Add --no-folding option.
This commit is contained in:
Adam Spiers
parent
17d3586e84
commit
ed12c787df
7 changed files with 285 additions and 25 deletions
5
NEWS
5
NEWS
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@ -2,6 +2,11 @@ News file for Stow.
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* Changes in version 2.1.4
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** New --no-folding option
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Disables folding of newly stowed directories when stowing, and
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refolding of newly foldable directories when unstowing.
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** Remove -a option (--adopt still available)
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As --adopt is the only option which allows stow to modify files, it
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@ -195,6 +195,11 @@ stow directory, and then stowing proceeds as before. So effectively,
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the file becomes adopted by the stow package, without its contents
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changing.
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=item --no-folding
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Disable folding of newly stowed directories when stowing, and
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refolding of newly foldable directories when unstowing.
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=item --ignore=REGEX
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Ignore files ending in this Perl regex.
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@ -476,7 +481,7 @@ sub process_options {
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\%options,
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'verbose|v:+', 'help|h', 'simulate|n|no',
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'version|V', 'compat|p', 'dir|d=s', 'target|t=s',
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'adopt',
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'adopt', 'no-folding',
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# clean and pre-compile any regex's at parse time
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'ignore=s' =>
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@ -327,6 +327,16 @@ pages that are owned by stow and would otherwise cause a conflict.
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The regular expression is anchored to the beginning of the path relative to
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the target directory, because this is what you will want to do most of the time.
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@item --no-folding
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This disables any further @ref{tree folding} or @ref{tree refolding}.
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If a new subdirectory is encountered whilst stowing a new package, the
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subdirectory is created within the target, and its contents are
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symlinked, rather than just creating a symlink for the directory. If
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removal of symlinks whilst unstowing a package causes a subtree to be
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foldable (i.e. only containing symlinks to a single package), that
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subtree will not be removed and replaced with a symlink.
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@cindex adopting existing files
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@item --adopt
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@strong{Warning!} This behaviour is specifically intended to alter the
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@ -606,7 +616,8 @@ and it will descend into @file{/usr/local/lib} and create the
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tree-folding symlink @file{perl} pointing to
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@file{../stow/perl/lib/perl}, and so on. As a rule, Stow only
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descends as far as necessary into the target tree when it can create a
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tree-folding symlink.
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tree-folding symlink. However, this behaviour can be changed via
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the @option{--no-folding} option; @pxref{Invoking Stow}.
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@anchor{Tree unfolding}
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@section Tree unfolding
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@ -681,13 +692,20 @@ directory and a @file{man} directory at the top level, then we only scan
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@file{/usr/local/lib} or @file{/usr/local/share}, or for that matter
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@file{/usr/local/stow}. Any symlink it finds that points into the package
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being deleted is removed. Any directory that contained only symlinks to the
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package being deleted is removed. Any directory that, after removing symlinks
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and empty subdirectories, contains only symlinks to a single other package, is
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considered to be a previously ``folded'' tree that was ``split open.'' Stow
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will re-fold the tree by removing the symlinks to the surviving package,
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removing the directory, then linking the directory back to the surviving
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package.
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package being deleted is removed.
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@anchor{tree refolding}
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@section Refolding ``foldable'' trees.
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@cindex refolding trees
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@cindex tree refolding
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After removing symlinks and empty subdirectories, any directory that
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contains only symlinks to a single other package is considered to be a
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previously ``folded'' tree that was ``split open.'' Stow will refold
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the tree by removing the symlinks to the surviving package, removing
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the directory, then linking the directory back to the surviving
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package. However, this behaviour can be prevented via the
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@option{--no-folding} option; @pxref{Invoking Stow}.
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@c ===========================================================================
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@node Conflicts, Mixing Operations, Deleting Packages, Top
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@ -54,16 +54,17 @@ our @default_global_ignore_regexps =
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# These are the default options for each Stow instance.
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our %DEFAULT_OPTIONS = (
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conflicts => 0,
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simulate => 0,
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verbose => 0,
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paranoid => 0,
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compat => 0,
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test_mode => 0,
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adopt => 0,
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ignore => [],
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override => [],
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defer => [],
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conflicts => 0,
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simulate => 0,
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verbose => 0,
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paranoid => 0,
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compat => 0,
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test_mode => 0,
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adopt => 0,
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'no-folding' => 0,
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ignore => [],
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override => [],
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defer => [],
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);
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=head1 CONSTRUCTORS
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@ -100,6 +101,8 @@ See the documentation for the F<stow> CLI front-end for information on these.
