t b/t/unstow.t new file mode 100755 index 0000000..4252694 --- /dev/null +++ b/t/unstow.t @@ -0,0 +1,549 @@ +#!/usr/bin/perl +# +# This file is part of GNU Stow. +# +# GNU Stow is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GNU Stow is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see https://www.gnu.org/licenses/. + +# +# Test unstowing packages +# + +use strict; +use warnings; + +use File::Spec qw(make_path); +use POSIX qw(getcwd); +use Test::More tests => 35; +use Test::Output; +use English qw(-no_match_vars); + +use testutil; +use Stow::Util qw(canon_path); + +my $repo = getcwd(); + +init_test_dirs($TEST_DIR); + +our $COMPAT_TEST_DIR = "${TEST_DIR}-compat"; +our $COMPAT_ABS_TEST_DIR = init_test_dirs($COMPAT_TEST_DIR); + +sub init_stow2 { + make_path('stow2'); # make our alternate stow dir a subdir of target + make_file('stow2/.stow'); +} + +sub create_unowned_files { + # Make things harder for Stow to figure out, by adding + # a bunch of alien files unrelated to Stow. + my @UNOWNED_DIRS = ('unowned-dir', '.unowned-dir', 'dot-unowned-dir'); + for my $dir ('.', @UNOWNED_DIRS) { + for my $subdir ('.', @UNOWNED_DIRS) { + make_path("$dir/$subdir"); + make_file("$dir/$subdir/unowned"); + make_file("$dir/$subdir/.unowned"); + make_file("$dir/$subdir/dot-unowned"); + } + } +} + +# Run a subtest twice, with compat off then on, in parallel test trees. +# +# Params: $name[, $setup], $test_code +# +# $setup is an optional ref to an options hash to pass into the new +# Stow() constructor, or a ref to a sub which performs setup before +# the constructor gets called and then returns that options hash. +sub subtests { + my $name = shift; + my $setup = @_ == 2 ? shift : {}; + my $code = shift; + + $ENV{HOME} = $ABS_TEST_DIR; + cd($repo); + cd("$TEST_DIR/target"); + create_unowned_files(); + # cd first to allow setup to cd somewhere else. + my $opts = ref($setup) eq 'HASH' ? $setup : $setup->($TEST_DIR); + subtest($name, sub { + make_path($opts->{dir}) if $opts->{dir}; + my $stow = new_Stow(%$opts); + $code->($stow, $TEST_DIR); + }); + + $ENV{HOME} = $COMPAT_ABS_TEST_DIR; + cd($repo); + cd("$COMPAT_TEST_DIR/target"); + create_unowned_files(); + # cd first to allow setup to cd somewhere else. + $opts = ref $setup eq 'HASH' ? $setup : $setup->($COMPAT_TEST_DIR); + subtest("$name (compat mode)", sub { + make_path($opts->{dir}) if $opts->{dir}; + my $stow = new_compat_Stow(%$opts); + $code->($stow, $COMPAT_TEST_DIR); + }); +} + +sub plan_tests { + my ($stow, $count) = @_; + plan tests => $stow->{compat} ? $count + 2 : $count; +} + +subtests("unstow a simple tree minimally", sub { + my ($stow) = @_; + plan tests => 3; + + make_path('../stow/pkg1/bin1'); + make_file('../stow/pkg1/bin1/file1'); + make_link('bin1', '../stow/pkg1/bin1'); + + $stow->plan_unstow('pkg1'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f '../stow/pkg1/bin1/file1'); + ok(! -e 'bin1' => 'unstow a simple tree'); +}); + +subtests("unstow a simple tree from an existing directory", sub { + my ($stow) = @_; + plan tests => 3; + + make_path('lib2'); + make_path('../stow/pkg2/lib2'); + make_file('../stow/pkg2/lib2/file2'); + make_link('lib2/file2', '../../stow/pkg2/lib2/file2'); + $stow->plan_unstow('pkg2'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f '../stow/pkg2/lib2/file2'); + ok(-d 'lib2' + => 'unstow simple tree from a pre-existing directory' + ); +}); + +subtests("fold tree after unstowing", sub { + my ($stow) = @_; + plan tests => 3; + + make_path('bin3'); + + make_path('../stow/pkg3a/bin3'); + make_file('../stow/pkg3a/bin3/file3a'); + make_link('bin3/file3a' => '../../stow/pkg3a/bin3/file3a'); # emulate stow + + make_path('../stow/pkg3b/bin3'); + make_file('../stow/pkg3b/bin3/file3b'); + make_link('bin3/file3b' => '../../stow/pkg3b/bin3/file3b'); # emulate stow + $stow->plan_unstow('pkg3b'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-l 'bin3'); + is(readlink('bin3'), '../stow/pkg3a/bin3' + => 'fold tree after unstowing' + ); +}); + +subtests("existing link is owned by stow but is invalid so it gets removed anyway", sub { + my ($stow) = @_; + plan tests => 2; + + make_path('bin4'); + make_path('../stow/pkg4/bin4'); + make_file('../stow/pkg4/bin4/file4'); + make_invalid_link('bin4/file4', '../../stow/pkg4/bin4/does-not-exist'); + + $stow->plan_unstow('pkg4'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(! -e 'bin4/file4' + => q(remove invalid link owned by stow) + ); +}); + +subtests("Existing invalid link is not owned by stow", sub { + my ($stow) = @_; + plan tests => 3; + + make_path('../stow/pkg5/bin5'); + make_invalid_link('bin5', '../not-stow'); + + $stow->plan_unstow('pkg5'); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-l 'bin5', 'invalid link not removed'); + is(readlink('bin5'), '../not-stow' => "invalid link not changed"); +}); + +subtests("Target already exists, is owned by stow, but points to a different package", sub { + my ($stow) = @_; + plan tests => 3; + + make_path('bin6'); + make_path('../stow/pkg6a/bin6'); + make_file('../stow/pkg6a/bin6/file6'); + make_link('bin6/file6', '../../stow/pkg6a/bin6/file6'); + + make_path('../stow/pkg6b/bin6'); + make_file('../stow/pkg6b/bin6/file6'); + + $stow->plan_unstow('pkg6b'); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-l 'bin6/file6'); + is( + readlink('bin6/file6'), + '../../stow/pkg6a/bin6/file6' + => q(ignore existing link that points to a different package) + ); +}); + +subtests("Don't unlink anything under the stow directory", + sub { + make_path('stow'); + return { dir => 'stow' }; + # target dir defaults to parent of stow, which is target directory + }, + sub { + plan tests => 5; + my ($stow) = @_; + + # Emulate stowing into ourself (bizarre corner case or accident): + make_path('stow/pkg7a/stow/pkg7b'); + make_file('stow/pkg7a/stow/pkg7b/file7b'); + # Make a package be a link to a package of the same name inside another package. + make_link('stow/pkg7b', '../stow/pkg7a/stow/pkg7b'); + + stderr_like( + sub { $stow->plan_unstow('pkg7b'); }, + $stow->{compat} ? qr/WARNING: skipping target which was current stow directory stow/ : qr// + => "warn when unstowing from ourself" + ); + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg7b'); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-l 'stow/pkg7b'); + is( + readlink('stow/pkg7b'), + '../stow/pkg7a/stow/pkg7b' + => q(don't unlink any nodes under the stow directory) + ); +}); + +subtests("Don't unlink any nodes under another stow directory", + sub { + make_path('stow'); + return { dir => 'stow' }; + }, + sub { + my ($stow) = @_; + plan tests => 5; + + init_stow2(); + # emulate stowing into ourself (bizarre corner case or accident) + make_path('stow/pkg8a/stow2/pkg8b'); + make_file('stow/pkg8a/stow2/pkg8b/file8b'); + make_link('stow2/pkg8b', '../stow/pkg8a/stow2/pkg8b'); + + stderr_like( + sub { $stow->plan_unstow('pkg8a'); }, + qr/WARNING: skipping marked Stow directory stow2/ + => "warn when skipping unstowing" + ); + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg8a'); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-l 'stow2/pkg8b'); + is( + readlink('stow2/pkg8b'), + '../stow/pkg8a/stow2/pkg8b' + => q(don't unlink any nodes under another stow directory) + ); +}); + +# This will be used by subsequent tests +sub check_protected_dirs_skipped { + my ($stderr) = @_; + for my $dir (qw{stow stow2}) { + like($stderr, + qr/WARNING: skipping marked Stow directory $dir/ + => "warn when skipping marked directory $dir"); + } +} + +subtests("overriding already stowed documentation", + {override => ['man9', 'info9']}, + sub { + my ($stow) = @_; + plan_tests($stow, 2); + + make_file('stow/.stow'); + init_stow2(); + make_path('../stow/pkg9a/man9/man1'); + make_file('../stow/pkg9a/man9/man1/file9.1'); + make_path('man9/man1'); + make_link('man9/man1/file9.1' => '../../../stow/pkg9a/man9/man1/file9.1'); # emulate stow + + make_path('../stow/pkg9b/man9/man1'); + make_file('../stow/pkg9b/man9/man1/file9.1'); + my $stderr = stderr_from { $stow->plan_unstow('pkg9b') }; + check_protected_dirs_skipped($stderr) if $stow->{compat}; + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(!-l 'man9/man1/file9.1' + => 'overriding existing documentation files' + ); +}); + +subtests("deferring to already stowed documentation", + {defer => ['man10', 'info10']}, + sub { + my ($stow) = @_; + plan_tests($stow, 3); + + init_stow2(); + make_path('../stow/pkg10a/man10/man1'); + make_file('../stow/pkg10a/man10/man1/file10a.1'); + make_path('man10/man1'); + make_link('man10/man1/file10a.1' => '../../../stow/pkg10a/man10/man1/file10a.1'); + + # need this to block folding + make_path('../stow/pkg10b/man10/man1'); + make_file('../stow/pkg10b/man10/man1/file10b.1'); + make_link('man10/man1/file10b.1' => '../../../stow/pkg10b/man10/man1/file10b.1'); + + make_path('../stow/pkg10c/man10/man1'); + make_file('../stow/pkg10c/man10/man1/file10a.1'); + my $stderr = stderr_from { $stow->plan_unstow('pkg10c') }; + check_protected_dirs_skipped($stderr) if $stow->{compat}; + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg10c'); + is($stow->get_conflict_count, 0, 'conflict count'); + is( + readlink('man10/man1/file10a.1'), + '../../../stow/pkg10a/man10/man1/file10a.1' + => 'defer to existing documentation files' + ); +}); + +subtests("Ignore temp files", + {ignore => ['~', '\.#.*']}, + sub { + my ($stow) = @_; + plan_tests($stow, 2); + + init_stow2(); + make_path('../stow/pkg12/man12/man1'); + make_file('../stow/pkg12/man12/man1/file12.1'); + make_file('../stow/pkg12/man12/man1/file12.1~'); + make_file('../stow/pkg12/man12/man1/.#file12.1'); + make_path('man12/man1'); + make_link('man12/man1/file12.1' => '../../../stow/pkg12/man12/man1/file12.1'); + + my $stderr = stderr_from { $stow->plan_unstow('pkg12') }; + check_protected_dirs_skipped($stderr) if $stow->{compat}; + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(! -e 'man12/man1/file12.1' => 'man12/man1/file12.1 was unstowed'); +}); + +subtests("Unstow an already unstowed package", sub { + my ($stow) = @_; + plan_tests($stow, 2); + + my $stderr = stderr_from { $stow->plan_unstow('pkg12') }; + check_protected_dirs_skipped($stderr) if $stow->{compat}; + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg12'); + is($stow->get_conflict_count, 0, 'conflict count'); +}); + +subtests("Unstow a never stowed package", sub { + my ($stow) = @_; + plan tests => 2; + + eval { remove_dir($stow->{target}); }; + mkdir($stow->{target}); + + $stow->plan_unstow('pkg12'); + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg12 which was never stowed'); + is($stow->get_conflict_count, 0, 'conflict count'); +}); + +subtests("Unstowing when target contains real files shouldn't be an issue", sub { + my ($stow) = @_; + plan tests => 4; + + # Test both a file which do / don't overlap with the package + make_path('man12/man1'); + make_file('man12/man1/alien'); + make_file('man12/man1/file12.1'); + + $stow->plan_unstow('pkg12'); + is($stow->get_tasks, 0, 'no tasks to process when unstowing pkg12 for third time'); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f 'man12/man1/alien', 'alien untouched'); + ok(-f 'man12/man1/file12.1', 'file overlapping with pkg untouched'); +}); + +subtests("unstow a simple tree minimally when cwd isn't target", + sub { + my $test_dir = shift; + cd($repo); + return { + dir => "$test_dir/stow", + target => "$test_dir/target" + } + }, + sub { + my ($stow, $test_dir) = @_; + plan tests => 3; + + make_path("$test_dir/stow/pkg13/bin13"); + make_file("$test_dir/stow/pkg13/bin13/file13"); + make_link("$test_dir/target/bin13", '../stow/pkg13/bin13'); + + $stow->plan_unstow('pkg13'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f "$test_dir/stow/pkg13/bin13/file13", 'package file untouched'); + ok(! -e "$test_dir/target/bin13" => 'bin13/ unstowed'); +}); + +subtests("unstow a simple tree minimally with absolute stow dir when cwd isn't target", + sub { + my $test_dir = shift; + cd($repo); + return { + dir => canon_path("$test_dir/stow"), + target => "$test_dir/target" + }; + }, + sub { + plan tests => 3; + my ($stow, $test_dir) = @_; + + make_path("$test_dir/stow/pkg14/bin14"); + make_file("$test_dir/stow/pkg14/bin14/file14"); + make_link("$test_dir/target/bin14", '../stow/pkg14/bin14'); + + $stow->plan_unstow('pkg14'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f "$test_dir/stow/pkg14/bin14/file14"); + ok(! -e "$test_dir/target/bin14" + => 'unstow a simple tree with absolute stow dir' + ); +}); + +subtests("unstow a simple tree minimally with absolute stow AND target dirs when cwd isn't target", + sub { + my $test_dir = shift; + cd($repo); + return { + dir => canon_path("$test_dir/stow"), + target => canon_path("$test_dir/target") + }; + }, + sub { + my ($stow, $test_dir) = @_; + plan tests => 3; + + make_path("$test_dir/stow/pkg15/bin15"); + make_file("$test_dir/stow/pkg15/bin15/file15"); + make_link("$test_dir/target/bin15", '../stow/pkg15/bin15'); + + $stow->plan_unstow('pkg15'); + $stow->process_tasks(); + is($stow->get_conflict_count, 0, 'conflict count'); + ok(-f "$test_dir/stow/pkg15/bin15/file15"); + ok(! -e "$test_dir/target/bin15" + => 'unstow a simple tree with absolute stow and target dirs' + ); +}); + +sub create_and_stow_pkg { + my ($id, $pkg) = @_; + + my $stow_pkg = "../stow/$id-$pkg"; + make_path($stow_pkg); + make_file("$stow_pkg/$id-file-$pkg"); + + # create a shallow hierarchy specific to this package and stow + # via folding + make_path("$stow_pkg/$id-$pkg-only-folded"); + make_file("$stow_pkg/$id-$pkg-only-folded/file-$pkg"); + make_link("$id-$pkg-only-folded", "$stow_pkg/$id-$pkg-only-folded"); + + # create a deeper hierarchy specific to this package and stow + # via folding + make_path("$stow_pkg/$id-$pkg-only-folded2/subdir"); + make_file("$stow_pkg/$id-$pkg-only-folded2/subdir/file-$pkg"); + make_link("$id-$pkg-only-folded2", + "$stow_pkg/$id-$pkg-only-folded2"); + + # create a shallow hierarchy specific to this package and stow + # without folding + make_path("$stow_pkg/$id-$pkg-only-unfolded"); + make_file("$stow_pkg/$id-$pkg-only-unfolded/file-$pkg"); + make_path("$id-$pkg-only-unfolded"); + make_link("$id-$pkg-only-unfolded/file-$pkg", + "../$stow_pkg/$id-$pkg-only-unfolded/file-$pkg"); + + # create a deeper hierarchy specific to this package and stow + # without folding + make_path("$stow_pkg/$id-$pkg-only-unfolded2/subdir"); + make_file("$stow_pkg/$id-$pkg-only-unfolded2/subdir/file-$pkg"); + make_path("$id-$pkg-only-unfolded2/subdir"); + make_link("$id-$pkg-only-unfolded2/subdir/file-$pkg", + "../../$stow_pkg/$id-$pkg-only-unfolded2/subdir/file-$pkg"); + + # create a shallow shared hierarchy which this package uses, and stow + # its contents without folding + make_path("$stow_pkg/$id-shared"); + make_file("$stow_pkg/$id-shared/file-$pkg"); + make_path("$id-shared"); + make_link("$id-shared/file-$pkg", + "../$stow_pkg/$id-shared/file-$pkg"); + + # create a deeper shared hierarchy which this package uses, and stow + # its contents without folding + make_path("$stow_pkg/$id-shared2/subdir"); + make_file("$stow_pkg/$id-shared2/file-$pkg"); + make_file("$stow_pkg/$id-shared2/subdir/file-$pkg"); + make_path("$id-shared2/subdir"); + make_link("$id-shared2/file-$pkg", + "../$stow_pkg/$id-shared2/file-$pkg"); + make_link("$id-shared2/subdir/file-$pkg", + "../../$stow_pkg/$id-shared2/subdir/file-$pkg"); +} + +subtest("unstow a tree with no-folding enabled - no refolding should take place", sub { + cd("$TEST_DIR/target"); + plan tests => 15; + + foreach my $pkg (qw{a b}) { + create_and_stow_pkg('no-folding', $pkg); + } + + my $stow = new_Stow('no-folding' => 1); + $stow->plan_unstow('no-folding-b'); + is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding'); + + $stow->process_tasks(); + + is_nonexistent_path('no-folding-b-only-folded'); + is_nonexistent_path('no-folding-b-only-folded2'); + is_nonexistent_path('no-folding-b-only-unfolded/file-b'); + is_nonexistent_path('no-folding-b-only-unfolded2/subdir/file-b'); + is_dir_not_symlink('no-folding-shared'); + is_dir_not_symlink('no-folding-shared2'); + is_dir_not_symlink('no-folding-shared2/subdir'); +}); + +# subtests("Test cleaning up subdirs with --paranoid option", sub { +# TODO +# }); diff --git a/t/unstow_contents.t b/t/unstow_contents.t deleted file mode 100644 index 06880f3..0000000 --- a/t/unstow_contents.t +++ /dev/null @@ -1,276 +0,0 @@ -#!/usr/local/bin/perl - -# -# Testing unstow_contents() -# - -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } - -use Test::More tests => 11; -use English qw(-no_match_vars); - -# local utility -sub reset_state { - @Tasks = (); - @Conflicts = (); - %Link_Task_For = (); - %Dir_Task_For = (); - %Options = (); - return; -} - -### setup -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); - -chdir 't/target'; -$Stow_Path= '../stow'; - -# Note that each of the following tests use a distinct set of files - -# -# unstow a simple tree minimally -# - -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg1/bin1'); -make_file('../stow/pkg1/bin1/file1'); -make_link('bin1','../stow/pkg1/bin1'); - -unstow_contents('../stow/pkg1','./'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -f '../stow/pkg1/bin1/file1' && ! -e 'bin1' - => 'unstow a simple tree' -); - -# -# unstow a simple tree from an existing directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('lib2'); -make_dir('../stow/pkg2/lib2'); -make_file('../stow/pkg2/lib2/file2'); -make_link('lib2/file2', '../../stow/pkg2/lib2/file2'); -unstow_contents('../stow/pkg2','./'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -f '../stow/pkg2/lib2/file2' && -d 'lib2' - => 'unstow simple tree from a pre-existing directory' -); - -# -# fold tree after unstowing -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin3'); - -make_dir('../stow/pkg3a/bin3'); -make_file('../stow/pkg3a/bin3/file3a'); -make_link('bin3/file3a' => '../../stow/pkg3a/bin3/file3a'); # emulate stow - -make_dir('../stow/pkg3b/bin3'); -make_file('../stow/pkg3b/bin3/file3b'); -make_link('bin3/file3b' => '../../stow/pkg3b/bin3/file3b'); # emulate stow -unstow_contents('../stow/pkg3b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'bin3' && - readlink('bin3') eq '../stow/pkg3a/bin3' - => 'fold tree after unstowing' -); - -# -# existing link is owned by stow but is invalid so it gets removed anyway -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin4'); -make_dir('../stow/pkg4/bin4'); -make_file('../stow/pkg4/bin4/file4'); -make_link('bin4/file4', '../../stow/pkg4/bin4/does-not-exist'); - -unstow_contents('../stow/pkg4', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - ! -e 'bin4/file4' - => q(remove invalid link owned by stow) -); - -# -# Existing link is not owned by stow -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg5/bin5'); -make_link('bin5', '../not-stow'); - -unstow_contents('../stow/pkg5', './'); -like( - $Conflicts[-1], qr(CONFLICT:.*existing target is not owned by stow) - => q(existing link not owned by stow) -); -# -# Target already exists, is owned by stow, but points to a different package -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin6'); -make_dir('../stow/pkg6a/bin6'); -make_file('../stow/pkg6a/bin6/file6'); -make_link('bin6/file6', '../../stow/pkg6a/bin6/file6'); - -make_dir('../stow/pkg6b/bin6'); -make_file('../stow/pkg6b/bin6/file6'); - -unstow_contents('../stow/pkg6b', './'); -ok( - scalar(@Conflicts) == 0 && - -l 'bin6/file6' && - readlink('bin6/file6') eq '../../stow/pkg6a/bin6/file6' - => q(ignore existing link that points to a different package) -); - -# -# Don't unlink anything under the stow directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('stow'); # make out stow dir a subdir of target -$Stow_Path = 'stow'; - -# emulate stowing into ourself (bizzare corner case or accident) -make_dir('stow/pkg7a/stow/pkg7b'); -make_file('stow/pkg7a/stow/pkg7b/file7b'); -make_link('stow/pkg7b', '../stow/pkg7a/stow/pkg7b'); - -unstow_contents('stow/pkg7b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'stow/pkg7b' && - readlink('stow/pkg7b') eq '../stow/pkg7a/stow/pkg7b' - => q(don't unlink any nodes under the stow directory) -); - -# -# Don't unlink any nodes under another stow directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('stow'); # make out stow dir a subdir of target -$Stow_Path = 'stow'; - -make_dir('stow2'); # make our alternate stow dir a subdir of target -make_file('stow2/.stow'); - -# emulate stowing into ourself (bizzare corner case or accident) -make_dir('stow/pkg8a/stow2/pkg8b'); -make_file('stow/pkg8a/stow2/pkg8b/file8b'); -make_link('stow2/pkg8b', '../stow/pkg8a/stow2/pkg8b'); - -unstow_contents('stow/pkg8a', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'stow2/pkg8b' && - readlink('stow2/pkg8b') eq '../stow/pkg8a/stow2/pkg8b' - => q(don't unlink any nodes under another stow directory) -); - -# -# overriding already stowed documentation -# -reset_state(); -$Stow_Path = '../stow'; -$Option{'verbose'} = 0; -$Option{'override'} = ['man9', 'info9']; - -make_dir('../stow/pkg9a/man9/man1'); -make_file('../stow/pkg9a/man9/man1/file9.1'); -make_dir('man9/man1'); -make_link('man9/man1/file9.1' => '../../../stow/pkg9a/man9/man1/file9.1'); # emulate stow - -make_dir('../stow/pkg9b/man9/man1'); -make_file('../stow/pkg9b/man9/man1/file9.1'); -unstow_contents('../stow/pkg9b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - !-l 'man9/man1/file9.1' - => 'overriding existing documentation files' -); - -# -# deferring to already stowed documentation -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'defer'} = ['man10', 'info10']; - -make_dir('../stow/pkg10a/man10/man1'); -make_file('../stow/pkg10a/man10/man1/file10a.1'); -make_dir('man10/man1'); -make_link('man10/man1/file10a.1' => '../../../stow/pkg10a/man10/man1/file10a.1'); - -# need this to block folding -make_dir('../stow/pkg10b/man10/man1'); -make_file('../stow/pkg10b/man10/man1/file10b.1'); -make_link('man10/man1/file10b.1' => '../../../stow/pkg10b/man10/man1/file10b.1'); - - -make_dir('../stow/pkg10c/man10/man1'); -make_file('../stow/pkg10c/man10/man1/file10a.1'); -unstow_contents('../stow/pkg10c', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('man10/man1/file10a.1') eq '../../../stow/pkg10a/man10/man1/file10a.1' - => 'defer to existing documentation files' -); - -# -# Ignore temp files -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'ignore'} = ['~', '\.#.*']; - -make_dir('../stow/pkg12/man12/man1'); -make_file('../stow/pkg12/man12/man1/file12.1'); -make_file('../stow/pkg12/man12/man1/file12.1~'); -make_file('../stow/pkg12/man12/man1/.#file12.1'); -make_dir('man12/man1'); -make_link('man12/man1/file12.1' => '../../../stow/pkg12/man12/man1/file12.1'); - -unstow_contents('../stow/pkg12', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - !-e 'man12/man1/file12.1' - => 'ignore temp files' -); - - -# Todo -# -# Test cleaning up subdirs with --paranoid option - diff --git a/t/unstow_contents_orig.t b/t/unstow_contents_orig.t deleted file mode 100644 index ead3dc5..0000000 --- a/t/unstow_contents_orig.t +++ /dev/null @@ -1,277 +0,0 @@ -#!/usr/local/bin/perl - -# -# Testing unstow_contents_orig() -# - -# load as a library -BEGIN { use lib qw(.); require "t/util.pm"; require "stow"; } - -use Test::More tests => 11; -use English qw(-no_match_vars); - -# local utility -sub reset_state { - @Tasks = (); - @Conflicts = (); - %Link_Task_For = (); - %Dir_Task_For = (); - %Options = (); - return; -} - -### setup -eval { remove_dir('t/target'); }; -eval { remove_dir('t/stow'); }; -make_dir('t/target'); -make_dir('t/stow'); - -chdir 't/target'; -$Stow_Path= '../stow'; - -# Note that each of the following tests use a distinct set of files - -# -# unstow a simple tree minimally -# - -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg1/bin1'); -make_file('../stow/pkg1/bin1/file1'); -make_link('bin1','../stow/pkg1/bin1'); - -unstow_contents_orig('../stow/pkg1','./'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -f '../stow/pkg1/bin1/file1' && ! -e 'bin1' - => 'unstow a simple tree' -); - -# -# unstow a simple tree from an existing directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('lib2'); -make_dir('../stow/pkg2/lib2'); -make_file('../stow/pkg2/lib2/file2'); -make_link('lib2/file2', '../../stow/pkg2/lib2/file2'); -unstow_contents_orig('../stow/pkg2','./'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -f '../stow/pkg2/lib2/file2' && -d 'lib2' - => 'unstow simple tree from a pre-existing directory' -); - -# -# fold tree after unstowing -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin3'); - -make_dir('../stow/pkg3a/bin3'); -make_file('../stow/pkg3a/bin3/file3a'); -make_link('bin3/file3a' => '../../stow/pkg3a/bin3/file3a'); # emulate stow - -make_dir('../stow/pkg3b/bin3'); -make_file('../stow/pkg3b/bin3/file3b'); -make_link('bin3/file3b' => '../../stow/pkg3b/bin3/file3b'); # emulate stow -unstow_contents_orig('../stow/pkg3b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'bin3' && - readlink('bin3') eq '../stow/pkg3a/bin3' - => 'fold tree after unstowing' -); - -# -# existing link is owned by stow but is invalid so it gets removed anyway -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin4'); -make_dir('../stow/pkg4/bin4'); -make_file('../stow/pkg4/bin4/file4'); -make_link('bin4/file4', '../../stow/pkg4/bin4/does-not-exist'); - -unstow_contents_orig('../stow/pkg4', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - ! -e 'bin4/file4' - => q(remove invalid link owned by stow) -); - -# -# Existing link is not owned by stow -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('../stow/pkg5/bin5'); -make_link('bin5', '../not-stow'); - -unstow_contents_orig('../stow/pkg5', './'); -#like( -# $Conflicts[-1], qr(CONFLICT:.*can't unlink.*not owned by stow) -# => q(existing link not owned by stow) -#); -ok( - -l 'bin5' && readlink('bin5') eq '../not-stow' - => q(existing link not owned by stow) -); -# -# Target already exists, is owned by stow, but points to a different package -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('bin6'); -make_dir('../stow/pkg6a/bin6'); -make_file('../stow/pkg6a/bin6/file6'); -make_link('bin6/file6', '../../stow/pkg6a/bin6/file6'); - -make_dir('../stow/pkg6b/bin6'); -make_file('../stow/pkg6b/bin6/file6'); - -unstow_contents_orig('../stow/pkg6b', './'); -ok( - -l 'bin6/file6' && readlink('bin6/file6') eq '../../stow/pkg6a/bin6/file6' - => q(existing link owned by stow but points to a different package) -); - -# -# Don't unlink anything under the stow directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('stow'); # make out stow dir a subdir of target -$Stow_Path = 'stow'; - -# emulate stowing into ourself (bizzare corner case or accident) -make_dir('stow/pkg7a/stow/pkg7b'); -make_file('stow/pkg7a/stow/pkg7b/file7b'); -make_link('stow/pkg7b', '../stow/pkg7a/stow/pkg7b'); - -unstow_contents_orig('stow/pkg7b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'stow/pkg7b' && - readlink('stow/pkg7b') eq '../stow/pkg7a/stow/pkg7b' - => q(don't unlink any nodes under the stow directory) -); - -# -# Don't unlink any nodes under another stow directory -# -reset_state(); -$Option{'verbose'} = 0; - -make_dir('stow'); # make out stow dir a subdir of target -$Stow_Path = 'stow'; - -make_dir('stow2'); # make our alternate stow dir a subdir of target -make_file('stow2/.stow'); - -# emulate stowing into ourself (bizzare corner case or accident) -make_dir('stow/pkg8a/stow2/pkg8b'); -make_file('stow/pkg8a/stow2/pkg8b/file8b'); -make_link('stow2/pkg8b', '../stow/pkg8a/stow2/pkg8b'); - -unstow_contents_orig('stow/pkg8a', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - -l 'stow2/pkg8b' && - readlink('stow2/pkg8b') eq '../stow/pkg8a/stow2/pkg8b' - => q(don't unlink any nodes under another stow directory) -); - -# -# overriding already stowed documentation -# -reset_state(); -$Stow_Path = '../stow'; -$Option{'verbose'} = 0; -$Option{'override'} = ['man9', 'info9']; - -make_dir('../stow/pkg9a/man9/man1'); -make_file('../stow/pkg9a/man9/man1/file9.1'); -make_dir('man9/man1'); -make_link('man9/man1/file9.1' => '../../../stow/pkg9a/man9/man1/file9.1'); # emulate stow - -make_dir('../stow/pkg9b/man9/man1'); -make_file('../stow/pkg9b/man9/man1/file9.1'); -unstow_contents_orig('../stow/pkg9b', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - !-l 'man9/man1/file9.1' - => 'overriding existing documentation files' -); - -# -# deferring to already stowed documentation -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'defer'} = ['man10', 'info10']; - -make_dir('../stow/pkg10a/man10/man1'); -make_file('../stow/pkg10a/man10/man1/file10a.1'); -make_dir('man10/man1'); -make_link('man10/man1/file10a.1' => '../../../stow/pkg10a/man10/man1/file10a.1'); - -# need this to block folding -make_dir('../stow/pkg10b/man10/man1'); -make_file('../stow/pkg10b/man10/man1/file10b.1'); -make_link('man10/man1/file10b.1' => '../../../stow/pkg10b/man10/man1/file10b.1'); - - -make_dir('../stow/pkg10c/man10/man1'); -make_file('../stow/pkg10c/man10/man1/file10a.1'); -unstow_contents_orig('../stow/pkg10c', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - readlink('man10/man1/file10a.1') eq '../../../stow/pkg10a/man10/man1/file10a.1' - => 'defer to existing documentation files' -); - -# -# Ignore temp files -# -reset_state(); -$Option{'verbose'} = 0; -$Option{'ignore'} = ['~', '\.#.*']; - -make_dir('../stow/pkg12/man12/man1'); -make_file('../stow/pkg12/man12/man1/file12.1'); -make_file('../stow/pkg12/man12/man1/file12.1~'); -make_file('../stow/pkg12/man12/man1/.#file12.1'); -make_dir('man12/man1'); -make_link('man12/man1/file12.1' => '../../../stow/pkg12/man12/man1/file12.1'); - -unstow_contents_orig('../stow/pkg12', './'); -process_tasks(); -ok( - scalar(@Conflicts) == 0 && - !-e 'man12/man1/file12.1' - => 'ignore temp files' -); - -# Todo -# -# Test cleaning up subdirs with --paranoid option - diff --git a/t/util.pm b/t/util.pm deleted file mode 100644 index abf670d..0000000 --- a/t/util.pm +++ /dev/null @@ -1,157 +0,0 @@ -# -# Utilities shared by test scripts -# - -use strict; -use warnings; - -#===== SUBROUTINE =========================================================== -# Name : make_link() -# Purpose : safely create a link -# Parameters: $target => path to the link -# : $source => where the new link should point -# Returns : n/a -# Throws : fatal error if the link can not be safely created -# Comments : checks for existing nodes -#============================================================================ -sub make_link { - my ($target, $source) = @_; - - if (-l $target) { - my $old_source = readlink join('/',parent($target),$source) - or die "could not read link $target/$source"; - if ($old_source ne $source) { - die "$target already exists but points elsewhere\n"; - } - } - elsif (-e $target ) { - die "$target already exists and is not a link\n"; - } - else { - symlink $source, $target - or die "could not create link $target => $source ($!)\n"; - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : make_dir() -# Purpose : create a directory and any requiste parents -# Parameters: $dir => path to the new directory -# Returns : n/a -# Throws : fatal error if the directory or any of its parents cannot be -# : created -# Comments : none -#============================================================================ -sub make_dir { - my ($dir) = @_; - - my @parents = (); - for my $part (split '/', $dir) { - my $path = join '/', @parents, $part; - if (not -d $path and not mkdir $path) { - die "could not create directory: $path ($!)\n"; - } - push @parents, $part; - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : create_file() -# Purpose : create an empty file -# Parameters: $path => proposed path to the file -# Returns : n/a -# Throws : fatal error if the file could not be created -# Comments : detects clash with an existing non-file -#============================================================================ -sub make_file { - my ($path) =@_; - - if (not -e $path) { - open my $FILE ,'>', $path - or die "could not create file: $path ($!)\n"; - close $FILE; - } - elsif ( not -f $path) { - die "a non-file already exists at $path\n"; - } - return; -} - -#===== SUBROUTINE =========================================================== -# Name : remove_link() -# Purpose : remove an esiting symbolic link -# Parameters: $path => path to the symbolic link -# Returns : n/a -# Throws : fatal error if the operation fails or if passed the path to a -# : non-link -# Comments : none -#============================================================================ -sub remove_link { - my ($path) = @_; - if (not -l $path) { - die qq(remove_link() called with a non-link: $path); - } - unlink $path or die "could not remove link: $path ($!)\n"; - return; -} - -#===== SUBROUTINE =========================================================== -# Name : remove_file() -# Purpose : remove an existing empty file -# Parameters: $path => the path to the empty file -# Returns : n/a -# Throws : fatal error if given file is non-empty or the operation fails -# Comments : none -#============================================================================ -sub remove_file { - my ($path) = @_; - if (-z $path) { - die "file at $path is non-empty\n"; - } - unlink $path or die "could not remove empty file: $path ($!)\n"; - return; -} - -#===== SUBROUTINE =========================================================== -# Name : remove_dir() -# Purpose : safely remove a tree of test files -# Parameters: $dir => path to the top of the tree -# Returns : n/a -# Throws : fatal error if the tree contains a non-link or non-empty file -# Comments : recursively removes directories containing softlinks empty files -#============================================================================ -sub remove_dir { - my ($dir) = @_; - - if (not -d $dir) { - die "$dir is not a directory"; - } - - opendir my $DIR, $dir or die "cannot read directory: $dir ($!)