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Stow.pm: reformat comments

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Some methods had comments with a prefix which made the paragraph
inconveniently narrow, and made refilling it really awkward.  So
switch to a more natural comment style.
This commit is contained in:
Adam Spiers 2024-03-31 15:33:14 +01:00
parent 11d4ff01d7
commit 1be40c0532
1 changed files with 144 additions and 130 deletions
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138
lib/Stow.pm.in
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@ -340,9 +340,10 @@ sub plan_stow {
# Parameters: $code => anonymous subroutine to execute within target dir # Parameters: $code => anonymous subroutine to execute within target dir
# Returns : n/a # Returns : n/a
# Throws : n/a # Throws : n/a
# Comments : This is done to ensure that the consumer of the Stow interface #
# : doesn't have to worry about (a) what their cwd is, and # This is done to ensure that the consumer of the Stow interface
# : (b) that their cwd might change. # doesn't have to worry about (a) what their cwd is, and (b) that
# their cwd might change.
# ============================================================================ # ============================================================================
sub within_target_do { sub within_target_do {
my $self = shift; my $self = shift;
@ -376,9 +377,10 @@ sub within_target_do {
# : to symlink source # : to symlink source
# Returns : n/a # Returns : n/a
# Throws : a fatal error if directory cannot be read # 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 # stow_node() and stow_contents() are mutually recursive. $source and
# : $path is used for folding/unfolding trees as necessary # $target are used for creating the symlink $path is used for
# folding/unfolding trees as necessary
# ============================================================================ # ============================================================================
sub stow_contents { sub stow_contents {
my $self = shift; my $self = shift;
@ -447,9 +449,10 @@ sub stow_contents {
# : $source => relative path to symlink source from the dir of target # : $source => relative path to symlink source from the dir of target
# Returns : n/a # Returns : n/a
# Throws : fatal exception if a conflict arises # 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 # stow_node() and stow_contents() are mutually recursive. $source and
# : $path is used for folding/unfolding trees as necessary # $target are used for creating the symlink $path is used for
# folding/unfolding trees as necessary
# ============================================================================ # ============================================================================
sub stow_node { sub stow_node {
my $self = shift; my $self = shift;
@ -593,8 +596,9 @@ sub stow_node {
# Parameters: $target => relative path to symlink target from the current directory # Parameters: $target => relative path to symlink target from the current directory
# Returns : true iff target is a stow directory # Returns : true iff target is a stow directory
# Throws : n/a # Throws : n/a
# Comments : cwd must be the top-level target directory, otherwise #
# : marked_stow_dir() won't work. # cwd must be the top-level target directory, otherwise
# marked_stow_dir() won't work.
# ============================================================================ # ============================================================================
sub should_skip_target { sub should_skip_target {
my $self = shift; my $self = shift;
@ -639,8 +643,9 @@ sub marked_stow_dir {
# : $target => relative path to symlink target from the current directory # : $target => relative path to symlink target from the current directory
# Returns : n/a # Returns : n/a
# Throws : a fatal error if directory cannot be read # Throws : a fatal error if directory cannot be read
# Comments : unstow_node_orig() and unstow_contents_orig() are mutually recursive #
# : Here we traverse the target tree, rather than the source tree. # unstow_node_orig() and unstow_contents_orig() are mutually recursive.
# Here we traverse the target tree, rather than the source tree.
# ============================================================================ # ============================================================================
sub unstow_contents_orig { sub unstow_contents_orig {
my $self = shift; my $self = shift;
@ -683,7 +688,8 @@ sub unstow_contents_orig {
# : $target => relative path to symlink target from the current directory # : $target => relative path to symlink target from the current directory
# Returns : n/a # Returns : n/a
# Throws : fatal error if a conflict arises # Throws : fatal error if a conflict arises
# Comments : unstow_node() and unstow_contents() are mutually recursive #
# unstow_node() and unstow_contents() are mutually recursive.
# ============================================================================ # ============================================================================
sub unstow_node_orig { sub unstow_node_orig {
my $self = shift; my $self = shift;
@ -759,8 +765,9 @@ sub unstow_node_orig {
# : $target => relative path to symlink target from the current directory # : $target => relative path to symlink target from the current directory
# Returns : n/a # Returns : n/a
# Throws : a fatal error if directory cannot be read # Throws : a fatal error if directory cannot be read
# Comments : unstow_node() and unstow_contents() are mutually recursive #
# : Here we traverse the source tree, rather than the target tree. # unstow_node() and unstow_contents() are mutually recursive.
# Here we traverse the source tree, rather than the target tree.
# ============================================================================ # ============================================================================
sub unstow_contents { sub unstow_contents {
my $self = shift; my $self = shift;
@ -816,7 +823,8 @@ sub unstow_contents {
# : $target => relative path to symlink target from the current directory # : $target => relative path to symlink target from the current directory
# Returns : n/a # Returns : n/a
# Throws : fatal error if a conflict arises # Throws : fatal error if a conflict arises
# Comments : unstow_node() and unstow_contents() are mutually recursive #
# unstow_node() and unstow_contents() are mutually recursive.
# ============================================================================ # ============================================================================
sub unstow_node { sub unstow_node {
my $self = shift; my $self = shift;
@ -923,7 +931,8 @@ sub unstow_node {
# : $source => where that link points to # : $source => where that link points to
# Returns : the package iff link is owned by stow, otherwise '' # Returns : the package iff link is owned by stow, otherwise ''
# Throws : n/a # Throws : n/a
# Comments : lossy wrapper around find_stowed_path() #
# lossy wrapper around find_stowed_path().
# ============================================================================ # ============================================================================
sub link_owned_by_package { sub link_owned_by_package {
my $self = shift; my $self = shift;
@ -959,9 +968,10 @@ sub link_owned_by_package {
# : to the stow directory; and $package is the name of the # : to the stow directory; and $package is the name of the
# : package; or ('', '', '') if link is not owned by stow. # : package; or ('', '', '') if link is not owned by stow.
# Throws : n/a # Throws : n/a
# Comments : cwd must be the top-level target directory, otherwise #
# : find_containing_marked_stow_dir() won't work. # cwd must be the top-level target directory, otherwise
# : Allow for stow dir not being under target dir. # find_containing_marked_stow_dir() won't work. Allow for stow dir
# not being under target dir.
# ============================================================================ # ============================================================================
sub find_stowed_path { sub find_stowed_path {
my $self = shift; my $self = shift;
@ -1034,8 +1044,9 @@ sub link_dest_within_stow_dir {
# : as a Stow directory, and $package is the containing package; # : as a Stow directory, and $package is the containing package;
# : or ('', '') if no containing directory is marked as a stow # : or ('', '') if no containing directory is marked as a stow
# : directory. # : directory.
# Comments : cwd must be the top-level target directory, otherwise #
# : marked_stow_dir() won't work. # cwd must be the top-level target directory, otherwise
# marked_stow_dir() won't work.
# ============================================================================= # =============================================================================
sub find_containing_marked_stow_dir { sub find_containing_marked_stow_dir {
my $self = shift; my $self = shift;
@ -1067,13 +1078,14 @@ sub find_containing_marked_stow_dir {
# Parameters: $dir => path to directory to check # Parameters: $dir => path to directory to check
# Returns : n/a # Returns : n/a
# Throws : no exceptions # Throws : no exceptions
# Comments : This is invoked by unstow_contents(). #
# : We only clean up links which are both orphaned and owned by # This is invoked by unstow_contents(). We only clean up links which
# : Stow, i.e. they point to a non-existent location within a # are both orphaned and owned by Stow, i.e. they point to a
# : Stow package. These can block tree folding, and they can # non-existent location within a Stow package. These can block tree
# : easily occur when a file in Stow package is renamed or removed, # folding, and they can easily occur when a file in Stow package is
# : so the benefit should outweigh the low risk of actually someone # renamed or removed, so the benefit should outweigh the low risk of
# : wanting to keep an orphaned link to within a Stow package. # actually someone wanting to keep an orphaned link to within a Stow
# package.
# ============================================================================= # =============================================================================
sub cleanup_invalid_links { sub cleanup_invalid_links {
my $self = shift; my $self = shift;
@ -1152,8 +1164,9 @@ sub cleanup_invalid_links {
# Parameters: $target => path to a directory # Parameters: $target => path to a directory
# Returns : path to the parent dir iff the tree can be safely folded # Returns : path to the parent dir iff the tree can be safely folded
# Throws : n/a # 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 # The path returned is relative to the parent of $target, i.e. it can
# be used as the source for a replacement symlink.
# ============================================================================ # ============================================================================
sub foldable { sub foldable {
my $self = shift; my $self = shift;
@ -1223,7 +1236,8 @@ sub foldable {
# : $target => directory that we will replace with a link to $source # : $target => directory that we will replace with a link to $source
# Returns : n/a # Returns : n/a
# Throws : none # Throws : none
# Comments : only called iff foldable() is true so we can remove some checks #
# Only called iff foldable() is true so we can remove some checks.
# ============================================================================ # ============================================================================
sub fold_tree { sub fold_tree {
my $self = shift; my $self = shift;
@ -1256,7 +1270,6 @@ sub fold_tree {
# : $message => a description of the conflict # : $message => a description of the conflict
# Returns : n/a # Returns : n/a
# Throws : none # Throws : none
# Comments : none
# ============================================================================ # ============================================================================
sub conflict { sub conflict {
my $self = shift; my $self = shift;
@ -1335,7 +1348,6 @@ sub get_action_count {
# : relative to its package directory # : relative to its package directory
# Returns : true iff the path should be ignored # Returns : true iff the path should be ignored
# Throws : no exceptions # Throws : no exceptions
# Comments : none
# ============================================================================= # =============================================================================
sub ignore { sub ignore {
my $self = shift; my $self = shift;
@ -1518,7 +1530,6 @@ sub get_default_global_ignore_regexps {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : no exceptions # Throws : no exceptions
# Comments : none
# ============================================================================= # =============================================================================
sub defer { sub defer {
my $self = shift; my $self = shift;
@ -1536,7 +1547,6 @@ sub defer {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : no exceptions # Throws : no exceptions
# Comments : none
# ============================================================================= # =============================================================================
sub override { sub override {
my $self = shift; my $self = shift;
@ -1561,7 +1571,6 @@ sub override {
# Parameters: none # Parameters: none
# Returns : n/a # Returns : n/a
# Throws : fatal error if tasks list is corrupted or a task fails # Throws : fatal error if tasks list is corrupted or a task fails
# Comments : none
# ============================================================================ # ============================================================================
sub process_tasks { sub process_tasks {
my $self = shift; my $self = shift;
@ -1590,9 +1599,10 @@ sub process_tasks {
# Parameters: $task => the task to process # Parameters: $task => the task to process
# Returns : n/a # Returns : n/a
# Throws : fatal error if task fails # Throws : fatal error if task fails
# Comments : Must run from within target directory. #
# : Task involve either creating or deleting dirs and symlinks # Must run from within target directory. Task involve either creating
# : an action is set to 'skip' if it is found to be redundant # or deleting dirs and symlinks an action is set to 'skip' if it is
# found to be redundant
# ============================================================================ # ============================================================================
sub process_task { sub process_task {
my $self = shift; my $self = shift;
@ -1646,7 +1656,6 @@ sub process_task {
# Parameters: $path # Parameters: $path
# Returns : 'remove', 'create', or '' if there is no action # Returns : 'remove', 'create', or '' if there is no action
# Throws : a fatal exception if an invalid action is found # Throws : a fatal exception if an invalid action is found
# Comments : none
# ============================================================================ # ============================================================================
sub link_task_action { sub link_task_action {
my $self = shift; my $self = shift;
@ -1671,7 +1680,6 @@ sub link_task_action {
# Parameters: $path # Parameters: $path
# Returns : 'remove', 'create', or '' if there is no action # Returns : 'remove', 'create', or '' if there is no action
# Throws : a fatal exception if an invalid action is found # Throws : a fatal exception if an invalid action is found
# Comments : none
# ============================================================================ # ============================================================================
sub dir_task_action { sub dir_task_action {
my $self = shift; my $self = shift;
@ -1697,7 +1705,6 @@ sub dir_task_action {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : none # Throws : none
# Comments : none
# ============================================================================ # ============================================================================
sub parent_link_scheduled_for_removal { sub parent_link_scheduled_for_removal {
my $self = shift; my $self = shift;
@ -1724,8 +1731,9 @@ sub parent_link_scheduled_for_removal {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : none # Throws : none
# Comments : returns false if an existing link is scheduled for removal #
# : and true if a non-existent link is scheduled for creation # Returns false if an existing link is scheduled for removal and true
# if a non-existent link is scheduled for creation.
# ============================================================================ # ============================================================================
sub is_a_link { sub is_a_link {
my $self = shift; my $self = shift;
@ -1760,9 +1768,10 @@ sub is_a_link {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : none # Throws : none
# Comments : returns false if an existing directory is scheduled for removal #
# : and true if a non-existent directory is scheduled for creation # Returns false if an existing directory is scheduled for removal and
# : we also need to be sure we are not just following a link # 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 { sub is_a_dir {
my $self = shift; my $self = shift;
@ -1795,9 +1804,10 @@ sub is_a_dir {
# Parameters: $path # Parameters: $path
# Returns : Boolean # Returns : Boolean
# Throws : none # Throws : none
# Comments : returns false if an existing node is scheduled for removal #
# : true if a non-existent node is scheduled for creation # Returns false if an existing node is scheduled for removal true if a
# : we also need to be sure we are not just following a link # non-existent node is scheduled for creation. we also need to be
# sure we are not just following a link.
# ============================================================================ # ============================================================================
sub is_a_node { sub is_a_node {
my $self = shift; my $self = shift;
@ -1868,7 +1878,6 @@ sub is_a_node {
# Returns : a string # Returns : a string
# Throws : fatal exception if the given path is not a current or planned # Throws : fatal exception if the given path is not a current or planned
# : link # : link
# Comments : none
# ============================================================================ # ============================================================================
sub read_a_link { sub read_a_link {
my $self = shift; my $self = shift;
@ -1901,7 +1910,8 @@ sub read_a_link {
# : $newfile => the file to link # : $newfile => the file to link
# Returns : n/a # Returns : n/a
# Throws : error if this clashes with an existing planned operation # Throws : error if this clashes with an existing planned operation
# Comments : cleans up operations that undo previous operations #
# Cleans up operations that undo previous operations.
# ============================================================================ # ============================================================================
sub do_link { sub do_link {
my $self = shift; my $self = shift;
@ -1978,7 +1988,8 @@ sub do_link {
# Parameters: $file => the file to unlink # Parameters: $file => the file to unlink
# Returns : n/a # Returns : n/a
# Throws : error if this clashes with an existing planned operation # Throws : error if this clashes with an existing planned operation
# Comments : will remove an existing planned link #
# Will remove an existing planned link.
# ============================================================================ # ============================================================================
sub do_unlink { sub do_unlink {
my $self = shift; my $self = shift;
@ -2033,9 +2044,11 @@ sub do_unlink {
# Parameters: $dir => the directory to remove # Parameters: $dir => the directory to remove
# Returns : n/a # Returns : n/a
# Throws : fatal exception if operation fails # Throws : fatal exception if operation fails
# Comments : outputs a message if 'verbose' option is set #
# : does not perform operation if 'simulate' option is set # Outputs a message if 'verbose' option is set.
# Comments : cleans up operations that undo previous operations # Does not perform operation if 'simulate' option is set.
#
# Cleans up operations that undo previous operations.
# ============================================================================ # ============================================================================
sub do_mkdir { sub do_mkdir {
my $self = shift; my $self = shift;
@ -2096,8 +2109,9 @@ sub do_mkdir {
# Parameters: $dir => the directory to remove # Parameters: $dir => the directory to remove
# Returns : n/a # Returns : n/a
# Throws : fatal exception if operation fails # Throws : fatal exception if operation fails
# Comments : outputs a message if 'verbose' option is set #
# : does not perform operation if 'simulate' option is set # Outputs a message if 'verbose' option is set.
# Does not perform operation if 'simulate' option is set.
# ============================================================================ # ============================================================================
sub do_rmdir { sub do_rmdir {
my $self = shift; my $self = shift;
@ -2151,7 +2165,8 @@ sub do_rmdir {
# : $dst => the path to move it to # : $dst => the path to move it to
# Returns : n/a # Returns : n/a
# Throws : error if this clashes with an existing planned operation # Throws : error if this clashes with an existing planned operation
# Comments : alters contents of package installation image in stow dir #
# Alters contents of package installation image in stow dir.
# ============================================================================ # ============================================================================
sub do_mv { sub do_mv {
my $self = shift; my $self = shift;
@ -2204,7 +2219,6 @@ sub do_mv {
# Parameters: $message => error message to output # Parameters: $message => error message to output
# Returns : n/a # Returns : n/a
# Throws : n/a # Throws : n/a
# Comments : none
# ============================================================================ # ============================================================================
sub internal_error { sub internal_error {
my ($format, @args) = @_; my ($format, @args) = @_;