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=item * adopt
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=item * no-folding
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=item * ignore
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=item * override
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@ -517,6 +520,15 @@ sub stow_node {
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}
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}
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}
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elsif ($self->{'no-folding'} && -d $path) {
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$self->do_mkdir($target);
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$self->stow_contents(
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$self->{stow_path},
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$package,
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$target,
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join_paths('..', $source),
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);
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}
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else {
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$self->do_link($source, $target);
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}
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@ -994,6 +1006,10 @@ sub foldable {
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my ($target) = @_;
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debug(3, "--- Is $target foldable?");
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if ($self->{'no-folding'}) {
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debug(3, "--- no because --no-folding enabled");
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return '';
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}
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opendir my $DIR, $target
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or error(qq{Cannot read directory "$target" ($!)\n});
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108
t/stow.t
108
t/stow.t
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@ -7,7 +7,7 @@
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use strict;
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use warnings;
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use Test::More tests => 35;
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use Test::More tests => 111;
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use Test::Output;
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use English qw(-no_match_vars);
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@ -32,7 +32,7 @@ make_file('../stow/pkg1/bin1/file1');
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$stow->plan_stow('pkg1');
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$stow->process_tasks();
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is($stow->get_conflicts(), 0, 'no conflicts with minimal stow');
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is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow');
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is(
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readlink('bin1'),
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'../stow/pkg1/bin1',
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@ -387,7 +387,7 @@ make_file("$OUT_DIR/stow/pkg16/bin16/file16");
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$stow->plan_stow('pkg16');
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$stow->process_tasks();
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is($stow->get_conflicts(), 0, 'no conflicts with minimal stow');
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is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow');
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is(
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readlink("$OUT_DIR/target/bin16"),
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'../stow/pkg16/bin16',
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@ -406,7 +406,7 @@ make_file("$OUT_DIR/stow/pkg17/bin17/file17");
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$stow->plan_stow('pkg17');
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$stow->process_tasks();
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is($stow->get_conflicts(), 0, 'no conflicts with minimal stow');
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is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow');
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is(
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readlink("$OUT_DIR/target/bin17"),
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'../stow/pkg17/bin17',
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@ -425,10 +425,108 @@ make_file("$OUT_DIR/stow/pkg18/bin18/file18");
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$stow->plan_stow('pkg18');
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$stow->process_tasks();
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is($stow->get_conflicts(), 0, 'no conflicts with minimal stow');
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is_deeply([ $stow->get_conflicts ], [], 'no conflicts with minimal stow');
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is(
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readlink("$OUT_DIR/target/bin18"),
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'../stow/pkg18/bin18',
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=> "minimal stow of a simple tree with absolute stow and target dirs"
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);
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#
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# stow a tree with no-folding enabled -
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# no new folded directories should be created, and existing
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# folded directories should be split open (unfolded) where
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# (and only where) necessary
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#
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cd("$OUT_DIR/target");
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sub create_pkg {
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my ($id, $pkg) = @_;
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my $stow_pkg = "../stow/$id-$pkg";
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make_dir ($stow_pkg);
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make_file("$stow_pkg/$id-file-$pkg");
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# create a shallow hierarchy specific to this package which isn't
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# yet stowed
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make_dir ("$stow_pkg/$id-$pkg-only-new");
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make_file("$stow_pkg/$id-$pkg-only-new/$id-file-$pkg");
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# create a deeper hierarchy specific to this package which isn't
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# yet stowed
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make_dir ("$stow_pkg/$id-$pkg-only-new2/subdir");
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make_file("$stow_pkg/$id-$pkg-only-new2/subdir/$id-file-$pkg");
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# create a hierarchy specific to this package which is already
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# stowed via a folded tree
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make_dir ("$stow_pkg/$id-$pkg-only-old");