\n"; - my @listing = readdir $DIR; - closedir $DIR; - - NODE: - for my $node (@listing) { - next NODE if $node eq '.'; - next NODE if $node eq '..'; - - my $path = "$dir/$node"; - if (-l $path or -z $path) { - unlink $path or die "cannot unlink $path ($!)\n"; - } - elsif (-d "$path") { - remove_dir($path); - } - else { - die "$path is not a link, directory, or empty file\n"; - } - } - rmdir $dir or die "cannot rmdir $dir ($!)\n"; - - return; -} - -1; diff --git a/test-docker.sh b/test-docker.sh new file mode 100755 index 0000000..4bd446b --- /dev/null +++ b/test-docker.sh @@ -0,0 +1,37 @@ +#!/usr/bin/env bash + +# Test Stow across multiple Perl versions, by executing the +# Docker image built via build-docker.sh. +# +# Usage: ./test-docker.sh [list | PERL_VERSION] +# +# If the first argument is 'list', list available Perl versions. +# If the first argument is a Perl version, test just that version interactively. +# If no arguments are given test all available Perl versions non-interactively. + +version=$( tools/get-version ) + +if [ -z "$1" ]; then + # Normal non-interactive run + docker run --rm -it \ + -v $(pwd):$(pwd) \ + -w $(pwd) \ + stowtest:$version +elif [ "$1" == list ]; then + # List available Perl versions + docker run --rm -it \ + -v $(pwd):$(pwd) \ + -v $(pwd)/docker/run-stow-tests.sh:/run-stow-tests.sh \ + -w $(pwd) \ + -e LIST_PERL_VERSIONS=1 \ + stowtest:$version +else + # Interactive run for testing / debugging a particular version + perl_version="$1" + docker run --rm -it \ + -v $(pwd):$(pwd) \ + -v $(pwd)/docker/run-stow-tests.sh:/run-stow-tests.sh \ + -w $(pwd) \ + -e PERL_VERSION=$perl_version \ + stowtest:$version +fi diff --git a/texinfo.tex b/texinfo.tex deleted file mode 100644 index 8083622..0000000 --- a/texinfo.tex +++ /dev/null @@ -1,7482 +0,0 @@ -% texinfo.tex -- TeX macros to handle Texinfo files. -% -% Load plain if necessary, i.e., if running under initex. -\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi -% -\def\texinfoversion{2006-10-04.17} -% -% Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995, -% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free -% Software Foundation, Inc. -% -% This texinfo.tex file is free software; you can redistribute it and/or -% modify it under the terms of the GNU General Public License as -% published by the Free Software Foundation; either version 2, or (at -% your option) any later version. -% -% This texinfo.tex file is distributed in the hope that it will be -% useful, but WITHOUT ANY WARRANTY; without even the implied warranty -% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -% General Public License for more details. -% -% You should have received a copy of the GNU General Public License -% along with this texinfo.tex file; see the file COPYING. If not, write -% to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -% Boston, MA 02110-1301, USA. -% -% As a special exception, when this file is read by TeX when processing -% a Texinfo source document, you may use the result without -% restriction. (This has been our intent since Texinfo was invented.) -% -% Please try the latest version of texinfo.tex before submitting bug -% reports; you can get the latest version from: -% http://www.gnu.org/software/texinfo/ (the Texinfo home page), or -% ftp://tug.org/tex/texinfo.tex -% (and all CTAN mirrors, see http://www.ctan.org). -% The texinfo.tex in any given distribution could well be out -% of date, so if that's what you're using, please check. -% -% Send bug reports to bug-texinfo@gnu.org. Please include including a -% complete document in each bug report with which we can reproduce the -% problem. Patches are, of course, greatly appreciated. -% -% To process a Texinfo manual with TeX, it's most reliable to use the -% texi2dvi shell script that comes with the distribution. For a simple -% manual foo.texi, however, you can get away with this: -% tex foo.texi -% texindex foo.?? -% tex foo.texi -% tex foo.texi -% dvips foo.dvi -o # or whatever; this makes foo.ps. -% The extra TeX runs get the cross-reference information correct. -% Sometimes one run after texindex suffices, and sometimes you need more -% than two; texi2dvi does it as many times as necessary. -% -% It is possible to adapt texinfo.tex for other languages, to some -% extent. You can get the existing language-specific files from the -% full Texinfo distribution. -% -% The GNU Texinfo home page is http://www.gnu.org/software/texinfo. - - -\message{Loading texinfo [version \texinfoversion]:} - -% If in a .fmt file, print the version number -% and turn on active characters that we couldn't do earlier because -% they might have appeared in the input file name. -\everyjob{\message{[Texinfo version \texinfoversion]}% - \catcode`+=\active \catcode`\_=\active} - -\message{Basics,} -\chardef\other=12 - -% We never want plain's \outer definition of \+ in Texinfo. -% For @tex, we can use \tabalign. -\let\+ = \relax - -% Save some plain tex macros whose names we will redefine. -\let\ptexb=\b -\let\ptexbullet=\bullet -\let\ptexc=\c -\let\ptexcomma=\, -\let\ptexdot=\. -\let\ptexdots=\dots -\let\ptexend=\end -\let\ptexequiv=\equiv -\let\ptexexclam=\! -\let\ptexfootnote=\footnote -\let\ptexgtr=> -\let\ptexhat=^ -\let\ptexi=\i -\let\ptexindent=\indent -\let\ptexinsert=\insert -\let\ptexlbrace=\{ -\let\ptexless=< -\let\ptexnewwrite\newwrite -\let\ptexnoindent=\noindent -\let\ptexplus=+ -\let\ptexrbrace=\} -\let\ptexslash=\/ -\let\ptexstar=\* -\let\ptext=\t - -% If this character appears in an error message or help string, it -% starts a new line in the output. -\newlinechar = `^^J - -% Use TeX 3.0's \inputlineno to get the line number, for better error -% messages, but if we're using an old version of TeX, don't do anything. -% -\ifx\inputlineno\thisisundefined - \let\linenumber = \empty % Pre-3.0. -\else - \def\linenumber{l.\the\inputlineno:\space} -\fi - -% Set up fixed words for English if not already set. -\ifx\putwordAppendix\undefined \gdef\putwordAppendix{Appendix}\fi -\ifx\putwordChapter\undefined \gdef\putwordChapter{Chapter}\fi -\ifx\putwordfile\undefined \gdef\putwordfile{file}\fi -\ifx\putwordin\undefined \gdef\putwordin{in}\fi -\ifx\putwordIndexIsEmpty\undefined \gdef\putwordIndexIsEmpty{(Index is empty)}\fi -\ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi -\ifx\putwordInfo\undefined \gdef\putwordInfo{Info}\fi -\ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi -\ifx\putwordMethodon\undefined \gdef\putwordMethodon{Method on}\fi -\ifx\putwordNoTitle\undefined \gdef\putwordNoTitle{No Title}\fi -\ifx\putwordof\undefined \gdef\putwordof{of}\fi -\ifx\putwordon\undefined \gdef\putwordon{on}\fi -\ifx\putwordpage\undefined \gdef\putwordpage{page}\fi -\ifx\putwordsection\undefined \gdef\putwordsection{section}\fi -\ifx\putwordSection\undefined \gdef\putwordSection{Section}\fi -\ifx\putwordsee\undefined \gdef\putwordsee{see}\fi -\ifx\putwordSee\undefined \gdef\putwordSee{See}\fi -\ifx\putwordShortTOC\undefined \gdef\putwordShortTOC{Short Contents}\fi -\ifx\putwordTOC\undefined \gdef\putwordTOC{Table of Contents}\fi -% -\ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi -\ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi -\ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi -\ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi -\ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi -\ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi -\ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi -\ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi -\ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi -\ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi -\ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi -\ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi -% -\ifx\putwordDefmac\undefined \gdef\putwordDefmac{Macro}\fi -\ifx\putwordDefspec\undefined \gdef\putwordDefspec{Special Form}\fi -\ifx\putwordDefvar\undefined \gdef\putwordDefvar{Variable}\fi -\ifx\putwordDefopt\undefined \gdef\putwordDefopt{User Option}\fi -\ifx\putwordDeffunc\undefined \gdef\putwordDeffunc{Function}\fi - -% Since the category of space is not known, we have to be careful. -\chardef\spacecat = 10 -\def\spaceisspace{\catcode`\ =\spacecat} - -% sometimes characters are active, so we need control sequences. -\chardef\colonChar = `\: -\chardef\commaChar = `\, -\chardef\dashChar = `\- -\chardef\dotChar = `\. -\chardef\exclamChar= `\! -\chardef\lquoteChar= `\` -\chardef\questChar = `\? -\chardef\rquoteChar= `\' -\chardef\semiChar = `\; -\chardef\underChar = `\_ - -% Ignore a token. -% -\def\gobble#1{} - -% The following is used inside several \edef's. -\def\makecsname#1{\expandafter\noexpand\csname#1\endcsname} - -% Hyphenation fixes. -\hyphenation{ - Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script - ap-pen-dix bit-map bit-maps - data-base data-bases eshell fall-ing half-way long-est man-u-script - man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm - par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces - spell-ing spell-ings - stand-alone strong-est time-stamp time-stamps which-ever white-space - wide-spread wrap-around -} - -% Margin to add to right of even pages, to left of odd pages. -\newdimen\bindingoffset -\newdimen\normaloffset -\newdimen\pagewidth \newdimen\pageheight - -% For a final copy, take out the rectangles -% that mark overfull boxes (in case you have decided -% that the text looks ok even though it passes the margin). -% -\def\finalout{\overfullrule=0pt} - -% @| inserts a changebar to the left of the current line. It should -% surround any changed text. This approach does *not* work if the -% change spans more than two lines of output. To handle that, we would -% have adopt a much more difficult approach (putting marks into the main -% vertical list for the beginning and end of each change). -% -\def\|{% - % \vadjust can only be used in horizontal mode. - \leavevmode - % - % Append this vertical mode material after the current line in the output. - \vadjust{% - % We want to insert a rule with the height and depth of the current - % leading; that is exactly what \strutbox is supposed to record. - \vskip-\baselineskip - % - % \vadjust-items are inserted at the left edge of the type. So - % the \llap here moves out into the left-hand margin. - \llap{% - % - % For a thicker or thinner bar, change the `1pt'. - \vrule height\baselineskip width1pt - % - % This is the space between the bar and the text. - \hskip 12pt - }% - }% -} - -% Sometimes it is convenient to have everything in the transcript file -% and nothing on the terminal. We don't just call \tracingall here, -% since that produces some useless output on the terminal. We also make -% some effort to order the tracing commands to reduce output in the log -% file; cf. trace.sty in LaTeX. -% -\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}% -\def\loggingall{% - \tracingstats2 - \tracingpages1 - \tracinglostchars2 % 2 gives us more in etex - \tracingparagraphs1 - \tracingoutput1 - \tracingmacros2 - \tracingrestores1 - \showboxbreadth\maxdimen \showboxdepth\maxdimen - \ifx\eTeXversion\undefined\else % etex gives us more logging - \tracingscantokens1 - \tracingifs1 - \tracinggroups1 - \tracingnesting2 - \tracingassigns1 - \fi - \tracingcommands3 % 3 gives us more in etex - \errorcontextlines16 -}% - -% add check for \lastpenalty to plain's definitions. If the last thing -% we did was a \nobreak, we don't want to insert more space. -% -\def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount - \removelastskip\penalty-50\smallskip\fi\fi} -\def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount - \removelastskip\penalty-100\medskip\fi\fi} -\def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount - \removelastskip\penalty-200\bigskip\fi\fi} - -% For @cropmarks command. -% Do @cropmarks to get crop marks. -% -\newif\ifcropmarks -\let\cropmarks = \cropmarkstrue -% -% Dimensions to add cropmarks at corners. -% Added by P. A. MacKay, 12 Nov. 1986 -% -\newdimen\outerhsize \newdimen\outervsize % set by the paper size routines -\newdimen\cornerlong \cornerlong=1pc -\newdimen\cornerthick \cornerthick=.3pt -\newdimen\topandbottommargin \topandbottommargin=.75in - -% Main output routine. -\chardef\PAGE = 255 -\output = {\onepageout{\pagecontents\PAGE}} - -\newbox\headlinebox -\newbox\footlinebox - -% \onepageout takes a vbox as an argument. Note that \pagecontents -% does insertions, but you have to call it yourself. -\def\onepageout#1{% - \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi - % - \ifodd\pageno \advance\hoffset by \bindingoffset - \else \advance\hoffset by -\bindingoffset\fi - % - % Do this outside of the \shipout so @code etc. will be expanded in - % the headline as they should be, not taken literally (outputting ''code). - \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}% - \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}% - % - {% - % Have to do this stuff outside the \shipout because we want it to - % take effect in \write's, yet the group defined by the \vbox ends - % before the \shipout runs. - % - \indexdummies % don't expand commands in the output. - \normalturnoffactive % \ in index entries must not stay \, e.g., if - % the page break happens to be in the middle of an example. - % We don't want .vr (or whatever) entries like this: - % \entry{{\tt \indexbackslash }acronym}{32}{\code {\acronym}} - % "\acronym" won't work when it's read back in; - % it needs to be - % {\code {{\tt \backslashcurfont }acronym} - \shipout\vbox{% - % Do this early so pdf references go to the beginning of the page. - \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi - % - \ifcropmarks \vbox to \outervsize\bgroup - \hsize = \outerhsize - \vskip-\topandbottommargin - \vtop to0pt{% - \line{\ewtop\hfil\ewtop}% - \nointerlineskip - \line{% - \vbox{\moveleft\cornerthick\nstop}% - \hfill - \vbox{\moveright\cornerthick\nstop}% - }% - \vss}% - \vskip\topandbottommargin - \line\bgroup - \hfil % center the page within the outer (page) hsize. - \ifodd\pageno\hskip\bindingoffset\fi - \vbox\bgroup - \fi - % - \unvbox\headlinebox - \pagebody{#1}% - \ifdim\ht\footlinebox > 0pt - % Only leave this space if the footline is nonempty. - % (We lessened \vsize for it in \oddfootingyyy.) - % The \baselineskip=24pt in plain's \makefootline has no effect. - \vskip 24pt - \unvbox\footlinebox - \fi - % - \ifcropmarks - \egroup % end of \vbox\bgroup - \hfil\egroup % end of (centering) \line\bgroup - \vskip\topandbottommargin plus1fill minus1fill - \boxmaxdepth = \cornerthick - \vbox to0pt{\vss - \line{% - \vbox{\moveleft\cornerthick\nsbot}% - \hfill - \vbox{\moveright\cornerthick\nsbot}% - }% - \nointerlineskip - \line{\ewbot\hfil\ewbot}% - }% - \egroup % \vbox from first cropmarks clause - \fi - }% end of \shipout\vbox - }% end of group with \indexdummies - \advancepageno - \ifnum\outputpenalty>-20000 \else\dosupereject\fi -} - -\newinsert\margin \dimen\margin=\maxdimen - -\def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}} -{\catcode`\@ =11 -\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi -% marginal hacks, juha@viisa.uucp (Juha Takala) -\ifvoid\margin\else % marginal info is present - \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi -\dimen@=\dp#1 \unvbox#1 -\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi -\ifr@ggedbottom \kern-\dimen@ \vfil \fi} -} - -% Here are the rules for the cropmarks. Note that they are -% offset so that the space between them is truly \outerhsize or \outervsize -% (P. A. MacKay, 12 November, 1986) -% -\def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong} -\def\nstop{\vbox - {\hrule height\cornerthick depth\cornerlong width\cornerthick}} -\def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong} -\def\nsbot{\vbox - {\hrule height\cornerlong depth\cornerthick width\cornerthick}} - -% Parse an argument, then pass it to #1. The argument is the rest of -% the input line (except we remove a trailing comment). #1 should be a -% macro which expects an ordinary undelimited TeX argument. -% -\def\parsearg{\parseargusing{}} -\def\parseargusing#1#2{% - \def\argtorun{#2}% - \begingroup - \obeylines - \spaceisspace - #1% - \parseargline\empty% Insert the \empty token, see \finishparsearg below. -} - -{\obeylines % - \gdef\parseargline#1^^M{% - \endgroup % End of the group started in \parsearg. - \argremovecomment #1\comment\ArgTerm% - }% -} - -% First remove any @comment, then any @c comment. -\def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm} -\def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm} - -% Each occurence of `\^^M' or `\^^M' is replaced by a single space. -% -% \argremovec might leave us with trailing space, e.g., -% @end itemize @c foo -% This space token undergoes the same procedure and is eventually removed -% by \finishparsearg. -% -\def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M} -\def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M} -\def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{% - \def\temp{#3}% - \ifx\temp\empty - % Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp: - \let\temp\finishparsearg - \else - \let\temp\argcheckspaces - \fi - % Put the space token in: - \temp#1 #3\ArgTerm -} - -% If a _delimited_ argument is enclosed in braces, they get stripped; so -% to get _exactly_ the rest of the line, we had to prevent such situation. -% We prepended an \empty token at the very beginning and we expand it now, -% just before passing the control to \argtorun. -% (Similarily, we have to think about #3 of \argcheckspacesY above: it is -% either the null string, or it ends with \^^M---thus there is no danger -% that a pair of braces would be stripped. -% -% But first, we have to remove the trailing space token. -% -\def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}} - -% \parseargdef\foo{...} -% is roughly equivalent to -% \def\foo{\parsearg\Xfoo} -% \def\Xfoo#1{...} -% -% Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my -% favourite TeX trick. --kasal, 16nov03 - -\def\parseargdef#1{% - \expandafter \doparseargdef \csname\string#1\endcsname #1% -} -\def\doparseargdef#1#2{% - \def#2{\parsearg#1}% - \def#1##1% -} - -% Several utility definitions with active space: -{ - \obeyspaces - \gdef\obeyedspace{ } - - % Make each space character in the input produce a normal interword - % space in the output. Don't allow a line break at this space, as this - % is used only in environments like @example, where each line of input - % should produce a line of output anyway. - % - \gdef\sepspaces{\obeyspaces\let =\tie} - - % If an index command is used in an @example environment, any spaces - % therein should become regular spaces in the raw index file, not the - % expansion of \tie (\leavevmode \penalty \@M \ ). - \gdef\unsepspaces{\let =\space} -} - - -\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next} - -% Define the framework for environments in texinfo.tex. It's used like this: -% -% \envdef\foo{...} -% \def\Efoo{...} -% -% It's the responsibility of \envdef to insert \begingroup before the -% actual body; @end closes the group after calling \Efoo. \envdef also -% defines \thisenv, so the current environment is known; @end checks -% whether the environment name matches. The \checkenv macro can also be -% used to check whether the current environment is the one expected. -% -% Non-false conditionals (@iftex, @ifset) don't fit into this, so they -% are not treated as enviroments; they don't open a group. (The -% implementation of @end takes care not to call \endgroup in this -% special case.) - - -% At runtime, environments start with this: -\def\startenvironment#1{\begingroup\def\thisenv{#1}} -% initialize -\let\thisenv\empty - -% ... but they get defined via ``\envdef\foo{...}'': -\long\def\envdef#1#2{\def#1{\startenvironment#1#2}} -\def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}} - -% Check whether we're in the right environment: -\def\checkenv#1{% - \def\temp{#1}% - \ifx\thisenv\temp - \else - \badenverr - \fi -} - -% Evironment mismatch, #1 expected: -\def\badenverr{% - \errhelp = \EMsimple - \errmessage{This command can appear only \inenvironment\temp, - not \inenvironment\thisenv}% -} -\def\inenvironment#1{% - \ifx#1\empty - out of any environment% - \else - in environment \expandafter\string#1% - \fi -} - -% @end foo executes the definition of \Efoo. -% But first, it executes a specialized version of \checkenv -% -\parseargdef\end{% - \if 1\csname iscond.#1\endcsname - \else - % The general wording of \badenverr may not be ideal, but... --kasal, 06nov03 - \expandafter\checkenv\csname#1\endcsname - \csname E#1\endcsname - \endgroup - \fi -} - -\newhelp\EMsimple{Press RETURN to continue.} - - -%% Simple single-character @ commands - -% @@ prints an @ -% Kludge this until the fonts are right (grr). -\def\@{{\tt\char64}} - -% This is turned off because it was never documented -% and you can use @w{...} around a quote to suppress ligatures. -%% Define @` and @' to be the same as ` and ' -%% but suppressing ligatures. -%\def\`{{`}} -%\def\'{{'}} - -% Used to generate quoted braces. -\def\mylbrace {{\tt\char123}} -\def\myrbrace {{\tt\char125}} -\let\{=\mylbrace -\let\}=\myrbrace -\begingroup - % Definitions to produce \{ and \} commands for indices, - % and @{ and @} for the aux/toc files. - \catcode`\{ = \other \catcode`\} = \other - \catcode`\[ = 1 \catcode`\] = 2 - \catcode`\! = 0 \catcode`\\ = \other - !gdef!lbracecmd[\{]% - !gdef!rbracecmd[\}]% - !gdef!lbraceatcmd[@{]% - !gdef!rbraceatcmd[@}]% -!endgroup - -% @comma{} to avoid , parsing problems. -\let\comma = , - -% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent -% Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H. -\let\, = \c -\let\dotaccent = \. -\def\ringaccent#1{{\accent23 #1}} -\let\tieaccent = \t -\let\ubaraccent = \b -\let\udotaccent = \d - -% Other special characters: @questiondown @exclamdown @ordf @ordm -% Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss. -\def\questiondown{?`} -\def\exclamdown{!`} -\def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}} -\def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}} - -% Dotless i and dotless j, used for accents. -\def\imacro{i} -\def\jmacro{j} -\def\dotless#1{% - \def\temp{#1}% - \ifx\temp\imacro \ptexi - \else\ifx\temp\jmacro \j - \else \errmessage{@dotless can be used only with i or j}% - \fi\fi -} - -% The \TeX{} logo, as in plain, but resetting the spacing so that a -% period following counts as ending a sentence. (Idea found in latex.) -% -\edef\TeX{\TeX \spacefactor=1000 } - -% @LaTeX{} logo. Not quite the same results as the definition in -% latex.ltx, since we use a different font for the raised A; it's most -% convenient for us to use an explicitly smaller font, rather than using -% the \scriptstyle font (since we don't reset \scriptstyle and -% \scriptscriptstyle). -% -\def\LaTeX{% - L\kern-.36em - {\setbox0=\hbox{T}% - \vbox to \ht0{\hbox{\selectfonts\lllsize A}\vss}}% - \kern-.15em - \TeX -} - -% Be sure we're in horizontal mode when doing a tie, since we make space -% equivalent to this in @example-like environments. Otherwise, a space -% at the beginning of a line will start with \penalty -- and -% since \penalty is valid in vertical mode, we'd end up putting the -% penalty on the vertical list instead of in the new paragraph. -{\catcode`@ = 11 - % Avoid using \@M directly, because that causes trouble - % if the definition is written into an index file. - \global\let\tiepenalty = \@M - \gdef\tie{\leavevmode\penalty\tiepenalty\ } -} - -% @: forces normal size whitespace following. -\def\:{\spacefactor=1000 } - -% @* forces a line break. -\def\*{\hfil\break\hbox{}\ignorespaces} - -% @/ allows a line break. -\let\/=\allowbreak - -% @. is an end-of-sentence period. -\def\.{.\spacefactor=\endofsentencespacefactor\space} - -% @! is an end-of-sentence bang. -\def\!{!\spacefactor=\endofsentencespacefactor\space} - -% @? is an end-of-sentence query. -\def\?{?\spacefactor=\endofsentencespacefactor\space} - -% @frenchspacing on|off says whether to put extra space after punctuation. -% -\def\onword{on} -\def\offword{off} -% -\parseargdef\frenchspacing{% - \def\temp{#1}% - \ifx\temp\onword \plainfrenchspacing - \else\ifx\temp\offword \plainnonfrenchspacing - \else - \errhelp = \EMsimple - \errmessage{Unknown @frenchspacing option `\temp', must be on/off}% - \fi\fi -} - -% @w prevents a word break. Without the \leavevmode, @w at the -% beginning of a paragraph, when TeX is still in vertical mode, would -% produce a whole line of output instead of starting the paragraph. -\def\w#1{\leavevmode\hbox{#1}} - -% @group ... @end group forces ... to be all on one page, by enclosing -% it in a TeX vbox. We use \vtop instead of \vbox to construct the box -% to keep its height that of a normal line. According to the rules for -% \topskip (p.114 of the TeXbook), the glue inserted is -% max (\topskip - \ht (first item), 0). If that height is large, -% therefore, no glue is inserted, and the space between the headline and -% the text is small, which looks bad. -% -% Another complication is that the group might be very large. This can -% cause the glue on the previous page to be unduly stretched, because it -% does not have much material. In this case, it's better to add an -% explicit \vfill so that the extra space is at the bottom. The -% threshold for doing this is if the group is more than \vfilllimit -% percent of a page (\vfilllimit can be changed inside of @tex). -% -\newbox\groupbox -\def\vfilllimit{0.7} -% -\envdef\group{% - \ifnum\catcode`\^^M=\active \else - \errhelp = \groupinvalidhelp - \errmessage{@group invalid in context where filling is enabled}% - \fi - \startsavinginserts - % - \setbox\groupbox = \vtop\bgroup - % Do @comment since we are called inside an environment such as - % @example, where each end-of-line in the input causes an - % end-of-line in the output. We don't want the end-of-line after - % the `@group' to put extra space in the output. Since @group - % should appear on a line by itself (according to the Texinfo - % manual), we don't worry about eating any user text. - \comment -} -% -% The \vtop produces a box with normal height and large depth; thus, TeX puts -% \baselineskip glue before it, and (when the next line of text is done) -% \lineskip glue after it. Thus, space below is not quite equal to space -% above. But it's pretty close. -\def\Egroup{% - % To get correct interline space between the last line of the group - % and the first line afterwards, we have to propagate \prevdepth. - \endgraf % Not \par, as it may have been set to \lisppar. - \global\dimen1 = \prevdepth - \egroup % End the \vtop. - % \dimen0 is the vertical size of the group's box. - \dimen0 = \ht\groupbox \advance\dimen0 by \dp\groupbox - % \dimen2 is how much space is left on the page (more or less). - \dimen2 = \pageheight \advance\dimen2 by -\pagetotal - % if the group doesn't fit on the current page, and it's a big big - % group, force a page break. - \ifdim \dimen0 > \dimen2 - \ifdim \pagetotal < \vfilllimit\pageheight - \page - \fi - \fi - \box\groupbox - \prevdepth = \dimen1 - \checkinserts -} -% -% TeX puts in an \escapechar (i.e., `@') at the beginning of the help -% message, so this ends up printing `@group can only ...'. -% -\newhelp\groupinvalidhelp{% -group can only be used in environments such as @example,^^J% -where each line of input produces a line of output.} - -% @need space-in-mils -% forces a page break if there is not space-in-mils remaining. - -\newdimen\mil \mil=0.001in - -% Old definition--didn't work. -%\parseargdef\need{\par % -%% This method tries to make TeX break the page naturally -%% if the depth of the box does not fit. -%{\baselineskip=0pt% -%\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak -%\prevdepth=-1000pt -%}} - -\parseargdef\need{% - % Ensure vertical mode, so we don't make a big box in the middle of a - % paragraph. - \par - % - % If the @need value is less than one line space, it's useless. - \dimen0 = #1\mil - \dimen2 = \ht\strutbox - \advance\dimen2 by \dp\strutbox - \ifdim\dimen0 > \dimen2 - % - % Do a \strut just to make the height of this box be normal, so the - % normal leading is inserted relative to the preceding line. - % And a page break here is fine. - \vtop to #1\mil{\strut\vfil}% - % - % TeX does not even consider page breaks if a penalty added to the - % main vertical list is 10000 or more. But in order to see if the - % empty box we just added fits on the page, we must make it consider - % page breaks. On the other hand, we don't want to actually break the - % page after the empty box. So we use a penalty of 9999. - % - % There is an extremely small chance that TeX will actually break the - % page at this \penalty, if there are no other feasible breakpoints in - % sight. (If the user is using lots of big @group commands, which - % almost-but-not-quite fill up a page, TeX will have a hard time doing - % good page breaking, for example.) However, I could not construct an - % example where a page broke at this \penalty; if it happens in a real - % document, then we can reconsider our strategy. - \penalty9999 - % - % Back up by the size of the box, whether we did a page break or not. - \kern -#1\mil - % - % Do not allow a page break right after this kern. - \nobreak - \fi -} - -% @br forces paragraph break (and is undocumented). - -\let\br = \par - -% @page forces the start of a new page. -% -\def\page{\par\vfill\supereject} - -% @exdent text.... -% outputs text on separate line in roman font, starting at standard page margin - -% This records the amount of indent in the innermost environment. -% That's how much \exdent should take out. -\newskip\exdentamount - -% This defn is used inside fill environments such as @defun. -\parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break} - -% This defn is used inside nofill environments such as @example. -\parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount - \leftline{\hskip\leftskip{\rm#1}}}} - -% @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current -% paragraph. For more general purposes, use the \margin insertion -% class. WHICH is `l' or `r'. -% -\newskip\inmarginspacing \inmarginspacing=1cm -\def\strutdepth{\dp\strutbox} -% -\def\doinmargin#1#2{\strut\vadjust{% - \nobreak - \kern-\strutdepth - \vtop to \strutdepth{% - \baselineskip=\strutdepth - \vss - % if you have multiple lines of stuff to put here, you'll need to - % make the vbox yourself of the appropriate size. - \ifx#1l% - \llap{\ignorespaces #2\hskip\inmarginspacing}% - \else - \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}% - \fi - \null - }% -}} -\def\inleftmargin{\doinmargin l} -\def\inrightmargin{\doinmargin r} -% -% @inmargin{TEXT [, RIGHT-TEXT]} -% (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right; -% else use TEXT for both). -% -\def\inmargin#1{\parseinmargin #1,,\finish} -\def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing. - \setbox0 = \hbox{\ignorespaces #2}% - \ifdim\wd0 > 0pt - \def\lefttext{#1}% have both texts - \def\righttext{#2}% - \else - \def\lefttext{#1}% have only one text - \def\righttext{#1}% - \fi - % - \ifodd\pageno - \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin - \else - \def\temp{\inleftmargin\lefttext}% - \fi - \temp -} - -% @include file insert text of that file as input. -% -\def\include{\parseargusing\filenamecatcodes\includezzz} -\def\includezzz#1{% - \pushthisfilestack - \def\thisfile{#1}% - {% - \makevalueexpandable - \def\temp{\input #1 }% - \expandafter - }\temp - \popthisfilestack -} -\def\filenamecatcodes{% - \catcode`\\=\other - \catcode`~=\other - \catcode`^=\other - \catcode`_=\other - \catcode`|=\other - \catcode`<=\other - \catcode`>=\other - \catcode`+=\other - \catcode`-=\other -} - -\def\pushthisfilestack{% - \expandafter\pushthisfilestackX\popthisfilestack\StackTerm -} -\def\pushthisfilestackX{% - \expandafter\pushthisfilestackY\thisfile\StackTerm -} -\def\pushthisfilestackY #1\StackTerm #2\StackTerm {% - \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}% -} - -\def\popthisfilestack{\errthisfilestackempty} -\def\errthisfilestackempty{\errmessage{Internal error: - the stack of filenames is empty.}} - -\def\thisfile{} - -% @center line -% outputs that line, centered. -% -\parseargdef\center{% - \ifhmode - \let\next\centerH - \else - \let\next\centerV - \fi - \next{\hfil \ignorespaces#1\unskip \hfil}% -} -\def\centerH#1{% - {% - \hfil\break - \advance\hsize by -\leftskip - \advance\hsize by -\rightskip - \line{#1}% - \break - }% -} -\def\centerV#1{\line{\kern\leftskip #1\kern\rightskip}} - -% @sp n outputs n lines of vertical space - -\parseargdef\sp{\vskip #1\baselineskip} - -% @comment ...line which is ignored... -% @c is the same as @comment -% @ignore ... @end ignore is another way to write a comment - -\def\comment{\begingroup \catcode`\^^M=\other% -\catcode`\@=\other \catcode`\{=\other \catcode`\}=\other% -\commentxxx} -{\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}} - -\let\c=\comment - -% @paragraphindent NCHARS -% We'll use ems for NCHARS, close enough. -% NCHARS can also be the word `asis' or `none'. -% We cannot feasibly implement @paragraphindent asis, though. -% -\def\asisword{asis} % no translation, these are keywords -\def\noneword{none} -% -\parseargdef\paragraphindent{% - \def\temp{#1}% - \ifx\temp\asisword - \else - \ifx\temp\noneword - \defaultparindent = 0pt - \else - \defaultparindent = #1em - \fi - \fi - \parindent = \defaultparindent -} - -% @exampleindent NCHARS -% We'll use ems for NCHARS like @paragraphindent. -% It seems @exampleindent asis isn't necessary, but -% I preserve it to make it similar to @paragraphindent. -\parseargdef\exampleindent{% - \def\temp{#1}% - \ifx\temp\asisword - \else - \ifx\temp\noneword - \lispnarrowing = 0pt - \else - \lispnarrowing = #1em - \fi - \fi -} - -% @firstparagraphindent WORD -% If WORD is `none', then suppress indentation of the first paragraph -% after a section heading. If WORD is `insert', then do indent at such -% paragraphs. -% -% The paragraph indentation is suppressed or not by calling -% \suppressfirstparagraphindent, which the sectioning commands do. -% We switch the definition of this back and forth according to WORD. -% By default, we suppress indentation. -% -\def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent} -\def\insertword{insert} -% -\parseargdef\firstparagraphindent{% - \def\temp{#1}% - \ifx\temp\noneword - \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent - \else\ifx\temp\insertword - \let\suppressfirstparagraphindent = \relax - \else - \errhelp = \EMsimple - \errmessage{Unknown @firstparagraphindent option `\temp'}% - \fi\fi -} - -% Here is how we actually suppress indentation. Redefine \everypar to -% \kern backwards by \parindent, and then reset itself to empty. -% -% We also make \indent itself not actually do anything until the next -% paragraph. -% -\gdef\dosuppressfirstparagraphindent{% - \gdef\indent{% - \restorefirstparagraphindent - \indent - }% - \gdef\noindent{% - \restorefirstparagraphindent - \noindent - }% - \global\everypar = {% - \kern -\parindent - \restorefirstparagraphindent - }% -} - -\gdef\restorefirstparagraphindent{% - \global \let \indent = \ptexindent - \global \let \noindent = \ptexnoindent - \global \everypar = {}% -} - - -% @asis just yields its argument. Used with @table, for example. -% -\def\asis#1{#1} - -% @math outputs its argument in math mode. -% -% One complication: _ usually means subscripts, but it could also mean -% an actual _ character, as in @math{@var{some_variable} + 1}. So make -% _ active, and distinguish by seeing if the current family is \slfam, -% which is what @var uses. -{ - \catcode`\_ = \active - \gdef\mathunderscore{% - \catcode`\_=\active - \def_{\ifnum\fam=\slfam \_\else\sb\fi}% - } -} -% Another complication: we want \\ (and @\) to output a \ character. -% FYI, plain.tex uses \\ as a temporary control sequence (why?), but -% this is not advertised and we don't care. Texinfo does not -% otherwise define @\. -% -% The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\. -\def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi} -% -\def\math{% - \tex - \mathunderscore - \let\\ = \mathbackslash - \mathactive - $\finishmath -} -\def\finishmath#1{#1$\endgroup} % Close the group opened by \tex. - -% Some active characters (such as <) are spaced differently in math. -% We have to reset their definitions in case the @math was an argument -% to a command which sets the catcodes (such as @item or @section). -% -{ - \catcode`^ = \active - \catcode`< = \active - \catcode`> = \active - \catcode`+ = \active - \gdef\mathactive{% - \let^ = \ptexhat - \let< = \ptexless - \let> = \ptexgtr - \let+ = \ptexplus - } -} - -% @bullet and @minus need the same treatment as @math, just above. -\def\bullet{$\ptexbullet$} -\def\minus{$-$} - -% @dots{} outputs an ellipsis using the current font. -% We do .5em per period so that it has the same spacing in the cm -% typewriter fonts as three actual period characters; on the other hand, -% in other typewriter fonts three periods are wider than 1.5em. So do -% whichever is larger. -% -\def\dots{% - \leavevmode - \setbox0=\hbox{...}% get width of three periods - \ifdim\wd0 > 1.5em - \dimen0 = \wd0 - \else - \dimen0 = 1.5em - \fi - \hbox to \dimen0{% - \hskip 0pt plus.25fil - .\hskip 0pt plus1fil - .\hskip 0pt plus1fil - .\hskip 0pt plus.5fil - }% -} - -% @enddots{} is an end-of-sentence ellipsis. -% -\def\enddots{% - \dots - \spacefactor=\endofsentencespacefactor -} - -% @comma{} is so commas can be inserted into text without messing up -% Texinfo's parsing. -% -\let\comma = , - -% @refill is a no-op. -\let\refill=\relax - -% If working on a large document in chapters, it is convenient to -% be able to disable indexing, cross-referencing, and contents, for test runs. -% This is done with @novalidate (before @setfilename). -% -\newif\iflinks \linkstrue % by default we want the aux files. -\let\novalidate = \linksfalse - -% @setfilename is done at the beginning of every texinfo file. -% So open here the files we need to have open while reading the input. -% This makes it possible to make a .fmt file for texinfo. -\def\setfilename{% - \fixbackslash % Turn off hack to swallow `\input texinfo'. - \iflinks - \tryauxfile - % Open the new aux file. TeX will close it automatically at exit. - \immediate\openout\auxfile=\jobname.aux - \fi % \openindices needs to do some work in any case. - \openindices - \let\setfilename=\comment % Ignore extra @setfilename cmds. - % - % If texinfo.cnf is present on the system, read it. - % Useful for site-wide @afourpaper, etc. - \openin 1 texinfo.cnf - \ifeof 1 \else \input texinfo.cnf \fi - \closein 1 - % - \comment % Ignore the actual filename. -} - -% Called from \setfilename. -% -\def\openindices{% - \newindex{cp}% - \newcodeindex{fn}% - \newcodeindex{vr}% - \newcodeindex{tp}% - \newcodeindex{ky}% - \newcodeindex{pg}% -} - -% @bye. -\outer\def\bye{\pagealignmacro\tracingstats=1\ptexend} - - -\message{pdf,} -% adobe `portable' document format -\newcount\tempnum -\newcount\lnkcount -\newtoks\filename -\newcount\filenamelength -\newcount\pgn -\newtoks\toksA -\newtoks\toksB -\newtoks\toksC -\newtoks\toksD -\newbox\boxA -\newcount\countA -\newif\ifpdf -\newif\ifpdfmakepagedest - -% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1 -% can be set). So we test for \relax and 0 as well as \undefined, -% borrowed from ifpdf.sty. -\ifx\pdfoutput\undefined -\else - \ifx\pdfoutput\relax - \else - \ifcase\pdfoutput - \else - \pdftrue - \fi - \fi -\fi - -% PDF uses PostScript string constants for the names of xref targets, -% for display in the outlines, and in other places. Thus, we have to -% double any backslashes. Otherwise, a name like "\node" will be -% interpreted as a newline (\n), followed by o, d, e. Not good. -% http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html -% (and related messages, the final outcome is that it is up to the TeX -% user to double the backslashes and otherwise make the string valid, so -% that's what we do). - -% double active backslashes. -% -{\catcode`\@=0 \catcode`\\=\active - @gdef@activebackslashdouble{% - @catcode`@\=@active - @let\=@doublebackslash} -} - -% To handle parens, we must adopt a different approach, since parens are -% not active characters. hyperref.dtx (which has the same problem as -% us) handles it with this amazing macro to replace tokens. I've -% tinkered with it a little for texinfo, but it's definitely from there. -% -% #1 is the tokens to replace. -% #2 is the replacement. -% #3 is the control sequence with the string. -% -\def\HyPsdSubst#1#2#3{% - \def\HyPsdReplace##1#1##2\END{% - ##1% - \ifx\\##2\\% - \else - #2% - \HyReturnAfterFi{% - \HyPsdReplace##2\END - }% - \fi - }% - \xdef#3{\expandafter\HyPsdReplace#3#1\END}% -} -\long\def\HyReturnAfterFi#1\fi{\fi#1} - -% #1 is a control sequence in which to do the replacements. -\def\backslashparens#1{% - \xdef#1{#1}% redefine it as its expansion; the definition is simply - % \lastnode when called from \setref -> \pdfmkdest. - \HyPsdSubst{(}{\realbackslash(}{#1}% - \HyPsdSubst{)}{\realbackslash)}{#1}% -} - -\ifpdf - \input pdfcolor - \pdfcatalog{/PageMode /UseOutlines}% - % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto). - \def\dopdfimage#1#2#3{% - \def\imagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}% - \def\imageheight{#3}\setbox2 = \hbox{\ignorespaces #3}% - % without \immediate, pdftex seg faults when the same image is - % included twice. (Version 3.14159-pre-1.0-unofficial-20010704.) - \ifnum\pdftexversion < 14 - \immediate\pdfimage - \else - \immediate\pdfximage - \fi - \ifdim \wd0 >0pt width \imagewidth \fi - \ifdim \wd2 >0pt height \imageheight \fi - \ifnum\pdftexversion<13 - #1.pdf% - \else - {#1.pdf}% - \fi - \ifnum\pdftexversion < 14 \else - \pdfrefximage \pdflastximage - \fi} - \def\pdfmkdest#1{{% - % We have to set dummies so commands such as @code, and characters - % such as \, aren't expanded when present in a section title. - \atdummies - \activebackslashdouble - \def\pdfdestname{#1}% - \backslashparens\pdfdestname - \pdfdest name{\pdfdestname} xyz% - }}% - % - % used to mark target names; must be expandable. - \def\pdfmkpgn#1{#1}% - % - \let\linkcolor = \Blue % was Cyan, but that seems light? - \def\endlink{\Black\pdfendlink} - % Adding outlines to PDF; macros for calculating structure of outlines - % come from Petr Olsak - \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0% - \else \csname#1\endcsname \fi} - \def\advancenumber#1{\tempnum=\expnumber{#1}\relax - \advance\tempnum by 1 - \expandafter\xdef\csname#1\endcsname{\the\tempnum}} - % - % #1 is the section text, which is what will be displayed in the - % outline by the pdf viewer. #2 is the pdf expression for the number - % of subentries (or empty, for subsubsections). #3 is the node text, - % which might be empty if this toc entry had no corresponding node. - % #4 is the page number - % - \def\dopdfoutline#1#2#3#4{% - % Generate a link to the node text if that exists; else, use the - % page number. We could generate a destination for the section - % text in the case where a section has no node, but it doesn't - % seem worth the trouble, since most documents are normally structured. - \def\pdfoutlinedest{#3}% - \ifx\pdfoutlinedest\empty - \def\pdfoutlinedest{#4}% - \else - % Doubled backslashes in the name. - {\activebackslashdouble \xdef\pdfoutlinedest{#3}% - \backslashparens\pdfoutlinedest}% - \fi - % - % Also double the backslashes in the display string. - {\activebackslashdouble \xdef\pdfoutlinetext{#1}% - \backslashparens\pdfoutlinetext}% - % - \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{\pdfoutlinetext}% - } - % - \def\pdfmakeoutlines{% - \begingroup - % Thanh's hack / proper braces in bookmarks - \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace - \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace - % - % Read toc silently, to get counts of subentries for \pdfoutline. - \def\numchapentry##1##2##3##4{% - \def\thischapnum{##2}% - \def\thissecnum{0}% - \def\thissubsecnum{0}% - }% - \def\numsecentry##1##2##3##4{% - \advancenumber{chap\thischapnum}% - \def\thissecnum{##2}% - \def\thissubsecnum{0}% - }% - \def\numsubsecentry##1##2##3##4{% - \advancenumber{sec\thissecnum}% - \def\thissubsecnum{##2}% - }% - \def\numsubsubsecentry##1##2##3##4{% - \advancenumber{subsec\thissubsecnum}% - }% - \def\thischapnum{0}% - \def\thissecnum{0}% - \def\thissubsecnum{0}% - % - % use \def rather than \let here because we redefine \chapentry et - % al. a second time, below. - \def\appentry{\numchapentry}% - \def\appsecentry{\numsecentry}% - \def\appsubsecentry{\numsubsecentry}% - \def\appsubsubsecentry{\numsubsubsecentry}% - \def\unnchapentry{\numchapentry}% - \def\unnsecentry{\numsecentry}% - \def\unnsubsecentry{\numsubsecentry}% - \def\unnsubsubsecentry{\numsubsubsecentry}% - \readdatafile{toc}% - % - % Read toc second time, this time actually producing the outlines. - % The `-' means take the \expnumber as the absolute number of - % subentries, which we calculated on our first read of the .toc above. - % - % We use the node names as the destinations. - \def\numchapentry##1##2##3##4{% - \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}% - \def\numsecentry##1##2##3##4{% - \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}% - \def\numsubsecentry##1##2##3##4{% - \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}% - \def\numsubsubsecentry##1##2##3##4{% count is always zero - \dopdfoutline{##1}{}{##3}{##4}}% - % - % PDF outlines are displayed using system fonts, instead of - % document fonts. Therefore we cannot use special characters, - % since the encoding is unknown. For example, the eogonek from - % Latin 2 (0xea) gets translated to a | character. Info from - % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100. - % - % xx to do this right, we have to translate 8-bit characters to - % their "best" equivalent, based on the @documentencoding. Right - % now, I guess we'll just let the pdf reader have its way. - \indexnofonts - \setupdatafile - \catcode`\\=\active \otherbackslash - \input \jobname.toc - \endgroup - } - % - \def\skipspaces#1{\def\PP{#1}\def\D{|}% - \ifx\PP\D\let\nextsp\relax - \else\let\nextsp\skipspaces - \ifx\p\space\else\addtokens{\filename}{\PP}% - \advance\filenamelength by 1 - \fi - \fi - \nextsp} - \def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax} - \ifnum\pdftexversion < 14 - \let \startlink \pdfannotlink - \else - \let \startlink \pdfstartlink - \fi - % make a live url in pdf output. - \def\pdfurl#1{% - \begingroup - % it seems we really need yet another set of dummies; have not - % tried to figure out what each command should do in the context - % of @url. for now, just make @/ a no-op, that's the only one - % people have actually reported a problem with. - % - \normalturnoffactive - \def\@{@}% - \let\/=\empty - \makevalueexpandable - \leavevmode\Red - \startlink attr{/Border [0 0 0]}% - user{/Subtype /Link /A << /S /URI /URI (#1) >>}% - \endgroup} - \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}} - \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks} - \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks} - \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}} - \def\maketoks{% - \expandafter\poptoks\the\toksA|ENDTOKS|\relax - \ifx\first0\adn0 - \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3 - \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6 - \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9 - \else - \ifnum0=\countA\else\makelink\fi - \ifx\first.\let\next=\done\else - \let\next=\maketoks - \addtokens{\toksB}{\the\toksD} - \ifx\first,\addtokens{\toksB}{\space}\fi - \fi - \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi - \next} - \def\makelink{\addtokens{\toksB}% - {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0} - \def\pdflink#1{% - \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}} - \linkcolor #1\endlink} - \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st} -\else - \let\pdfmkdest = \gobble - \let\pdfurl = \gobble - \let\endlink = \relax - \let\linkcolor = \relax - \let\pdfmakeoutlines = \relax -\fi % \ifx\pdfoutput - - -\message{fonts,} - -% Change the current font style to #1, remembering it in \curfontstyle. -% For now, we do not accumulate font styles: @b{@i{foo}} prints foo in -% italics, not bold italics. -% -\def\setfontstyle#1{% - \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd. - \csname ten#1\endcsname % change the current font -} - -% Select #1 fonts with the current style. -% -\def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname} - -\def\rm{\fam=0 \setfontstyle{rm}} -\def\it{\fam=\itfam \setfontstyle{it}} -\def\sl{\fam=\slfam \setfontstyle{sl}} -\def\bf{\fam=\bffam \setfontstyle{bf}}\def\bfstylename{bf} -\def\tt{\fam=\ttfam \setfontstyle{tt}} - -% Texinfo sort of supports the sans serif font style, which plain TeX does not. -% So we set up a \sf. -\newfam\sffam -\def\sf{\fam=\sffam \setfontstyle{sf}} -\let\li = \sf % Sometimes we call it \li, not \sf. - -% We don't need math for this font style. -\def\ttsl{\setfontstyle{ttsl}} - - -% Default leading. -\newdimen\textleading \textleading = 13.2pt - -% Set the baselineskip to #1, and the lineskip and strut size -% correspondingly. There is no deep meaning behind these magic numbers -% used as factors; they just match (closely enough) what Knuth defined. -% -\def\lineskipfactor{.08333} -\def\strutheightpercent{.70833} -\def\strutdepthpercent {.29167} -% -\def\setleading#1{% - \normalbaselineskip = #1\relax - \normallineskip = \lineskipfactor\normalbaselineskip - \normalbaselines - \setbox\strutbox =\hbox{% - \vrule width0pt height\strutheightpercent\baselineskip - depth \strutdepthpercent \baselineskip - }% -} - - -% Set the font macro #1 to the font named #2, adding on the -% specified font prefix (normally `cm'). -% #3 is the font's design size, #4 is a scale factor -\def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4} - - -% Use cm as the default font prefix. -% To specify the font prefix, you must define \fontprefix -% before you read in texinfo.tex. -\ifx\fontprefix\undefined -\def\fontprefix{cm} -\fi -% Support font families that don't use the same naming scheme as CM. -\def\rmshape{r} -\def\rmbshape{bx} %where the normal face is bold -\def\bfshape{b} -\def\bxshape{bx} -\def\ttshape{tt} -\def\ttbshape{tt} -\def\ttslshape{sltt} -\def\itshape{ti} -\def\itbshape{bxti} -\def\slshape{sl} -\def\slbshape{bxsl} -\def\sfshape{ss} -\def\sfbshape{ss} -\def\scshape{csc} -\def\scbshape{csc} - -% Definitions for a main text size of 11pt. This is the default in -% Texinfo. -% -\def\definetextfontsizexi{ -% Text fonts (11.2pt, magstep1). -\def\textnominalsize{11pt} -\edef\mainmagstep{\magstephalf} -\setfont\textrm\rmshape{10}{\mainmagstep} -\setfont\texttt\ttshape{10}{\mainmagstep} -\setfont\textbf\bfshape{10}{\mainmagstep} -\setfont\textit\itshape{10}{\mainmagstep} -\setfont\textsl\slshape{10}{\mainmagstep} -\setfont\textsf\sfshape{10}{\mainmagstep} -\setfont\textsc\scshape{10}{\mainmagstep} -\setfont\textttsl\ttslshape{10}{\mainmagstep} -\font\texti=cmmi10 scaled \mainmagstep -\font\textsy=cmsy10 scaled \mainmagstep - -% A few fonts for @defun names and args. -\setfont\defbf\bfshape{10}{\magstep1} -\setfont\deftt\ttshape{10}{\magstep1} -\setfont\defttsl\ttslshape{10}{\magstep1} -\def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf} - -% Fonts for indices, footnotes, small examples (9pt). -\def\smallnominalsize{9pt} -\setfont\smallrm\rmshape{9}{1000} -\setfont\smalltt\ttshape{9}{1000} -\setfont\smallbf\bfshape{10}{900} -\setfont\smallit\itshape{9}{1000} -\setfont\smallsl\slshape{9}{1000} -\setfont\smallsf\sfshape{9}{1000} -\setfont\smallsc\scshape{10}{900} -\setfont\smallttsl\ttslshape{10}{900} -\font\smalli=cmmi9 -\font\smallsy=cmsy9 - -% Fonts for small examples (8pt). -\def\smallernominalsize{8pt} -\setfont\smallerrm\rmshape{8}{1000} -\setfont\smallertt\ttshape{8}{1000} -\setfont\smallerbf\bfshape{10}{800} -\setfont\smallerit\itshape{8}{1000} -\setfont\smallersl\slshape{8}{1000} -\setfont\smallersf\sfshape{8}{1000} -\setfont\smallersc\scshape{10}{800} -\setfont\smallerttsl\ttslshape{10}{800} -\font\smalleri=cmmi8 -\font\smallersy=cmsy8 - -% Fonts for title page (20.4pt): -\def\titlenominalsize{20pt} -\setfont\titlerm\rmbshape{12}{\magstep3} -\setfont\titleit\itbshape{10}{\magstep4} -\setfont\titlesl\slbshape{10}{\magstep4} -\setfont\titlett\ttbshape{12}{\magstep3} -\setfont\titlettsl\ttslshape{10}{\magstep4} -\setfont\titlesf\sfbshape{17}{\magstep1} -\let\titlebf=\titlerm -\setfont\titlesc\scbshape{10}{\magstep4} -\font\titlei=cmmi12 scaled \magstep3 -\font\titlesy=cmsy10 scaled \magstep4 -\def\authorrm{\secrm} -\def\authortt{\sectt} - -% Chapter (and unnumbered) fonts (17.28pt). -\def\chapnominalsize{17pt} -\setfont\chaprm\rmbshape{12}{\magstep2} -\setfont\chapit\itbshape{10}{\magstep3} -\setfont\chapsl\slbshape{10}{\magstep3} -\setfont\chaptt\ttbshape{12}{\magstep2} -\setfont\chapttsl\ttslshape{10}{\magstep3} -\setfont\chapsf\sfbshape{17}{1000} -\let\chapbf=\chaprm -\setfont\chapsc\scbshape{10}{\magstep3} -\font\chapi=cmmi12 scaled \magstep2 -\font\chapsy=cmsy10 scaled \magstep3 - -% Section fonts (14.4pt). -\def\secnominalsize{14pt} -\setfont\secrm\rmbshape{12}{\magstep1} -\setfont\secit\itbshape{10}{\magstep2} -\setfont\secsl\slbshape{10}{\magstep2} -\setfont\sectt\ttbshape{12}{\magstep1} -\setfont\secttsl\ttslshape{10}{\magstep2} -\setfont\secsf\sfbshape{12}{\magstep1} -\let\secbf\secrm -\setfont\secsc\scbshape{10}{\magstep2} -\font\seci=cmmi12 scaled \magstep1 -\font\secsy=cmsy10 scaled \magstep2 - -% Subsection fonts (13.15pt). -\def\ssecnominalsize{13pt} -\setfont\ssecrm\rmbshape{12}{\magstephalf} -\setfont\ssecit\itbshape{10}{1315} -\setfont\ssecsl\slbshape{10}{1315} -\setfont\ssectt\ttbshape{12}{\magstephalf} -\setfont\ssecttsl\ttslshape{10}{1315} -\setfont\ssecsf\sfbshape{12}{\magstephalf} -\let\ssecbf\ssecrm -\setfont\ssecsc\scbshape{10}{1315} -\font\sseci=cmmi12 scaled \magstephalf -\font\ssecsy=cmsy10 scaled 1315 - -% Reduced fonts for @acro in text (10pt). -\def\reducednominalsize{10pt} -\setfont\reducedrm\rmshape{10}{1000} -\setfont\reducedtt\ttshape{10}{1000} -\setfont\reducedbf\bfshape{10}{1000} -\setfont\reducedit\itshape{10}{1000} -\setfont\reducedsl\slshape{10}{1000} -\setfont\reducedsf\sfshape{10}{1000} -\setfont\reducedsc\scshape{10}{1000} -\setfont\reducedttsl\ttslshape{10}{1000} -\font\reducedi=cmmi10 -\font\reducedsy=cmsy10 - -% reset the current fonts -\textfonts -\rm -} % end of 11pt text font size definitions - - -% Definitions to make the main text be 10pt Computer Modern, with -% section, chapter, etc., sizes following suit. This is for the GNU -% Press printing of the Emacs 22 manual. Maybe other manuals in the -% future. Used with @smallbook, which sets the leading to 12pt. -% -\def\definetextfontsizex{% -% Text fonts (10pt). -\def\textnominalsize{10pt} -\edef\mainmagstep{1000} -\setfont\textrm\rmshape{10}{\mainmagstep} -\setfont\texttt\ttshape{10}{\mainmagstep} -\setfont\textbf\bfshape{10}{\mainmagstep} -\setfont\textit\itshape{10}{\mainmagstep} -\setfont\textsl\slshape{10}{\mainmagstep} -\setfont\textsf\sfshape{10}{\mainmagstep} -\setfont\textsc\scshape{10}{\mainmagstep} -\setfont\textttsl\ttslshape{10}{\mainmagstep} -\font\texti=cmmi10 scaled \mainmagstep -\font\textsy=cmsy10 scaled \mainmagstep - -% A few fonts for @defun names and args. -\setfont\defbf\bfshape{10}{\magstephalf} -\setfont\deftt\ttshape{10}{\magstephalf} -\setfont\defttsl\ttslshape{10}{\magstephalf} -\def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf} - -% Fonts for indices, footnotes, small examples (9pt). -\def\smallnominalsize{9pt} -\setfont\smallrm\rmshape{9}{1000} -\setfont\smalltt\ttshape{9}{1000} -\setfont\smallbf\bfshape{10}{900} -\setfont\smallit\itshape{9}{1000} -\setfont\smallsl\slshape{9}{1000} -\setfont\smallsf\sfshape{9}{1000} -\setfont\smallsc\scshape{10}{900} -\setfont\smallttsl\ttslshape{10}{900} -\font\smalli=cmmi9 -\font\smallsy=cmsy9 - -% Fonts for small examples (8pt). -\def\smallernominalsize{8pt} -\setfont\smallerrm\rmshape{8}{1000} -\setfont\smallertt\ttshape{8}{1000} -\setfont\smallerbf\bfshape{10}{800} -\setfont\smallerit\itshape{8}{1000} -\setfont\smallersl\slshape{8}{1000} -\setfont\smallersf\sfshape{8}{1000} -\setfont\smallersc\scshape{10}{800} -\setfont\smallerttsl\ttslshape{10}{800} -\font\smalleri=cmmi8 -\font\smallersy=cmsy8 - -% Fonts for title page (20.4pt): -\def\titlenominalsize{20pt} -\setfont\titlerm\rmbshape{12}{\magstep3} -\setfont\titleit\itbshape{10}{\magstep4} -\setfont\titlesl\slbshape{10}{\magstep4} -\setfont\titlett\ttbshape{12}{\magstep3} -\setfont\titlettsl\ttslshape{10}{\magstep4} -\setfont\titlesf\sfbshape{17}{\magstep1} -\let\titlebf=\titlerm -\setfont\titlesc\scbshape{10}{\magstep4} -\font\titlei=cmmi12 scaled \magstep3 -\font\titlesy=cmsy10 scaled \magstep4 -\def\authorrm{\secrm} -\def\authortt{\sectt} - -% Chapter fonts (14.4pt). -\def\chapnominalsize{14pt} -\setfont\chaprm\rmbshape{12}{\magstep1} -\setfont\chapit\itbshape{10}{\magstep2} -\setfont\chapsl\slbshape{10}{\magstep2} -\setfont\chaptt\ttbshape{12}{\magstep1} -\setfont\chapttsl\ttslshape{10}{\magstep2} -\setfont\chapsf\sfbshape{12}{\magstep1} -\let\chapbf\chaprm -\setfont\chapsc\scbshape{10}{\magstep2} -\font\chapi=cmmi12 scaled \magstep1 -\font\chapsy=cmsy10 scaled \magstep2 - -% Section fonts (12pt). -\def\secnominalsize{12pt} -\setfont\secrm\rmbshape{12}{1000} -\setfont\secit\itbshape{10}{\magstep1} -\setfont\secsl\slbshape{10}{\magstep1} -\setfont\sectt\ttbshape{12}{1000} -\setfont\secttsl\ttslshape{10}{\magstep1} -\setfont\secsf\sfbshape{12}{1000} -\let\secbf\secrm -\setfont\secsc\scbshape{10}{\magstep1} -\font\seci=cmmi12 -\font\secsy=cmsy10 scaled \magstep1 - -% Subsection fonts (10pt). -\def\ssecnominalsize{10pt} -\setfont\ssecrm\rmbshape{10}{1000} -\setfont\ssecit\itbshape{10}{1000} -\setfont\ssecsl\slbshape{10}{1000} -\setfont\ssectt\ttbshape{10}{1000} -\setfont\ssecttsl\ttslshape{10}{1000} -\setfont\ssecsf\sfbshape{10}{1000} -\let\ssecbf\ssecrm -\setfont\ssecsc\scbshape{10}{1000} -\font\sseci=cmmi10 -\font\ssecsy=cmsy10 - -% Reduced fonts for @acro in text (9pt). -\def\reducednominalsize{9pt} -\setfont\reducedrm\rmshape{9}{1000} -\setfont\reducedtt\ttshape{9}{1000} -\setfont\reducedbf\bfshape{10}{900} -\setfont\reducedit\itshape{9}{1000} -\setfont\reducedsl\slshape{9}{1000} -\setfont\reducedsf\sfshape{9}{1000} -\setfont\reducedsc\scshape{10}{900} -\setfont\reducedttsl\ttslshape{10}{900} -\font\reducedi=cmmi9 -\font\reducedsy=cmsy9 - -% reduce space between paragraphs -\divide\parskip by 2 - -% reset the current fonts -\textfonts -\rm -} % end of 10pt text font size definitions - - -% We provide the user-level command -% @fonttextsize 10 -% (or 11) to redefine the text font size. pt is assumed. -% -\def\xword{10} -\def\xiword{11} -% -\parseargdef\fonttextsize{% - \def\textsizearg{#1}% - \wlog{doing @fonttextsize \textsizearg}% - % - % Set \globaldefs so that documents can use this inside @tex, since - % makeinfo 4.8 does not support it, but we need it nonetheless. - % - \begingroup \globaldefs=1 - \ifx\textsizearg\xword \definetextfontsizex - \else \ifx\textsizearg\xiword \definetextfontsizexi - \else - \errhelp=\EMsimple - \errmessage{@fonttextsize only supports `10' or `11', not `\textsizearg'} - \fi\fi - \endgroup -} - - -% In order for the font changes to affect most math symbols and letters, -% we have to define the \textfont of the standard families. Since -% texinfo doesn't allow for producing subscripts and superscripts except -% in the main text, we don't bother to reset \scriptfont and -% \scriptscriptfont (which would also require loading a lot more fonts). -% -\def\resetmathfonts{% - \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy - \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf - \textfont\ttfam=\tentt \textfont\sffam=\tensf -} - -% The font-changing commands redefine the meanings of \tenSTYLE, instead -% of just \STYLE. We do this because \STYLE needs to also set the -% current \fam for math mode. Our \STYLE (e.g., \rm) commands hardwire -% \tenSTYLE to set the current font. -% -% Each font-changing command also sets the names \lsize (one size lower) -% and \lllsize (three sizes lower). These relative commands are used in -% the LaTeX logo and acronyms. -% -% This all needs generalizing, badly. -% -\def\textfonts{% - \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl - \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc - \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy - \let\tenttsl=\textttsl - \def\curfontsize{text}% - \def\lsize{reduced}\def\lllsize{smaller}% - \resetmathfonts \setleading{\textleading}} -\def\titlefonts{% - \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl - \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc - \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy - \let\tenttsl=\titlettsl - \def\curfontsize{title}% - \def\lsize{chap}\def\lllsize{subsec}% - \resetmathfonts \setleading{25pt}} -\def\titlefont#1{{\titlefonts\rm #1}} -\def\chapfonts{% - \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl - \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc - \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy - \let\tenttsl=\chapttsl - \def\curfontsize{chap}% - \def\lsize{sec}\def\lllsize{text}% - \resetmathfonts \setleading{19pt}} -\def\secfonts{% - \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl - \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc - \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy - \let\tenttsl=\secttsl - \def\curfontsize{sec}% - \def\lsize{subsec}\def\lllsize{reduced}% - \resetmathfonts \setleading{16pt}} -\def\subsecfonts{% - \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl - \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc - \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy - \let\tenttsl=\ssecttsl - \def\curfontsize{ssec}% - \def\lsize{text}\def\lllsize{small}% - \resetmathfonts \setleading{15pt}} -\let\subsubsecfonts = \subsecfonts -\def\reducedfonts{% - \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl - \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc - \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy - \let\tenttsl=\reducedttsl - \def\curfontsize{reduced}% - \def\lsize{small}\def\lllsize{smaller}% - \resetmathfonts \setleading{10.5pt}} -\def\smallfonts{% - \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl - \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc - \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy - \let\tenttsl=\smallttsl - \def\curfontsize{small}% - \def\lsize{smaller}\def\lllsize{smaller}% - \resetmathfonts \setleading{10.5pt}} -\def\smallerfonts{% - \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl - \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc - \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy - \let\tenttsl=\smallerttsl - \def\curfontsize{smaller}% - \def\lsize{smaller}\def\lllsize{smaller}% - \resetmathfonts \setleading{9.5pt}} - -% Set the fonts to use with the @small... environments. -\let\smallexamplefonts = \smallfonts - -% About \smallexamplefonts. If we use \smallfonts (9pt), @smallexample -% can fit this many characters: -% 8.5x11=86 smallbook=72 a4=90 a5=69 -% If we use \scriptfonts (8pt), then we can fit this many characters: -% 8.5x11=90+ smallbook=80 a4=90+ a5=77 -% For me, subjectively, the few extra characters that fit aren't worth -% the additional smallness of 8pt. So I'm making the default 9pt. -% -% By the way, for comparison, here's what fits with @example (10pt): -% 8.5x11=71 smallbook=60 a4=75 a5=58 -% -% I wish the USA used A4 paper. -% --karl, 24jan03. - - -% Set up the default fonts, so we can use them for creating boxes. -% -\definetextfontsizexi - -% Define these so they can be easily changed for other fonts. -\def\angleleft{$\langle$} -\def\angleright{$\rangle$} - -% Count depth in font-changes, for error checks -\newcount\fontdepth \fontdepth=0 - -% Fonts for short table of contents. -\setfont\shortcontrm\rmshape{12}{1000} -\setfont\shortcontbf\bfshape{10}{\magstep1} % no cmb12 -\setfont\shortcontsl\slshape{12}{1000} -\setfont\shortconttt\ttshape{12}{1000} - -%% Add scribe-like font environments, plus @l for inline lisp (usually sans -%% serif) and @ii for TeX italic - -% \smartitalic{ARG} outputs arg in italics, followed by an italic correction -% unless the following character is such as not to need one. -\def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else - \ptexslash\fi\fi\fi} -\def\smartslanted#1{{\ifusingtt\ttsl\sl #1}\futurelet\next\smartitalicx} -\def\smartitalic#1{{\ifusingtt\ttsl\it #1}\futurelet\next\smartitalicx} - -% like \smartslanted except unconditionally uses \ttsl. -% @var is set to this for defun arguments. -\def\ttslanted#1{{\ttsl #1}\futurelet\next\smartitalicx} - -% like \smartslanted except unconditionally use \sl. We never want -% ttsl for book titles, do we? -\def\cite#1{{\sl #1}\futurelet\next\smartitalicx} - -\let\i=\smartitalic -\let\slanted=\smartslanted -\let\var=\smartslanted -\let\dfn=\smartslanted -\let\emph=\smartitalic - -% @b, explicit bold. -\def\b#1{{\bf #1}} -\let\strong=\b - -% @sansserif, explicit sans. -\def\sansserif#1{{\sf #1}} - -% We can't just use \exhyphenpenalty, because that only has effect at -% the end of a paragraph. Restore normal hyphenation at the end of the -% group within which \nohyphenation is presumably called. -% -\def\nohyphenation{\hyphenchar\font = -1 \aftergroup\restorehyphenation} -\def\restorehyphenation{\hyphenchar\font = `- } - -% Set sfcode to normal for the chars that usually have another value. -% Can't use plain's \frenchspacing because it uses the `\x notation, and -% sometimes \x has an active definition that messes things up. -% -\catcode`@=11 - \def\plainfrenchspacing{% - \sfcode\dotChar =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m - \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m - \def\endofsentencespacefactor{1000}% for @. and friends - } - \def\plainnonfrenchspacing{% - \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000 - \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250 - \def\endofsentencespacefactor{3000}% for @. and friends - } -\catcode`@=\other -\def\endofsentencespacefactor{3000}% default - -\def\t#1{% - {\tt \rawbackslash \plainfrenchspacing #1}% - \null -} -\def\samp#1{`\tclose{#1}'\null} -\setfont\keyrm\rmshape{8}{1000} -\font\keysy=cmsy9 -\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{% - \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{% - \vbox{\hrule\kern-0.4pt - \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}% - \kern-0.4pt\hrule}% - \kern-.06em\raise0.4pt\hbox{\angleright}}}} -% The old definition, with no lozenge: -%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null} -\def\ctrl #1{{\tt \rawbackslash \hat}#1} - -% @file, @option are the same as @samp. -\let\file=\samp -\let\option=\samp - -% @code is a modification of @t, -% which makes spaces the same size as normal in the surrounding text. -\def\tclose#1{% - {% - % Change normal interword space to be same as for the current font. - \spaceskip = \fontdimen2\font - % - % Switch to typewriter. - \tt - % - % But `\ ' produces the large typewriter interword space. - \def\ {{\spaceskip = 0pt{} }}% - % - % Turn off hyphenation. - \nohyphenation - % - \rawbackslash - \plainfrenchspacing - #1% - }% - \null -} - -% We *must* turn on hyphenation at `-' and `_' in @code. -% Otherwise, it is too hard to avoid overfull hboxes -% in the Emacs manual, the Library manual, etc. - -% Unfortunately, TeX uses one parameter (\hyphenchar) to control -% both hyphenation at - and hyphenation within words. -% We must therefore turn them both off (\tclose does that) -% and arrange explicitly to hyphenate at a dash. -% -- rms. -{ - \catcode`\-=\active \catcode`\_=\active - \catcode`\'=\active \catcode`\`=\active - % - \global\def\code{\begingroup - \catcode\rquoteChar=\active \catcode\lquoteChar=\active - \let'\codequoteright \let`\codequoteleft - % - \catcode\dashChar=\active \catcode\underChar=\active - \ifallowcodebreaks - \let-\codedash - \let_\codeunder - \else - \let-\realdash - \let_\realunder - \fi - \codex - } -} - -\def\realdash{-} -\def\codedash{-\discretionary{}{}{}} -\def\codeunder{% - % this is all so @math{@code{var_name}+1} can work. In math mode, _ - % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.) - % will therefore expand the active definition of _, which is us - % (inside @code that is), therefore an endless loop. - \ifusingtt{\ifmmode - \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_. - \else\normalunderscore \fi - \discretionary{}{}{}}% - {\_}% -} -\def\codex #1{\tclose{#1}\endgroup} - -% An additional complication: the above will allow breaks after, e.g., -% each of the four underscores in __typeof__. This is undesirable in -% some manuals, especially if they don't have long identifiers in -% general. @allowcodebreaks provides a way to control this. -% -\newif\ifallowcodebreaks \allowcodebreakstrue - -\def\keywordtrue{true} -\def\keywordfalse{false} - -\parseargdef\allowcodebreaks{% - \def\txiarg{#1}% - \ifx\txiarg\keywordtrue - \allowcodebreakstrue - \else\ifx\txiarg\keywordfalse - \allowcodebreaksfalse - \else - \errhelp = \EMsimple - \errmessage{Unknown @allowcodebreaks option `\txiarg'}% - \fi\fi -} - -% @kbd is like @code, except that if the argument is just one @key command, -% then @kbd has no effect. - -% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always), -% `example' (@kbd uses ttsl only inside of @example and friends), -% or `code' (@kbd uses normal tty font always). -\parseargdef\kbdinputstyle{% - \def\txiarg{#1}% - \ifx\txiarg\worddistinct - \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}% - \else\ifx\txiarg\wordexample - \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}% - \else\ifx\txiarg\wordcode - \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}% - \else - \errhelp = \EMsimple - \errmessage{Unknown @kbdinputstyle option `\txiarg'}% - \fi\fi\fi -} -\def\worddistinct{distinct} -\def\wordexample{example} -\def\wordcode{code} - -% Default is `distinct.' -\kbdinputstyle distinct - -\def\xkey{\key} -\def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}% -\ifx\one\xkey\ifx\threex\three \key{#2}% -\else{\tclose{\kbdfont\look}}\fi -\else{\tclose{\kbdfont\look}}\fi} - -% For @indicateurl, @env, @command quotes seem unnecessary, so use \code. -\let\indicateurl=\code -\let\env=\code -\let\command=\code - -% @uref (abbreviation for `urlref') takes an optional (comma-separated) -% second argument specifying the text to display and an optional third -% arg as text to display instead of (rather than in addition to) the url -% itself. First (mandatory) arg is the url. Perhaps eventually put in -% a hypertex \special here. -% -\def\uref#1{\douref #1,,,\finish} -\def\douref#1,#2,#3,#4\finish{\begingroup - \unsepspaces - \pdfurl{#1}% - \setbox0 = \hbox{\ignorespaces #3}% - \ifdim\wd0 > 0pt - \unhbox0 % third arg given, show only that - \else - \setbox0 = \hbox{\ignorespaces #2}% - \ifdim\wd0 > 0pt - \ifpdf - \unhbox0 % PDF: 2nd arg given, show only it - \else - \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url - \fi - \else - \code{#1}% only url given, so show it - \fi - \fi - \endlink -\endgroup} - -% @url synonym for @uref, since that's how everyone uses it. -% -\let\url=\uref - -% rms does not like angle brackets --karl, 17may97. -% So now @email is just like @uref, unless we are pdf. -% -%\def\email#1{\angleleft{\tt #1}\angleright} -\ifpdf - \def\email#1{\doemail#1,,\finish} - \def\doemail#1,#2,#3\finish{\begingroup - \unsepspaces - \pdfurl{mailto:#1}% - \setbox0 = \hbox{\ignorespaces #2}% - \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi - \endlink - \endgroup} -\else - \let\email=\uref -\fi - -% Check if we are currently using a typewriter font. Since all the -% Computer Modern typewriter fonts have zero interword stretch (and -% shrink), and it is reasonable to expect all typewriter fonts to have -% this property, we can check that font parameter. -% -\def\ifmonospace{\ifdim\fontdimen3\font=0pt } - -% Typeset a dimension, e.g., `in' or `pt'. The only reason for the -% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt. -% -\def\dmn#1{\thinspace #1} - -\def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par} - -% @l was never documented to mean ``switch to the Lisp font'', -% and it is not used as such in any manual I can find. We need it for -% Polish suppressed-l. --karl, 22sep96. -%\def\l#1{{\li #1}\null} - -% Explicit font changes: @r, @sc, undocumented @ii. -\def\r#1{{\rm #1}} % roman font -\def\sc#1{{\smallcaps#1}} % smallcaps font -\def\ii#1{{\it #1}} % italic font - -% @acronym for "FBI", "NATO", and the like. -% We print this one point size smaller, since it's intended for -% all-uppercase. -% -\def\acronym#1{\doacronym #1,,\finish} -\def\doacronym#1,#2,#3\finish{% - {\selectfonts\lsize #1}% - \def\temp{#2}% - \ifx\temp\empty \else - \space ({\unsepspaces \ignorespaces \temp \unskip})% - \fi -} - -% @abbr for "Comput. J." and the like. -% No font change, but don't do end-of-sentence spacing. -% -\def\abbr#1{\doabbr #1,,\finish} -\def\doabbr#1,#2,#3\finish{% - {\plainfrenchspacing #1}% - \def\temp{#2}% - \ifx\temp\empty \else - \space ({\unsepspaces \ignorespaces \temp \unskip})% - \fi -} - -% @pounds{} is a sterling sign, which Knuth put in the CM italic font. -% -\def\pounds{{\it\$}} - -% @euro{} comes from a separate font, depending on the current style. -% We use the free feym* fonts from the eurosym package by Henrik -% Theiling, which support regular, slanted, bold and bold slanted (and -% "outlined" (blackboard board, sort of) versions, which we don't need). -% It is available from http://www.ctan.org/tex-archive/fonts/eurosym. -% -% Although only regular is the truly official Euro symbol, we ignore -% that. The Euro is designed to be slightly taller than the regular -% font height. -% -% feymr - regular -% feymo - slanted -% feybr - bold -% feybo - bold slanted -% -% There is no good (free) typewriter version, to my knowledge. -% A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide. -% Hmm. -% -% Also doesn't work in math. Do we need to do math with euro symbols? -% Hope not. -% -% -\def\euro{{\eurofont e}} -\def\eurofont{% - % We set the font at each command, rather than predefining it in - % \textfonts and the other font-switching commands, so that - % installations which never need the symbol don't have to have the - % font installed. - % - % There is only one designed size (nominal 10pt), so we always scale - % that to the current nominal size. - % - % By the way, simply using "at 1em" works for cmr10 and the like, but - % does not work for cmbx10 and other extended/shrunken fonts. - % - \def\eurosize{\csname\curfontsize nominalsize\endcsname}% - % - \ifx\curfontstyle\bfstylename - % bold: - \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize - \else - % regular: - \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize - \fi - \thiseurofont -} - -% @registeredsymbol - R in a circle. The font for the R should really -% be smaller yet, but lllsize is the best we can do for now. -% Adapted from the plain.tex definition of \copyright. -% -\def\registeredsymbol{% - $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}% - \hfil\crcr\Orb}}% - }$% -} - -% @textdegree - the normal degrees sign. -% -\def\textdegree{$^\circ$} - -% Laurent Siebenmann reports \Orb undefined with: -% Textures 1.7.7 (preloaded format=plain 93.10.14) (68K) 16 APR 2004 02:38 -% so we'll define it if necessary. -% -\ifx\Orb\undefined -\def\Orb{\mathhexbox20D} -\fi - - -\message{page headings,} - -\newskip\titlepagetopglue \titlepagetopglue = 1.5in -\newskip\titlepagebottomglue \titlepagebottomglue = 2pc - -% First the title page. Must do @settitle before @titlepage. -\newif\ifseenauthor -\newif\iffinishedtitlepage - -% Do an implicit @contents or @shortcontents after @end titlepage if the -% user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage. -% -\newif\ifsetcontentsaftertitlepage - \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue -\newif\ifsetshortcontentsaftertitlepage - \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue - -\parseargdef\shorttitlepage{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}% - \endgroup\page\hbox{}\page} - -\envdef\titlepage{% - % Open one extra group, as we want to close it in the middle of \Etitlepage. - \begingroup - \parindent=0pt \textfonts - % Leave some space at the very top of the page. - \vglue\titlepagetopglue - % No rule at page bottom unless we print one at the top with @title. - \finishedtitlepagetrue - % - % Most title ``pages'' are actually two pages long, with space - % at the top of the second. We don't want the ragged left on the second. - \let\oldpage = \page - \def\page{% - \iffinishedtitlepage\else - \finishtitlepage - \fi - \let\page = \oldpage - \page - \null - }% -} - -\def\Etitlepage{% - \iffinishedtitlepage\else - \finishtitlepage - \fi - % It is important to do the page break before ending the group, - % because the headline and footline are only empty inside the group. - % If we use the new definition of \page, we always get a blank page - % after the title page, which we certainly don't want. - \oldpage - \endgroup - % - % Need this before the \...aftertitlepage checks so that if they are - % in effect the toc pages will come out with page numbers. - \HEADINGSon - % - % If they want short, they certainly want long too. - \ifsetshortcontentsaftertitlepage - \shortcontents - \contents - \global\let\shortcontents = \relax - \global\let\contents = \relax - \fi - % - \ifsetcontentsaftertitlepage - \contents - \global\let\contents = \relax - \global\let\shortcontents = \relax - \fi -} - -\def\finishtitlepage{% - \vskip4pt \hrule height 2pt width \hsize - \vskip\titlepagebottomglue - \finishedtitlepagetrue -} - -%%% Macros to be used within @titlepage: - -\let\subtitlerm=\tenrm -\def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines} - -\def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines - \let\tt=\authortt} - -\parseargdef\title{% - \checkenv\titlepage - \leftline{\titlefonts\rm #1} - % print a rule at the page bottom also. - \finishedtitlepagefalse - \vskip4pt \hrule height 4pt width \hsize \vskip4pt -} - -\parseargdef\subtitle{% - \checkenv\titlepage - {\subtitlefont \rightline{#1}}% -} - -% @author should come last, but may come many times. -% It can also be used inside @quotation. -% -\parseargdef\author{% - \def\temp{\quotation}% - \ifx\thisenv\temp - \def\quotationauthor{#1}% printed in \Equotation. - \else - \checkenv\titlepage - \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi - {\authorfont \leftline{#1}}% - \fi -} - - -%%% Set up page headings and footings. - -\let\thispage=\folio - -\newtoks\evenheadline % headline on even pages -\newtoks\oddheadline % headline on odd pages -\newtoks\evenfootline % footline on even pages -\newtoks\oddfootline % footline on odd pages - -% Now make TeX use those variables -\headline={{\textfonts\rm \ifodd\pageno \the\oddheadline - \else \the\evenheadline \fi}} -\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline - \else \the\evenfootline \fi}\HEADINGShook} -\let\HEADINGShook=\relax - -% Commands to set those variables. -% For example, this is what @headings on does -% @evenheading @thistitle|@thispage|@thischapter -% @oddheading @thischapter|@thispage|@thistitle -% @evenfooting @thisfile|| -% @oddfooting ||@thisfile - - -\def\evenheading{\parsearg\evenheadingxxx} -\def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish} -\def\evenheadingyyy #1\|#2\|#3\|#4\finish{% -\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} - -\def\oddheading{\parsearg\oddheadingxxx} -\def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish} -\def\oddheadingyyy #1\|#2\|#3\|#4\finish{% -\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} - -\parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}% - -\def\evenfooting{\parsearg\evenfootingxxx} -\def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish} -\def\evenfootingyyy #1\|#2\|#3\|#4\finish{% -\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} - -\def\oddfooting{\parsearg\oddfootingxxx} -\def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish} -\def\oddfootingyyy #1\|#2\|#3\|#4\finish{% - \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}% - % - % Leave some space for the footline. Hopefully ok to assume - % @evenfooting will not be used by itself. - \global\advance\pageheight by -12pt - \global\advance\vsize by -12pt -} - -\parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}} - - -% @headings double turns headings on for double-sided printing. -% @headings single turns headings on for single-sided printing. -% @headings off turns them off. -% @headings on same as @headings double, retained for compatibility. -% @headings after turns on double-sided headings after this page. -% @headings doubleafter turns on double-sided headings after this page. -% @headings singleafter turns on single-sided headings after this page. -% By default, they are off at the start of a document, -% and turned `on' after @end titlepage. - -\def\headings #1 {\csname HEADINGS#1\endcsname} - -\def\HEADINGSoff{% -\global\evenheadline={\hfil} \global\evenfootline={\hfil} -\global\oddheadline={\hfil} \global\oddfootline={\hfil}} -\HEADINGSoff -% When we turn headings on, set the page number to 1. -% For double-sided printing, put current file name in lower left corner, -% chapter name on inside top of right hand pages, document -% title on inside top of left hand pages, and page numbers on outside top -% edge of all pages. -\def\HEADINGSdouble{% -\global\pageno=1 -\global\evenfootline={\hfil} -\global\oddfootline={\hfil} -\global\evenheadline={\line{\folio\hfil\thistitle}} -\global\oddheadline={\line{\thischapter\hfil\folio}} -\global\let\contentsalignmacro = \chapoddpage -} -\let\contentsalignmacro = \chappager - -% For single-sided printing, chapter title goes across top left of page, -% page number on top right. -\def\HEADINGSsingle{% -\global\pageno=1 -\global\evenfootline={\hfil} -\global\oddfootline={\hfil} -\global\evenheadline={\line{\thischapter\hfil\folio}} -\global\oddheadline={\line{\thischapter\hfil\folio}} -\global\let\contentsalignmacro = \chappager -} -\def\HEADINGSon{\HEADINGSdouble} - -\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex} -\let\HEADINGSdoubleafter=\HEADINGSafter -\def\HEADINGSdoublex{% -\global\evenfootline={\hfil} -\global\oddfootline={\hfil} -\global\evenheadline={\line{\folio\hfil\thistitle}} -\global\oddheadline={\line{\thischapter\hfil\folio}} -\global\let\contentsalignmacro = \chapoddpage -} - -\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex} -\def\HEADINGSsinglex{% -\global\evenfootline={\hfil} -\global\oddfootline={\hfil} -\global\evenheadline={\line{\thischapter\hfil\folio}} -\global\oddheadline={\line{\thischapter\hfil\folio}} -\global\let\contentsalignmacro = \chappager -} - -% Subroutines used in generating headings -% This produces Day Month Year style of output. -% Only define if not already defined, in case a txi-??.tex file has set -% up a different format (e.g., txi-cs.tex does this). -\ifx\today\undefined -\def\today{% - \number\day\space - \ifcase\month - \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr - \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug - \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec - \fi - \space\number\year} -\fi - -% @settitle line... specifies the title of the document, for headings. -% It generates no output of its own. -\def\thistitle{\putwordNoTitle} -\def\settitle{\parsearg{\gdef\thistitle}} - - -\message{tables,} -% Tables -- @table, @ftable, @vtable, @item(x). - -% default indentation of table text -\newdimen\tableindent \tableindent=.8in -% default indentation of @itemize and @enumerate text -\newdimen\itemindent \itemindent=.3in -% margin between end of table item and start of table text. -\newdimen\itemmargin \itemmargin=.1in - -% used internally for \itemindent minus \itemmargin -\newdimen\itemmax - -% Note @table, @ftable, and @vtable define @item, @itemx, etc., with -% these defs. -% They also define \itemindex -% to index the item name in whatever manner is desired (perhaps none). - -\newif\ifitemxneedsnegativevskip - -\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi} - -\def\internalBitem{\smallbreak \parsearg\itemzzz} -\def\internalBitemx{\itemxpar \parsearg\itemzzz} - -\def\itemzzz #1{\begingroup % - \advance\hsize by -\rightskip - \advance\hsize by -\tableindent - \setbox0=\hbox{\itemindicate{#1}}% - \itemindex{#1}% - \nobreak % This prevents a break before @itemx. - % - % If the item text does not fit in the space we have, put it on a line - % by itself, and do not allow a page break either before or after that - % line. We do not start a paragraph here because then if the next - % command is, e.g., @kindex, the whatsit would get put into the - % horizontal list on a line by itself, resulting in extra blank space. - \ifdim \wd0>\itemmax - % - % Make this a paragraph so we get the \parskip glue and wrapping, - % but leave it ragged-right. - \begingroup - \advance\leftskip by-\tableindent - \advance\hsize by\tableindent - \advance\rightskip by0pt plus1fil - \leavevmode\unhbox0\par - \endgroup - % - % We're going to be starting a paragraph, but we don't want the - % \parskip glue -- logically it's part of the @item we just started. - \nobreak \vskip-\parskip - % - % Stop a page break at the \parskip glue coming up. However, if - % what follows is an environment such as @example, there will be no - % \parskip glue; then the negative vskip we just inserted would - % cause the example and the item to crash together. So we use this - % bizarre value of 10001 as a signal to \aboveenvbreak to insert - % \parskip glue after all. Section titles are handled this way also. - % - \penalty 10001 - \endgroup - \itemxneedsnegativevskipfalse - \else - % The item text fits into the space. Start a paragraph, so that the - % following text (if any) will end up on the same line. - \noindent - % Do this with kerns and \unhbox so that if there is a footnote in - % the item text, it can migrate to the main vertical list and - % eventually be printed. - \nobreak\kern-\tableindent - \dimen0 = \itemmax \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0 - \unhbox0 - \nobreak\kern\dimen0 - \endgroup - \itemxneedsnegativevskiptrue - \fi -} - -\def\item{\errmessage{@item while not in a list environment}} -\def\itemx{\errmessage{@itemx while not in a list environment}} - -% @table, @ftable, @vtable. -\envdef\table{% - \let\itemindex\gobble - \tablecheck{table}% -} -\envdef\ftable{% - \def\itemindex ##1{\doind {fn}{\code{##1}}}% - \tablecheck{ftable}% -} -\envdef\vtable{% - \def\itemindex ##1{\doind {vr}{\code{##1}}}% - \tablecheck{vtable}% -} -\def\tablecheck#1{% - \ifnum \the\catcode`\^^M=\active - \endgroup - \errmessage{This command won't work in this context; perhaps the problem is - that we are \inenvironment\thisenv}% - \def\next{\doignore{#1}}% - \else - \let\next\tablex - \fi - \next -} -\def\tablex#1{% - \def\itemindicate{#1}% - \parsearg\tabley -} -\def\tabley#1{% - {% - \makevalueexpandable - \edef\temp{\noexpand\tablez #1\space\space\space}% - \expandafter - }\temp \endtablez -} -\def\tablez #1 #2 #3 #4\endtablez{% - \aboveenvbreak - \ifnum 0#1>0 \advance \leftskip by #1\mil \fi - \ifnum 0#2>0 \tableindent=#2\mil \fi - \ifnum 0#3>0 \advance \rightskip by #3\mil \fi - \itemmax=\tableindent - \advance \itemmax by -\itemmargin - \advance \leftskip by \tableindent - \exdentamount=\tableindent - \parindent = 0pt - \parskip = \smallskipamount - \ifdim \parskip=0pt \parskip=2pt \fi - \let\item = \internalBitem - \let\itemx = \internalBitemx -} -\def\Etable{\endgraf\afterenvbreak} -\let\Eftable\Etable -\let\Evtable\Etable -\let\Eitemize\Etable -\let\Eenumerate\Etable - -% This is the counter used by @enumerate, which is really @itemize - -\newcount \itemno - -\envdef\itemize{\parsearg\doitemize} - -\def\doitemize#1{% - \aboveenvbreak - \itemmax=\itemindent - \advance\itemmax by -\itemmargin - \advance\leftskip by \itemindent - \exdentamount=\itemindent - \parindent=0pt - \parskip=\smallskipamount - \ifdim\parskip=0pt \parskip=2pt \fi - \def\itemcontents{#1}% - % @itemize with no arg is equivalent to @itemize @bullet. - \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi - \let\item=\itemizeitem -} - -% Definition of @item while inside @itemize and @enumerate. -% -\def\itemizeitem{% - \advance\itemno by 1 % for enumerations - {\let\par=\endgraf \smallbreak}% reasonable place to break - {% - % If the document has an @itemize directly after a section title, a - % \nobreak will be last on the list, and \sectionheading will have - % done a \vskip-\parskip. In that case, we don't want to zero - % parskip, or the item text will crash with the heading. On the - % other hand, when there is normal text preceding the item (as there - % usually is), we do want to zero parskip, or there would be too much - % space. In that case, we won't have a \nobreak before. At least - % that's the theory. - \ifnum\lastpenalty<10000 \parskip=0in \fi - \noindent - \hbox to 0pt{\hss \itemcontents \kern\itemmargin}% - \vadjust{\penalty 1200}}% not good to break after first line of item. - \flushcr -} - -% \splitoff TOKENS\endmark defines \first to be the first token in -% TOKENS, and \rest to be the remainder. -% -\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}% - -% Allow an optional argument of an uppercase letter, lowercase letter, -% or number, to specify the first label in the enumerated list. No -% argument is the same as `1'. -% -\envparseargdef\enumerate{\enumeratey #1 \endenumeratey} -\def\enumeratey #1 #2\endenumeratey{% - % If we were given no argument, pretend we were given `1'. - \def\thearg{#1}% - \ifx\thearg\empty \def\thearg{1}\fi - % - % Detect if the argument is a single token. If so, it might be a - % letter. Otherwise, the only valid thing it can be is a number. - % (We will always have one token, because of the test we just made. - % This is a good thing, since \splitoff doesn't work given nothing at - % all -- the first parameter is undelimited.) - \expandafter\splitoff\thearg\endmark - \ifx\rest\empty - % Only one token in the argument. It could still be anything. - % A ``lowercase letter'' is one whose \lccode is nonzero. - % An ``uppercase letter'' is one whose \lccode is both nonzero, and - % not equal to itself. - % Otherwise, we assume it's a number. - % - % We need the \relax at the end of the \ifnum lines to stop TeX from - % continuing to look for a . - % - \ifnum\lccode\expandafter`\thearg=0\relax - \numericenumerate % a number (we hope) - \else - % It's a letter. - \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax - \lowercaseenumerate % lowercase letter - \else - \uppercaseenumerate % uppercase letter - \fi - \fi - \else - % Multiple tokens in the argument. We hope it's a number. - \numericenumerate - \fi -} - -% An @enumerate whose labels are integers. The starting integer is -% given in \thearg. -% -\def\numericenumerate{% - \itemno = \thearg - \startenumeration{\the\itemno}% -} - -% The starting (lowercase) letter is in \thearg. -\def\lowercaseenumerate{% - \itemno = \expandafter`\thearg - \startenumeration{% - % Be sure we're not beyond the end of the alphabet. - \ifnum\itemno=0 - \errmessage{No more lowercase letters in @enumerate; get a bigger - alphabet}% - \fi - \char\lccode\itemno - }% -} - -% The starting (uppercase) letter is in \thearg. -\def\uppercaseenumerate{% - \itemno = \expandafter`\thearg - \startenumeration{% - % Be sure we're not beyond the end of the alphabet. - \ifnum\itemno=0 - \errmessage{No more uppercase letters in @enumerate; get a bigger - alphabet} - \fi - \char\uccode\itemno - }% -} - -% Call \doitemize, adding a period to the first argument and supplying the -% common last two arguments. Also subtract one from the initial value in -% \itemno, since @item increments \itemno. -% -\def\startenumeration#1{% - \advance\itemno by -1 - \doitemize{#1.}\flushcr -} - -% @alphaenumerate and @capsenumerate are abbreviations for giving an arg -% to @enumerate. -% -\def\alphaenumerate{\enumerate{a}} -\def\capsenumerate{\enumerate{A}} -\def\Ealphaenumerate{\Eenumerate} -\def\Ecapsenumerate{\Eenumerate} - - -% @multitable macros -% Amy Hendrickson, 8/18/94, 3/6/96 -% -% @multitable ... @end multitable will make as many columns as desired. -% Contents of each column will wrap at width given in preamble. Width -% can be specified either with sample text given in a template line, -% or in percent of \hsize, the current width of text on page. - -% Table can continue over pages but will only break between lines. - -% To make preamble: -% -% Either define widths of columns in terms of percent of \hsize: -% @multitable @columnfractions .25 .3 .45 -% @item ... -% -% Numbers following @columnfractions are the percent of the total -% current hsize to be used for each column. You may use as many -% columns as desired. - - -% Or use a template: -% @multitable {Column 1 template} {Column 2 template} {Column 3 template} -% @item ... -% using the widest term desired in each column. - -% Each new table line starts with @item, each subsequent new column -% starts with @tab. Empty columns may be produced by supplying @tab's -% with nothing between them for as many times as empty columns are needed, -% ie, @tab@tab@tab will produce two empty columns. - -% @item, @tab do not need to be on their own lines, but it will not hurt -% if they are. - -% Sample multitable: - -% @multitable {Column 1 template} {Column 2 template} {Column 3 template} -% @item first col stuff @tab second col stuff @tab third col -% @item -% first col stuff -% @tab -% second col stuff -% @tab -% third col -% @item first col stuff @tab second col stuff -% @tab Many paragraphs of text may be used in any column. -% -% They will wrap at the width determined by the template. -% @item@tab@tab This will be in third column. -% @end multitable - -% Default dimensions may be reset by user. -% @multitableparskip is vertical space between paragraphs in table. -% @multitableparindent is paragraph indent in table. -% @multitablecolmargin is horizontal space to be left between columns. -% @multitablelinespace is space to leave between table items, baseline -% to baseline. -% 0pt means it depends on current normal line spacing. -% -\newskip\multitableparskip -\newskip\multitableparindent -\newdimen\multitablecolspace -\newskip\multitablelinespace -\multitableparskip=0pt -\multitableparindent=6pt -\multitablecolspace=12pt -\multitablelinespace=0pt - -% Macros used to set up halign preamble: -% -\let\endsetuptable\relax -\def\xendsetuptable{\endsetuptable} -\let\columnfractions\relax -\def\xcolumnfractions{\columnfractions} -\newif\ifsetpercent - -% #1 is the @columnfraction, usually a decimal number like .5, but might -% be just 1. We just use it, whatever it is. -% -\def\pickupwholefraction#1 {% - \global\advance\colcount by 1 - \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}% - \setuptable -} - -\newcount\colcount -\def\setuptable#1{% - \def\firstarg{#1}% - \ifx\firstarg\xendsetuptable - \let\go = \relax - \else - \ifx\firstarg\xcolumnfractions - \global\setpercenttrue - \else - \ifsetpercent - \let\go\pickupwholefraction - \else - \global\advance\colcount by 1 - \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a - % separator; typically that is always in the input, anyway. - \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}% - \fi - \fi - \ifx\go\pickupwholefraction - % Put the argument back for the \pickupwholefraction call, so - % we'll always have a period there to be parsed. - \def\go{\pickupwholefraction#1}% - \else - \let\go = \setuptable - \fi% - \fi - \go -} - -% multitable-only commands. -% -% @headitem starts a heading row, which we typeset in bold. -% Assignments have to be global since we are inside the implicit group -% of an alignment entry. Note that \everycr resets \everytab. -\def\headitem{\checkenv\multitable \crcr \global\everytab={\bf}\the\everytab}% -% -% A \tab used to include \hskip1sp. But then the space in a template -% line is not enough. That is bad. So let's go back to just `&' until -% we encounter the problem it was intended to solve again. -% --karl, nathan@acm.org, 20apr99. -\def\tab{\checkenv\multitable &\the\everytab}% - -% @multitable ... @end multitable definitions: -% -\newtoks\everytab % insert after every tab. -% -\envdef\multitable{% - \vskip\parskip - \startsavinginserts - % - % @item within a multitable starts a normal row. - % We use \def instead of \let so that if one of the multitable entries - % contains an @itemize, we don't choke on the \item (seen as \crcr aka - % \endtemplate) expanding \doitemize. - \def\item{\crcr}% - % - \tolerance=9500 - \hbadness=9500 - \setmultitablespacing - \parskip=\multitableparskip - \parindent=\multitableparindent - \overfullrule=0pt - \global\colcount=0 - % - \everycr = {% - \noalign{% - \global\everytab={}% - \global\colcount=0 % Reset the column counter. - % Check for saved footnotes, etc. - \checkinserts - % Keeps underfull box messages off when table breaks over pages. - %\filbreak - % Maybe so, but it also creates really weird page breaks when the - % table breaks over pages. Wouldn't \vfil be better? Wait until the - % problem manifests itself, so it can be fixed for real --karl. - }% - }% - % - \parsearg\domultitable -} -\def\domultitable#1{% - % To parse everything between @multitable and @item: - \setuptable#1 \endsetuptable - % - % This preamble sets up a generic column definition, which will - % be used as many times as user calls for columns. - % \vtop will set a single line and will also let text wrap and - % continue for many paragraphs if desired. - \halign\bgroup &% - \global\advance\colcount by 1 - \multistrut - \vtop{% - % Use the current \colcount to find the correct column width: - \hsize=\expandafter\csname col\the\colcount\endcsname - % - % In order to keep entries from bumping into each other - % we will add a \leftskip of \multitablecolspace to all columns after - % the first one. - % - % If a template has been used, we will add \multitablecolspace - % to the width of each template entry. - % - % If the user has set preamble in terms of percent of \hsize we will - % use that dimension as the width of the column, and the \leftskip - % will keep entries from bumping into each other. Table will start at - % left margin and final column will justify at right margin. - % - % Make sure we don't inherit \rightskip from the outer environment. - \rightskip=0pt - \ifnum\colcount=1 - % The first column will be indented with the surrounding text. - \advance\hsize by\leftskip - \else - \ifsetpercent \else - % If user has not set preamble in terms of percent of \hsize - % we will advance \hsize by \multitablecolspace. - \advance\hsize by \multitablecolspace - \fi - % In either case we will make \leftskip=\multitablecolspace: - \leftskip=\multitablecolspace - \fi - % Ignoring space at the beginning and end avoids an occasional spurious - % blank line, when TeX decides to break the line at the space before the - % box from the multistrut, so the strut ends up on a line by itself. - % For example: - % @multitable @columnfractions .11 .89 - % @item @code{#} - % @tab Legal holiday which is valid in major parts of the whole country. - % Is automatically provided with highlighting sequences respectively - % marking characters. - \noindent\ignorespaces##\unskip\multistrut - }\cr -} -\def\Emultitable{% - \crcr - \egroup % end the \halign - \global\setpercentfalse -} - -\def\setmultitablespacing{% - \def\multistrut{\strut}% just use the standard line spacing - % - % Compute \multitablelinespace (if not defined by user) for use in - % \multitableparskip calculation. We used define \multistrut based on - % this, but (ironically) that caused the spacing to be off. - % See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100. -\ifdim\multitablelinespace=0pt -\setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip -\global\advance\multitablelinespace by-\ht0 -\fi -%% Test to see if parskip is larger than space between lines of -%% table. If not, do nothing. -%% If so, set to same dimension as multitablelinespace. -\ifdim\multitableparskip>\multitablelinespace -\global\multitableparskip=\multitablelinespace -\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller - %% than skip between lines in the table. -\fi% -\ifdim\multitableparskip=0pt -\global\multitableparskip=\multitablelinespace -\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller - %% than skip between lines in the table. -\fi} - - -\message{conditionals,} - -% @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext, -% @ifnotxml always succeed. They currently do nothing; we don't -% attempt to check whether the conditionals are properly nested. But we -% have to remember that they are conditionals, so that @end doesn't -% attempt to close an environment group. -% -\def\makecond#1{% - \expandafter\let\csname #1\endcsname = \relax - \expandafter\let\csname iscond.#1\endcsname = 1 -} -\makecond{iftex} -\makecond{ifnotdocbook} -\makecond{ifnothtml} -\makecond{ifnotinfo} -\makecond{ifnotplaintext} -\makecond{ifnotxml} - -% Ignore @ignore, @ifhtml, @ifinfo, and the like. -% -\def\direntry{\doignore{direntry}} -\def\documentdescription{\doignore{documentdescription}} -\def\docbook{\doignore{docbook}} -\def\html{\doignore{html}} -\def\ifdocbook{\doignore{ifdocbook}} -\def\ifhtml{\doignore{ifhtml}} -\def\ifinfo{\doignore{ifinfo}} -\def\ifnottex{\doignore{ifnottex}} -\def\ifplaintext{\doignore{ifplaintext}} -\def\ifxml{\doignore{ifxml}} -\def\ignore{\doignore{ignore}} -\def\menu{\doignore{menu}} -\def\xml{\doignore{xml}} - -% Ignore text until a line `@end #1', keeping track of nested conditionals. -% -% A count to remember the depth of nesting. -\newcount\doignorecount - -\def\doignore#1{\begingroup - % Scan in ``verbatim'' mode: - \obeylines - \catcode`\@ = \other - \catcode`\{ = \other - \catcode`\} = \other - % - % Make sure that spaces turn into tokens that match what \doignoretext wants. - \spaceisspace - % - % Count number of #1's that we've seen. - \doignorecount = 0 - % - % Swallow text until we reach the matching `@end #1'. - \dodoignore{#1}% -} - -{ \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source. - \obeylines % - % - \gdef\dodoignore#1{% - % #1 contains the command name as a string, e.g., `ifinfo'. - % - % Define a command to find the next `@end #1'. - \long\def\doignoretext##1^^M@end #1{% - \doignoretextyyy##1^^M@#1\_STOP_}% - % - % And this command to find another #1 command, at the beginning of a - % line. (Otherwise, we would consider a line `@c @ifset', for - % example, to count as an @ifset for nesting.) - \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}% - % - % And now expand that command. - \doignoretext ^^M% - }% -} - -\def\doignoreyyy#1{% - \def\temp{#1}% - \ifx\temp\empty % Nothing found. - \let\next\doignoretextzzz - \else % Found a nested condition, ... - \advance\doignorecount by 1 - \let\next\doignoretextyyy % ..., look for another. - % If we're here, #1 ends with ^^M\ifinfo (for example). - \fi - \next #1% the token \_STOP_ is present just after this macro. -} - -% We have to swallow the remaining "\_STOP_". -% -\def\doignoretextzzz#1{% - \ifnum\doignorecount = 0 % We have just found the outermost @end. - \let\next\enddoignore - \else % Still inside a nested condition. - \advance\doignorecount by -1 - \let\next\doignoretext % Look for the next @end. - \fi - \next -} - -% Finish off ignored text. -{ \obeylines% - % Ignore anything after the last `@end #1'; this matters in verbatim - % environments, where otherwise the newline after an ignored conditional - % would result in a blank line in the output. - \gdef\enddoignore#1^^M{\endgroup\ignorespaces}% -} - - -% @set VAR sets the variable VAR to an empty value. -% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE. -% -% Since we want to separate VAR from REST-OF-LINE (which might be -% empty), we can't just use \parsearg; we have to insert a space of our -% own to delimit the rest of the line, and then take it out again if we -% didn't need it. -% We rely on the fact that \parsearg sets \catcode`\ =10. -% -\parseargdef\set{\setyyy#1 \endsetyyy} -\def\setyyy#1 #2\endsetyyy{% - {% - \makevalueexpandable - \def\temp{#2}% - \edef\next{\gdef\makecsname{SET#1}}% - \ifx\temp\empty - \next{}% - \else - \setzzz#2\endsetzzz - \fi - }% -} -% Remove the trailing space \setxxx inserted. -\def\setzzz#1 \endsetzzz{\next{#1}} - -% @clear VAR clears (i.e., unsets) the variable VAR. -% -\parseargdef\clear{% - {% - \makevalueexpandable - \global\expandafter\let\csname SET#1\endcsname=\relax - }% -} - -% @value{foo} gets the text saved in variable foo. -\def\value{\begingroup\makevalueexpandable\valuexxx} -\def\valuexxx#1{\expandablevalue{#1}\endgroup} -{ - \catcode`\- = \active \catcode`\_ = \active - % - \gdef\makevalueexpandable{% - \let\value = \expandablevalue - % We don't want these characters active, ... - \catcode`\-=\other \catcode`\_=\other - % ..., but we might end up with active ones in the argument if - % we're called from @code, as @code{@value{foo-bar_}}, though. - % So \let them to their normal equivalents. - \let-\realdash \let_\normalunderscore - } -} - -% We have this subroutine so that we can handle at least some @value's -% properly in indexes (we call \makevalueexpandable in \indexdummies). -% The command has to be fully expandable (if the variable is set), since -% the result winds up in the index file. This means that if the -% variable's value contains other Texinfo commands, it's almost certain -% it will fail (although perhaps we could fix that with sufficient work -% to do a one-level expansion on the result, instead of complete). -% -\def\expandablevalue#1{% - \expandafter\ifx\csname SET#1\endcsname\relax - {[No value for ``#1'']}% - \message{Variable `#1', used in @value, is not set.}% - \else - \csname SET#1\endcsname - \fi -} - -% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined -% with @set. -% -% To get special treatment of `@end ifset,' call \makeond and the redefine. -% -\makecond{ifset} -\def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}} -\def\doifset#1#2{% - {% - \makevalueexpandable - \let\next=\empty - \expandafter\ifx\csname SET#2\endcsname\relax - #1% If not set, redefine \next. - \fi - \expandafter - }\next -} -\def\ifsetfail{\doignore{ifset}} - -% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been -% defined with @set, or has been undefined with @clear. -% -% The `\else' inside the `\doifset' parameter is a trick to reuse the -% above code: if the variable is not set, do nothing, if it is set, -% then redefine \next to \ifclearfail. -% -\makecond{ifclear} -\def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}} -\def\ifclearfail{\doignore{ifclear}} - -% @dircategory CATEGORY -- specify a category of the dir file -% which this file should belong to. Ignore this in TeX. -\let\dircategory=\comment - -% @defininfoenclose. -\let\definfoenclose=\comment - - -\message{indexing,} -% Index generation facilities - -% Define \newwrite to be identical to plain tex's \newwrite -% except not \outer, so it can be used within macros and \if's. -\edef\newwrite{\makecsname{ptexnewwrite}} - -% \newindex {foo} defines an index named foo. -% It automatically defines \fooindex such that -% \fooindex ...rest of line... puts an entry in the index foo. -% It also defines \fooindfile to be the number of the output channel for -% the file that accumulates this index. The file's extension is foo. -% The name of an index should be no more than 2 characters long -% for the sake of vms. -% -\def\newindex#1{% - \iflinks - \expandafter\newwrite \csname#1indfile\endcsname - \openout \csname#1indfile\endcsname \jobname.#1 % Open the file - \fi - \expandafter\xdef\csname#1index\endcsname{% % Define @#1index - \noexpand\doindex{#1}} -} - -% @defindex foo == \newindex{foo} -% -\def\defindex{\parsearg\newindex} - -% Define @defcodeindex, like @defindex except put all entries in @code. -% -\def\defcodeindex{\parsearg\newcodeindex} -% -\def\newcodeindex#1{% - \iflinks - \expandafter\newwrite \csname#1indfile\endcsname - \openout \csname#1indfile\endcsname \jobname.#1 - \fi - \expandafter\xdef\csname#1index\endcsname{% - \noexpand\docodeindex{#1}}% -} - - -% @synindex foo bar makes index foo feed into index bar. -% Do this instead of @defindex foo if you don't want it as a separate index. -% -% @syncodeindex foo bar similar, but put all entries made for index foo -% inside @code. -% -\def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}} -\def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}} - -% #1 is \doindex or \docodeindex, #2 the index getting redefined (foo), -% #3 the target index (bar). -\def\dosynindex#1#2#3{% - % Only do \closeout if we haven't already done it, else we'll end up - % closing the target index. - \expandafter \ifx\csname donesynindex#2\endcsname \undefined - % The \closeout helps reduce unnecessary open files; the limit on the - % Acorn RISC OS is a mere 16 files. - \expandafter\closeout\csname#2indfile\endcsname - \expandafter\let\csname\donesynindex#2\endcsname = 1 - \fi - % redefine \fooindfile: - \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname - \expandafter\let\csname#2indfile\endcsname=\temp - % redefine \fooindex: - \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}% -} - -% Define \doindex, the driver for all \fooindex macros. -% Argument #1 is generated by the calling \fooindex macro, -% and it is "foo", the name of the index. - -% \doindex just uses \parsearg; it calls \doind for the actual work. -% This is because \doind is more useful to call from other macros. - -% There is also \dosubind {index}{topic}{subtopic} -% which makes an entry in a two-level index such as the operation index. - -\def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer} -\def\singleindexer #1{\doind{\indexname}{#1}} - -% like the previous two, but they put @code around the argument. -\def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer} -\def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}} - -% Take care of Texinfo commands that can appear in an index entry. -% Since there are some commands we want to expand, and others we don't, -% we have to laboriously prevent expansion for those that we don't. -% -\def\indexdummies{% - \escapechar = `\\ % use backslash in output files. - \def\@{@}% change to @@ when we switch to @ as escape char in index files. - \def\ {\realbackslash\space }% - % - % Need these in case \tex is in effect and \{ is a \delimiter again. - % But can't use \lbracecmd and \rbracecmd because texindex assumes - % braces and backslashes are used only as delimiters. - \let\{ = \mylbrace - \let\} = \myrbrace - % - % I don't entirely understand this, but when an index entry is - % generated from a macro call, the \endinput which \scanmacro inserts - % causes processing to be prematurely terminated. This is, - % apparently, because \indexsorttmp is fully expanded, and \endinput - % is an expandable command. The redefinition below makes \endinput - % disappear altogether for that purpose -- although logging shows that - % processing continues to some further point. On the other hand, it - % seems \endinput does not hurt in the printed index arg, since that - % is still getting written without apparent harm. - % - % Sample source (mac-idx3.tex, reported by Graham Percival to - % help-texinfo, 22may06): - % @macro funindex {WORD} - % @findex xyz - % @end macro - % ... - % @funindex commtest - % - % The above is not enough to reproduce the bug, but it gives the flavor. - % - % Sample whatsit resulting: - % .@write3{\entry{xyz}{@folio }{@code {xyz@endinput }}} - % - % So: - \let\endinput = \empty - % - % Do the redefinitions. - \commondummies -} - -% For the aux and toc files, @ is the escape character. So we want to -% redefine everything using @ as the escape character (instead of -% \realbackslash, still used for index files). When everything uses @, -% this will be simpler. -% -\def\atdummies{% - \def\@{@@}% - \def\ {@ }% - \let\{ = \lbraceatcmd - \let\} = \rbraceatcmd - % - % Do the redefinitions. - \commondummies - \otherbackslash -} - -% Called from \indexdummies and \atdummies. -% -\def\commondummies{% - % - % \definedummyword defines \#1 as \string\#1\space, thus effectively - % preventing its expansion. This is used only for control% words, - % not control letters, because the \space would be incorrect for - % control characters, but is needed to separate the control word - % from whatever follows. - % - % For control letters, we have \definedummyletter, which omits the - % space. - % - % These can be used both for control words that take an argument and - % those that do not. If it is followed by {arg} in the input, then - % that will dutifully get written to the index (or wherever). - % - \def\definedummyword ##1{\def##1{\string##1\space}}% - \def\definedummyletter##1{\def##1{\string##1}}% - \let\definedummyaccent\definedummyletter - % - \commondummiesnofonts - % - \definedummyletter\_% - % - % Non-English letters. - \definedummyword\AA - \definedummyword\AE - \definedummyword\L - \definedummyword\OE - \definedummyword\O - \definedummyword\aa - \definedummyword\ae - \definedummyword\l - \definedummyword\oe - \definedummyword\o - \definedummyword\ss - \definedummyword\exclamdown - \definedummyword\questiondown - \definedummyword\ordf - \definedummyword\ordm - % - % Although these internal commands shouldn't show up, sometimes they do. - \definedummyword\bf - \definedummyword\gtr - \definedummyword\hat - \definedummyword\less - \definedummyword\sf - \definedummyword\sl - \definedummyword\tclose - \definedummyword\tt - % - \definedummyword\LaTeX - \definedummyword\TeX - % - % Assorted special characters. - \definedummyword\bullet - \definedummyword\comma - \definedummyword\copyright - \definedummyword\registeredsymbol - \definedummyword\dots - \definedummyword\enddots - \definedummyword\equiv - \definedummyword\error - \definedummyword\euro - \definedummyword\expansion - \definedummyword\minus - \definedummyword\pounds - \definedummyword\point - \definedummyword\print - \definedummyword\result - \definedummyword\textdegree - % - % We want to disable all macros so that they are not expanded by \write. - \macrolist - % - \normalturnoffactive - % - % Handle some cases of @value -- where it does not contain any - % (non-fully-expandable) commands. - \makevalueexpandable -} - -% \commondummiesnofonts: common to \commondummies and \indexnofonts. -% -\def\commondummiesnofonts{% - % Control letters and accents. - \definedummyletter\!% - \definedummyaccent\"% - \definedummyaccent\'% - \definedummyletter\*% - \definedummyaccent\,% - \definedummyletter\.% - \definedummyletter\/% - \definedummyletter\:% - \definedummyaccent\=% - \definedummyletter\?% - \definedummyaccent\^% - \definedummyaccent\`% - \definedummyaccent\~% - \definedummyword\u - \definedummyword\v - \definedummyword\H - \definedummyword\dotaccent - \definedummyword\ringaccent - \definedummyword\tieaccent - \definedummyword\ubaraccent - \definedummyword\udotaccent - \definedummyword\dotless - % - % Texinfo font commands. - \definedummyword\b - \definedummyword\i - \definedummyword\r - \definedummyword\sc - \definedummyword\t - % - % Commands that take arguments. - \definedummyword\acronym - \definedummyword\cite - \definedummyword\code - \definedummyword\command - \definedummyword\dfn - \definedummyword\emph - \definedummyword\env - \definedummyword\file - \definedummyword\kbd - \definedummyword\key - \definedummyword\math - \definedummyword\option - \definedummyword\pxref - \definedummyword\ref - \definedummyword\samp - \definedummyword\strong - \definedummyword\tie - \definedummyword\uref - \definedummyword\url - \definedummyword\var - \definedummyword\verb - \definedummyword\w - \definedummyword\xref -} - -% \indexnofonts is used when outputting the strings to sort the index -% by, and when constructing control sequence names. It eliminates all -% control sequences and just writes whatever the best ASCII sort string -% would be for a given command (usually its argument). -% -\def\indexnofonts{% - % Accent commands should become @asis. - \def\definedummyaccent##1{\let##1\asis}% - % We can just ignore other control letters. - \def\definedummyletter##1{\let##1\empty}% - % Hopefully, all control words can become @asis. - \let\definedummyword\definedummyaccent - % - \commondummiesnofonts - % - % Don't no-op \tt, since it isn't a user-level command - % and is used in the definitions of the active chars like <, >, |, etc. - % Likewise with the other plain tex font commands. - %\let\tt=\asis - % - \def\ { }% - \def\@{@}% - % how to handle braces? - \def\_{\normalunderscore}% - % - % Non-English letters. - \def\AA{AA}% - \def\AE{AE}% - \def\L{L}% - \def\OE{OE}% - \def\O{O}% - \def\aa{aa}% - \def\ae{ae}% - \def\l{l}% - \def\oe{oe}% - \def\o{o}% - \def\ss{ss}% - \def\exclamdown{!}% - \def\questiondown{?}% - \def\ordf{a}% - \def\ordm{o}% - % - \def\LaTeX{LaTeX}% - \def\TeX{TeX}% - % - % Assorted special characters. - % (The following {} will end up in the sort string, but that's ok.) - \def\bullet{bullet}% - \def\comma{,}% - \def\copyright{copyright}% - \def\registeredsymbol{R}% - \def\dots{...}% - \def\enddots{...}% - \def\equiv{==}% - \def\error{error}% - \def\euro{euro}% - \def\expansion{==>}% - \def\minus{-}% - \def\pounds{pounds}% - \def\point{.}% - \def\print{-|}% - \def\result{=>}% - \def\textdegree{degrees}% - % - % We need to get rid of all macros, leaving only the arguments (if present). - % Of course this is not nearly correct, but it is the best we can do for now. - % makeinfo does not expand macros in the argument to @deffn, which ends up - % writing an index entry, and texindex isn't prepared for an index sort entry - % that starts with \. - % - % Since macro invocations are followed by braces, we can just redefine them - % to take a single TeX argument. The case of a macro invocation that - % goes to end-of-line is not handled. - % - \macrolist -} - -\let\indexbackslash=0 %overridden during \printindex. -\let\SETmarginindex=\relax % put index entries in margin (undocumented)? - -% Most index entries go through here, but \dosubind is the general case. -% #1 is the index name, #2 is the entry text. -\def\doind#1#2{\dosubind{#1}{#2}{}} - -% Workhorse for all \fooindexes. -% #1 is name of index, #2 is stuff to put there, #3 is subentry -- -% empty if called from \doind, as we usually are (the main exception -% is with most defuns, which call us directly). -% -\def\dosubind#1#2#3{% - \iflinks - {% - % Store the main index entry text (including the third arg). - \toks0 = {#2}% - % If third arg is present, precede it with a space. - \def\thirdarg{#3}% - \ifx\thirdarg\empty \else - \toks0 = \expandafter{\the\toks0 \space #3}% - \fi - % - \edef\writeto{\csname#1indfile\endcsname}% - % - \ifvmode - \dosubindsanitize - \else - \dosubindwrite - \fi - }% - \fi -} - -% Write the entry in \toks0 to the index file: -% -\def\dosubindwrite{% - % Put the index entry in the margin if desired. - \ifx\SETmarginindex\relax\else - \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}% - \fi - % - % Remember, we are within a group. - \indexdummies % Must do this here, since \bf, etc expand at this stage - \def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now - % so it will be output as is; and it will print as backslash. - % - % Process the index entry with all font commands turned off, to - % get the string to sort by. - {\indexnofonts - \edef\temp{\the\toks0}% need full expansion - \xdef\indexsorttmp{\temp}% - }% - % - % Set up the complete index entry, with both the sort key and - % the original text, including any font commands. We write - % three arguments to \entry to the .?? file (four in the - % subentry case), texindex reduces to two when writing the .??s - % sorted result. - \edef\temp{% - \write\writeto{% - \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}% - }% - \temp -} - -% Take care of unwanted page breaks: -% -% If a skip is the last thing on the list now, preserve it -% by backing up by \lastskip, doing the \write, then inserting -% the skip again. Otherwise, the whatsit generated by the -% \write will make \lastskip zero. The result is that sequences -% like this: -% @end defun -% @tindex whatever -% @defun ... -% will have extra space inserted, because the \medbreak in the -% start of the @defun won't see the skip inserted by the @end of -% the previous defun. -% -% But don't do any of this if we're not in vertical mode. We -% don't want to do a \vskip and prematurely end a paragraph. -% -% Avoid page breaks due to these extra skips, too. -% -% But wait, there is a catch there: -% We'll have to check whether \lastskip is zero skip. \ifdim is not -% sufficient for this purpose, as it ignores stretch and shrink parts -% of the skip. The only way seems to be to check the textual -% representation of the skip. -% -% The following is almost like \def\zeroskipmacro{0.0pt} except that -% the ``p'' and ``t'' characters have catcode \other, not 11 (letter). -% -\edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname} -% -% ..., ready, GO: -% -\def\dosubindsanitize{% - % \lastskip and \lastpenalty cannot both be nonzero simultaneously. - \skip0 = \lastskip - \edef\lastskipmacro{\the\lastskip}% - \count255 = \lastpenalty - % - % If \lastskip is nonzero, that means the last item was a - % skip. And since a skip is discardable, that means this - % -\skip0 glue we're inserting is preceded by a - % non-discardable item, therefore it is not a potential - % breakpoint, therefore no \nobreak needed. - \ifx\lastskipmacro\zeroskipmacro - \else - \vskip-\skip0 - \fi - % - \dosubindwrite - % - \ifx\lastskipmacro\zeroskipmacro - % If \lastskip was zero, perhaps the last item was a penalty, and - % perhaps it was >=10000, e.g., a \nobreak. In that case, we want - % to re-insert the same penalty (values >10000 are used for various - % signals); since we just inserted a non-discardable item, any - % following glue (such as a \parskip) would be a breakpoint. For example: - % - % @deffn deffn-whatever - % @vindex index-whatever - % Description. - % would allow a break between the index-whatever whatsit - % and the "Description." paragraph. - \ifnum\count255>9999 \penalty\count255 \fi - \else - % On the other hand, if we had a nonzero \lastskip, - % this make-up glue would be preceded by a non-discardable item - % (the whatsit from the \write), so we must insert a \nobreak. - \nobreak\vskip\skip0 - \fi -} - -% The index entry written in the file actually looks like -% \entry {sortstring}{page}{topic} -% or -% \entry {sortstring}{page}{topic}{subtopic} -% The texindex program reads in these files and writes files -% containing these kinds of lines: -% \initial {c} -% before the first topic whose initial is c -% \entry {topic}{pagelist} -% for a topic that is used without subtopics -% \primary {topic} -% for the beginning of a topic that is used with subtopics -% \secondary {subtopic}{pagelist} -% for each subtopic. - -% Define the user-accessible indexing commands -% @findex, @vindex, @kindex, @cindex. - -\def\findex {\fnindex} -\def\kindex {\kyindex} -\def\cindex {\cpindex} -\def\vindex {\vrindex} -\def\tindex {\tpindex} -\def\pindex {\pgindex} - -\def\cindexsub {\begingroup\obeylines\cindexsub} -{\obeylines % -\gdef\cindexsub "#1" #2^^M{\endgroup % -\dosubind{cp}{#2}{#1}}} - -% Define the macros used in formatting output of the sorted index material. - -% @printindex causes a particular index (the ??s file) to get printed. -% It does not print any chapter heading (usually an @unnumbered). -% -\parseargdef\printindex{\begingroup - \dobreak \chapheadingskip{10000}% - % - \smallfonts \rm - \tolerance = 9500 - \everypar = {}% don't want the \kern\-parindent from indentation suppression. - % - % See if the index file exists and is nonempty. - % Change catcode of @ here so that if the index file contains - % \initial {@} - % as its first line, TeX doesn't complain about mismatched braces - % (because it thinks @} is a control sequence). - \catcode`\@ = 11 - \openin 1 \jobname.#1s - \ifeof 1 - % \enddoublecolumns gets confused if there is no text in the index, - % and it loses the chapter title and the aux file entries for the - % index. The easiest way to prevent this problem is to make sure - % there is some text. - \putwordIndexNonexistent - \else - % - % If the index file exists but is empty, then \openin leaves \ifeof - % false. We have to make TeX try to read something from the file, so - % it can discover if there is anything in it. - \read 1 to \temp - \ifeof 1 - \putwordIndexIsEmpty - \else - % Index files are almost Texinfo source, but we use \ as the escape - % character. It would be better to use @, but that's too big a change - % to make right now. - \def\indexbackslash{\backslashcurfont}% - \catcode`\\ = 0 - \escapechar = `\\ - \begindoublecolumns - \input \jobname.#1s - \enddoublecolumns - \fi - \fi - \closein 1 -\endgroup} - -% These macros are used by the sorted index file itself. -% Change them to control the appearance of the index. - -\def\initial#1{{% - % Some minor font changes for the special characters. - \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt - % - % Remove any glue we may have, we'll be inserting our own. - \removelastskip - % - % We like breaks before the index initials, so insert a bonus. - \nobreak - \vskip 0pt plus 3\baselineskip - \penalty 0 - \vskip 0pt plus -3\baselineskip - % - % Typeset the initial. Making this add up to a whole number of - % baselineskips increases the chance of the dots lining up from column - % to column. It still won't often be perfect, because of the stretch - % we need before each entry, but it's better. - % - % No shrink because it confuses \balancecolumns. - \vskip 1.67\baselineskip plus .5\baselineskip - \leftline{\secbf #1}% - % Do our best not to break after the initial. - \nobreak - \vskip .33\baselineskip plus .1\baselineskip -}} - -% \entry typesets a paragraph consisting of the text (#1), dot leaders, and -% then page number (#2) flushed to the right margin. It is used for index -% and table of contents entries. The paragraph is indented by \leftskip. -% -% A straightforward implementation would start like this: -% \def\entry#1#2{... -% But this frozes the catcodes in the argument, and can cause problems to -% @code, which sets - active. This problem was fixed by a kludge--- -% ``-'' was active throughout whole index, but this isn't really right. -% -% The right solution is to prevent \entry from swallowing the whole text. -% --kasal, 21nov03 -\def\entry{% - \begingroup - % - % Start a new paragraph if necessary, so our assignments below can't - % affect previous text. - \par - % - % Do not fill out the last line with white space. - \parfillskip = 0in - % - % No extra space above this paragraph. - \parskip = 0in - % - % Do not prefer a separate line ending with a hyphen to fewer lines. - \finalhyphendemerits = 0 - % - % \hangindent is only relevant when the entry text and page number - % don't both fit on one line. In that case, bob suggests starting the - % dots pretty far over on the line. Unfortunately, a large - % indentation looks wrong when the entry text itself is broken across - % lines. So we use a small indentation and put up with long leaders. - % - % \hangafter is reset to 1 (which is the value we want) at the start - % of each paragraph, so we need not do anything with that. - \hangindent = 2em - % - % When the entry text needs to be broken, just fill out the first line - % with blank space. - \rightskip = 0pt plus1fil - % - % A bit of stretch before each entry for the benefit of balancing - % columns. - \vskip 0pt plus1pt - % - % Swallow the left brace of the text (first parameter): - \afterassignment\doentry - \let\temp = -} -\def\doentry{% - \bgroup % Instead of the swallowed brace. - \noindent - \aftergroup\finishentry - % And now comes the text of the entry. -} -\def\finishentry#1{% - % #1 is the page number. - % - % The following is kludged to not output a line of dots in the index if - % there are no page numbers. The next person who breaks this will be - % cursed by a Unix daemon. - \def\tempa{{\rm }}% - \def\tempb{#1}% - \edef\tempc{\tempa}% - \edef\tempd{\tempb}% - \ifx\tempc\tempd - \ % - \else - % - % If we must, put the page number on a line of its own, and fill out - % this line with blank space. (The \hfil is overwhelmed with the - % fill leaders glue in \indexdotfill if the page number does fit.) - \hfil\penalty50 - \null\nobreak\indexdotfill % Have leaders before the page number. - % - % The `\ ' here is removed by the implicit \unskip that TeX does as - % part of (the primitive) \par. Without it, a spurious underfull - % \hbox ensues. - \ifpdf - \pdfgettoks#1.% - \ \the\toksA - \else - \ #1% - \fi - \fi - \par - \endgroup -} - -% Like plain.tex's \dotfill, except uses up at least 1 em. -\def\indexdotfill{\cleaders - \hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus 1fill} - -\def\primary #1{\line{#1\hfil}} - -\newskip\secondaryindent \secondaryindent=0.5cm -\def\secondary#1#2{{% - \parfillskip=0in - \parskip=0in - \hangindent=1in - \hangafter=1 - \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill - \ifpdf - \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph. - \else - #2 - \fi - \par -}} - -% Define two-column mode, which we use to typeset indexes. -% Adapted from the TeXbook, page 416, which is to say, -% the manmac.tex format used to print the TeXbook itself. -\catcode`\@=11 - -\newbox\partialpage -\newdimen\doublecolumnhsize - -\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns - % Grab any single-column material above us. - \output = {% - % - % Here is a possibility not foreseen in manmac: if we accumulate a - % whole lot of material, we might end up calling this \output - % routine twice in a row (see the doublecol-lose test, which is - % essentially a couple of indexes with @setchapternewpage off). In - % that case we just ship out what is in \partialpage with the normal - % output routine. Generally, \partialpage will be empty when this - % runs and this will be a no-op. See the indexspread.tex test case. - \ifvoid\partialpage \else - \onepageout{\pagecontents\partialpage}% - \fi - % - \global\setbox\partialpage = \vbox{% - % Unvbox the main output page. - \unvbox\PAGE - \kern-\topskip \kern\baselineskip - }% - }% - \eject % run that output routine to set \partialpage - % - % Use the double-column output routine for subsequent pages. - \output = {\doublecolumnout}% - % - % Change the page size parameters. We could do this once outside this - % routine, in each of @smallbook, @afourpaper, and the default 8.5x11 - % format, but then we repeat the same computation. Repeating a couple - % of assignments once per index is clearly meaningless for the - % execution time, so we may as well do it in one place. - % - % First we halve the line length, less a little for the gutter between - % the columns. We compute the gutter based on the line length, so it - % changes automatically with the paper format. The magic constant - % below is chosen so that the gutter has the same value (well, +-<1pt) - % as it did when we hard-coded it. - % - % We put the result in a separate register, \doublecolumhsize, so we - % can restore it in \pagesofar, after \hsize itself has (potentially) - % been clobbered. - % - \doublecolumnhsize = \hsize - \advance\doublecolumnhsize by -.04154\hsize - \divide\doublecolumnhsize by 2 - \hsize = \doublecolumnhsize - % - % Double the \vsize as well. (We don't need a separate register here, - % since nobody clobbers \vsize.) - \vsize = 2\vsize -} - -% The double-column output routine for all double-column pages except -% the last. -% -\def\doublecolumnout{% - \splittopskip=\topskip \splitmaxdepth=\maxdepth - % Get the available space for the double columns -- the normal - % (undoubled) page height minus any material left over from the - % previous page. - \dimen@ = \vsize - \divide\dimen@ by 2 - \advance\dimen@ by -\ht\partialpage - % - % box0 will be the left-hand column, box2 the right. - \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@ - \onepageout\pagesofar - \unvbox255 - \penalty\outputpenalty -} -% -% Re-output the contents of the output page -- any previous material, -% followed by the two boxes we just split, in box0 and box2. -\def\pagesofar{% - \unvbox\partialpage - % - \hsize = \doublecolumnhsize - \wd0=\hsize \wd2=\hsize - \hbox to\pagewidth{\box0\hfil\box2}% -} -% -% All done with double columns. -\def\enddoublecolumns{% - \output = {% - % Split the last of the double-column material. Leave it on the - % current page, no automatic page break. - \balancecolumns - % - % If we end up splitting too much material for the current page, - % though, there will be another page break right after this \output - % invocation ends. Having called \balancecolumns once, we do not - % want to call it again. Therefore, reset \output to its normal - % definition right away. (We hope \balancecolumns will never be - % called on to balance too much material, but if it is, this makes - % the output somewhat more palatable.) - \global\output = {\onepageout{\pagecontents\PAGE}}% - }% - \eject - \endgroup % started in \begindoublecolumns - % - % \pagegoal was set to the doubled \vsize above, since we restarted - % the current page. We're now back to normal single-column - % typesetting, so reset \pagegoal to the normal \vsize (after the - % \endgroup where \vsize got restored). - \pagegoal = \vsize -} -% -% Called at the end of the double column material. -\def\balancecolumns{% - \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120. - \dimen@ = \ht0 - \advance\dimen@ by \topskip - \advance\dimen@ by-\baselineskip - \divide\dimen@ by 2 % target to split to - %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}% - \splittopskip = \topskip - % Loop until we get a decent breakpoint. - {% - \vbadness = 10000 - \loop - \global\setbox3 = \copy0 - \global\setbox1 = \vsplit3 to \dimen@ - \ifdim\ht3>\dimen@ - \global\advance\dimen@ by 1pt - \repeat - }% - %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}% - \setbox0=\vbox to\dimen@{\unvbox1}% - \setbox2=\vbox to\dimen@{\unvbox3}% - % - \pagesofar -} -\catcode`\@ = \other - - -\message{sectioning,} -% Chapters, sections, etc. - -% \unnumberedno is an oxymoron, of course. But we count the unnumbered -% sections so that we can refer to them unambiguously in the pdf -% outlines by their "section number". We avoid collisions with chapter -% numbers by starting them at 10000. (If a document ever has 10000 -% chapters, we're in trouble anyway, I'm sure.) -\newcount\unnumberedno \unnumberedno = 10000 -\newcount\chapno -\newcount\secno \secno=0 -\newcount\subsecno \subsecno=0 -\newcount\subsubsecno \subsubsecno=0 - -% This counter is funny since it counts through charcodes of letters A, B, ... -\newcount\appendixno \appendixno = `\@ -% -% \def\appendixletter{\char\the\appendixno} -% We do the following ugly conditional instead of the above simple -% construct for the sake of pdftex, which needs the actual -% letter in the expansion, not just typeset. -% -\def\appendixletter{% - \ifnum\appendixno=`A A% - \else\ifnum\appendixno=`B B% - \else\ifnum\appendixno=`C C% - \else\ifnum\appendixno=`D D% - \else\ifnum\appendixno=`E E% - \else\ifnum\appendixno=`F F% - \else\ifnum\appendixno=`G G% - \else\ifnum\appendixno=`H H% - \else\ifnum\appendixno=`I I% - \else\ifnum\appendixno=`J J% - \else\ifnum\appendixno=`K K% - \else\ifnum\appendixno=`L L% - \else\ifnum\appendixno=`M M% - \else\ifnum\appendixno=`N N% - \else\ifnum\appendixno=`O O% - \else\ifnum\appendixno=`P P% - \else\ifnum\appendixno=`Q Q% - \else\ifnum\appendixno=`R R% - \else\ifnum\appendixno=`S S% - \else\ifnum\appendixno=`T T% - \else\ifnum\appendixno=`U U% - \else\ifnum\appendixno=`V V% - \else\ifnum\appendixno=`W W% - \else\ifnum\appendixno=`X X% - \else\ifnum\appendixno=`Y Y% - \else\ifnum\appendixno=`Z Z% - % The \the is necessary, despite appearances, because \appendixletter is - % expanded while writing the .toc file. \char\appendixno is not - % expandable, thus it is written literally, thus all appendixes come out - % with the same letter (or @) in the toc without it. - \else\char\the\appendixno - \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi - \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi} - -% Each @chapter defines this as the name of the chapter. -% page headings and footings can use it. @section does likewise. -% However, they are not reliable, because we don't use marks. -\def\thischapter{} -\def\thissection{} - -\newcount\absseclevel % used to calculate proper heading level -\newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count - -% @raisesections: treat @section as chapter, @subsection as section, etc. -\def\raisesections{\global\advance\secbase by -1} -\let\up=\raisesections % original BFox name - -% @lowersections: treat @chapter as section, @section as subsection, etc. -\def\lowersections{\global\advance\secbase by 1} -\let\down=\lowersections % original BFox name - -% we only have subsub. -\chardef\maxseclevel = 3 -% -% A numbered section within an unnumbered changes to unnumbered too. -% To achive this, remember the "biggest" unnum. sec. we are currently in: -\chardef\unmlevel = \maxseclevel -% -% Trace whether the current chapter is an appendix or not: -% \chapheadtype is "N" or "A", unnumbered chapters are ignored. -\def\chapheadtype{N} - -% Choose a heading macro -% #1 is heading type -% #2 is heading level -% #3 is text for heading -\def\genhead#1#2#3{% - % Compute the abs. sec. level: - \absseclevel=#2 - \advance\absseclevel by \secbase - % Make sure \absseclevel doesn't fall outside the range: - \ifnum \absseclevel < 0 - \absseclevel = 0 - \else - \ifnum \absseclevel > 3 - \absseclevel = 3 - \fi - \fi - % The heading type: - \def\headtype{#1}% - \if \headtype U% - \ifnum \absseclevel < \unmlevel - \chardef\unmlevel = \absseclevel - \fi - \else - % Check for appendix sections: - \ifnum \absseclevel = 0 - \edef\chapheadtype{\headtype}% - \else - \if \headtype A\if \chapheadtype N% - \errmessage{@appendix... within a non-appendix chapter}% - \fi\fi - \fi - % Check for numbered within unnumbered: - \ifnum \absseclevel > \unmlevel - \def\headtype{U}% - \else - \chardef\unmlevel = 3 - \fi - \fi - % Now print the heading: - \if \headtype U% - \ifcase\absseclevel - \unnumberedzzz{#3}% - \or \unnumberedseczzz{#3}% - \or \unnumberedsubseczzz{#3}% - \or \unnumberedsubsubseczzz{#3}% - \fi - \else - \if \headtype A% - \ifcase\absseclevel - \appendixzzz{#3}% - \or \appendixsectionzzz{#3}% - \or \appendixsubseczzz{#3}% - \or \appendixsubsubseczzz{#3}% - \fi - \else - \ifcase\absseclevel - \chapterzzz{#3}% - \or \seczzz{#3}% - \or \numberedsubseczzz{#3}% - \or \numberedsubsubseczzz{#3}% - \fi - \fi - \fi - \suppressfirstparagraphindent -} - -% an interface: -\def\numhead{\genhead N} -\def\apphead{\genhead A} -\def\unnmhead{\genhead U} - -% @chapter, @appendix, @unnumbered. Increment top-level counter, reset -% all lower-level sectioning counters to zero. -% -% Also set \chaplevelprefix, which we prepend to @float sequence numbers -% (e.g., figures), q.v. By default (before any chapter), that is empty. -\let\chaplevelprefix = \empty -% -\outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz -\def\chapterzzz#1{% - % section resetting is \global in case the chapter is in a group, such - % as an @include file. - \global\secno=0 \global\subsecno=0 \global\subsubsecno=0 - \global\advance\chapno by 1 - % - % Used for \float. - \gdef\chaplevelprefix{\the\chapno.}% - \resetallfloatnos - % - \message{\putwordChapter\space \the\chapno}% - % - % Write the actual heading. - \chapmacro{#1}{Ynumbered}{\the\chapno}% - % - % So @section and the like are numbered underneath this chapter. - \global\let\section = \numberedsec - \global\let\subsection = \numberedsubsec - \global\let\subsubsection = \numberedsubsubsec -} - -\outer\parseargdef\appendix{\apphead0{#1}} % normally apphead0 calls appendixzzz -\def\appendixzzz#1{% - \global\secno=0 \global\subsecno=0 \global\subsubsecno=0 - \global\advance\appendixno by 1 - \gdef\chaplevelprefix{\appendixletter.}% - \resetallfloatnos - % - \def\appendixnum{\putwordAppendix\space \appendixletter}% - \message{\appendixnum}% - % - \chapmacro{#1}{Yappendix}{\appendixletter}% - % - \global\let\section = \appendixsec - \global\let\subsection = \appendixsubsec - \global\let\subsubsection = \appendixsubsubsec -} - -\outer\parseargdef\unnumbered{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz -\def\unnumberedzzz#1{% - \global\secno=0 \global\subsecno=0 \global\subsubsecno=0 - \global\advance\unnumberedno by 1 - % - % Since an unnumbered has no number, no prefix for figures. - \global\let\chaplevelprefix = \empty - \resetallfloatnos - % - % This used to be simply \message{#1}, but TeX fully expands the - % argument to \message. Therefore, if #1 contained @-commands, TeX - % expanded them. For example, in `@unnumbered The @cite{Book}', TeX - % expanded @cite (which turns out to cause errors because \cite is meant - % to be executed, not expanded). - % - % Anyway, we don't want the fully-expanded definition of @cite to appear - % as a result of the \message, we just want `@cite' itself. We use - % \the to achieve this: TeX expands \the only once, - % simply yielding the contents of . (We also do this for - % the toc entries.) - \toks0 = {#1}% - \message{(\the\toks0)}% - % - \chapmacro{#1}{Ynothing}{\the\unnumberedno}% - % - \global\let\section = \unnumberedsec - \global\let\subsection = \unnumberedsubsec - \global\let\subsubsection = \unnumberedsubsubsec -} - -% @centerchap is like @unnumbered, but the heading is centered. -\outer\parseargdef\centerchap{% - % Well, we could do the following in a group, but that would break - % an assumption that \chapmacro is called at the outermost level. - % Thus we are safer this way: --kasal, 24feb04 - \let\centerparametersmaybe = \centerparameters - \unnmhead0{#1}% - \let\centerparametersmaybe = \relax -} - -% @top is like @unnumbered. -\let\top\unnumbered - -% Sections. -\outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz -\def\seczzz#1{% - \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1 - \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}% -} - -\outer\parseargdef\appendixsection{\apphead1{#1}} % normally calls appendixsectionzzz -\def\appendixsectionzzz#1{% - \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1 - \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}% -} -\let\appendixsec\appendixsection - -\outer\parseargdef\unnumberedsec{\unnmhead1{#1}} % normally calls unnumberedseczzz -\def\unnumberedseczzz#1{% - \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1 - \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}% -} - -% Subsections. -\outer\parseargdef\numberedsubsec{\numhead2{#1}} % normally calls numberedsubseczzz -\def\numberedsubseczzz#1{% - \global\subsubsecno=0 \global\advance\subsecno by 1 - \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}% -} - -\outer\parseargdef\appendixsubsec{\apphead2{#1}} % normally calls appendixsubseczzz -\def\appendixsubseczzz#1{% - \global\subsubsecno=0 \global\advance\subsecno by 1 - \sectionheading{#1}{subsec}{Yappendix}% - {\appendixletter.\the\secno.\the\subsecno}% -} - -\outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}} %normally calls unnumberedsubseczzz -\def\unnumberedsubseczzz#1{% - \global\subsubsecno=0 \global\advance\subsecno by 1 - \sectionheading{#1}{subsec}{Ynothing}% - {\the\unnumberedno.\the\secno.\the\subsecno}% -} - -% Subsubsections. -\outer\parseargdef\numberedsubsubsec{\numhead3{#1}} % normally numberedsubsubseczzz -\def\numberedsubsubseczzz#1{% - \global\advance\subsubsecno by 1 - \sectionheading{#1}{subsubsec}{Ynumbered}% - {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}% -} - -\outer\parseargdef\appendixsubsubsec{\apphead3{#1}} % normally appendixsubsubseczzz -\def\appendixsubsubseczzz#1{% - \global\advance\subsubsecno by 1 - \sectionheading{#1}{subsubsec}{Yappendix}% - {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}% -} - -\outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}} %normally unnumberedsubsubseczzz -\def\unnumberedsubsubseczzz#1{% - \global\advance\subsubsecno by 1 - \sectionheading{#1}{subsubsec}{Ynothing}% - {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}% -} - -% These macros control what the section commands do, according -% to what kind of chapter we are in (ordinary, appendix, or unnumbered). -% Define them by default for a numbered chapter. -\let\section = \numberedsec -\let\subsection = \numberedsubsec -\let\subsubsection = \numberedsubsubsec - -% Define @majorheading, @heading and @subheading - -% NOTE on use of \vbox for chapter headings, section headings, and such: -% 1) We use \vbox rather than the earlier \line to permit -% overlong headings to fold. -% 2) \hyphenpenalty is set to 10000 because hyphenation in a -% heading is obnoxious; this forbids it. -% 3) Likewise, headings look best if no \parindent is used, and -% if justification is not attempted. Hence \raggedright. - - -\def\majorheading{% - {\advance\chapheadingskip by 10pt \chapbreak }% - \parsearg\chapheadingzzz -} - -\def\chapheading{\chapbreak \parsearg\chapheadingzzz} -\def\chapheadingzzz#1{% - {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 - \parindent=0pt\raggedright - \rm #1\hfill}}% - \bigskip \par\penalty 200\relax - \suppressfirstparagraphindent -} - -% @heading, @subheading, @subsubheading. -\parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{} - \suppressfirstparagraphindent} -\parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{} - \suppressfirstparagraphindent} -\parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{} - \suppressfirstparagraphindent} - -% These macros generate a chapter, section, etc. heading only -% (including whitespace, linebreaking, etc. around it), -% given all the information in convenient, parsed form. - -%%% Args are the skip and penalty (usually negative) -\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi} - -%%% Define plain chapter starts, and page on/off switching for it -% Parameter controlling skip before chapter headings (if needed) - -\newskip\chapheadingskip - -\def\chapbreak{\dobreak \chapheadingskip {-4000}} -\def\chappager{\par\vfill\supereject} -\def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi} - -\def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname} - -\def\CHAPPAGoff{% -\global\let\contentsalignmacro = \chappager -\global\let\pchapsepmacro=\chapbreak -\global\let\pagealignmacro=\chappager} - -\def\CHAPPAGon{% -\global\let\contentsalignmacro = \chappager -\global\let\pchapsepmacro=\chappager -\global\let\pagealignmacro=\chappager -\global\def\HEADINGSon{\HEADINGSsingle}} - -\def\CHAPPAGodd{% -\global\let\contentsalignmacro = \chapoddpage -\global\let\pchapsepmacro=\chapoddpage -\global\let\pagealignmacro=\chapoddpage -\global\def\HEADINGSon{\HEADINGSdouble}} - -\CHAPPAGon - -% Chapter opening. -% -% #1 is the text, #2 is the section type (Ynumbered, Ynothing, -% Yappendix, Yomitfromtoc), #3 the chapter number. -% -% To test against our argument. -\def\Ynothingkeyword{Ynothing} -\def\Yomitfromtockeyword{Yomitfromtoc} -\def\Yappendixkeyword{Yappendix} -% -\def\chapmacro#1#2#3{% - \pchapsepmacro - {% - \chapfonts \rm - % - % Have to define \thissection before calling \donoderef, because the - % xref code eventually uses it. On the other hand, it has to be called - % after \pchapsepmacro, or the headline will change too soon. - \gdef\thissection{#1}% - \gdef\thischaptername{#1}% - % - % Only insert the separating space if we have a chapter/appendix - % number, and don't print the unnumbered ``number''. - \def\temptype{#2}% - \ifx\temptype\Ynothingkeyword - \setbox0 = \hbox{}% - \def\toctype{unnchap}% - \gdef\thischapternum{}% - \gdef\thischapter{#1}% - \else\ifx\temptype\Yomitfromtockeyword - \setbox0 = \hbox{}% contents like unnumbered, but no toc entry - \def\toctype{omit}% - \gdef\thischapternum{}% - \gdef\thischapter{}% - \else\ifx\temptype\Yappendixkeyword - \setbox0 = \hbox{\putwordAppendix{} #3\enspace}% - \def\toctype{app}% - \xdef\thischapternum{\appendixletter}% - % We don't substitute the actual chapter name into \thischapter - % because we don't want its macros evaluated now. And we don't - % use \thissection because that changes with each section. - % - \xdef\thischapter{\putwordAppendix{} \appendixletter: - \noexpand\thischaptername}% - \else - \setbox0 = \hbox{#3\enspace}% - \def\toctype{numchap}% - \xdef\thischapternum{\the\chapno}% - \xdef\thischapter{\putwordChapter{} \the\chapno: - \noexpand\thischaptername}% - \fi\fi\fi - % - % Write the toc entry for this chapter. Must come before the - % \donoderef, because we include the current node name in the toc - % entry, and \donoderef resets it to empty. - \writetocentry{\toctype}{#1}{#3}% - % - % For pdftex, we have to write out the node definition (aka, make - % the pdfdest) after any page break, but before the actual text has - % been typeset. If the destination for the pdf outline is after the - % text, then jumping from the outline may wind up with the text not - % being visible, for instance under high magnification. - \donoderef{#2}% - % - % Typeset the actual heading. - \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright - \hangindent=\wd0 \centerparametersmaybe - \unhbox0 #1\par}% - }% - \nobreak\bigskip % no page break after a chapter title - \nobreak -} - -% @centerchap -- centered and unnumbered. -\let\centerparametersmaybe = \relax -\def\centerparameters{% - \advance\rightskip by 3\rightskip - \leftskip = \rightskip - \parfillskip = 0pt -} - - -% I don't think this chapter style is supported any more, so I'm not -% updating it with the new noderef stuff. We'll see. --karl, 11aug03. -% -\def\setchapterstyle #1 {\csname CHAPF#1\endcsname} -% -\def\unnchfopen #1{% -\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 - \parindent=0pt\raggedright - \rm #1\hfill}}\bigskip \par\nobreak -} -\def\chfopen #1#2{\chapoddpage {\chapfonts -\vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}% -\par\penalty 5000 % -} -\def\centerchfopen #1{% -\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 - \parindent=0pt - \hfill {\rm #1}\hfill}}\bigskip \par\nobreak -} -\def\CHAPFopen{% - \global\let\chapmacro=\chfopen - \global\let\centerchapmacro=\centerchfopen} - - -% Section titles. These macros combine the section number parts and -% call the generic \sectionheading to do the printing. -% -\newskip\secheadingskip -\def\secheadingbreak{\dobreak \secheadingskip{-1000}} - -% Subsection titles. -\newskip\subsecheadingskip -\def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}} - -% Subsubsection titles. -\def\subsubsecheadingskip{\subsecheadingskip} -\def\subsubsecheadingbreak{\subsecheadingbreak} - - -% Print any size, any type, section title. -% -% #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is -% the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the -% section number. -% -\def\sectionheading#1#2#3#4{% - {% - % Switch to the right set of fonts. - \csname #2fonts\endcsname \rm - % - % Insert space above the heading. - \csname #2headingbreak\endcsname - % - % Only insert the space after the number if we have a section number. - \def\sectionlevel{#2}% - \def\temptype{#3}% - % - \ifx\temptype\Ynothingkeyword - \setbox0 = \hbox{}% - \def\toctype{unn}% - \gdef\thissection{#1}% - \else\ifx\temptype\Yomitfromtockeyword - % for @headings -- no section number, don't include in toc, - % and don't redefine \thissection. - \setbox0 = \hbox{}% - \def\toctype{omit}% - \let\sectionlevel=\empty - \else\ifx\temptype\Yappendixkeyword - \setbox0 = \hbox{#4\enspace}% - \def\toctype{app}% - \gdef\thissection{#1}% - \else - \setbox0 = \hbox{#4\enspace}% - \def\toctype{num}% - \gdef\thissection{#1}% - \fi\fi\fi - % - % Write the toc entry (before \donoderef). See comments in \chapmacro. - \writetocentry{\toctype\sectionlevel}{#1}{#4}% - % - % Write the node reference (= pdf destination for pdftex). - % Again, see comments in \chapmacro. - \donoderef{#3}% - % - % Interline glue will be inserted when the vbox is completed. - % That glue will be a valid breakpoint for the page, since it'll be - % preceded by a whatsit (usually from the \donoderef, or from the - % \writetocentry if there was no node). We don't want to allow that - % break, since then the whatsits could end up on page n while the - % section is on page n+1, thus toc/etc. are wrong. Debian bug 276000. - \nobreak - % - % Output the actual section heading. - \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright - \hangindent=\wd0 % zero if no section number - \unhbox0 #1}% - }% - % Add extra space after the heading -- half of whatever came above it. - % Don't allow stretch, though. - \kern .5 \csname #2headingskip\endcsname - % - % Do not let the kern be a potential breakpoint, as it would be if it - % was followed by glue. - \nobreak - % - % We'll almost certainly start a paragraph next, so don't let that - % glue accumulate. (Not a breakpoint because it's preceded by a - % discardable item.) - \vskip-\parskip - % - % This is purely so the last item on the list is a known \penalty > - % 10000. This is so \startdefun can avoid allowing breakpoints after - % section headings. Otherwise, it would insert a valid breakpoint between: - % - % @section sec-whatever - % @deffn def-whatever - \penalty 10001 -} - - -\message{toc,} -% Table of contents. -\newwrite\tocfile - -% Write an entry to the toc file, opening it if necessary. -% Called from @chapter, etc. -% -% Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno} -% We append the current node name (if any) and page number as additional -% arguments for the \{chap,sec,...}entry macros which will eventually -% read this. The node name is used in the pdf outlines as the -% destination to jump to. -% -% We open the .toc file for writing here instead of at @setfilename (or -% any other fixed time) so that @contents can be anywhere in the document. -% But if #1 is `omit', then we don't do anything. This is used for the -% table of contents chapter openings themselves. -% -\newif\iftocfileopened -\def\omitkeyword{omit}% -% -\def\writetocentry#1#2#3{% - \edef\writetoctype{#1}% - \ifx\writetoctype\omitkeyword \else - \iftocfileopened\else - \immediate\openout\tocfile = \jobname.toc - \global\tocfileopenedtrue - \fi - % - \iflinks - {\atdummies - \edef\temp{% - \write\tocfile{@#1entry{#2}{#3}{\lastnode}{\noexpand\folio}}}% - \temp - }% - \fi - \fi - % - % Tell \shipout to create a pdf destination on each page, if we're - % writing pdf. These are used in the table of contents. We can't - % just write one on every page because the title pages are numbered - % 1 and 2 (the page numbers aren't printed), and so are the first - % two pages of the document. Thus, we'd have two destinations named - % `1', and two named `2'. - \ifpdf \global\pdfmakepagedesttrue \fi -} - - -% These characters do not print properly in the Computer Modern roman -% fonts, so we must take special care. This is more or less redundant -% with the Texinfo input format setup at the end of this file. -% -\def\activecatcodes{% - \catcode`\"=\active - \catcode`\$=\active - \catcode`\<=\active - \catcode`\>=\active - \catcode`\\=\active - \catcode`\^=\active - \catcode`\_=\active - \catcode`\|=\active - \catcode`\~=\active -} - - -% Read the toc file, which is essentially Texinfo input. -\def\readtocfile{% - \setupdatafile - \activecatcodes - \input \jobname.toc -} - -\newskip\contentsrightmargin \contentsrightmargin=1in -\newcount\savepageno -\newcount\lastnegativepageno \lastnegativepageno = -1 - -% Prepare to read what we've written to \tocfile. -% -\def\startcontents#1{% - % If @setchapternewpage on, and @headings double, the contents should - % start on an odd page, unlike chapters. Thus, we maintain - % \contentsalignmacro in parallel with \pagealignmacro. - % From: Torbjorn Granlund - \contentsalignmacro - \immediate\closeout\tocfile - % - % Don't need to put `Contents' or `Short Contents' in the headline. - % It is abundantly clear what they are. - \def\thischapter{}% - \chapmacro{#1}{Yomitfromtoc}{}% - % - \savepageno = \pageno - \begingroup % Set up to handle contents files properly. - \raggedbottom % Worry more about breakpoints than the bottom. - \advance\hsize by -\contentsrightmargin % Don't use the full line length. - % - % Roman numerals for page numbers. - \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi -} - - -% Normal (long) toc. -\def\contents{% - \startcontents{\putwordTOC}% - \openin 1 \jobname.toc - \ifeof 1 \else - \readtocfile - \fi - \vfill \eject - \contentsalignmacro % in case @setchapternewpage odd is in effect - \ifeof 1 \else - \pdfmakeoutlines - \fi - \closein 1 - \endgroup - \lastnegativepageno = \pageno - \global\pageno = \savepageno -} - -% And just the chapters. -\def\summarycontents{% - \startcontents{\putwordShortTOC}% - % - \let\numchapentry = \shortchapentry - \let\appentry = \shortchapentry - \let\unnchapentry = \shortunnchapentry - % We want a true roman here for the page numbers. - \secfonts - \let\rm=\shortcontrm \let\bf=\shortcontbf - \let\sl=\shortcontsl \let\tt=\shortconttt - \rm - \hyphenpenalty = 10000 - \advance\baselineskip by 1pt % Open it up a little. - \def\numsecentry##1##2##3##4{} - \let\appsecentry = \numsecentry - \let\unnsecentry = \numsecentry - \let\numsubsecentry = \numsecentry - \let\appsubsecentry = \numsecentry - \let\unnsubsecentry = \numsecentry - \let\numsubsubsecentry = \numsecentry - \let\appsubsubsecentry = \numsecentry - \let\unnsubsubsecentry = \numsecentry - \openin 1 \jobname.toc - \ifeof 1 \else - \readtocfile - \fi - \closein 1 - \vfill \eject - \contentsalignmacro % in case @setchapternewpage odd is in effect - \endgroup - \lastnegativepageno = \pageno - \global\pageno = \savepageno -} -\let\shortcontents = \summarycontents - -% Typeset the label for a chapter or appendix for the short contents. -% The arg is, e.g., `A' for an appendix, or `3' for a chapter. -% -\def\shortchaplabel#1{% - % This space should be enough, since a single number is .5em, and the - % widest letter (M) is 1em, at least in the Computer Modern fonts. - % But use \hss just in case. - % (This space doesn't include the extra space that gets added after - % the label; that gets put in by \shortchapentry above.) - % - % We'd like to right-justify chapter numbers, but that looks strange - % with appendix letters. And right-justifying numbers and - % left-justifying letters looks strange when there is less than 10 - % chapters. Have to read the whole toc once to know how many chapters - % there are before deciding ... - \hbox to 1em{#1\hss}% -} - -% These macros generate individual entries in the table of contents. -% The first argument is the chapter or section name. -% The last argument is the page number. -% The arguments in between are the chapter number, section number, ... - -% Chapters, in the main contents. -\def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}} -% -% Chapters, in the short toc. -% See comments in \dochapentry re vbox and related settings. -\def\shortchapentry#1#2#3#4{% - \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}% -} - -% Appendices, in the main contents. -% Need the word Appendix, and a fixed-size box. -% -\def\appendixbox#1{% - % We use M since it's probably the widest letter. - \setbox0 = \hbox{\putwordAppendix{} M}% - \hbox to \wd0{\putwordAppendix{} #1\hss}} -% -\def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\labelspace#1}{#4}} - -% Unnumbered chapters. -\def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}} -\def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}} - -% Sections. -\def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}} -\let\appsecentry=\numsecentry -\def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}} - -% Subsections. -\def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}} -\let\appsubsecentry=\numsubsecentry -\def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}} - -% And subsubsections. -\def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}} -\let\appsubsubsecentry=\numsubsubsecentry -\def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}} - -% This parameter controls the indentation of the various levels. -% Same as \defaultparindent. -\newdimen\tocindent \tocindent = 15pt - -% Now for the actual typesetting. In all these, #1 is the text and #2 is the -% page number. -% -% If the toc has to be broken over pages, we want it to be at chapters -% if at all possible; hence the \penalty. -\def\dochapentry#1#2{% - \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip - \begingroup - \chapentryfonts - \tocentry{#1}{\dopageno\bgroup#2\egroup}% - \endgroup - \nobreak\vskip .25\baselineskip plus.1\baselineskip -} - -\def\dosecentry#1#2{\begingroup - \secentryfonts \leftskip=\tocindent - \tocentry{#1}{\dopageno\bgroup#2\egroup}% -\endgroup} - -\def\dosubsecentry#1#2{\begingroup - \subsecentryfonts \leftskip=2\tocindent - \tocentry{#1}{\dopageno\bgroup#2\egroup}% -\endgroup} - -\def\dosubsubsecentry#1#2{\begingroup - \subsubsecentryfonts \leftskip=3\tocindent - \tocentry{#1}{\dopageno\bgroup#2\egroup}% -\endgroup} - -% We use the same \entry macro as for the index entries. -\let\tocentry = \entry - -% Space between chapter (or whatever) number and the title. -\def\labelspace{\hskip1em \relax} - -\def\dopageno#1{{\rm #1}} -\def\doshortpageno#1{{\rm #1}} - -\def\chapentryfonts{\secfonts \rm} -\def\secentryfonts{\textfonts} -\def\subsecentryfonts{\textfonts} -\def\subsubsecentryfonts{\textfonts} - - -\message{environments,} -% @foo ... @end foo. - -% @point{}, @result{}, @expansion{}, @print{}, @equiv{}. -% -% Since these characters are used in examples, it should be an even number of -% \tt widths. Each \tt character is 1en, so two makes it 1em. -% -\def\point{$\star$} -\def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}} -\def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}} -\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}} -\def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}} - -% The @error{} command. -% Adapted from the TeXbook's \boxit. -% -\newbox\errorbox -% -{\tentt \global\dimen0 = 3em}% Width of the box. -\dimen2 = .55pt % Thickness of rules -% The text. (`r' is open on the right, `e' somewhat less so on the left.) -\setbox0 = \hbox{\kern-.75pt \reducedsf error\kern-1.5pt} -% -\setbox\errorbox=\hbox to \dimen0{\hfil - \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right. - \advance\hsize by -2\dimen2 % Rules. - \vbox{% - \hrule height\dimen2 - \hbox{\vrule width\dimen2 \kern3pt % Space to left of text. - \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below. - \kern3pt\vrule width\dimen2}% Space to right. - \hrule height\dimen2} - \hfil} -% -\def\error{\leavevmode\lower.7ex\copy\errorbox} - -% @tex ... @end tex escapes into raw Tex temporarily. -% One exception: @ is still an escape character, so that @end tex works. -% But \@ or @@ will get a plain tex @ character. - -\envdef\tex{% - \catcode `\\=0 \catcode `\{=1 \catcode `\}=2 - \catcode `\$=3 \catcode `\&=4 \catcode `\#=6 - \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie - \catcode `\%=14 - \catcode `\+=\other - \catcode `\"=\other - \catcode `\|=\other - \catcode `\<=\other - \catcode `\>=\other - \escapechar=`\\ - % - \let\b=\ptexb - \let\bullet=\ptexbullet - \let\c=\ptexc - \let\,=\ptexcomma - \let\.=\ptexdot - \let\dots=\ptexdots - \let\equiv=\ptexequiv - \let\!=\ptexexclam - \let\i=\ptexi - \let\indent=\ptexindent - \let\noindent=\ptexnoindent - \let\{=\ptexlbrace - \let\+=\tabalign - \let\}=\ptexrbrace - \let\/=\ptexslash - \let\*=\ptexstar - \let\t=\ptext - \let\frenchspacing=\plainfrenchspacing - % - \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}% - \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}% - \def\@{@}% -} -% There is no need to define \Etex. - -% Define @lisp ... @end lisp. -% @lisp environment forms a group so it can rebind things, -% including the definition of @end lisp (which normally is erroneous). - -% Amount to narrow the margins by for @lisp. -\newskip\lispnarrowing \lispnarrowing=0.4in - -% This is the definition that ^^M gets inside @lisp, @example, and other -% such environments. \null is better than a space, since it doesn't -% have any width. -\def\lisppar{\null\endgraf} - -% This space is always present above and below environments. -\newskip\envskipamount \envskipamount = 0pt - -% Make spacing and below environment symmetrical. We use \parskip here -% to help in doing that, since in @example-like environments \parskip -% is reset to zero; thus the \afterenvbreak inserts no space -- but the -% start of the next paragraph will insert \parskip. -% -\def\aboveenvbreak{{% - % =10000 instead of <10000 because of a special case in \itemzzz and - % \sectionheading, q.v. - \ifnum \lastpenalty=10000 \else - \advance\envskipamount by \parskip - \endgraf - \ifdim\lastskip<\envskipamount - \removelastskip - % it's not a good place to break if the last penalty was \nobreak - % or better ... - \ifnum\lastpenalty<10000 \penalty-50 \fi - \vskip\envskipamount - \fi - \fi -}} - -\let\afterenvbreak = \aboveenvbreak - -% \nonarrowing is a flag. If "set", @lisp etc don't narrow margins; it will -% also clear it, so that its embedded environments do the narrowing again. -\let\nonarrowing=\relax - -% @cartouche ... @end cartouche: draw rectangle w/rounded corners around -% environment contents. -\font\circle=lcircle10 -\newdimen\circthick -\newdimen\cartouter\newdimen\cartinner -\newskip\normbskip\newskip\normpskip\newskip\normlskip -\circthick=\fontdimen8\circle -% -\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth -\def\ctr{{\hskip 6pt\circle\char'010}} -\def\cbl{{\circle\char'012\hskip -6pt}} -\def\cbr{{\hskip 6pt\circle\char'011}} -\def\carttop{\hbox to \cartouter{\hskip\lskip - \ctl\leaders\hrule height\circthick\hfil\ctr - \hskip\rskip}} -\def\cartbot{\hbox to \cartouter{\hskip\lskip - \cbl\leaders\hrule height\circthick\hfil\cbr - \hskip\rskip}} -% -\newskip\lskip\newskip\rskip - -\envdef\cartouche{% - \ifhmode\par\fi % can't be in the midst of a paragraph. - \startsavinginserts - \lskip=\leftskip \rskip=\rightskip - \leftskip=0pt\rightskip=0pt % we want these *outside*. - \cartinner=\hsize \advance\cartinner by-\lskip - \advance\cartinner by-\rskip - \cartouter=\hsize - \advance\cartouter by 18.4pt % allow for 3pt kerns on either - % side, and for 6pt waste from - % each corner char, and rule thickness - \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip - % Flag to tell @lisp, etc., not to narrow margin. - \let\nonarrowing = t% - \vbox\bgroup - \baselineskip=0pt\parskip=0pt\lineskip=0pt - \carttop - \hbox\bgroup - \hskip\lskip - \vrule\kern3pt - \vbox\bgroup - \kern3pt - \hsize=\cartinner - \baselineskip=\normbskip - \lineskip=\normlskip - \parskip=\normpskip - \vskip -\parskip - \comment % For explanation, see the end of \def\group. -} -\def\Ecartouche{% - \ifhmode\par\fi - \kern3pt - \egroup - \kern3pt\vrule - \hskip\rskip - \egroup - \cartbot - \egroup - \checkinserts -} - - -% This macro is called at the beginning of all the @example variants, -% inside a group. -\def\nonfillstart{% - \aboveenvbreak - \hfuzz = 12pt % Don't be fussy - \sepspaces % Make spaces be word-separators rather than space tokens. - \let\par = \lisppar % don't ignore blank lines - \obeylines % each line of input is a line of output - \parskip = 0pt - \parindent = 0pt - \emergencystretch = 0pt % don't try to avoid overfull boxes - \ifx\nonarrowing\relax - \advance \leftskip by \lispnarrowing - \exdentamount=\lispnarrowing - \else - \let\nonarrowing = \relax - \fi - \let\exdent=\nofillexdent -} - -% If you want all examples etc. small: @set dispenvsize small. -% If you want even small examples the full size: @set dispenvsize nosmall. -% This affects the following displayed environments: -% @example, @display, @format, @lisp -% -\def\smallword{small} -\def\nosmallword{nosmall} -\let\SETdispenvsize\relax -\def\setnormaldispenv{% - \ifx\SETdispenvsize\smallword - \smallexamplefonts \rm - \fi -} -\def\setsmalldispenv{% - \ifx\SETdispenvsize\nosmallword - \else - \smallexamplefonts \rm - \fi -} - -% We often define two environments, @foo and @smallfoo. -% Let's do it by one command: -\def\makedispenv #1#2{ - \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2} - \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2} - \expandafter\let\csname E#1\endcsname \afterenvbreak - \expandafter\let\csname Esmall#1\endcsname \afterenvbreak -} - -% Define two synonyms: -\def\maketwodispenvs #1#2#3{ - \makedispenv{#1}{#3} - \makedispenv{#2}{#3} -} - -% @lisp: indented, narrowed, typewriter font; @example: same as @lisp. -% -% @smallexample and @smalllisp: use smaller fonts. -% Originally contributed by Pavel@xerox. -% -\maketwodispenvs {lisp}{example}{% - \nonfillstart - \tt\quoteexpand - \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special. - \gobble % eat return -} -% @display/@smalldisplay: same as @lisp except keep current font. -% -\makedispenv {display}{% - \nonfillstart - \gobble -} - -% @format/@smallformat: same as @display except don't narrow margins. -% -\makedispenv{format}{% - \let\nonarrowing = t% - \nonfillstart - \gobble -} - -% @flushleft: same as @format, but doesn't obey \SETdispenvsize. -\envdef\flushleft{% - \let\nonarrowing = t% - \nonfillstart - \gobble -} -\let\Eflushleft = \afterenvbreak - -% @flushright. -% -\envdef\flushright{% - \let\nonarrowing = t% - \nonfillstart - \advance\leftskip by 0pt plus 1fill - \gobble -} -\let\Eflushright = \afterenvbreak - - -% @quotation does normal linebreaking (hence we can't use \nonfillstart) -% and narrows the margins. We keep \parskip nonzero in general, since -% we're doing normal filling. So, when using \aboveenvbreak and -% \afterenvbreak, temporarily make \parskip 0. -% -\envdef\quotation{% - {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip - \parindent=0pt - % - % @cartouche defines \nonarrowing to inhibit narrowing at next level down. - \ifx\nonarrowing\relax - \advance\leftskip by \lispnarrowing - \advance\rightskip by \lispnarrowing - \exdentamount = \lispnarrowing - \else - \let\nonarrowing = \relax - \fi - \parsearg\quotationlabel -} - -% We have retained a nonzero parskip for the environment, since we're -% doing normal filling. -% -\def\Equotation{% - \par - \ifx\quotationauthor\undefined\else - % indent a bit. - \leftline{\kern 2\leftskip \sl ---\quotationauthor}% - \fi - {\parskip=0pt \afterenvbreak}% -} - -% If we're given an argument, typeset it in bold with a colon after. -\def\quotationlabel#1{% - \def\temp{#1}% - \ifx\temp\empty \else - {\bf #1: }% - \fi -} - - -% LaTeX-like @verbatim...@end verbatim and @verb{...} -% If we want to allow any as delimiter, -% we need the curly braces so that makeinfo sees the @verb command, eg: -% `@verbx...x' would look like the '@verbx' command. --janneke@gnu.org -% -% [Knuth]: Donald Ervin Knuth, 1996. The TeXbook. -% -% [Knuth] p.344; only we need to do the other characters Texinfo sets -% active too. Otherwise, they get lost as the first character on a -% verbatim line. -\def\dospecials{% - \do\ \do\\\do\{\do\}\do\$\do\&% - \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~% - \do\<\do\>\do\|\do\@\do+\do\"% -} -% -% [Knuth] p. 380 -\def\uncatcodespecials{% - \def\do##1{\catcode`##1=\other}\dospecials} -% -% [Knuth] pp. 380,381,391 -% Disable Spanish ligatures ?` and !` of \tt font -\begingroup - \catcode`\`=\active\gdef`{\relax\lq} -\endgroup -% -% Setup for the @verb command. -% -% Eight spaces for a tab -\begingroup - \catcode`\^^I=\active - \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }} -\endgroup -% -\def\setupverb{% - \tt % easiest (and conventionally used) font for verbatim - \def\par{\leavevmode\endgraf}% - \catcode`\`=\active - \tabeightspaces - % Respect line breaks, - % print special symbols as themselves, and - % make each space count - % must do in this order: - \obeylines \uncatcodespecials \sepspaces -} - -% Setup for the @verbatim environment -% -% Real tab expansion -\newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount -% -\def\starttabbox{\setbox0=\hbox\bgroup} - -% Allow an option to not replace quotes with a regular directed right -% quote/apostrophe (char 0x27), but instead use the undirected quote -% from cmtt (char 0x0d). The undirected quote is ugly, so don't make it -% the default, but it works for pasting with more pdf viewers (at least -% evince), the lilypond developers report. xpdf does work with the -% regular 0x27. -% -\def\codequoteright{% - \expandafter\ifx\csname SETcodequoteundirected\endcsname\relax - '% - \else - \char'15 - \fi -} -% -% and a similar option for the left quote char vs. a grave accent. -% Modern fonts display ASCII 0x60 as a grave accent, so some people like -% the code environments to do likewise. -% -\def\codequoteleft{% - \expandafter\ifx\csname SETcodequotebacktick\endcsname\relax - `% - \else - \char'22 - \fi -} -% -\begingroup - \catcode`\^^I=\active - \gdef\tabexpand{% - \catcode`\^^I=\active - \def^^I{\leavevmode\egroup - \dimen0=\wd0 % the width so far, or since the previous tab - \divide\dimen0 by\tabw - \multiply\dimen0 by\tabw % compute previous multiple of \tabw - \advance\dimen0 by\tabw % advance to next multiple of \tabw - \wd0=\dimen0 \box0 \starttabbox - }% - } - \catcode`\'=\active - \gdef\rquoteexpand{\catcode\rquoteChar=\active \def'{\codequoteright}}% - % - \catcode`\`=\active - \gdef\lquoteexpand{\catcode\lquoteChar=\active \def`{\codequoteleft}}% - % - \gdef\quoteexpand{\rquoteexpand \lquoteexpand}% -\endgroup - -% start the verbatim environment. -\def\setupverbatim{% - \let\nonarrowing = t% - \nonfillstart - % Easiest (and conventionally used) font for verbatim - \tt - \def\par{\leavevmode\egroup\box0\endgraf}% - \catcode`\`=\active - \tabexpand - \quoteexpand - % Respect line breaks, - % print special symbols as themselves, and - % make each space count - % must do in this order: - \obeylines \uncatcodespecials \sepspaces - \everypar{\starttabbox}% -} - -% Do the @verb magic: verbatim text is quoted by unique -% delimiter characters. Before first delimiter expect a -% right brace, after last delimiter expect closing brace: -% -% \def\doverb'{'#1'}'{#1} -% -% [Knuth] p. 382; only eat outer {} -\begingroup - \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other - \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next] -\endgroup -% -\def\verb{\begingroup\setupverb\doverb} -% -% -% Do the @verbatim magic: define the macro \doverbatim so that -% the (first) argument ends when '@end verbatim' is reached, ie: -% -% \def\doverbatim#1@end verbatim{#1} -% -% For Texinfo it's a lot easier than for LaTeX, -% because texinfo's \verbatim doesn't stop at '\end{verbatim}': -% we need not redefine '\', '{' and '}'. -% -% Inspired by LaTeX's verbatim command set [latex.ltx] -% -\begingroup - \catcode`\ =\active - \obeylines % - % ignore everything up to the first ^^M, that's the newline at the end - % of the @verbatim input line itself. Otherwise we get an extra blank - % line in the output. - \xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}% - % We really want {...\end verbatim} in the body of the macro, but - % without the active space; thus we have to use \xdef and \gobble. -\endgroup -% -\envdef\verbatim{% - \setupverbatim\doverbatim -} -\let\Everbatim = \afterenvbreak - - -% @verbatiminclude FILE - insert text of file in verbatim environment. -% -\def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude} -% -\def\doverbatiminclude#1{% - {% - \makevalueexpandable - \setupverbatim - \input #1 - \afterenvbreak - }% -} - -% @copying ... @end copying. -% Save the text away for @insertcopying later. -% -% We save the uninterpreted tokens, rather than creating a box. -% Saving the text in a box would be much easier, but then all the -% typesetting commands (@smallbook, font changes, etc.) have to be done -% beforehand -- and a) we want @copying to be done first in the source -% file; b) letting users define the frontmatter in as flexible order as -% possible is very desirable. -% -\def\copying{\checkenv{}\begingroup\scanargctxt\docopying} -\def\docopying#1@end copying{\endgroup\def\copyingtext{#1}} -% -\def\insertcopying{% - \begingroup - \parindent = 0pt % paragraph indentation looks wrong on title page - \scanexp\copyingtext - \endgroup -} - -\message{defuns,} -% @defun etc. - -\newskip\defbodyindent \defbodyindent=.4in -\newskip\defargsindent \defargsindent=50pt -\newskip\deflastargmargin \deflastargmargin=18pt - -% Start the processing of @deffn: -\def\startdefun{% - \ifnum\lastpenalty<10000 - \medbreak - \else - % If there are two @def commands in a row, we'll have a \nobreak, - % which is there to keep the function description together with its - % header. But if there's nothing but headers, we need to allow a - % break somewhere. Check specifically for penalty 10002, inserted - % by \defargscommonending, instead of 10000, since the sectioning - % commands also insert a nobreak penalty, and we don't want to allow - % a break between a section heading and a defun. - % - \ifnum\lastpenalty=10002 \penalty2000 \fi - % - % Similarly, after a section heading, do not allow a break. - % But do insert the glue. - \medskip % preceded by discardable penalty, so not a breakpoint - \fi - % - \parindent=0in - \advance\leftskip by \defbodyindent - \exdentamount=\defbodyindent -} - -\def\dodefunx#1{% - % First, check whether we are in the right environment: - \checkenv#1% - % - % As above, allow line break if we have multiple x headers in a row. - % It's not a great place, though. - \ifnum\lastpenalty=10002 \penalty3000 \fi - % - % And now, it's time to reuse the body of the original defun: - \expandafter\gobbledefun#1% -} -\def\gobbledefun#1\startdefun{} - -% \printdefunline \deffnheader{text} -% -\def\printdefunline#1#2{% - \begingroup - % call \deffnheader: - #1#2 \endheader - % common ending: - \interlinepenalty = 10000 - \advance\rightskip by 0pt plus 1fil - \endgraf - \nobreak\vskip -\parskip - \penalty 10002 % signal to \startdefun and \dodefunx - % Some of the @defun-type tags do not enable magic parentheses, - % rendering the following check redundant. But we don't optimize. - \checkparencounts - \endgroup -} - -\def\Edefun{\endgraf\medbreak} - -% \makedefun{deffn} creates \deffn, \deffnx and \Edeffn; -% the only thing remainnig is to define \deffnheader. -% -\def\makedefun#1{% - \expandafter\let\csname E#1\endcsname = \Edefun - \edef\temp{\noexpand\domakedefun - \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}% - \temp -} - -% \domakedefun \deffn \deffnx \deffnheader -% -% Define \deffn and \deffnx, without parameters. -% \deffnheader has to be defined explicitly. -% -\def\domakedefun#1#2#3{% - \envdef#1{% - \startdefun - \parseargusing\activeparens{\printdefunline#3}% - }% - \def#2{\dodefunx#1}% - \def#3% -} - -%%% Untyped functions: - -% @deffn category name args -\makedefun{deffn}{\deffngeneral{}} - -% @deffn category class name args -\makedefun{defop}#1 {\defopon{#1\ \putwordon}} - -% \defopon {category on}class name args -\def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} } - -% \deffngeneral {subind}category name args -% -\def\deffngeneral#1#2 #3 #4\endheader{% - % Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}. - \dosubind{fn}{\code{#3}}{#1}% - \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}% -} - -%%% Typed functions: - -% @deftypefn category type name args -\makedefun{deftypefn}{\deftypefngeneral{}} - -% @deftypeop category class type name args -\makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}} - -% \deftypeopon {category on}class type name args -\def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} } - -% \deftypefngeneral {subind}category type name args -% -\def\deftypefngeneral#1#2 #3 #4 #5\endheader{% - \dosubind{fn}{\code{#4}}{#1}% - \defname{#2}{#3}{#4}\defunargs{#5\unskip}% -} - -%%% Typed variables: - -% @deftypevr category type var args -\makedefun{deftypevr}{\deftypecvgeneral{}} - -% @deftypecv category class type var args -\makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}} - -% \deftypecvof {category of}class type var args -\def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} } - -% \deftypecvgeneral {subind}category type var args -% -\def\deftypecvgeneral#1#2 #3 #4 #5\endheader{% - \dosubind{vr}{\code{#4}}{#1}% - \defname{#2}{#3}{#4}\defunargs{#5\unskip}% -} - -%%% Untyped variables: - -% @defvr category var args -\makedefun{defvr}#1 {\deftypevrheader{#1} {} } - -% @defcv category class var args -\makedefun{defcv}#1 {\defcvof{#1\ \putwordof}} - -% \defcvof {category of}class var args -\def\defcvof#1#2 {\deftypecvof{#1}#2 {} } - -%%% Type: -% @deftp category name args -\makedefun{deftp}#1 #2 #3\endheader{% - \doind{tp}{\code{#2}}% - \defname{#1}{}{#2}\defunargs{#3\unskip}% -} - -% Remaining @defun-like shortcuts: -\makedefun{defun}{\deffnheader{\putwordDeffunc} } -\makedefun{defmac}{\deffnheader{\putwordDefmac} } -\makedefun{defspec}{\deffnheader{\putwordDefspec} } -\makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} } -\makedefun{defvar}{\defvrheader{\putwordDefvar} } -\makedefun{defopt}{\defvrheader{\putwordDefopt} } -\makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} } -\makedefun{defmethod}{\defopon\putwordMethodon} -\makedefun{deftypemethod}{\deftypeopon\putwordMethodon} -\makedefun{defivar}{\defcvof\putwordInstanceVariableof} -\makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof} - -% \defname, which formats the name of the @def (not the args). -% #1 is the category, such as "Function". -% #2 is the return type, if any. -% #3 is the function name. -% -% We are followed by (but not passed) the arguments, if any. -% -\def\defname#1#2#3{% - % Get the values of \leftskip and \rightskip as they were outside the @def... - \advance\leftskip by -\defbodyindent - % - % How we'll format the type name. Putting it in brackets helps - % distinguish it from the body text that may end up on the next line - % just below it. - \def\temp{#1}% - \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi} - % - % Figure out line sizes for the paragraph shape. - % The first line needs space for \box0; but if \rightskip is nonzero, - % we need only space for the part of \box0 which exceeds it: - \dimen0=\hsize \advance\dimen0 by -\wd0 \advance\dimen0 by \rightskip - % The continuations: - \dimen2=\hsize \advance\dimen2 by -\defargsindent - % (plain.tex says that \dimen1 should be used only as global.) - \parshape 2 0in \dimen0 \defargsindent \dimen2 - % - % Put the type name to the right margin. - \noindent - \hbox to 0pt{% - \hfil\box0 \kern-\hsize - % \hsize has to be shortened this way: - \kern\leftskip - % Intentionally do not respect \rightskip, since we need the space. - }% - % - % Allow all lines to be underfull without complaint: - \tolerance=10000 \hbadness=10000 - \exdentamount=\defbodyindent - {% - % defun fonts. We use typewriter by default (used to be bold) because: - % . we're printing identifiers, they should be in tt in principle. - % . in languages with many accents, such as Czech or French, it's - % common to leave accents off identifiers. The result looks ok in - % tt, but exceedingly strange in rm. - % . we don't want -- and --- to be treated as ligatures. - % . this still does not fix the ?` and !` ligatures, but so far no - % one has made identifiers using them :). - \df \tt - \def\temp{#2}% return value type - \ifx\temp\empty\else \tclose{\temp} \fi - #3% output function name - }% - {\rm\enskip}% hskip 0.5 em of \tenrm - % - \boldbrax - % arguments will be output next, if any. -} - -% Print arguments in slanted roman (not ttsl), inconsistently with using -% tt for the name. This is because literal text is sometimes needed in -% the argument list (groff manual), and ttsl and tt are not very -% distinguishable. Prevent hyphenation at `-' chars. -% -\def\defunargs#1{% - % use sl by default (not ttsl), - % tt for the names. - \df \sl \hyphenchar\font=0 - % - % On the other hand, if an argument has two dashes (for instance), we - % want a way to get ttsl. Let's try @var for that. - \let\var=\ttslanted - #1% - \sl\hyphenchar\font=45 -} - -% We want ()&[] to print specially on the defun line. -% -\def\activeparens{% - \catcode`\(=\active \catcode`\)=\active - \catcode`\[=\active \catcode`\]=\active - \catcode`\&=\active -} - -% Make control sequences which act like normal parenthesis chars. -\let\lparen = ( \let\rparen = ) - -% Be sure that we always have a definition for `(', etc. For example, -% if the fn name has parens in it, \boldbrax will not be in effect yet, -% so TeX would otherwise complain about undefined control sequence. -{ - \activeparens - \global\let(=\lparen \global\let)=\rparen - \global\let[=\lbrack \global\let]=\rbrack - \global\let& = \& - - \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb} - \gdef\magicamp{\let&=\amprm} -} - -\newcount\parencount - -% If we encounter &foo, then turn on ()-hacking afterwards -\newif\ifampseen -\def\amprm#1 {\ampseentrue{\bf\ }} - -\def\parenfont{% - \ifampseen - % At the first level, print parens in roman, - % otherwise use the default font. - \ifnum \parencount=1 \rm \fi - \else - % The \sf parens (in \boldbrax) actually are a little bolder than - % the contained text. This is especially needed for [ and ] . - \sf - \fi -} -\def\infirstlevel#1{% - \ifampseen - \ifnum\parencount=1 - #1% - \fi - \fi -} -\def\bfafterword#1 {#1 \bf} - -\def\opnr{% - \global\advance\parencount by 1 - {\parenfont(}% - \infirstlevel \bfafterword -} -\def\clnr{% - {\parenfont)}% - \infirstlevel \sl - \global\advance\parencount by -1 -} - -\newcount\brackcount -\def\lbrb{% - \global\advance\brackcount by 1 - {\bf[}% -} -\def\rbrb{% - {\bf]}% - \global\advance\brackcount by -1 -} - -\def\checkparencounts{% - \ifnum\parencount=0 \else \badparencount \fi - \ifnum\brackcount=0 \else \badbrackcount \fi -} -\def\badparencount{% - \errmessage{Unbalanced parentheses in @def}% - \global\parencount=0 -} -\def\badbrackcount{% - \errmessage{Unbalanced square braces in @def}% - \global\brackcount=0 -} - - -\message{macros,} -% @macro. - -% To do this right we need a feature of e-TeX, \scantokens, -% which we arrange to emulate with a temporary file in ordinary TeX. -\ifx\eTeXversion\undefined - \newwrite\macscribble - \def\scantokens#1{% - \toks0={#1}% - \immediate\openout\macscribble=\jobname.tmp - \immediate\write\macscribble{\the\toks0}% - \immediate\closeout\macscribble - \input \jobname.tmp - } -\fi - -\def\scanmacro#1{% - \begingroup - \newlinechar`\^^M - \let\xeatspaces\eatspaces - % Undo catcode changes of \startcontents and \doprintindex - % When called from @insertcopying or (short)caption, we need active - % backslash to get it printed correctly. Previously, we had - % \catcode`\\=\other instead. We'll see whether a problem appears - % with macro expansion. --kasal, 19aug04 - \catcode`\@=0 \catcode`\\=\active \escapechar=`\@ - % ... and \example - \spaceisspace - % - % Append \endinput to make sure that TeX does not see the ending newline. - % I've verified that it is necessary both for e-TeX and for ordinary TeX - % --kasal, 29nov03 - \scantokens{#1\endinput}% - \endgroup -} - -\def\scanexp#1{% - \edef\temp{\noexpand\scanmacro{#1}}% - \temp -} - -\newcount\paramno % Count of parameters -\newtoks\macname % Macro name -\newif\ifrecursive % Is it recursive? - -% List of all defined macros in the form -% \definedummyword\macro1\definedummyword\macro2... -% Currently is also contains all @aliases; the list can be split -% if there is a need. -\def\macrolist{} - -% Add the macro to \macrolist -\def\addtomacrolist#1{\expandafter \addtomacrolistxxx \csname#1\endcsname} -\def\addtomacrolistxxx#1{% - \toks0 = \expandafter{\macrolist\definedummyword#1}% - \xdef\macrolist{\the\toks0}% -} - -% Utility routines. -% This does \let #1 = #2, with \csnames; that is, -% \let \csname#1\endcsname = \csname#2\endcsname -% (except of course we have to play expansion games). -% -\def\cslet#1#2{% - \expandafter\let - \csname#1\expandafter\endcsname - \csname#2\endcsname -} - -% Trim leading and trailing spaces off a string. -% Concepts from aro-bend problem 15 (see CTAN). -{\catcode`\@=11 -\gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }} -\gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@} -\gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @} -\def\unbrace#1{#1} -\unbrace{\gdef\trim@@@ #1 } #2@{#1} -} - -% Trim a single trailing ^^M off a string. -{\catcode`\^^M=\other \catcode`\Q=3% -\gdef\eatcr #1{\eatcra #1Q^^MQ}% -\gdef\eatcra#1^^MQ{\eatcrb#1Q}% -\gdef\eatcrb#1Q#2Q{#1}% -} - -% Macro bodies are absorbed as an argument in a context where -% all characters are catcode 10, 11 or 12, except \ which is active -% (as in normal texinfo). It is necessary to change the definition of \. - -% It's necessary to have hard CRs when the macro is executed. This is -% done by making ^^M (\endlinechar) catcode 12 when reading the macro -% body, and then making it the \newlinechar in \scanmacro. - -\def\scanctxt{% - \catcode`\"=\other - \catcode`\+=\other - \catcode`\<=\other - \catcode`\>=\other - \catcode`\@=\other - \catcode`\^=\other - \catcode`\_=\other - \catcode`\|=\other - \catcode`\~=\other -} - -\def\scanargctxt{% - \scanctxt - \catcode`\\=\other - \catcode`\^^M=\other -} - -\def\macrobodyctxt{% - \scanctxt - \catcode`\{=\other - \catcode`\}=\other - \catcode`\^^M=\other - \usembodybackslash -} - -\def\macroargctxt{% - \scanctxt - \catcode`\\=\other -} - -% \mbodybackslash is the definition of \ in @macro bodies. -% It maps \foo\ => \csname macarg.foo\endcsname => #N -% where N is the macro parameter number. -% We define \csname macarg.\endcsname to be \realbackslash, so -% \\ in macro replacement text gets you a backslash. - -{\catcode`@=0 @catcode`@\=@active - @gdef@usembodybackslash{@let\=@mbodybackslash} - @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname} -} -\expandafter\def\csname macarg.\endcsname{\realbackslash} - -\def\macro{\recursivefalse\parsearg\macroxxx} -\def\rmacro{\recursivetrue\parsearg\macroxxx} - -\def\macroxxx#1{% - \getargs{#1}% now \macname is the macname and \argl the arglist - \ifx\argl\empty % no arguments - \paramno=0% - \else - \expandafter\parsemargdef \argl;% - \fi - \if1\csname ismacro.\the\macname\endcsname - \message{Warning: redefining \the\macname}% - \else - \expandafter\ifx\csname \the\macname\endcsname \relax - \else \errmessage{Macro name \the\macname\space already defined}\fi - \global\cslet{macsave.\the\macname}{\the\macname}% - \global\expandafter\let\csname ismacro.\the\macname\endcsname=1% - \addtomacrolist{\the\macname}% - \fi - \begingroup \macrobodyctxt - \ifrecursive \expandafter\parsermacbody - \else \expandafter\parsemacbody - \fi} - -\parseargdef\unmacro{% - \if1\csname ismacro.#1\endcsname - \global\cslet{#1}{macsave.#1}% - \global\expandafter\let \csname ismacro.#1\endcsname=0% - % Remove the macro name from \macrolist: - \begingroup - \expandafter\let\csname#1\endcsname \relax - \let\definedummyword\unmacrodo - \xdef\macrolist{\macrolist}% - \endgroup - \else - \errmessage{Macro #1 not defined}% - \fi -} - -% Called by \do from \dounmacro on each macro. The idea is to omit any -% macro definitions that have been changed to \relax. -% -\def\unmacrodo#1{% - \ifx #1\relax - % remove this - \else - \noexpand\definedummyword \noexpand#1% - \fi -} - -% This makes use of the obscure feature that if the last token of a -% is #, then the preceding argument is delimited by -% an opening brace, and that opening brace is not consumed. -\def\getargs#1{\getargsxxx#1{}} -\def\getargsxxx#1#{\getmacname #1 \relax\getmacargs} -\def\getmacname #1 #2\relax{\macname={#1}} -\def\getmacargs#1{\def\argl{#1}} - -% Parse the optional {params} list. Set up \paramno and \paramlist -% so \defmacro knows what to do. Define \macarg.blah for each blah -% in the params list, to be ##N where N is the position in that list. -% That gets used by \mbodybackslash (above). - -% We need to get `macro parameter char #' into several definitions. -% The technique used is stolen from LaTeX: let \hash be something -% unexpandable, insert that wherever you need a #, and then redefine -% it to # just before using the token list produced. -% -% The same technique is used to protect \eatspaces till just before -% the macro is used. - -\def\parsemargdef#1;{\paramno=0\def\paramlist{}% - \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,} -\def\parsemargdefxxx#1,{% - \if#1;\let\next=\relax - \else \let\next=\parsemargdefxxx - \advance\paramno by 1% - \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname - {\xeatspaces{\hash\the\paramno}}% - \edef\paramlist{\paramlist\hash\the\paramno,}% - \fi\next} - -% These two commands read recursive and nonrecursive macro bodies. -% (They're different since rec and nonrec macros end differently.) - -\long\def\parsemacbody#1@end macro% -{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}% -\long\def\parsermacbody#1@end rmacro% -{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}% - -% This defines the macro itself. There are six cases: recursive and -% nonrecursive macros of zero, one, and many arguments. -% Much magic with \expandafter here. -% \xdef is used so that macro definitions will survive the file -% they're defined in; @include reads the file inside a group. -\def\defmacro{% - \let\hash=##% convert placeholders to macro parameter chars - \ifrecursive - \ifcase\paramno - % 0 - \expandafter\xdef\csname\the\macname\endcsname{% - \noexpand\scanmacro{\temp}}% - \or % 1 - \expandafter\xdef\csname\the\macname\endcsname{% - \bgroup\noexpand\macroargctxt - \noexpand\braceorline - \expandafter\noexpand\csname\the\macname xxx\endcsname}% - \expandafter\xdef\csname\the\macname xxx\endcsname##1{% - \egroup\noexpand\scanmacro{\temp}}% - \else % many - \expandafter\xdef\csname\the\macname\endcsname{% - \bgroup\noexpand\macroargctxt - \noexpand\csname\the\macname xx\endcsname}% - \expandafter\xdef\csname\the\macname xx\endcsname##1{% - \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}% - \expandafter\expandafter - \expandafter\xdef - \expandafter\expandafter - \csname\the\macname xxx\endcsname - \paramlist{\egroup\noexpand\scanmacro{\temp}}% - \fi - \else - \ifcase\paramno - % 0 - \expandafter\xdef\csname\the\macname\endcsname{% - \noexpand\norecurse{\the\macname}% - \noexpand\scanmacro{\temp}\egroup}% - \or % 1 - \expandafter\xdef\csname\the\macname\endcsname{% - \bgroup\noexpand\macroargctxt - \noexpand\braceorline - \expandafter\noexpand\csname\the\macname xxx\endcsname}% - \expandafter\xdef\csname\the\macname xxx\endcsname##1{% - \egroup - \noexpand\norecurse{\the\macname}% - \noexpand\scanmacro{\temp}\egroup}% - \else % many - \expandafter\xdef\csname\the\macname\endcsname{% - \bgroup\noexpand\macroargctxt - \expandafter\noexpand\csname\the\macname xx\endcsname}% - \expandafter\xdef\csname\the\macname xx\endcsname##1{% - \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}% - \expandafter\expandafter - \expandafter\xdef - \expandafter\expandafter - \csname\the\macname xxx\endcsname - \paramlist{% - \egroup - \noexpand\norecurse{\the\macname}% - \noexpand\scanmacro{\temp}\egroup}% - \fi - \fi} - -\def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}} - -% \braceorline decides whether the next nonwhitespace character is a -% {. If so it reads up to the closing }, if not, it reads the whole -% line. Whatever was read is then fed to the next control sequence -% as an argument (by \parsebrace or \parsearg) -\def\braceorline#1{\let\macnamexxx=#1\futurelet\nchar\braceorlinexxx} -\def\braceorlinexxx{% - \ifx\nchar\bgroup\else - \expandafter\parsearg - \fi \macnamexxx} - - -% @alias. -% We need some trickery to remove the optional spaces around the equal -% sign. Just make them active and then expand them all to nothing. -\def\alias{\parseargusing\obeyspaces\aliasxxx} -\def\aliasxxx #1{\aliasyyy#1\relax} -\def\aliasyyy #1=#2\relax{% - {% - \expandafter\let\obeyedspace=\empty - \addtomacrolist{#1}% - \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}% - }% - \next -} - - -\message{cross references,} - -\newwrite\auxfile - -\newif\ifhavexrefs % True if xref values are known. -\newif\ifwarnedxrefs % True if we warned once that they aren't known. - -% @inforef is relatively simple. -\def\inforef #1{\inforefzzz #1,,,,**} -\def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}}, - node \samp{\ignorespaces#1{}}} - -% @node's only job in TeX is to define \lastnode, which is used in -% cross-references. The @node line might or might not have commas, and -% might or might not have spaces before the first comma, like: -% @node foo , bar , ... -% We don't want such trailing spaces in the node name. -% -\parseargdef\node{\checkenv{}\donode #1 ,\finishnodeparse} -% -% also remove a trailing comma, in case of something like this: -% @node Help-Cross, , , Cross-refs -\def\donode#1 ,#2\finishnodeparse{\dodonode #1,\finishnodeparse} -\def\dodonode#1,#2\finishnodeparse{\gdef\lastnode{#1}} - -\let\nwnode=\node -\let\lastnode=\empty - -% Write a cross-reference definition for the current node. #1 is the -% type (Ynumbered, Yappendix, Ynothing). -% -\def\donoderef#1{% - \ifx\lastnode\empty\else - \setref{\lastnode}{#1}% - \global\let\lastnode=\empty - \fi -} - -% @anchor{NAME} -- define xref target at arbitrary point. -% -\newcount\savesfregister -% -\def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi} -\def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi} -\def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces} - -% \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an -% anchor), which consists of three parts: -% 1) NAME-title - the current sectioning name taken from \thissection, -% or the anchor name. -% 2) NAME-snt - section number and type, passed as the SNT arg, or -% empty for anchors. -% 3) NAME-pg - the page number. -% -% This is called from \donoderef, \anchor, and \dofloat. In the case of -% floats, there is an additional part, which is not written here: -% 4) NAME-lof - the text as it should appear in a @listoffloats. -% -\def\setref#1#2{% - \pdfmkdest{#1}% - \iflinks - {% - \atdummies % preserve commands, but don't expand them - \edef\writexrdef##1##2{% - \write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef - ##1}{##2}}% these are parameters of \writexrdef - }% - \toks0 = \expandafter{\thissection}% - \immediate \writexrdef{title}{\the\toks0 }% - \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc. - \writexrdef{pg}{\folio}% will be written later, during \shipout - }% - \fi -} - -% @xref, @pxref, and @ref generate cross-references. For \xrefX, #1 is -% the node name, #2 the name of the Info cross-reference, #3 the printed -% node name, #4 the name of the Info file, #5 the name of the printed -% manual. All but the node name can be omitted. -% -\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]} -\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]} -\def\ref#1{\xrefX[#1,,,,,,,]} -\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup - \unsepspaces - \def\printedmanual{\ignorespaces #5}% - \def\printedrefname{\ignorespaces #3}% - \setbox1=\hbox{\printedmanual\unskip}% - \setbox0=\hbox{\printedrefname\unskip}% - \ifdim \wd0 = 0pt - % No printed node name was explicitly given. - \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax - % Use the node name inside the square brackets. - \def\printedrefname{\ignorespaces #1}% - \else - % Use the actual chapter/section title appear inside - % the square brackets. Use the real section title if we have it. - \ifdim \wd1 > 0pt - % It is in another manual, so we don't have it. - \def\printedrefname{\ignorespaces #1}% - \else - \ifhavexrefs - % We know the real title if we have the xref values. - \def\printedrefname{\refx{#1-title}{}}% - \else - % Otherwise just copy the Info node name. - \def\printedrefname{\ignorespaces #1}% - \fi% - \fi - \fi - \fi - % - % Make link in pdf output. - \ifpdf - \leavevmode - \getfilename{#4}% - {\turnoffactive - % See comments at \activebackslashdouble. - {\activebackslashdouble \xdef\pdfxrefdest{#1}% - \backslashparens\pdfxrefdest}% - % - \ifnum\filenamelength>0 - \startlink attr{/Border [0 0 0]}% - goto file{\the\filename.pdf} name{\pdfxrefdest}% - \else - \startlink attr{/Border [0 0 0]}% - goto name{\pdfmkpgn{\pdfxrefdest}}% - \fi - }% - \linkcolor - \fi - % - % Float references are printed completely differently: "Figure 1.2" - % instead of "[somenode], p.3". We distinguish them by the - % LABEL-title being set to a magic string. - {% - % Have to otherify everything special to allow the \csname to - % include an _ in the xref name, etc. - \indexnofonts - \turnoffactive - \expandafter\global\expandafter\let\expandafter\Xthisreftitle - \csname XR#1-title\endcsname - }% - \iffloat\Xthisreftitle - % If the user specified the print name (third arg) to the ref, - % print it instead of our usual "Figure 1.2". - \ifdim\wd0 = 0pt - \refx{#1-snt}{}% - \else - \printedrefname - \fi - % - % if the user also gave the printed manual name (fifth arg), append - % "in MANUALNAME". - \ifdim \wd1 > 0pt - \space \putwordin{} \cite{\printedmanual}% - \fi - \else - % node/anchor (non-float) references. - % - % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not - % insert empty discretionaries after hyphens, which means that it will - % not find a line break at a hyphen in a node names. Since some manuals - % are best written with fairly long node names, containing hyphens, this - % is a loss. Therefore, we give the text of the node name again, so it - % is as if TeX is seeing it for the first time. - \ifdim \wd1 > 0pt - \putwordsection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}% - \else - % _ (for example) has to be the character _ for the purposes of the - % control sequence corresponding to the node, but it has to expand - % into the usual \leavevmode...\vrule stuff for purposes of - % printing. So we \turnoffactive for the \refx-snt, back on for the - % printing, back off for the \refx-pg. - {\turnoffactive - % Only output a following space if the -snt ref is nonempty; for - % @unnumbered and @anchor, it won't be. - \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}% - \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi - }% - % output the `[mynode]' via a macro so it can be overridden. - \xrefprintnodename\printedrefname - % - % But we always want a comma and a space: - ,\space - % - % output the `page 3'. - \turnoffactive \putwordpage\tie\refx{#1-pg}{}% - \fi - \fi - \endlink -\endgroup} - -% This macro is called from \xrefX for the `[nodename]' part of xref -% output. It's a separate macro only so it can be changed more easily, -% since square brackets don't work well in some documents. Particularly -% one that Bob is working on :). -% -\def\xrefprintnodename#1{[#1]} - -% Things referred to by \setref. -% -\def\Ynothing{} -\def\Yomitfromtoc{} -\def\Ynumbered{% - \ifnum\secno=0 - \putwordChapter@tie \the\chapno - \else \ifnum\subsecno=0 - \putwordSection@tie \the\chapno.\the\secno - \else \ifnum\subsubsecno=0 - \putwordSection@tie \the\chapno.\the\secno.\the\subsecno - \else - \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno - \fi\fi\fi -} -\def\Yappendix{% - \ifnum\secno=0 - \putwordAppendix@tie @char\the\appendixno{}% - \else \ifnum\subsecno=0 - \putwordSection@tie @char\the\appendixno.\the\secno - \else \ifnum\subsubsecno=0 - \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno - \else - \putwordSection@tie - @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno - \fi\fi\fi -} - -% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME. -% If its value is nonempty, SUFFIX is output afterward. -% -\def\refx#1#2{% - {% - \indexnofonts - \otherbackslash - \expandafter\global\expandafter\let\expandafter\thisrefX - \csname XR#1\endcsname - }% - \ifx\thisrefX\relax - % If not defined, say something at least. - \angleleft un\-de\-fined\angleright - \iflinks - \ifhavexrefs - \message{\linenumber Undefined cross reference `#1'.}% - \else - \ifwarnedxrefs\else - \global\warnedxrefstrue - \message{Cross reference values unknown; you must run TeX again.}% - \fi - \fi - \fi - \else - % It's defined, so just use it. - \thisrefX - \fi - #2% Output the suffix in any case. -} - -% This is the macro invoked by entries in the aux file. Usually it's -% just a \def (we prepend XR to the control sequence name to avoid -% collisions). But if this is a float type, we have more work to do. -% -\def\xrdef#1#2{% - \expandafter\gdef\csname XR#1\endcsname{#2}% remember this xref value. - % - % Was that xref control sequence that we just defined for a float? - \expandafter\iffloat\csname XR#1\endcsname - % it was a float, and we have the (safe) float type in \iffloattype. - \expandafter\let\expandafter\floatlist - \csname floatlist\iffloattype\endcsname - % - % Is this the first time we've seen this float type? - \expandafter\ifx\floatlist\relax - \toks0 = {\do}% yes, so just \do - \else - % had it before, so preserve previous elements in list. - \toks0 = \expandafter{\floatlist\do}% - \fi - % - % Remember this xref in the control sequence \floatlistFLOATTYPE, - % for later use in \listoffloats. - \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0{#1}}% - \fi -} - -% Read the last existing aux file, if any. No error if none exists. -% -\def\tryauxfile{% - \openin 1 \jobname.aux - \ifeof 1 \else - \readdatafile{aux}% - \global\havexrefstrue - \fi - \closein 1 -} - -\def\setupdatafile{% - \catcode`\^^@=\other - \catcode`\^^A=\other - \catcode`\^^B=\other - \catcode`\^^C=\other - \catcode`\^^D=\other - \catcode`\^^E=\other - \catcode`\^^F=\other - \catcode`\^^G=\other - \catcode`\^^H=\other - \catcode`\^^K=\other - \catcode`\^^L=\other - \catcode`\^^N=\other - \catcode`\^^P=\other - \catcode`\^^Q=\other - \catcode`\^^R=\other - \catcode`\^^S=\other - \catcode`\^^T=\other - \catcode`\^^U=\other - \catcode`\^^V=\other - \catcode`\^^W=\other - \catcode`\^^X=\other - \catcode`\^^Z=\other - \catcode`\^^[=\other - \catcode`\^^\=\other - \catcode`\^^]=\other - \catcode`\^^^=\other - \catcode`\^^_=\other - % It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc. - % in xref tags, i.e., node names. But since ^^e4 notation isn't - % supported in the main text, it doesn't seem desirable. Furthermore, - % that is not enough: for node names that actually contain a ^ - % character, we would end up writing a line like this: 'xrdef {'hat - % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first - % argument, and \hat is not an expandable control sequence. It could - % all be worked out, but why? Either we support ^^ or we don't. - % - % The other change necessary for this was to define \auxhat: - % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter - % and then to call \auxhat in \setq. - % - \catcode`\^=\other - % - % Special characters. Should be turned off anyway, but... - \catcode`\~=\other - \catcode`\[=\other - \catcode`\]=\other - \catcode`\"=\other - \catcode`\_=\other - \catcode`\|=\other - \catcode`\<=\other - \catcode`\>=\other - \catcode`\$=\other - \catcode`\#=\other - \catcode`\&=\other - \catcode`\%=\other - \catcode`+=\other % avoid \+ for paranoia even though we've turned it off - % - % This is to support \ in node names and titles, since the \ - % characters end up in a \csname. It's easier than - % leaving it active and making its active definition an actual \ - % character. What I don't understand is why it works in the *value* - % of the xrdef. Seems like it should be a catcode12 \, and that - % should not typeset properly. But it works, so I'm moving on for - % now. --karl, 15jan04. - \catcode`\\=\other - % - % Make the characters 128-255 be printing characters. - {% - \count1=128 - \def\loop{% - \catcode\count1=\other - \advance\count1 by 1 - \ifnum \count1<256 \loop \fi - }% - }% - % - % @ is our escape character in .aux files, and we need braces. - \catcode`\{=1 - \catcode`\}=2 - \catcode`\@=0 -} - -\def\readdatafile#1{% -\begingroup - \setupdatafile - \input\jobname.#1 -\endgroup} - -\message{insertions,} -% including footnotes. - -\newcount \footnoteno - -% The trailing space in the following definition for supereject is -% vital for proper filling; pages come out unaligned when you do a -% pagealignmacro call if that space before the closing brace is -% removed. (Generally, numeric constants should always be followed by a -% space to prevent strange expansion errors.) -\def\supereject{\par\penalty -20000\footnoteno =0 } - -% @footnotestyle is meaningful for info output only. -\let\footnotestyle=\comment - -{\catcode `\@=11 -% -% Auto-number footnotes. Otherwise like plain. -\gdef\footnote{% - \let\indent=\ptexindent - \let\noindent=\ptexnoindent - \global\advance\footnoteno by \@ne - \edef\thisfootno{$^{\the\footnoteno}$}% - % - % In case the footnote comes at the end of a sentence, preserve the - % extra spacing after we do the footnote number. - \let\@sf\empty - \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi - % - % Remove inadvertent blank space before typesetting the footnote number. - \unskip - \thisfootno\@sf - \dofootnote -}% - -% Don't bother with the trickery in plain.tex to not require the -% footnote text as a parameter. Our footnotes don't need to be so general. -% -% Oh yes, they do; otherwise, @ifset (and anything else that uses -% \parseargline) fails inside footnotes because the tokens are fixed when -% the footnote is read. --karl, 16nov96. -% -\gdef\dofootnote{% - \insert\footins\bgroup - % We want to typeset this text as a normal paragraph, even if the - % footnote reference occurs in (for example) a display environment. - % So reset some parameters. - \hsize=\pagewidth - \interlinepenalty\interfootnotelinepenalty - \splittopskip\ht\strutbox % top baseline for broken footnotes - \splitmaxdepth\dp\strutbox - \floatingpenalty\@MM - \leftskip\z@skip - \rightskip\z@skip - \spaceskip\z@skip - \xspaceskip\z@skip - \parindent\defaultparindent - % - \smallfonts \rm - % - % Because we use hanging indentation in footnotes, a @noindent appears - % to exdent this text, so make it be a no-op. makeinfo does not use - % hanging indentation so @noindent can still be needed within footnote - % text after an @example or the like (not that this is good style). - \let\noindent = \relax - % - % Hang the footnote text off the number. Use \everypar in case the - % footnote extends for more than one paragraph. - \everypar = {\hang}% - \textindent{\thisfootno}% - % - % Don't crash into the line above the footnote text. Since this - % expands into a box, it must come within the paragraph, lest it - % provide a place where TeX can split the footnote. - \footstrut - \futurelet\next\fo@t -} -}%end \catcode `\@=11 - -% In case a @footnote appears in a vbox, save the footnote text and create -% the real \insert just after the vbox finished. Otherwise, the insertion -% would be lost. -% Similarily, if a @footnote appears inside an alignment, save the footnote -% text to a box and make the \insert when a row of the table is finished. -% And the same can be done for other insert classes. --kasal, 16nov03. - -% Replace the \insert primitive by a cheating macro. -% Deeper inside, just make sure that the saved insertions are not spilled -% out prematurely. -% -\def\startsavinginserts{% - \ifx \insert\ptexinsert - \let\insert\saveinsert - \else - \let\checkinserts\relax - \fi -} - -% This \insert replacement works for both \insert\footins{foo} and -% \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}. -% -\def\saveinsert#1{% - \edef\next{\noexpand\savetobox \makeSAVEname#1}% - \afterassignment\next - % swallow the left brace - \let\temp = -} -\def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}} -\def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1} - -\def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi} - -\def\placesaveins#1{% - \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname - {\box#1}% -} - -% eat @SAVE -- beware, all of them have catcode \other: -{ - \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials % ;-) - \gdef\gobblesave @SAVE{} -} - -% initialization: -\def\newsaveins #1{% - \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}% - \next -} -\def\newsaveinsX #1{% - \csname newbox\endcsname #1% - \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts - \checksaveins #1}% -} - -% initialize: -\let\checkinserts\empty -\newsaveins\footins -\newsaveins\margin - - -% @image. We use the macros from epsf.tex to support this. -% If epsf.tex is not installed and @image is used, we complain. -% -% Check for and read epsf.tex up front. If we read it only at @image -% time, we might be inside a group, and then its definitions would get -% undone and the next image would fail. -\openin 1 = epsf.tex -\ifeof 1 \else - % Do not bother showing banner with epsf.tex v2.7k (available in - % doc/epsf.tex and on ctan). - \def\epsfannounce{\toks0 = }% - \input epsf.tex -\fi -\closein 1 -% -% We will only complain once about lack of epsf.tex. -\newif\ifwarnednoepsf -\newhelp\noepsfhelp{epsf.tex must be installed for images to - work. It is also included in the Texinfo distribution, or you can get - it from ftp://tug.org/tex/epsf.tex.} -% -\def\image#1{% - \ifx\epsfbox\undefined - \ifwarnednoepsf \else - \errhelp = \noepsfhelp - \errmessage{epsf.tex not found, images will be ignored}% - \global\warnednoepsftrue - \fi - \else - \imagexxx #1,,,,,\finish - \fi -} -% -% Arguments to @image: -% #1 is (mandatory) image filename; we tack on .eps extension. -% #2 is (optional) width, #3 is (optional) height. -% #4 is (ignored optional) html alt text. -% #5 is (ignored optional) extension. -% #6 is just the usual extra ignored arg for parsing this stuff. -\newif\ifimagevmode -\def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup - \catcode`\^^M = 5 % in case we're inside an example - \normalturnoffactive % allow _ et al. in names - % If the image is by itself, center it. - \ifvmode - \imagevmodetrue - \nobreak\bigskip - % Usually we'll have text after the image which will insert - % \parskip glue, so insert it here too to equalize the space - % above and below. - \nobreak\vskip\parskip - \nobreak - \line\bgroup - \fi - % - % Output the image. - \ifpdf - \dopdfimage{#1}{#2}{#3}% - \else - % \epsfbox itself resets \epsf?size at each figure. - \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi - \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi - \epsfbox{#1.eps}% - \fi - % - \ifimagevmode \egroup \bigbreak \fi % space after the image -\endgroup} - - -% @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables, -% etc. We don't actually implement floating yet, we always include the -% float "here". But it seemed the best name for the future. -% -\envparseargdef\float{\eatcommaspace\eatcommaspace\dofloat#1, , ,\finish} - -% There may be a space before second and/or third parameter; delete it. -\def\eatcommaspace#1, {#1,} - -% #1 is the optional FLOATTYPE, the text label for this float, typically -% "Figure", "Table", "Example", etc. Can't contain commas. If omitted, -% this float will not be numbered and cannot be referred to. -% -% #2 is the optional xref label. Also must be present for the float to -% be referable. -% -% #3 is the optional positioning argument; for now, it is ignored. It -% will somehow specify the positions allowed to float to (here, top, bottom). -% -% We keep a separate counter for each FLOATTYPE, which we reset at each -% chapter-level command. -\let\resetallfloatnos=\empty -% -\def\dofloat#1,#2,#3,#4\finish{% - \let\thiscaption=\empty - \let\thisshortcaption=\empty - % - % don't lose footnotes inside @float. - % - % BEWARE: when the floats start float, we have to issue warning whenever an - % insert appears inside a float which could possibly float. --kasal, 26may04 - % - \startsavinginserts - % - % We can't be used inside a paragraph. - \par - % - \vtop\bgroup - \def\floattype{#1}% - \def\floatlabel{#2}% - \def\floatloc{#3}% we do nothing with this yet. - % - \ifx\floattype\empty - \let\safefloattype=\empty - \else - {% - % the floattype might have accents or other special characters, - % but we need to use it in a control sequence name. - \indexnofonts - \turnoffactive - \xdef\safefloattype{\floattype}% - }% - \fi - % - % If label is given but no type, we handle that as the empty type. - \ifx\floatlabel\empty \else - % We want each FLOATTYPE to be numbered separately (Figure 1, - % Table 1, Figure 2, ...). (And if no label, no number.) - % - \expandafter\getfloatno\csname\safefloattype floatno\endcsname - \global\advance\floatno by 1 - % - {% - % This magic value for \thissection is output by \setref as the - % XREFLABEL-title value. \xrefX uses it to distinguish float - % labels (which have a completely different output format) from - % node and anchor labels. And \xrdef uses it to construct the - % lists of floats. - % - \edef\thissection{\floatmagic=\safefloattype}% - \setref{\floatlabel}{Yfloat}% - }% - \fi - % - % start with \parskip glue, I guess. - \vskip\parskip - % - % Don't suppress indentation if a float happens to start a section. - \restorefirstparagraphindent -} - -% we have these possibilities: -% @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap -% @float Foo,lbl & no caption: Foo 1.1 -% @float Foo & @caption{Cap}: Foo: Cap -% @float Foo & no caption: Foo -% @float ,lbl & Caption{Cap}: 1.1: Cap -% @float ,lbl & no caption: 1.1 -% @float & @caption{Cap}: Cap -% @float & no caption: -% -\def\Efloat{% - \let\floatident = \empty - % - % In all cases, if we have a float type, it comes first. - \ifx\floattype\empty \else \def\floatident{\floattype}\fi - % - % If we have an xref label, the number comes next. - \ifx\floatlabel\empty \else - \ifx\floattype\empty \else % if also had float type, need tie first. - \appendtomacro\floatident{\tie}% - \fi - % the number. - \appendtomacro\floatident{\chaplevelprefix\the\floatno}% - \fi - % - % Start the printed caption with what we've constructed in - % \floatident, but keep it separate; we need \floatident again. - \let\captionline = \floatident - % - \ifx\thiscaption\empty \else - \ifx\floatident\empty \else - \appendtomacro\captionline{: }% had ident, so need a colon between - \fi - % - % caption text. - \appendtomacro\captionline{\scanexp\thiscaption}% - \fi - % - % If we have anything to print, print it, with space before. - % Eventually this needs to become an \insert. - \ifx\captionline\empty \else - \vskip.5\parskip - \captionline - % - % Space below caption. - \vskip\parskip - \fi - % - % If have an xref label, write the list of floats info. Do this - % after the caption, to avoid chance of it being a breakpoint. - \ifx\floatlabel\empty \else - % Write the text that goes in the lof to the aux file as - % \floatlabel-lof. Besides \floatident, we include the short - % caption if specified, else the full caption if specified, else nothing. - {% - \atdummies - % - % since we read the caption text in the macro world, where ^^M - % is turned into a normal character, we have to scan it back, so - % we don't write the literal three characters "^^M" into the aux file. - \scanexp{% - \xdef\noexpand\gtemp{% - \ifx\thisshortcaption\empty - \thiscaption - \else - \thisshortcaption - \fi - }% - }% - \immediate\write\auxfile{@xrdef{\floatlabel-lof}{\floatident - \ifx\gtemp\empty \else : \gtemp \fi}}% - }% - \fi - \egroup % end of \vtop - % - % place the captured inserts - % - % BEWARE: when the floats start floating, we have to issue warning - % whenever an insert appears inside a float which could possibly - % float. --kasal, 26may04 - % - \checkinserts -} - -% Append the tokens #2 to the definition of macro #1, not expanding either. -% -\def\appendtomacro#1#2{% - \expandafter\def\expandafter#1\expandafter{#1#2}% -} - -% @caption, @shortcaption -% -\def\caption{\docaption\thiscaption} -\def\shortcaption{\docaption\thisshortcaption} -\def\docaption{\checkenv\float \bgroup\scanargctxt\defcaption} -\def\defcaption#1#2{\egroup \def#1{#2}} - -% The parameter is the control sequence identifying the counter we are -% going to use. Create it if it doesn't exist and assign it to \floatno. -\def\getfloatno#1{% - \ifx#1\relax - % Haven't seen this figure type before. - \csname newcount\endcsname #1% - % - % Remember to reset this floatno at the next chap. - \expandafter\gdef\expandafter\resetallfloatnos - \expandafter{\resetallfloatnos #1=0 }% - \fi - \let\floatno#1% -} - -% \setref calls this to get the XREFLABEL-snt value. We want an @xref -% to the FLOATLABEL to expand to "Figure 3.1". We call \setref when we -% first read the @float command. -% -\def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}% - -% Magic string used for the XREFLABEL-title value, so \xrefX can -% distinguish floats from other xref types. -\def\floatmagic{!!float!!} - -% #1 is the control sequence we are passed; we expand into a conditional -% which is true if #1 represents a float ref. That is, the magic -% \thissection value which we \setref above. -% -\def\iffloat#1{\expandafter\doiffloat#1==\finish} -% -% #1 is (maybe) the \floatmagic string. If so, #2 will be the -% (safe) float type for this float. We set \iffloattype to #2. -% -\def\doiffloat#1=#2=#3\finish{% - \def\temp{#1}% - \def\iffloattype{#2}% - \ifx\temp\floatmagic -} - -% @listoffloats FLOATTYPE - print a list of floats like a table of contents. -% -\parseargdef\listoffloats{% - \def\floattype{#1}% floattype - {% - % the floattype might have accents or other special characters, - % but we need to use it in a control sequence name. - \indexnofonts - \turnoffactive - \xdef\safefloattype{\floattype}% - }% - % - % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE. - \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax - \ifhavexrefs - % if the user said @listoffloats foo but never @float foo. - \message{\linenumber No `\safefloattype' floats to list.}% - \fi - \else - \begingroup - \leftskip=\tocindent % indent these entries like a toc - \let\do=\listoffloatsdo - \csname floatlist\safefloattype\endcsname - \endgroup - \fi -} - -% This is called on each entry in a list of floats. We're passed the -% xref label, in the form LABEL-title, which is how we save it in the -% aux file. We strip off the -title and look up \XRLABEL-lof, which -% has the text we're supposed to typeset here. -% -% Figures without xref labels will not be included in the list (since -% they won't appear in the aux file). -% -\def\listoffloatsdo#1{\listoffloatsdoentry#1\finish} -\def\listoffloatsdoentry#1-title\finish{{% - % Can't fully expand XR#1-lof because it can contain anything. Just - % pass the control sequence. On the other hand, XR#1-pg is just the - % page number, and we want to fully expand that so we can get a link - % in pdf output. - \toksA = \expandafter{\csname XR#1-lof\endcsname}% - % - % use the same \entry macro we use to generate the TOC and index. - \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}% - \writeentry -}} - -\message{localization,} -% and i18n. - -% @documentlanguage is usually given very early, just after -% @setfilename. If done too late, it may not override everything -% properly. Single argument is the language abbreviation. -% It would be nice if we could set up a hyphenation file here. -% -\parseargdef\documentlanguage{% - \tex % read txi-??.tex file in plain TeX. - % Read the file if it exists. - \openin 1 txi-#1.tex - \ifeof 1 - \errhelp = \nolanghelp - \errmessage{Cannot read language file txi-#1.tex}% - \else - \input txi-#1.tex - \fi - \closein 1 - \endgroup -} -\newhelp\nolanghelp{The given language definition file cannot be found or -is empty. Maybe you need to install it? In the current directory -should work if nowhere else does.} - - -% @documentencoding should change something in TeX eventually, most -% likely, but for now just recognize it. -\let\documentencoding = \comment - - -% Page size parameters. -% -\newdimen\defaultparindent \defaultparindent = 15pt - -\chapheadingskip = 15pt plus 4pt minus 2pt -\secheadingskip = 12pt plus 3pt minus 2pt -\subsecheadingskip = 9pt plus 2pt minus 2pt - -% Prevent underfull vbox error messages. -\vbadness = 10000 - -% Don't be so finicky about underfull hboxes, either. -\hbadness = 2000 - -% Following George Bush, just get rid of widows and orphans. -\widowpenalty=10000 -\clubpenalty=10000 - -% Use TeX 3.0's \emergencystretch to help line breaking, but if we're -% using an old version of TeX, don't do anything. We want the amount of -% stretch added to depend on the line length, hence the dependence on -% \hsize. We call this whenever the paper size is set. -% -\def\setemergencystretch{% - \ifx\emergencystretch\thisisundefined - % Allow us to assign to \emergencystretch anyway. - \def\emergencystretch{\dimen0}% - \else - \emergencystretch = .15\hsize - \fi -} - -% Parameters in order: 1) textheight; 2) textwidth; -% 3) voffset; 4) hoffset; 5) binding offset; 6) topskip; -% 7) physical page height; 8) physical page width. -% -% We also call \setleading{\textleading}, so the caller should define -% \textleading. The caller should also set \parskip. -% -\def\internalpagesizes#1#2#3#4#5#6#7#8{% - \voffset = #3\relax - \topskip = #6\relax - \splittopskip = \topskip - % - \vsize = #1\relax - \advance\vsize by \topskip - \outervsize = \vsize - \advance\outervsize by 2\topandbottommargin - \pageheight = \vsize - % - \hsize = #2\relax - \outerhsize = \hsize - \advance\outerhsize by 0.5in - \pagewidth = \hsize - % - \normaloffset = #4\relax - \bindingoffset = #5\relax - % - \ifpdf - \pdfpageheight #7\relax - \pdfpagewidth #8\relax - \fi - % - \setleading{\textleading} - % - \parindent = \defaultparindent - \setemergencystretch -} - -% @letterpaper (the default). -\def\letterpaper{{\globaldefs = 1 - \parskip = 3pt plus 2pt minus 1pt - \textleading = 13.2pt - % - % If page is nothing but text, make it come out even. - \internalpagesizes{46\baselineskip}{6in}% - {\voffset}{.25in}% - {\bindingoffset}{36pt}% - {11in}{8.5in}% -}} - -% Use @smallbook to reset parameters for 7x9.25 trim size. -\def\smallbook{{\globaldefs = 1 - \parskip = 2pt plus 1pt - \textleading = 12pt - % - \internalpagesizes{7.5in}{5in}% - {\voffset}{.25in}% - {\bindingoffset}{16pt}% - {9.25in}{7in}% - % - \lispnarrowing = 0.3in - \tolerance = 700 - \hfuzz = 1pt - \contentsrightmargin = 0pt - \defbodyindent = .5cm -}} - -% Use @smallerbook to reset parameters for 6x9 trim size. -% (Just testing, parameters still in flux.) -\def\smallerbook{{\globaldefs = 1 - \parskip = 1.5pt plus 1pt - \textleading = 12pt - % - \internalpagesizes{7.4in}{4.8in}% - {-.2in}{-.4in}% - {0pt}{14pt}% - {9in}{6in}% - % - \lispnarrowing = 0.25in - \tolerance = 700 - \hfuzz = 1pt - \contentsrightmargin = 0pt - \defbodyindent = .4cm -}} - -% Use @afourpaper to print on European A4 paper. -\def\afourpaper{{\globaldefs = 1 - \parskip = 3pt plus 2pt minus 1pt - \textleading = 13.2pt - % - % Double-side printing via postscript on Laserjet 4050 - % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm. - % To change the settings for a different printer or situation, adjust - % \normaloffset until the front-side and back-side texts align. Then - % do the same for \bindingoffset. You can set these for testing in - % your texinfo source file like this: - % @tex - % \global\normaloffset = -6mm - % \global\bindingoffset = 10mm - % @end tex - \internalpagesizes{51\baselineskip}{160mm} - {\voffset}{\hoffset}% - {\bindingoffset}{44pt}% - {297mm}{210mm}% - % - \tolerance = 700 - \hfuzz = 1pt - \contentsrightmargin = 0pt - \defbodyindent = 5mm -}} - -% Use @afivepaper to print on European A5 paper. -% From romildo@urano.iceb.ufop.br, 2 July 2000. -% He also recommends making @example and @lisp be small. -\def\afivepaper{{\globaldefs = 1 - \parskip = 2pt plus 1pt minus 0.1pt - \textleading = 12.5pt - % - \internalpagesizes{160mm}{120mm}% - {\voffset}{\hoffset}% - {\bindingoffset}{8pt}% - {210mm}{148mm}% - % - \lispnarrowing = 0.2in - \tolerance = 800 - \hfuzz = 1.2pt - \contentsrightmargin = 0pt - \defbodyindent = 2mm - \tableindent = 12mm -}} - -% A specific text layout, 24x15cm overall, intended for A4 paper. -\def\afourlatex{{\globaldefs = 1 - \afourpaper - \internalpagesizes{237mm}{150mm}% - {\voffset}{4.6mm}% - {\bindingoffset}{7mm}% - {297mm}{210mm}% - % - % Must explicitly reset to 0 because we call \afourpaper. - \globaldefs = 0 -}} - -% Use @afourwide to print on A4 paper in landscape format. -\def\afourwide{{\globaldefs = 1 - \afourpaper - \internalpagesizes{241mm}{165mm}% - {\voffset}{-2.95mm}% - {\bindingoffset}{7mm}% - {297mm}{210mm}% - \globaldefs = 0 -}} - -% @pagesizes TEXTHEIGHT[,TEXTWIDTH] -% Perhaps we should allow setting the margins, \topskip, \parskip, -% and/or leading, also. Or perhaps we should compute them somehow. -% -\parseargdef\pagesizes{\pagesizesyyy #1,,\finish} -\def\pagesizesyyy#1,#2,#3\finish{{% - \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi - \globaldefs = 1 - % - \parskip = 3pt plus 2pt minus 1pt - \setleading{\textleading}% - % - \dimen0 = #1 - \advance\dimen0 by \voffset - % - \dimen2 = \hsize - \advance\dimen2 by \normaloffset - % - \internalpagesizes{#1}{\hsize}% - {\voffset}{\normaloffset}% - {\bindingoffset}{44pt}% - {\dimen0}{\dimen2}% -}} - -% Set default to letter. -% -\letterpaper - - -\message{and turning on texinfo input format.} - -% Define macros to output various characters with catcode for normal text. -\catcode`\"=\other -\catcode`\~=\other -\catcode`\^=\other -\catcode`\_=\other -\catcode`\|=\other -\catcode`\<=\other -\catcode`\>=\other -\catcode`\+=\other -\catcode`\$=\other -\def\normaldoublequote{"} -\def\normaltilde{~} -\def\normalcaret{^} -\def\normalunderscore{_} -\def\normalverticalbar{|} -\def\normalless{<} -\def\normalgreater{>} -\def\normalplus{+} -\def\normaldollar{$}%$ font-lock fix - -% This macro is used to make a character print one way in \tt -% (where it can probably be output as-is), and another way in other fonts, -% where something hairier probably needs to be done. -% -% #1 is what to print if we are indeed using \tt; #2 is what to print -% otherwise. Since all the Computer Modern typewriter fonts have zero -% interword stretch (and shrink), and it is reasonable to expect all -% typewriter fonts to have this, we can check that font parameter. -% -\def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi} - -% Same as above, but check for italic font. Actually this also catches -% non-italic slanted fonts since it is impossible to distinguish them from -% italic fonts. But since this is only used by $ and it uses \sl anyway -% this is not a problem. -\def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi} - -% Turn off all special characters except @ -% (and those which the user can use as if they were ordinary). -% Most of these we simply print from the \tt font, but for some, we can -% use math or other variants that look better in normal text. - -\catcode`\"=\active -\def\activedoublequote{{\tt\char34}} -\let"=\activedoublequote -\catcode`\~=\active -\def~{{\tt\char126}} -\chardef\hat=`\^ -\catcode`\^=\active -\def^{{\tt \hat}} - -\catcode`\_=\active -\def_{\ifusingtt\normalunderscore\_} -\let\realunder=_ -% Subroutine for the previous macro. -\def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em } - -\catcode`\|=\active -\def|{{\tt\char124}} -\chardef \less=`\< -\catcode`\<=\active -\def<{{\tt \less}} -\chardef \gtr=`\> -\catcode`\>=\active -\def>{{\tt \gtr}} -\catcode`\+=\active -\def+{{\tt \char 43}} -\catcode`\$=\active -\def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix - -% If a .fmt file is being used, characters that might appear in a file -% name cannot be active until we have parsed the command line. -% So turn them off again, and have \everyjob (or @setfilename) turn them on. -% \otherifyactive is called near the end of this file. -\def\otherifyactive{\catcode`+=\other \catcode`\_=\other} - -% Used sometimes to turn off (effectively) the active characters even after -% parsing them. -\def\turnoffactive{% - \normalturnoffactive - \otherbackslash -} - -\catcode`\@=0 - -% \backslashcurfont outputs one backslash character in current font, -% as in \char`\\. -\global\chardef\backslashcurfont=`\\ -\global\let\rawbackslashxx=\backslashcurfont % let existing .??s files work - -% \realbackslash is an actual character `\' with catcode other, and -% \doublebackslash is two of them (for the pdf outlines). -{\catcode`\\=\other @gdef@realbackslash{\} @gdef@doublebackslash{\\}} - -% In texinfo, backslash is an active character; it prints the backslash -% in fixed width font. -\catcode`\\=\active -@def@normalbackslash{{@tt@backslashcurfont}} -% On startup, @fixbackslash assigns: -% @let \ = @normalbackslash - -% \rawbackslash defines an active \ to do \backslashcurfont. -% \otherbackslash defines an active \ to be a literal `\' character with -% catcode other. -@gdef@rawbackslash{@let\=@backslashcurfont} -@gdef@otherbackslash{@let\=@realbackslash} - -% Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of -% the literal character `\'. -% -@def@normalturnoffactive{% - @let\=@normalbackslash - @let"=@normaldoublequote - @let~=@normaltilde - @let^=@normalcaret - @let_=@normalunderscore - @let|=@normalverticalbar - @let<=@normalless - @let>=@normalgreater - @let+=@normalplus - @let$=@normaldollar %$ font-lock fix - @unsepspaces -} - -% Make _ and + \other characters, temporarily. -% This is canceled by @fixbackslash. -@otherifyactive - -% If a .fmt file is being used, we don't want the `\input texinfo' to show up. -% That is what \eatinput is for; after that, the `\' should revert to printing -% a backslash. -% -@gdef@eatinput input texinfo{@fixbackslash} -@global@let\ = @eatinput - -% On the other hand, perhaps the file did not have a `\input texinfo'. Then -% the first `\' in the file would cause an error. This macro tries to fix -% that, assuming it is called before the first `\' could plausibly occur. -% Also turn back on active characters that might appear in the input -% file name, in case not using a pre-dumped format. -% -@gdef@fixbackslash{% - @ifx\@eatinput @let\ = @normalbackslash @fi - @catcode`+=@active - @catcode`@_=@active -} - -% Say @foo, not \foo, in error messages. -@escapechar = `@@ - -% These look ok in all fonts, so just make them not special. -@catcode`@& = @other -@catcode`@# = @other -@catcode`@% = @other - - -@c Local variables: -@c eval: (add-hook 'write-file-hooks 'time-stamp) -@c page-delimiter: "^\\\\message" -@c time-stamp-start: "def\\\\texinfoversion{" -@c time-stamp-format: "%:y-%02m-%02d.%02H" -@c time-stamp-end: "}" -@c End: - -@c vim:sw=2: - -@ignore - arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115 -@end ignore diff --git a/tools/get-version b/tools/get-version new file mode 100755 index 0000000..a184ed7 --- /dev/null +++ b/tools/get-version @@ -0,0 +1,15 @@ +#!/usr/bin/perl + +use strict; +use warnings; + +open(CONF, "configure.ac") or die "Couldn't open configure.ac: $!\n"; + +while () { + if (/^AC_INIT\(\[stow\], \[(.+?)\]/) { + print "$1\n"; + exit 0; + } +} + +exit 1; diff --git a/version.texi b/version.texi deleted file mode 100644 index 3245b32..0000000 --- a/version.texi +++ /dev/null @@ -1,4 +0,0 @@ -@set UPDATED 20 February 2008 -@set UPDATED-MONTH February 2008 -@set EDITION 2.0.2 -@set VERSION 2.0.2