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make_link("$id-$pkg-only-old", "$stow_pkg/$id-$pkg-only-old");
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make_file("$stow_pkg/$id-$pkg-only-old/$id-file-$pkg");
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# create a shared hierarchy which this package uses
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make_dir ("$stow_pkg/$id-shared");
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make_file("$stow_pkg/$id-shared/$id-file-$pkg");
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# create a partially shared hierarchy which this package uses
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make_dir ("$stow_pkg/$id-shared2/subdir-$pkg");
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make_file("$stow_pkg/$id-shared2/$id-file-$pkg");
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make_file("$stow_pkg/$id-shared2/subdir-$pkg/$id-file-$pkg");
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}
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foreach my $pkg (qw{a b}) {
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create_pkg('no-folding', $pkg);
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}
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$stow = new_Stow('no-folding' => 1);
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$stow->plan_stow('no-folding-a');
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is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding');
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my @tasks = $stow->get_tasks;
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use Data::Dumper;
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is(scalar(@tasks), 12 => "6 dirs, 6 links") || warn Dumper(\@tasks);
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$stow->process_tasks();
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sub check_no_folding {
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my ($pkg) = @_;
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my $stow_pkg = "../stow/no-folding-$pkg";
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is_link("no-folding-file-$pkg", "$stow_pkg/no-folding-file-$pkg");
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# check existing folded tree is untouched
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is_link("no-folding-$pkg-only-old", "$stow_pkg/no-folding-$pkg-only-old");
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# check newly stowed shallow tree is not folded
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is_dir_not_symlink("no-folding-$pkg-only-new");
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is_link("no-folding-$pkg-only-new/no-folding-file-$pkg",
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"../$stow_pkg/no-folding-$pkg-only-new/no-folding-file-$pkg");
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# check newly stowed deeper tree is not folded
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is_dir_not_symlink("no-folding-$pkg-only-new2");
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is_dir_not_symlink("no-folding-$pkg-only-new2/subdir");
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is_link("no-folding-$pkg-only-new2/subdir/no-folding-file-$pkg",
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"../../$stow_pkg/no-folding-$pkg-only-new2/subdir/no-folding-file-$pkg");
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# check shared tree is not folded. first time round this will be
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# newly stowed.
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is_dir_not_symlink('no-folding-shared');
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is_link("no-folding-shared/no-folding-file-$pkg",
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"../$stow_pkg/no-folding-shared/no-folding-file-$pkg");
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# check partially shared tree is not folded. first time round this
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# will be newly stowed.
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is_dir_not_symlink('no-folding-shared2');
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is_link("no-folding-shared2/no-folding-file-$pkg",
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"../$stow_pkg/no-folding-shared2/no-folding-file-$pkg");
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is_link("no-folding-shared2/no-folding-file-$pkg",
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"../$stow_pkg/no-folding-shared2/no-folding-file-$pkg");
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}
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check_no_folding('a');
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$stow = new_Stow('no-folding' => 1);
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$stow->plan_stow('no-folding-b');
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is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding');
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@tasks = $stow->get_tasks;
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is(scalar(@tasks), 10 => '4 dirs, 6 links') || warn Dumper(\@tasks);
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$stow->process_tasks();
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check_no_folding('a');
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check_no_folding('b');
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@ -13,6 +13,7 @@ use Carp qw(croak);
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use File::Basename;
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use File::Path qw(remove_tree);
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use File::Spec;
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use Test::More;
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use Stow;
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use Stow::Util qw(parent canon_path);
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@ -26,6 +27,7 @@ our @EXPORT = qw(
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make_dir make_link make_invalid_link make_file
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remove_dir remove_link
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cat_file
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is_link is_dir_not_symlink is_nonexistent_path
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);
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our $OUT_DIR = 'tmp-testing-trees';
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@ -254,6 +256,41 @@ sub cat_file {
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return $contents;
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}
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#===== SUBROUTINE ===========================================================
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# Name : is_link()
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# Purpose : assert path is a symlink
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# Parameters: $path => path to check
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# : $dest => target symlink should point to
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#============================================================================
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sub is_link {
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my ($path, $dest) = @_;
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ok(-l $path => "$path should be symlink");
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is(readlink $path, $dest => "$path symlinks to $dest");
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}
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#===== SUBROUTINE ===========================================================
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# Name : is_dir_not_symlink()
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# Purpose : assert path is a directory not a symlink
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# Parameters: $path => path to check
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#============================================================================
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sub is_dir_not_symlink {
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my ($path) = @_;
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ok(! -l $path => "$path should not be symlink");
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ok(-d _ => "$path should be a directory");
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}
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#===== SUBROUTINE ===========================================================
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# Name : is_nonexistent_path()
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# Purpose : assert path does not exist
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# Parameters: $path => path to check
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#============================================================================
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sub is_nonexistent_path {
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my ($path) = @_;
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ok(! -l $path => "$path should not be symlink");
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ok(! -e _ => "$path should not exist");
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}
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1;
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# Local variables:
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85
t/unstow.t
85
t/unstow.t
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@ -7,7 +7,7 @@
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use strict;
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use warnings;
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use Test::More tests => 23;
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use Test::More tests => 38;
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use Test::Output;
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use English qw(-no_match_vars);
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@ -341,8 +341,89 @@ ok(
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=> 'unstow a simple tree with absolute stow and target dirs'
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);
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#
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# unstow a tree with no-folding enabled -
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# no refolding should take place
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#
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cd("$OUT_DIR/target");
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sub create_and_stow_pkg {
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my ($id, $pkg) = @_;
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my $stow_pkg = "../stow/$id-$pkg";
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make_dir ($stow_pkg);
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make_file("$stow_pkg/$id-file-$pkg");
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# create a shallow hierarchy specific to this package and stow
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# via folding
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make_dir ("$stow_pkg/$id-$pkg-only-folded");
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make_file("$stow_pkg/$id-$pkg-only-folded/file-$pkg");
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make_link("$id-$pkg-only-folded", "$stow_pkg/$id-$pkg-only-folded");
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# create a deeper hierarchy specific to this package and stow
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# via folding
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make_dir ("$stow_pkg/$id-$pkg-only-folded2/subdir");
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make_file("$stow_pkg/$id-$pkg-only-folded2/subdir/file-$pkg");
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make_link("$id-$pkg-only-folded2",
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"$stow_pkg/$id-$pkg-only-folded2");
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# create a shallow hierarchy specific to this package and stow
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# without folding
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make_dir ("$stow_pkg/$id-$pkg-only-unfolded");
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make_file("$stow_pkg/$id-$pkg-only-unfolded/file-$pkg");
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make_dir ("$id-$pkg-only-unfolded");
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make_link("$id-$pkg-only-unfolded/file-$pkg",
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"../$stow_pkg/$id-$pkg-only-unfolded/file-$pkg");
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# create a deeper hierarchy specific to this package and stow
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# without folding
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make_dir ("$stow_pkg/$id-$pkg-only-unfolded2/subdir");
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make_file("$stow_pkg/$id-$pkg-only-unfolded2/subdir/file-$pkg");
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make_dir ("$id-$pkg-only-unfolded2/subdir");
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make_link("$id-$pkg-only-unfolded2/subdir/file-$pkg",
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"../../$stow_pkg/$id-$pkg-only-unfolded2/subdir/file-$pkg");
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# create a shallow shared hierarchy which this package uses, and stow
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# its contents without folding
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make_dir ("$stow_pkg/$id-shared");
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make_file("$stow_pkg/$id-shared/file-$pkg");
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make_dir ("$id-shared");
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make_link("$id-shared/file-$pkg",
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"../$stow_pkg/$id-shared/file-$pkg");
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# create a deeper shared hierarchy which this package uses, and stow
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# its contents without folding
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make_dir ("$stow_pkg/$id-shared2/subdir");
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make_file("$stow_pkg/$id-shared2/file-$pkg");
|
||||
make_file("$stow_pkg/$id-shared2/subdir/file-$pkg");
|
||||
make_dir ("$id-shared2/subdir");
|
||||
make_link("$id-shared2/file-$pkg",
|
||||
"../$stow_pkg/$id-shared2/file-$pkg");
|
||||
make_link("$id-shared2/subdir/file-$pkg",
|
||||
"../../$stow_pkg/$id-shared2/subdir/file-$pkg");
|
||||
}
|
||||
|
||||
foreach my $pkg (qw{a b}) {
|
||||
create_and_stow_pkg('no-folding', $pkg);
|
||||
}
|
||||
|
||||
$stow = new_Stow('no-folding' => 1);
|
||||
$stow->plan_unstow('no-folding-b');
|
||||
is_deeply([ $stow->get_conflicts ], [] => 'no conflicts with --no-folding');
|
||||
use Data::Dumper;
|
||||
#warn Dumper($stow->get_tasks);
|
||||
|
||||
$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');
|
||||
|
||||
|
||||
# Todo
|
||||
#
|
||||
# Test cleaning up subdirs with --paranoid option
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue