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#!/usr/bin/perl |
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# |
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# This file is part of GNU Stow. |
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# |
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# GNU Stow is free software: you can redistribute it and/or modify it |
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# under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# GNU Stow is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see https://www.gnu.org/licenses/. |
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package Stow; |
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=head1 NAME |
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Stow - manage farms of symbolic links |
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=head1 SYNOPSIS |
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my $stow = new Stow(%$options); |
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$stow->plan_unstow(@pkgs_to_unstow); |
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$stow->plan_stow (@pkgs_to_stow); |
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my %conflicts = $stow->get_conflicts; |
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$stow->process_tasks() unless %conflicts; |
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=head1 DESCRIPTION |
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This is the backend Perl module for GNU Stow, a program for managing |
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the installation of software packages, keeping them separate |
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(C vs. C, for example) |
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while making them appear to be installed in the same place |
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(C). |
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Stow doesn't store an extra state between runs, so there's no danger |
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of mangling directories when file hierarchies don't match the |
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database. Also, stow will never delete any files, directories, or |
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links that appear in a stow directory, so it is always possible to |
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rebuild the target tree. |
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=cut |
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1143434
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use strict; |
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use warnings; |
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use Carp qw(carp cluck croak confess longmess); |
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use File::Copy qw(move); |
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use File::Spec; |
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use POSIX qw(getcwd); |
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use Stow::Util qw(set_debug_level debug error set_test_mode |
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24360
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join_paths restore_cwd canon_path parent adjust_dotfile); |
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our $ProgramName = 'stow'; |
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our $VERSION = '2.3.1'; |
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our $LOCAL_IGNORE_FILE = '.stow-local-ignore'; |
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our $GLOBAL_IGNORE_FILE = '.stow-global-ignore'; |
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our @default_global_ignore_regexps = |
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__PACKAGE__->get_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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dotfiles => 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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=head2 new(%options) |
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=head3 Required options |
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=over 4 |
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=item * dir - the stow directory |
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=item * target - the target directory |
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=back |
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=head3 Non-mandatory options |
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See the documentation for the F CLI front-end for information on these. |
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=over 4 |
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=item * conflicts |
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=item * simulate |
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=item * verbose |
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=item * paranoid |
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=item * compat |
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=item * test_mode |
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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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=item * defer |
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=back |
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N.B. This sets the current working directory to the target directory. |
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=cut |
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sub new { |
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1
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my $self = shift; |
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my $class = ref($self) || $self; |
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my %opts = @_; |
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my $new = bless { }, $class; |
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$new->{action_count} = 0; |
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for my $required_arg (qw(dir target)) { |
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croak "$class->new() called without '$required_arg' parameter\n" |
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354
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unless exists $opts{$required_arg}; |
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156
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421
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$new->{$required_arg} = delete $opts{$required_arg}; |
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} |
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149
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364
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for my $opt (keys %DEFAULT_OPTIONS) { |
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$new->{$opt} = exists $opts{$opt} ? delete $opts{$opt} |
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1770
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: $DEFAULT_OPTIONS{$opt}; |
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} |
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154
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225
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if (%opts) { |
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croak "$class->new() called with unrecognised parameter(s): ", |
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join(", ", keys %opts), "\n"; |
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} |
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159
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set_debug_level($new->get_verbosity()); |
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set_test_mode($new->{test_mode}); |
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$new->set_stow_dir(); |
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541
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$new->init_state(); |
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return $new; |
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} |
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167
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sub get_verbosity { |
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0
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my $self = shift; |
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return $self->{verbose} unless $self->{test_mode}; |
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return 0 unless exists $ENV{TEST_VERBOSE}; |
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return 0 unless length $ENV{TEST_VERBOSE}; |
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# Convert TEST_VERBOSE=y into numeric value |
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$ENV{TEST_VERBOSE} = 3 if $ENV{TEST_VERBOSE} !~ /^\d+$/; |
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return $ENV{TEST_VERBOSE}; |
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} |
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181
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=head2 set_stow_dir([$dir]) |
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183
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Sets a new stow directory. This allows the use of multiple stow |
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directories within one Stow instance, e.g. |
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186
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$stow->plan_stow('foo'); |
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$stow->set_stow_dir('/different/stow/dir'); |
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$stow->plan_stow('bar'); |
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$stow->process_tasks; |
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191
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If C<$dir> is omitted, uses the value of the C parameter passed |
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to the L constructor. |
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194
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=cut |
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196
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sub set_stow_dir { |
197
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81
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1
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3908
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my $self = shift; |
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140
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my ($dir) = @_; |
199
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81
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100
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174
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if (defined $dir) { |
200
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6
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$self->{dir} = $dir; |
201
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} |
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203
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218
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my $stow_dir = canon_path($self->{dir}); |
204
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81
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238
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my $target = canon_path($self->{target}); |
205
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81
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6040
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$self->{stow_path} = File::Spec->abs2rel($stow_dir, $target); |
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207
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81
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431
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debug(2, "stow dir is $stow_dir"); |
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264
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debug(2, "stow dir path relative to target $target is $self->{stow_path}"); |
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} |
210
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211
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sub init_state { |
212
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78
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78
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0
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141
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my $self = shift; |
213
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214
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# Store conflicts during pre-processing |
215
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144
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$self->{conflicts} = {}; |
216
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188
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$self->{conflict_count} = 0; |
217
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218
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# Store command line packages to stow (-S and -R) |
219
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142
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$self->{pkgs_to_stow} = []; |
220
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221
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# Store command line packages to unstow (-D and -R) |
222
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163
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$self->{pkgs_to_delete} = []; |
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# The following structures are used by the abstractions that allow us to |
225
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# defer operating on the filesystem until after all potential conflicts have |
226
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# been assessed. |
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# $self->{tasks}: list of operations to be performed (in order) |
229
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# each element is a hash ref of the form |
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# { |
231
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# action => ... ('create' or 'remove' or 'move') |
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# type => ... ('link' or 'dir' or 'file') |
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# path => ... (unique) |
234
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# source => ... (only for links) |
235
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# dest => ... (only for moving files) |
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# } |
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$self->{tasks} = []; |
238
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# $self->{dir_task_for}: map a path to the corresponding directory task reference |
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# This structure allows us to quickly determine if a path has an existing |
241
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# directory task associated with it. |
242
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$self->{dir_task_for} = {}; |
243
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# $self->{link_task_for}: map a path to the corresponding directory task reference |
245
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# This structure allows us to quickly determine if a path has an existing |
246
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# directory task associated with it. |
247
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131
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$self->{link_task_for} = {}; |
248
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249
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# N.B.: directory tasks and link tasks are NOT mutually exclusive due |
250
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# to tree splitting (which involves a remove link task followed by |
251
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# a create directory task). |
252
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} |
253
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254
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=head1 METHODS |
255
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256
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=head2 plan_unstow(@packages) |
257
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258
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Plan which symlink/directory creation/removal tasks need to be executed |
259
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in order to unstow the given packages. Any potential conflicts are then |
260
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accessible via L. |
261
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262
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=cut |
263
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264
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sub plan_unstow { |
265
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37
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37
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1
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21323
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my $self = shift; |
266
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37
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111
|
my @packages = @_; |
267
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268
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$self->within_target_do(sub { |
269
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37
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37
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79
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for my $package (@packages) { |
270
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37
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94
|
my $path = join_paths($self->{stow_path}, $package); |
271
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37
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50
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527
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if (not -d $path) { |
272
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0
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0
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error("The stow directory $self->{stow_path} does not contain package $package"); |
273
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|
} |
274
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37
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209
|
debug(2, "Planning unstow of package $package..."); |
275
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37
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100
|
|
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|
91
|
if ($self->{compat}) { |
276
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$self->unstow_contents_orig( |
277
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$self->{stow_path}, |
278
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14
|
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41
|
$package, |
279
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'.', |
280
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); |
281
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} |
282
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else { |
283
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|
$self->unstow_contents( |
284
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|
|
$self->{stow_path}, |
285
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23
|
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72
|
$package, |
286
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'.', |
287
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); |
288
|
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|
|
} |
289
|
37
|
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|
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193
|
debug(2, "Planning unstow of package $package... done"); |
290
|
37
|
|
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|
|
102
|
$self->{action_count}++; |
291
|
|
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|
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|
|
} |
292
|
37
|
|
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|
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228
|
}); |
293
|
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|
|
} |
294
|
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295
|
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|
|
=head2 plan_stow(@packages) |
296
|
|
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297
|
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|
|
Plan which symlink/directory creation/removal tasks need to be executed |
298
|
|
|
|
|
|
|
in order to stow the given packages. Any potential conflicts are then |
299
|
|
|
|
|
|
|
accessible via L. |
300
|
|
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|
|
|
|
|
301
|
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|
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|
|
=cut |
302
|
|
|
|
|
|
|
|
303
|
|
|
|
|
|
|
sub plan_stow { |
304
|
39
|
|
|
39
|
1
|
14239
|
my $self = shift; |
305
|
39
|
|
|
|
|
119
|
my @packages = @_; |
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
$self->within_target_do(sub { |
308
|
39
|
|
|
39
|
|
82
|
for my $package (@packages) { |
309
|
41
|
|
|
|
|
104
|
my $path = join_paths($self->{stow_path}, $package); |
310
|
41
|
50
|
|
|
|
591
|
if (not -d $path) { |
311
|
0
|
|
|
|
|
0
|
error("The stow directory $self->{stow_path} does not contain package $package"); |
312
|
|
|
|
|
|
|
} |
313
|
41
|
|
|
|
|
256
|
debug(2, "Planning stow of package $package..."); |
314
|
|
|
|
|
|
|
$self->stow_contents( |
315
|
|
|
|
|
|
|
$self->{stow_path}, |
316
|
41
|
|
|
|
|
145
|
$package, |
317
|
|
|
|
|
|
|
'.', |
318
|
|
|
|
|
|
|
$path, # source from target |
319
|
|
|
|
|
|
|
); |
320
|
41
|
|
|
|
|
164
|
debug(2, "Planning stow of package $package... done"); |
321
|
41
|
|
|
|
|
92
|
$self->{action_count}++; |
322
|
|
|
|
|
|
|
} |
323
|
39
|
|
|
|
|
248
|
}); |
324
|
|
|
|
|
|
|
} |
325
|
|
|
|
|
|
|
|
326
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
327
|
|
|
|
|
|
|
# Name : within_target_do() |
328
|
|
|
|
|
|
|
# Purpose : execute code within target directory, preserving cwd |
329
|
|
|
|
|
|
|
# Parameters: $code => anonymous subroutine to execute within target dir |
330
|
|
|
|
|
|
|
# Returns : n/a |
331
|
|
|
|
|
|
|
# Throws : n/a |
332
|
|
|
|
|
|
|
# Comments : This is done to ensure that the consumer of the Stow interface |
333
|
|
|
|
|
|
|
# : doesn't have to worry about (a) what their cwd is, and |
334
|
|
|
|
|
|
|
# : (b) that their cwd might change. |
335
|
|
|
|
|
|
|
#============================================================================ |
336
|
|
|
|
|
|
|
sub within_target_do { |
337
|
121
|
|
|
121
|
0
|
189
|
my $self = shift; |
338
|
121
|
|
|
|
|
204
|
my ($code) = @_; |
339
|
|
|
|
|
|
|
|
340
|
121
|
|
|
|
|
1009
|
my $cwd = getcwd(); |
341
|
|
|
|
|
|
|
chdir($self->{target}) |
342
|
121
|
50
|
|
|
|
1041
|
or error("Cannot chdir to target tree: $self->{target} ($!)"); |
343
|
121
|
|
|
|
|
1013
|
debug(3, "cwd now $self->{target}"); |
344
|
|
|
|
|
|
|
|
345
|
121
|
|
|
|
|
370
|
$self->$code(); |
346
|
|
|
|
|
|
|
|
347
|
121
|
|
|
|
|
374
|
restore_cwd($cwd); |
348
|
121
|
|
|
|
|
501
|
debug(3, "cwd restored to $cwd"); |
349
|
|
|
|
|
|
|
} |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
352
|
|
|
|
|
|
|
# Name : stow_contents() |
353
|
|
|
|
|
|
|
# Purpose : stow the contents of the given directory |
354
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
355
|
|
|
|
|
|
|
# : to the stow dir containing the package to be stowed |
356
|
|
|
|
|
|
|
# : $package => the package whose contents are being stowed |
357
|
|
|
|
|
|
|
# : $target => subpath relative to package directory which needs |
358
|
|
|
|
|
|
|
# : stowing as a symlink at subpath relative to target |
359
|
|
|
|
|
|
|
# : directory. |
360
|
|
|
|
|
|
|
# : $source => relative path from the (sub)dir of target |
361
|
|
|
|
|
|
|
# : to symlink source |
362
|
|
|
|
|
|
|
# Returns : n/a |
363
|
|
|
|
|
|
|
# Throws : a fatal error if directory cannot be read |
364
|
|
|
|
|
|
|
# Comments : stow_node() and stow_contents() are mutually recursive. |
365
|
|
|
|
|
|
|
# : $source and $target are used for creating the symlink |
366
|
|
|
|
|
|
|
# : $path is used for folding/unfolding trees as necessary |
367
|
|
|
|
|
|
|
#============================================================================ |
368
|
|
|
|
|
|
|
sub stow_contents { |
369
|
94
|
|
|
94
|
0
|
143
|
my $self = shift; |
370
|
94
|
|
|
|
|
202
|
my ($stow_path, $package, $target, $source) = @_; |
371
|
|
|
|
|
|
|
|
372
|
94
|
|
|
|
|
190
|
my $path = join_paths($stow_path, $package, $target); |
373
|
|
|
|
|
|
|
|
374
|
94
|
100
|
|
|
|
225
|
return if $self->should_skip_target_which_is_stow_dir($target); |
375
|
|
|
|
|
|
|
|
376
|
93
|
|
|
|
|
698
|
my $cwd = getcwd(); |
377
|
93
|
|
|
|
|
331
|
my $msg = "Stowing contents of $path (cwd=$cwd)"; |
378
|
93
|
|
|
|
|
1034
|
$msg =~ s!$ENV{HOME}(/|$)!~$1!g; |
379
|
93
|
|
|
|
|
308
|
debug(3, $msg); |
380
|
93
|
|
|
|
|
289
|
debug(4, " => $source"); |
381
|
|
|
|
|
|
|
|
382
|
93
|
50
|
|
|
|
1180
|
error("stow_contents() called with non-directory path: $path") |
383
|
|
|
|
|
|
|
unless -d $path; |
384
|
93
|
50
|
|
|
|
344
|
error("stow_contents() called with non-directory target: $target") |
385
|
|
|
|
|
|
|
unless $self->is_a_node($target); |
386
|
|
|
|
|
|
|
|
387
|
93
|
50
|
|
|
|
2712
|
opendir my $DIR, $path |
388
|
|
|
|
|
|
|
or error("cannot read directory: $path ($!)"); |
389
|
93
|
|
|
|
|
1747
|
my @listing = readdir $DIR; |
390
|
93
|
|
|
|
|
900
|
closedir $DIR; |
391
|
|
|
|
|
|
|
|
392
|
|
|
|
|
|
|
NODE: |
393
|
93
|
|
|
|
|
251
|
for my $node (@listing) { |
394
|
326
|
100
|
|
|
|
651
|
next NODE if $node eq '.'; |
395
|
233
|
100
|
|
|
|
581
|
next NODE if $node eq '..'; |
396
|
140
|
|
|
|
|
394
|
my $node_target = join_paths($target, $node); |
397
|
140
|
100
|
|
|
|
396
|
next NODE if $self->ignore($stow_path, $package, $node_target); |
398
|
|
|
|
|
|
|
|
399
|
124
|
100
|
|
|
|
297
|
if ($self->{dotfiles}) { |
400
|
7
|
|
|
|
|
18
|
my $adj_node_target = adjust_dotfile($node_target); |
401
|
7
|
|
|
|
|
24
|
debug(4, " Adjusting: $node_target => $adj_node_target"); |
402
|
7
|
|
|
|
|
11
|
$node_target = $adj_node_target; |
403
|
|
|
|
|
|
|
} |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
$self->stow_node( |
406
|
124
|
|
|
|
|
344
|
$stow_path, |
407
|
|
|
|
|
|
|
$package, |
408
|
|
|
|
|
|
|
$node_target, # target |
409
|
|
|
|
|
|
|
join_paths($source, $node), # source |
410
|
|
|
|
|
|
|
); |
411
|
|
|
|
|
|
|
} |
412
|
|
|
|
|
|
|
} |
413
|
|
|
|
|
|
|
|
414
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
415
|
|
|
|
|
|
|
# Name : stow_node() |
416
|
|
|
|
|
|
|
# Purpose : stow the given node |
417
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
418
|
|
|
|
|
|
|
# : to the stow dir containing the node to be stowed |
419
|
|
|
|
|
|
|
# : $package => the package containing the node being stowed |
420
|
|
|
|
|
|
|
# : $target => subpath relative to package directory of node which |
421
|
|
|
|
|
|
|
# : needs stowing as a symlink at subpath relative to |
422
|
|
|
|
|
|
|
# : target directory. |
423
|
|
|
|
|
|
|
# : $source => relative path to symlink source from the dir of target |
424
|
|
|
|
|
|
|
# Returns : n/a |
425
|
|
|
|
|
|
|
# Throws : fatal exception if a conflict arises |
426
|
|
|
|
|
|
|
# Comments : stow_node() and stow_contents() are mutually recursive |
427
|
|
|
|
|
|
|
# : $source and $target are used for creating the symlink |
428
|
|
|
|
|
|
|
# : $path is used for folding/unfolding trees as necessary |
429
|
|
|
|
|
|
|
#============================================================================ |
430
|
|
|
|
|
|
|
sub stow_node { |
431
|
124
|
|
|
124
|
0
|
192
|
my $self = shift; |
432
|
124
|
|
|
|
|
245
|
my ($stow_path, $package, $target, $source) = @_; |
433
|
|
|
|
|
|
|
|
434
|
124
|
|
|
|
|
237
|
my $path = join_paths($stow_path, $package, $target); |
435
|
|
|
|
|
|
|
|
436
|
124
|
|
|
|
|
450
|
debug(3, "Stowing $stow_path / $package / $target"); |
437
|
124
|
|
|
|
|
317
|
debug(4, " => $source"); |
438
|
|
|
|
|
|
|
|
439
|
|
|
|
|
|
|
# Don't try to stow absolute symlinks (they can't be unstowed) |
440
|
124
|
50
|
|
|
|
1661
|
if (-l $source) { |
441
|
0
|
|
|
|
|
0
|
my $second_source = $self->read_a_link($source); |
442
|
0
|
0
|
|
|
|
0
|
if ($second_source =~ m{\A/}) { |
443
|
0
|
|
|
|
|
0
|
$self->conflict( |
444
|
|
|
|
|
|
|
'stow', |
445
|
|
|
|
|
|
|
$package, |
446
|
|
|
|
|
|
|
"source is an absolute symlink $source => $second_source" |
447
|
|
|
|
|
|
|
); |
448
|
0
|
|
|
|
|
0
|
debug(3, "Absolute symlinks cannot be unstowed"); |
449
|
0
|
|
|
|
|
0
|
return; |
450
|
|
|
|
|
|
|
} |
451
|
|
|
|
|
|
|
} |
452
|
|
|
|
|
|
|
|
453
|
|
|
|
|
|
|
# Does the target already exist? |
454
|
124
|
100
|
100
|
|
|
545
|
if ($self->is_a_link($target)) { |
|
|
100
|
100
|
|
|
|
|
|
|
100
|
|
|
|
|
|
455
|
|
|
|
|
|
|
# Where is the link pointing? |
456
|
19
|
|
|
|
|
53
|
my $existing_source = $self->read_a_link($target); |
457
|
19
|
50
|
|
|
|
49
|
if (not $existing_source) { |
458
|
0
|
|
|
|
|
0
|
error("Could not read link: $target"); |
459
|
|
|
|
|
|
|
} |
460
|
19
|
|
|
|
|
76
|
debug(4, " Evaluate existing link: $target => $existing_source"); |
461
|
|
|
|
|
|
|
|
462
|
|
|
|
|
|
|
# Does it point to a node under any stow directory? |
463
|
19
|
|
|
|
|
67
|
my ($existing_path, $existing_stow_path, $existing_package) = |
464
|
|
|
|
|
|
|
$self->find_stowed_path($target, $existing_source); |
465
|
19
|
100
|
|
|
|
46
|
if (not $existing_path) { |
466
|
1
|
|
|
|
|
9
|
$self->conflict( |
467
|
|
|
|
|
|
|
'stow', |
468
|
|
|
|
|
|
|
$package, |
469
|
|
|
|
|
|
|
"existing target is not owned by stow: $target" |
470
|
|
|
|
|
|
|
); |
471
|
1
|
|
|
|
|
3
|
return; # XXX # |
472
|
|
|
|
|
|
|
} |
473
|
|
|
|
|
|
|
|
474
|
|
|
|
|
|
|
# Does the existing $target actually point to anything? |
475
|
18
|
100
|
|
|
|
52
|
if ($self->is_a_node($existing_path)) { |
476
|
17
|
100
|
66
|
|
|
71
|
if ($existing_source eq $source) { |
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
477
|
5
|
|
|
|
|
36
|
debug(2, "--- Skipping $target as it already points to $source"); |
478
|
|
|
|
|
|
|
} |
479
|
|
|
|
|
|
|
elsif ($self->defer($target)) { |
480
|
1
|
|
|
|
|
5
|
debug(2, "--- Deferring installation of: $target"); |
481
|
|
|
|
|
|
|
} |
482
|
|
|
|
|
|
|
elsif ($self->override($target)) { |
483
|
1
|
|
|
|
|
8
|
debug(2, "--- Overriding installation of: $target"); |
484
|
1
|
|
|
|
|
4
|
$self->do_unlink($target); |
485
|
1
|
|
|
|
|
3
|
$self->do_link($source, $target); |
486
|
|
|
|
|
|
|
} |
487
|
|
|
|
|
|
|
elsif ($self->is_a_dir(join_paths(parent($target), $existing_source)) && |
488
|
|
|
|
|
|
|
$self->is_a_dir(join_paths(parent($target), $source)) ) { |
489
|
|
|
|
|
|
|
|
490
|
|
|
|
|
|
|
# If the existing link points to a directory, |
491
|
|
|
|
|
|
|
# and the proposed new link points to a directory, |
492
|
|
|
|
|
|
|
# then we can unfold (split open) the tree at that point |
493
|
|
|
|
|
|
|
|
494
|
9
|
|
|
|
|
38
|
debug(2, "--- Unfolding $target which was already owned by $existing_package"); |
495
|
9
|
|
|
|
|
31
|
$self->do_unlink($target); |
496
|
9
|
|
|
|
|
27
|
$self->do_mkdir($target); |
497
|
9
|
|
|
|
|
24
|
$self->stow_contents( |
498
|
|
|
|
|
|
|
$existing_stow_path, |
499
|
|
|
|
|
|
|
$existing_package, |
500
|
|
|
|
|
|
|
$target, |
501
|
|
|
|
|
|
|
join_paths('..', $existing_source), |
502
|
|
|
|
|
|
|
); |
503
|
|
|
|
|
|
|
$self->stow_contents( |
504
|
|
|
|
|
|
|
$self->{stow_path}, |
505
|
9
|
|
|
|
|
38
|
$package, |
506
|
|
|
|
|
|
|
$target, |
507
|
|
|
|
|
|
|
join_paths('..', $source), |
508
|
|
|
|
|
|
|
); |
509
|
|
|
|
|
|
|
} |
510
|
|
|
|
|
|
|
else { |
511
|
1
|
|
|
|
|
8
|
$self->conflict( |
512
|
|
|
|
|
|
|
'stow', |
513
|
|
|
|
|
|
|
$package, |
514
|
|
|
|
|
|
|
"existing target is stowed to a different package: " |
515
|
|
|
|
|
|
|
. "$target => $existing_source" |
516
|
|
|
|
|
|
|
); |
517
|
|
|
|
|
|
|
} |
518
|
|
|
|
|
|
|
} |
519
|
|
|
|
|
|
|
else { |
520
|
|
|
|
|
|
|
# The existing link is invalid, so replace it with a good link |
521
|
1
|
|
|
|
|
5
|
debug(2, "--- replacing invalid link: $path"); |
522
|
1
|
|
|
|
|
4
|
$self->do_unlink($target); |
523
|
1
|
|
|
|
|
3
|
$self->do_link($source, $target); |
524
|
|
|
|
|
|
|
} |
525
|
|
|
|
|
|
|
} |
526
|
|
|
|
|
|
|
elsif ($self->is_a_node($target)) { |
527
|
31
|
|
|
|
|
116
|
debug(4, " Evaluate existing node: $target"); |
528
|
31
|
100
|
|
|
|
81
|
if ($self->is_a_dir($target)) { |
529
|
|
|
|
|
|
|
$self->stow_contents( |
530
|
|
|
|
|
|
|
$self->{stow_path}, |
531
|
25
|
|
|
|
|
65
|
$package, |
532
|
|
|
|
|
|
|
$target, |
533
|
|
|
|
|
|
|
join_paths('..', $source), |
534
|
|
|
|
|
|
|
); |
535
|
|
|
|
|
|
|
} |
536
|
|
|
|
|
|
|
else { |
537
|
6
|
100
|
|
|
|
16
|
if ($self->{adopt}) { |
538
|
2
|
|
|
|
|
13
|
$self->do_mv($target, $path); |
539
|
2
|
|
|
|
|
6
|
$self->do_link($source, $target); |
540
|
|
|
|
|
|
|
} |
541
|
|
|
|
|
|
|
else { |
542
|
4
|
|
|
|
|
14
|
$self->conflict( |
543
|
|
|
|
|
|
|
'stow', |
544
|
|
|
|
|
|
|
$package, |
545
|
|
|
|
|
|
|
"existing target is neither a link nor a directory: $target" |
546
|
|
|
|
|
|
|
); |
547
|
|
|
|
|
|
|
} |
548
|
|
|
|
|
|
|
} |
549
|
|
|
|
|
|
|
} |
550
|
|
|
|
|
|
|
elsif ($self->{'no-folding'} && -d $path && ! -l $path) { |
551
|
10
|
|
|
|
|
45
|
$self->do_mkdir($target); |
552
|
|
|
|
|
|
|
$self->stow_contents( |
553
|
|
|
|
|
|
|
$self->{stow_path}, |
554
|
10
|
|
|
|
|
27
|
$package, |
555
|
|
|
|
|
|
|
$target, |
556
|
|
|
|
|
|
|
join_paths('..', $source), |
557
|
|
|
|
|
|
|
); |
558
|
|
|
|
|
|
|
} |
559
|
|
|
|
|
|
|
else { |
560
|
64
|
|
|
|
|
188
|
$self->do_link($source, $target); |
561
|
|
|
|
|
|
|
} |
562
|
123
|
|
|
|
|
379
|
return; |
563
|
|
|
|
|
|
|
} |
564
|
|
|
|
|
|
|
|
565
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
566
|
|
|
|
|
|
|
# Name : should_skip_target_which_is_stow_dir() |
567
|
|
|
|
|
|
|
# Purpose : determine whether target is a stow directory which should |
568
|
|
|
|
|
|
|
# : not be stowed to or unstowed from |
569
|
|
|
|
|
|
|
# Parameters: $target => relative path to symlink target from the current directory |
570
|
|
|
|
|
|
|
# Returns : true iff target is a stow directory |
571
|
|
|
|
|
|
|
# Throws : n/a |
572
|
|
|
|
|
|
|
# Comments : none |
573
|
|
|
|
|
|
|
#============================================================================ |
574
|
|
|
|
|
|
|
sub should_skip_target_which_is_stow_dir { |
575
|
228
|
|
|
228
|
0
|
322
|
my $self = shift; |
576
|
228
|
|
|
|
|
411
|
my ($target) = @_; |
577
|
|
|
|
|
|
|
|
578
|
|
|
|
|
|
|
# Don't try to remove anything under a stow directory |
579
|
228
|
100
|
|
|
|
492
|
if ($target eq $self->{stow_path}) { |
580
|
3
|
|
|
|
|
34
|
warn "WARNING: skipping target which was current stow directory $target\n"; |
581
|
3
|
|
|
|
|
64
|
return 1; |
582
|
|
|
|
|
|
|
} |
583
|
|
|
|
|
|
|
|
584
|
225
|
100
|
|
|
|
411
|
if ($self->marked_stow_dir($target)) { |
585
|
14
|
|
|
|
|
120
|
warn "WARNING: skipping protected directory $target\n"; |
586
|
14
|
|
|
|
|
257
|
return 1; |
587
|
|
|
|
|
|
|
} |
588
|
|
|
|
|
|
|
|
589
|
211
|
|
|
|
|
782
|
debug(4, "$target not protected"); |
590
|
211
|
|
|
|
|
446
|
return 0; |
591
|
|
|
|
|
|
|
} |
592
|
|
|
|
|
|
|
|
593
|
|
|
|
|
|
|
sub marked_stow_dir { |
594
|
724
|
|
|
724
|
0
|
948
|
my $self = shift; |
595
|
724
|
|
|
|
|
1195
|
my ($target) = @_; |
596
|
724
|
|
|
|
|
1113
|
for my $f (".stow", ".nonstow") { |
597
|
1432
|
100
|
|
|
|
3531
|
if (-e join_paths($target, $f)) { |
598
|
16
|
|
|
|
|
117
|
debug(4, "$target contained $f"); |
599
|
16
|
|
|
|
|
69
|
return 1; |
600
|
|
|
|
|
|
|
} |
601
|
|
|
|
|
|
|
} |
602
|
708
|
|
|
|
|
2472
|
return 0; |
603
|
|
|
|
|
|
|
} |
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
606
|
|
|
|
|
|
|
# Name : unstow_contents_orig() |
607
|
|
|
|
|
|
|
# Purpose : unstow the contents of the given directory |
608
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
609
|
|
|
|
|
|
|
# : to the stow dir containing the package to be unstowed |
610
|
|
|
|
|
|
|
# : $package => the package whose contents are being unstowed |
611
|
|
|
|
|
|
|
# : $target => relative path to symlink target from the current directory |
612
|
|
|
|
|
|
|
# Returns : n/a |
613
|
|
|
|
|
|
|
# Throws : a fatal error if directory cannot be read |
614
|
|
|
|
|
|
|
# Comments : unstow_node_orig() and unstow_contents_orig() are mutually recursive |
615
|
|
|
|
|
|
|
# : Here we traverse the target tree, rather than the source tree. |
616
|
|
|
|
|
|
|
#============================================================================ |
617
|
|
|
|
|
|
|
sub unstow_contents_orig { |
618
|
88
|
|
|
88
|
0
|
144
|
my $self = shift; |
619
|
88
|
|
|
|
|
179
|
my ($stow_path, $package, $target) = @_; |
620
|
|
|
|
|
|
|
|
621
|
88
|
|
|
|
|
210
|
my $path = join_paths($stow_path, $package, $target); |
622
|
|
|
|
|
|
|
|
623
|
88
|
100
|
|
|
|
207
|
return if $self->should_skip_target_which_is_stow_dir($target); |
624
|
|
|
|
|
|
|
|
625
|
73
|
|
|
|
|
541
|
my $cwd = getcwd(); |
626
|
73
|
|
|
|
|
289
|
my $msg = "Unstowing from $target (compat mode, cwd=$cwd, stow dir=$self->{stow_path})"; |
627
|
73
|
|
|
|
|
774
|
$msg =~ s!$ENV{HOME}(/|$)!~$1!g; |
628
|
73
|
|
|
|
|
244
|
debug(3, $msg); |
629
|
73
|
|
|
|
|
207
|
debug(4, " source path is $path"); |
630
|
|
|
|
|
|
|
# In compat mode we traverse the target tree not the source tree, |
631
|
|
|
|
|
|
|
# so we're unstowing the contents of /target/foo, there's no |
632
|
|
|
|
|
|
|
# guarantee that the corresponding /stow/mypkg/foo exists. |
633
|
73
|
50
|
|
|
|
863
|
error("unstow_contents_orig() called with non-directory target: $target") |
634
|
|
|
|
|
|
|
unless -d $target; |
635
|
|
|
|
|
|
|
|
636
|
73
|
50
|
|
|
|
1987
|
opendir my $DIR, $target |
637
|
|
|
|
|
|
|
or error("cannot read directory: $target ($!)"); |
638
|
73
|
|
|
|
|
1289
|
my @listing = readdir $DIR; |
639
|
73
|
|
|
|
|
694
|
closedir $DIR; |
640
|
|
|
|
|
|
|
|
641
|
|
|
|
|
|
|
NODE: |
642
|
73
|
|
|
|
|
227
|
for my $node (@listing) { |
643
|
268
|
100
|
|
|
|
547
|
next NODE if $node eq '.'; |
644
|
195
|
100
|
|
|
|
516
|
next NODE if $node eq '..'; |
645
|
122
|
|
|
|
|
313
|
my $node_target = join_paths($target, $node); |
646
|
122
|
50
|
|
|
|
341
|
next NODE if $self->ignore($stow_path, $package, $node_target); |
647
|
122
|
|
|
|
|
324
|
$self->unstow_node_orig($stow_path, $package, $node_target); |
648
|
|
|
|
|
|
|
} |
649
|
|
|
|
|
|
|
} |
650
|
|
|
|
|
|
|
|
651
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
652
|
|
|
|
|
|
|
# Name : unstow_node_orig() |
653
|
|
|
|
|
|
|
# Purpose : unstow the given node |
654
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
655
|
|
|
|
|
|
|
# : to the stow dir containing the node to be stowed |
656
|
|
|
|
|
|
|
# : $package => the package containing the node being stowed |
657
|
|
|
|
|
|
|
# : $target => relative path to symlink target from the current directory |
658
|
|
|
|
|
|
|
# Returns : n/a |
659
|
|
|
|
|
|
|
# Throws : fatal error if a conflict arises |
660
|
|
|
|
|
|
|
# Comments : unstow_node() and unstow_contents() are mutually recursive |
661
|
|
|
|
|
|
|
#============================================================================ |
662
|
|
|
|
|
|
|
sub unstow_node_orig { |
663
|
122
|
|
|
122
|
0
|
184
|
my $self = shift; |
664
|
122
|
|
|
|
|
214
|
my ($stow_path, $package, $target) = @_; |
665
|
|
|
|
|
|
|
|
666
|
122
|
|
|
|
|
282
|
my $path = join_paths($stow_path, $package, $target); |
667
|
|
|
|
|
|
|
|
668
|
122
|
|
|
|
|
347
|
debug(3, "Unstowing $target (compat mode)"); |
669
|
122
|
|
|
|
|
290
|
debug(4, " source path is $path"); |
670
|
|
|
|
|
|
|
|
671
|
|
|
|
|
|
|
# Does the target exist? |
672
|
122
|
100
|
|
|
|
289
|
if ($self->is_a_link($target)) { |
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
673
|
47
|
|
|
|
|
176
|
debug(4, " Evaluate existing link: $target"); |
674
|
|
|
|
|
|
|
|
675
|
|
|
|
|
|
|
# Where is the link pointing? |
676
|
47
|
|
|
|
|
103
|
my $existing_source = $self->read_a_link($target); |
677
|
47
|
50
|
|
|
|
92
|
if (not $existing_source) { |
678
|
0
|
|
|
|
|
0
|
error("Could not read link: $target"); |
679
|
|
|
|
|
|
|
} |
680
|
|
|
|
|
|
|
|
681
|
|
|
|
|
|
|
# Does it point to a node under any stow directory? |
682
|
47
|
|
|
|
|
145
|
my ($existing_path, $existing_stow_path, $existing_package) = |
683
|
|
|
|
|
|
|
$self->find_stowed_path($target, $existing_source); |
684
|
47
|
100
|
|
|
|
95
|
if (not $existing_path) { |
685
|
|
|
|
|
|
|
# We're traversing the target tree not the package tree, |
686
|
|
|
|
|
|
|
# so we definitely expect to find stuff not owned by stow. |
687
|
|
|
|
|
|
|
# Therefore we can't flag a conflict. |
688
|
14
|
|
|
|
|
37
|
return; # XXX # |
689
|
|
|
|
|
|
|
} |
690
|
|
|
|
|
|
|
|
691
|
|
|
|
|
|
|
# Does the existing $target actually point to anything? |
692
|
33
|
100
|
|
|
|
441
|
if (-e $existing_path) { |
693
|
|
|
|
|
|
|
# Does link point to the right place? |
694
|
32
|
100
|
|
|
|
146
|
if ($existing_path eq $path) { |
|
|
100
|
|
|
|
|
|
695
|
4
|
|
|
|
|
13
|
$self->do_unlink($target); |
696
|
|
|
|
|
|
|
} |
697
|
|
|
|
|
|
|
elsif ($self->override($target)) { |
698
|
1
|
|
|
|
|
7
|
debug(2, "--- overriding installation of: $target"); |
699
|
1
|
|
|
|
|
6
|
$self->do_unlink($target); |
700
|
|
|
|
|
|
|
} |
701
|
|
|
|
|
|
|
# else leave it alone |
702
|
|
|
|
|
|
|
} |
703
|
|
|
|
|
|
|
else { |
704
|
1
|
|
|
|
|
7
|
debug(2, "--- removing invalid link into a stow directory: $path"); |
705
|
1
|
|
|
|
|
3
|
$self->do_unlink($target); |
706
|
|
|
|
|
|
|
} |
707
|
|
|
|
|
|
|
} |
708
|
|
|
|
|
|
|
elsif (-d $target) { |
709
|
74
|
|
|
|
|
308
|
$self->unstow_contents_orig($stow_path, $package, $target); |
710
|
|
|
|
|
|
|
|
711
|
|
|
|
|
|
|
# This action may have made the parent directory foldable |
712
|
74
|
100
|
|
|
|
179
|
if (my $parent = $self->foldable($target)) { |
713
|
3
|
|
|
|
|
16
|
$self->fold_tree($target, $parent); |
714
|
|
|
|
|
|
|
} |
715
|
|
|
|
|
|
|
} |
716
|
|
|
|
|
|
|
elsif (-e $target) { |
717
|
1
|
|
|
|
|
10
|
$self->conflict( |
718
|
|
|
|
|
|
|
'unstow', |
719
|
|
|
|
|
|
|
$package, |
720
|
|
|
|
|
|
|
"existing target is neither a link nor a directory: $target", |
721
|
|
|
|
|
|
|
); |
722
|
|
|
|
|
|
|
} |
723
|
|
|
|
|
|
|
else { |
724
|
0
|
|
|
|
|
0
|
debug(2, "$target did not exist to be unstowed"); |
725
|
|
|
|
|
|
|
} |
726
|
108
|
|
|
|
|
293
|
return; |
727
|
|
|
|
|
|
|
} |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
730
|
|
|
|
|
|
|
# Name : unstow_contents() |
731
|
|
|
|
|
|
|
# Purpose : unstow the contents of the given directory |
732
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
733
|
|
|
|
|
|
|
# : to the stow dir containing the package to be unstowed |
734
|
|
|
|
|
|
|
# : $package => the package whose contents are being unstowed |
735
|
|
|
|
|
|
|
# : $target => relative path to symlink target from the current directory |
736
|
|
|
|
|
|
|
# Returns : n/a |
737
|
|
|
|
|
|
|
# Throws : a fatal error if directory cannot be read |
738
|
|
|
|
|
|
|
# Comments : unstow_node() and unstow_contents() are mutually recursive |
739
|
|
|
|
|
|
|
# : Here we traverse the source tree, rather than the target tree. |
740
|
|
|
|
|
|
|
#============================================================================ |
741
|
|
|
|
|
|
|
sub unstow_contents { |
742
|
46
|
|
|
46
|
0
|
89
|
my $self = shift; |
743
|
46
|
|
|
|
|
101
|
my ($stow_path, $package, $target) = @_; |
744
|
|
|
|
|
|
|
|
745
|
46
|
|
|
|
|
108
|
my $path = join_paths($stow_path, $package, $target); |
746
|
|
|
|
|
|
|
|
747
|
46
|
100
|
|
|
|
109
|
return if $self->should_skip_target_which_is_stow_dir($target); |
748
|
|
|
|
|
|
|
|
749
|
45
|
|
|
|
|
338
|
my $cwd = getcwd(); |
750
|
45
|
|
|
|
|
199
|
my $msg = "Unstowing from $target (cwd=$cwd, stow dir=$self->{stow_path})"; |
751
|
45
|
|
|
|
|
408
|
$msg =~ s!$ENV{HOME}/!~/!g; |
752
|
45
|
|
|
|
|
154
|
debug(3, $msg); |
753
|
45
|
|
|
|
|
128
|
debug(4, " source path is $path"); |
754
|
|
|
|
|
|
|
# We traverse the source tree not the target tree, so $path must exist. |
755
|
45
|
50
|
|
|
|
554
|
error("unstow_contents() called with non-directory path: $path") |
756
|
|
|
|
|
|
|
unless -d $path; |
757
|
|
|
|
|
|
|
# When called at the top level, $target should exist. And |
758
|
|
|
|
|
|
|
# unstow_node() should only call this via mutual recursion if |
759
|
|
|
|
|
|
|
# $target exists. |
760
|
45
|
50
|
|
|
|
171
|
error("unstow_contents() called with invalid target: $target") |
761
|
|
|
|
|
|
|
unless $self->is_a_node($target); |
762
|
|
|
|
|
|
|
|
763
|
45
|
50
|
|
|
|
1316
|
opendir my $DIR, $path |
764
|
|
|
|
|
|
|
or error("cannot read directory: $path ($!)"); |
765
|
45
|
|
|
|
|
787
|
my @listing = readdir $DIR; |
766
|
45
|
|
|
|
|
408
|
closedir $DIR; |
767
|
|
|
|
|
|
|
|
768
|
|
|
|
|
|
|
NODE: |
769
|
45
|
|
|
|
|
122
|
for my $node (@listing) { |
770
|
154
|
100
|
|
|
|
329
|
next NODE if $node eq '.'; |
771
|
109
|
100
|
|
|
|
203
|
next NODE if $node eq '..'; |
772
|
64
|
|
|
|
|
176
|
my $node_target = join_paths($target, $node); |
773
|
64
|
100
|
|
|
|
180
|
next NODE if $self->ignore($stow_path, $package, $node_target); |
774
|
|
|
|
|
|
|
|
775
|
56
|
100
|
|
|
|
149
|
if ($self->{dotfiles}) { |
776
|
5
|
|
|
|
|
12
|
my $adj_node_target = adjust_dotfile($node_target); |
777
|
5
|
|
|
|
|
18
|
debug(4, " Adjusting: $node_target => $adj_node_target"); |
778
|
5
|
|
|
|
|
8
|
$node_target = $adj_node_target; |
779
|
|
|
|
|
|
|
} |
780
|
|
|
|
|
|
|
|
781
|
56
|
|
|
|
|
187
|
$self->unstow_node($stow_path, $package, $node_target); |
782
|
|
|
|
|
|
|
} |
783
|
45
|
50
|
|
|
|
534
|
if (-d $target) { |
784
|
45
|
|
|
|
|
167
|
$self->cleanup_invalid_links($target); |
785
|
|
|
|
|
|
|
} |
786
|
|
|
|
|
|
|
} |
787
|
|
|
|
|
|
|
|
788
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
789
|
|
|
|
|
|
|
# Name : unstow_node() |
790
|
|
|
|
|
|
|
# Purpose : unstow the given node |
791
|
|
|
|
|
|
|
# Parameters: $stow_path => relative path from current (i.e. target) directory |
792
|
|
|
|
|
|
|
# : to the stow dir containing the node to be stowed |
793
|
|
|
|
|
|
|
# : $package => the package containing the node being unstowed |
794
|
|
|
|
|
|
|
# : $target => relative path to symlink target from the current directory |
795
|
|
|
|
|
|
|
# Returns : n/a |
796
|
|
|
|
|
|
|
# Throws : fatal error if a conflict arises |
797
|
|
|
|
|
|
|
# Comments : unstow_node() and unstow_contents() are mutually recursive |
798
|
|
|
|
|
|
|
#============================================================================ |
799
|
|
|
|
|
|
|
sub unstow_node { |
800
|
56
|
|
|
56
|
0
|
111
|
my $self = shift; |
801
|
56
|
|
|
|
|
113
|
my ($stow_path, $package, $target) = @_; |
802
|
|
|
|
|
|
|
|
803
|
56
|
|
|
|
|
135
|
my $path = join_paths($stow_path, $package, $target); |
804
|
|
|
|
|
|
|
|
805
|
56
|
|
|
|
|
178
|
debug(3, "Unstowing $path"); |
806
|
56
|
|
|
|
|
154
|
debug(4, " target is $target"); |
807
|
|
|
|
|
|
|
|
808
|
|
|
|
|
|
|
# Does the target exist? |
809
|
56
|
100
|
|
|
|
132
|
if ($self->is_a_link($target)) { |
|
|
100
|
|
|
|
|
|
810
|
27
|
|
|
|
|
78
|
debug(4, " Evaluate existing link: $target"); |
811
|
|
|
|
|
|
|
|
812
|
|
|
|
|
|
|
# Where is the link pointing? |
813
|
27
|
|
|
|
|
63
|
my $existing_source = $self->read_a_link($target); |
814
|
27
|
50
|
|
|
|
57
|
if (not $existing_source) { |
815
|
0
|
|
|
|
|
0
|
error("Could not read link: $target"); |
816
|
|
|
|
|
|
|
} |
817
|
|
|
|
|
|
|
|
818
|
27
|
50
|
|
|
|
70
|
if ($existing_source =~ m{\A/}) { |
819
|
0
|
|
|
|
|
0
|
warn "Ignoring an absolute symlink: $target => $existing_source\n"; |
820
|
0
|
|
|
|
|
0
|
return; # XXX # |
821
|
|
|
|
|
|
|
} |
822
|
|
|
|
|
|
|
|
823
|
|
|
|
|
|
|
# Does it point to a node under any stow directory? |
824
|
27
|
|
|
|
|
74
|
my ($existing_path, $existing_stow_path, $existing_package) = |
825
|
|
|
|
|
|
|
$self->find_stowed_path($target, $existing_source); |
826
|
27
|
100
|
|
|
|
66
|
if (not $existing_path) { |
827
|
1
|
|
|
|
|
9
|
$self->conflict( |
828
|
|
|
|
|
|
|
'unstow', |
829
|
|
|
|
|
|
|
$package, |
830
|
|
|
|
|
|
|
"existing target is not owned by stow: $target => $existing_source" |
831
|
|
|
|
|
|
|
); |
832
|
1
|
|
|
|
|
3
|
return; # XXX # |
833
|
|
|
|
|
|
|
} |
834
|
|
|
|
|
|
|
|
835
|
|
|
|
|
|
|
# Does the existing $target actually point to anything? |
836
|
26
|
100
|
|
|
|
355
|
if (-e $existing_path) { |
837
|
|
|
|
|
|
|
# Does link points to the right place? |
838
|
|
|
|
|
|
|
|
839
|
|
|
|
|
|
|
# Adjust for dotfile if necessary. |
840
|
25
|
100
|
|
|
|
85
|
if ($self->{dotfiles}) { |
841
|
5
|
|
|
|
|
16
|
$existing_path = adjust_dotfile($existing_path); |
842
|
|
|
|
|
|
|
} |
843
|
|
|
|
|
|
|
|
844
|
25
|
100
|
|
|
|
59
|
if ($existing_path eq $path) { |
845
|
22
|
|
|
|
|
72
|
$self->do_unlink($target); |
846
|
|
|
|
|
|
|
} |
847
|
|
|
|
|
|
|
|
848
|
|
|
|
|
|
|
# XXX we quietly ignore links that are stowed to a different |
849
|
|
|
|
|
|
|
# package. |
850
|
|
|
|
|
|
|
|
851
|
|
|
|
|
|
|
#elsif (defer($target)) { |
852
|
|
|
|
|
|
|
# debug(2, "--- deferring to installation of: $target"); |
853
|
|
|
|
|
|
|
#} |
854
|
|
|
|
|
|
|
#elsif ($self->override($target)) { |
855
|
|
|
|
|
|
|
# debug(2, "--- overriding installation of: $target"); |
856
|
|
|
|
|
|
|
# $self->do_unlink($target); |
857
|
|
|
|
|
|
|
#} |
858
|
|
|
|
|
|
|
#else { |
859
|
|
|
|
|
|
|
# $self->conflict( |
860
|
|
|
|
|
|
|
# 'unstow', |
861
|
|
|
|
|
|
|
# $package, |
862
|
|
|
|
|
|
|
# "existing target is stowed to a different package: " |
863
|
|
|
|
|
|
|
# . "$target => $existing_source" |
864
|
|
|
|
|
|
|
# ); |
865
|
|
|
|
|
|
|
#} |
866
|
|
|
|
|
|
|
} |
867
|
|
|
|
|
|
|
else { |
868
|
1
|
|
|
|
|
13
|
debug(2, "--- removing invalid link into a stow directory: $path"); |
869
|
1
|
|
|
|
|
6
|
$self->do_unlink($target); |
870
|
|
|
|
|
|
|
} |
871
|
|
|
|
|
|
|
} |
872
|
|
|
|
|
|
|
elsif (-e $target) { |
873
|
24
|
|
|
|
|
107
|
debug(4, " Evaluate existing node: $target"); |
874
|
24
|
100
|
|
|
|
271
|
if (-d $target) { |
875
|
23
|
|
|
|
|
120
|
$self->unstow_contents($stow_path, $package, $target); |
876
|
|
|
|
|
|
|
|
877
|
|
|
|
|
|
|
# This action may have made the parent directory foldable |
878
|
23
|
100
|
|
|
|
67
|
if (my $parent = $self->foldable($target)) { |
879
|
4
|
|
|
|
|
14
|
$self->fold_tree($target, $parent); |
880
|
|
|
|
|
|
|
} |
881
|
|
|
|
|
|
|
} |
882
|
|
|
|
|
|
|
else { |
883
|
1
|
|
|
|
|
9
|
$self->conflict( |
884
|
|
|
|
|
|
|
'unstow', |
885
|
|
|
|
|
|
|
$package, |
886
|
|
|
|
|
|
|
"existing target is neither a link nor a directory: $target", |
887
|
|
|
|
|
|
|
); |
888
|
|
|
|
|
|
|
} |
889
|
|
|
|
|
|
|
} |
890
|
|
|
|
|
|
|
else { |
891
|
5
|
|
|
|
|
35
|
debug(2, "$target did not exist to be unstowed"); |
892
|
|
|
|
|
|
|
} |
893
|
55
|
|
|
|
|
140
|
return; |
894
|
|
|
|
|
|
|
} |
895
|
|
|
|
|
|
|
|
896
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
897
|
|
|
|
|
|
|
# Name : path_owned_by_package() |
898
|
|
|
|
|
|
|
# Purpose : determine whether the given link points to a member of a |
899
|
|
|
|
|
|
|
# : stowed package |
900
|
|
|
|
|
|
|
# Parameters: $target => path to a symbolic link under current directory |
901
|
|
|
|
|
|
|
# : $source => where that link points to |
902
|
|
|
|
|
|
|
# Returns : the package iff link is owned by stow, otherwise '' |
903
|
|
|
|
|
|
|
# Throws : n/a |
904
|
|
|
|
|
|
|
# Comments : lossy wrapper around find_stowed_path() |
905
|
|
|
|
|
|
|
#============================================================================ |
906
|
|
|
|
|
|
|
sub path_owned_by_package { |
907
|
29
|
|
|
29
|
0
|
82
|
my $self = shift; |
908
|
29
|
|
|
|
|
84
|
my ($target, $source) = @_; |
909
|
|
|
|
|
|
|
|
910
|
29
|
|
|
|
|
78
|
my ($path, $stow_path, $package) = |
911
|
|
|
|
|
|
|
$self->find_stowed_path($target, $source); |
912
|
29
|
|
|
|
|
117
|
return $package; |
913
|
|
|
|
|
|
|
} |
914
|
|
|
|
|
|
|
|
915
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
916
|
|
|
|
|
|
|
# Name : find_stowed_path() |
917
|
|
|
|
|
|
|
# Purpose : determine whether the given link points to a member of a |
918
|
|
|
|
|
|
|
# : stowed package |
919
|
|
|
|
|
|
|
# Parameters: $target => path to a symbolic link under current directory. |
920
|
|
|
|
|
|
|
# : Must share a common prefix with $self->{stow_path} |
921
|
|
|
|
|
|
|
# : $source => where that link points to (needed because link |
922
|
|
|
|
|
|
|
# : might not exist yet due to two-phase approach, |
923
|
|
|
|
|
|
|
# : so we can't just call readlink()). This must be |
924
|
|
|
|
|
|
|
# : expressed relative to (the directory containing) |
925
|
|
|
|
|
|
|
# : $target. |
926
|
|
|
|
|
|
|
# Returns : ($path, $stow_path, $package) where $path and $stow_path are |
927
|
|
|
|
|
|
|
# : relative from the current (i.e. target) directory. $path |
928
|
|
|
|
|
|
|
# : is the full relative path, $stow_path is the relative path |
929
|
|
|
|
|
|
|
# : to the stow directory, and $package is the name of the package. |
930
|
|
|
|
|
|
|
# : or ('', '', '') if link is not owned by stow |
931
|
|
|
|
|
|
|
# Throws : n/a |
932
|
|
|
|
|
|
|
# Comments : Allow for stow dir not being under target dir. |
933
|
|
|
|
|
|
|
# : We could put more logic under here for multiple stow dirs. |
934
|
|
|
|
|
|
|
#============================================================================ |
935
|
|
|
|
|
|
|
sub find_stowed_path { |
936
|
128
|
|
|
128
|
0
|
5445
|
my $self = shift; |
937
|
128
|
|
|
|
|
274
|
my ($target, $source) = @_; |
938
|
|
|
|
|
|
|
|
939
|
|
|
|
|
|
|
# Evaluate softlink relative to its target |
940
|
128
|
|
|
|
|
307
|
my $path = join_paths(parent($target), $source); |
941
|
128
|
|
|
|
|
467
|
debug(4, " is path $path owned by stow?"); |
942
|
|
|
|
|
|
|
|
943
|
|
|
|
|
|
|
# Search for .stow files - this allows us to detect links |
944
|
|
|
|
|
|
|
# owned by stow directories other than the current one. |
945
|
128
|
|
|
|
|
199
|
my $dir = ''; |
946
|
128
|
|
|
|
|
481
|
my @path = split m{/+}, $path; |
947
|
128
|
|
|
|
|
401
|
for my $i (0 .. $#path) { |
948
|
499
|
|
|
|
|
874
|
my $part = $path[$i]; |
949
|
499
|
|
|
|
|
1035
|
$dir = join_paths($dir, $part); |
950
|
499
|
100
|
|
|
|
1123
|
if ($self->marked_stow_dir($dir)) { |
951
|
|
|
|
|
|
|
# FIXME - not sure if this can ever happen |
952
|
2
|
50
|
|
|
|
10
|
internal_error("find_stowed_path() called directly on stow dir") |
953
|
|
|
|
|
|
|
if $i == $#path; |
954
|
|
|
|
|
|
|
|
955
|
2
|
|
|
|
|
16
|
debug(4, " yes - $dir was marked as a stow dir"); |
956
|
2
|
|
|
|
|
10
|
my $package = $path[$i + 1]; |
957
|
2
|
|
|
|
|
13
|
return ($path, $dir, $package); |
958
|
|
|
|
|
|
|
} |
959
|
|
|
|
|
|
|
} |
960
|
|
|
|
|
|
|
|
961
|
|
|
|
|
|
|
# If no .stow file was found, we need to find out whether it's |
962
|
|
|
|
|
|
|
# owned by the current stow directory, in which case $path will be |
963
|
|
|
|
|
|
|
# a prefix of $self->{stow_path}. |
964
|
126
|
50
|
25
|
|
|
681
|
if (substr($path, 0, 1) eq '/' xor substr($self->{stow_path}, 0, 1) eq '/') |
965
|
|
|
|
|
|
|
{ |
966
|
0
|
|
|
|
|
0
|
warn "BUG in find_stowed_path? Absolute/relative mismatch between " . |
967
|
|
|
|
|
|
|
"Stow dir $self->{stow_path} and path $path"; |
968
|
|
|
|
|
|
|
} |
969
|
|
|
|
|
|
|
|
970
|
126
|
|
|
|
|
555
|
my @stow_path = split m{/+}, $self->{stow_path}; |
971
|
|
|
|
|
|
|
|
972
|
|
|
|
|
|
|
# Strip off common prefixes until one is empty |
973
|
126
|
|
100
|
|
|
524
|
while (@path && @stow_path) { |
974
|
238
|
100
|
|
|
|
837
|
if ((shift @path) ne (shift @stow_path)) { |
975
|
37
|
|
|
|
|
193
|
debug(4, " no - either $path not under $self->{stow_path} or vice-versa"); |
976
|
37
|
|
|
|
|
153
|
return ('', '', ''); |
977
|
|
|
|
|
|
|
} |
978
|
|
|
|
|
|
|
} |
979
|
|
|
|
|
|
|
|
980
|
89
|
100
|
|
|
|
192
|
if (@stow_path) { # @path must be empty |
981
|
1
|
|
|
|
|
6
|
debug(4, " no - $path is not under $self->{stow_path}"); |
982
|
1
|
|
|
|
|
6
|
return ('', '', ''); |
983
|
|
|
|
|
|
|
} |
984
|
|
|
|
|
|
|
|
985
|
88
|
|
|
|
|
196
|
my $package = shift @path; |
986
|
|
|
|
|
|
|
|
987
|
88
|
|
|
|
|
317
|
debug(4, " yes - by $package in " . join_paths(@path)); |
988
|
88
|
|
|
|
|
356
|
return ($path, $self->{stow_path}, $package); |
989
|
|
|
|
|
|
|
} |
990
|
|
|
|
|
|
|
|
991
|
|
|
|
|
|
|
#===== METHOD ================================================================ |
992
|
|
|
|
|
|
|
# Name : cleanup_invalid_links() |
993
|
|
|
|
|
|
|
# Purpose : clean up invalid links that may block folding |
994
|
|
|
|
|
|
|
# Parameters: $dir => path to directory to check |
995
|
|
|
|
|
|
|
# Returns : n/a |
996
|
|
|
|
|
|
|
# Throws : no exceptions |
997
|
|
|
|
|
|
|
# Comments : removing files from a stowed package is probably a bad practice |
998
|
|
|
|
|
|
|
# : so this kind of clean up is not _really_ stow's responsibility; |
999
|
|
|
|
|
|
|
# : however, failing to clean up can block tree folding, so we'll do |
1000
|
|
|
|
|
|
|
# : it anyway |
1001
|
|
|
|
|
|
|
#============================================================================= |
1002
|
|
|
|
|
|
|
sub cleanup_invalid_links { |
1003
|
48
|
|
|
48
|
0
|
89
|
my $self = shift; |
1004
|
48
|
|
|
|
|
108
|
my ($dir) = @_; |
1005
|
|
|
|
|
|
|
|
1006
|
48
|
50
|
|
|
|
449
|
if (not -d $dir) { |
1007
|
0
|
|
|
|
|
0
|
error("cleanup_invalid_links() called with a non-directory: $dir"); |
1008
|
|
|
|
|
|
|
} |
1009
|
|
|
|
|
|
|
|
1010
|
48
|
50
|
|
|
|
1285
|
opendir my $DIR, $dir |
1011
|
|
|
|
|
|
|
or error("cannot read directory: $dir ($!)"); |
1012
|
48
|
|
|
|
|
939
|
my @listing = readdir $DIR; |
1013
|
48
|
|
|
|
|
470
|
closedir $DIR; |
1014
|
|
|
|
|
|
|
|
1015
|
|
|
|
|
|
|
NODE: |
1016
|
48
|
|
|
|
|
178
|
for my $node (@listing) { |
1017
|
311
|
100
|
|
|
|
745
|
next NODE if $node eq '.'; |
1018
|
263
|
100
|
|
|
|
478
|
next NODE if $node eq '..'; |
1019
|
|
|
|
|
|
|
|
1020
|
215
|
|
|
|
|
577
|
my $node_path = join_paths($dir, $node); |
1021
|
|
|
|
|
|
|
|
1022
|
215
|
100
|
100
|
|
|
2667
|
if (-l $node_path and not exists $self->{link_task_for}{$node_path}) { |
1023
|
|
|
|
|
|
|
|
1024
|
|
|
|
|
|
|
# Where is the link pointing? |
1025
|
|
|
|
|
|
|
# (don't use read_a_link() here) |
1026
|
65
|
|
|
|
|
519
|
my $source = readlink($node_path); |
1027
|
65
|
50
|
|
|
|
181
|
if (not $source) { |
1028
|
0
|
|
|
|
|
0
|
error("Could not read link $node_path"); |
1029
|
|
|
|
|
|
|
} |
1030
|
|
|
|
|
|
|
|
1031
|
65
|
100
|
100
|
|
|
185
|
if ( |
1032
|
|
|
|
|
|
|
not -e join_paths($dir, $source) and # bad link |
1033
|
|
|
|
|
|
|
$self->path_owned_by_package($node_path, $source) # owned by stow |
1034
|
|
|
|
|
|
|
){ |
1035
|
1
|
|
|
|
|
7
|
debug(2, "--- removing stale link: $node_path => " . |
1036
|
|
|
|
|
|
|
join_paths($dir, $source)); |
1037
|
1
|
|
|
|
|
4
|
$self->do_unlink($node_path); |
1038
|
|
|
|
|
|
|
} |
1039
|
|
|
|
|
|
|
} |
1040
|
|
|
|
|
|
|
} |
1041
|
48
|
|
|
|
|
318
|
return; |
1042
|
|
|
|
|
|
|
} |
1043
|
|
|
|
|
|
|
|
1044
|
|
|
|
|
|
|
|
1045
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1046
|
|
|
|
|
|
|
# Name : foldable() |
1047
|
|
|
|
|
|
|
# Purpose : determine whether a tree can be folded |
1048
|
|
|
|
|
|
|
# Parameters: $target => path to a directory |
1049
|
|
|
|
|
|
|
# Returns : path to the parent dir iff the tree can be safely folded |
1050
|
|
|
|
|
|
|
# Throws : n/a |
1051
|
|
|
|
|
|
|
# Comments : the path returned is relative to the parent of $target, |
1052
|
|
|
|
|
|
|
# : that is, it can be used as the source for a replacement symlink |
1053
|
|
|
|
|
|
|
#============================================================================ |
1054
|
|
|
|
|
|
|
sub foldable { |
1055
|
101
|
|
|
101
|
0
|
756
|
my $self = shift; |
1056
|
101
|
|
|
|
|
194
|
my ($target) = @_; |
1057
|
|
|
|
|
|
|
|
1058
|
101
|
|
|
|
|
355
|
debug(3, "--- Is $target foldable?"); |
1059
|
101
|
100
|
|
|
|
271
|
if ($self->{'no-folding'}) { |
1060
|
6
|
|
|
|
|
14
|
debug(3, "--- no because --no-folding enabled"); |
1061
|
6
|
|
|
|
|
18
|
return ''; |
1062
|
|
|
|
|
|
|
} |
1063
|
|
|
|
|
|
|
|
1064
|
95
|
50
|
|
|
|
2356
|
opendir my $DIR, $target |
1065
|
|
|
|
|
|
|
or error(qq{Cannot read directory "$target" ($!)\n}); |
1066
|
95
|
|
|
|
|
1499
|
my @listing = readdir $DIR; |
1067
|
95
|
|
|
|
|
822
|
closedir $DIR; |
1068
|
|
|
|
|
|
|
|
1069
|
95
|
|
|
|
|
237
|
my $parent = ''; |
1070
|
|
|
|
|
|
|
NODE: |
1071
|
95
|
|
|
|
|
180
|
for my $node (@listing) { |
1072
|
|
|
|
|
|
|
|
1073
|
180
|
100
|
|
|
|
370
|
next NODE if $node eq '.'; |
1074
|
130
|
100
|
|
|
|
248
|
next NODE if $node eq '..'; |
1075
|
|
|
|
|
|
|
|
1076
|
80
|
|
|
|
|
235
|
my $path = join_paths($target, $node); |
1077
|
|
|
|
|
|
|
|
1078
|
|
|
|
|
|
|
# Skip nodes scheduled for removal |
1079
|
80
|
100
|
|
|
|
231
|
next NODE if not $self->is_a_node($path); |
1080
|
|
|
|
|
|
|
|
1081
|
|
|
|
|
|
|
# If it's not a link then we can't fold its parent |
1082
|
71
|
100
|
|
|
|
185
|
return '' if not $self->is_a_link($path); |
1083
|
|
|
|
|
|
|
|
1084
|
|
|
|
|
|
|
# Where is the link pointing? |
1085
|
32
|
|
|
|
|
89
|
my $source = $self->read_a_link($path); |
1086
|
32
|
50
|
|
|
|
73
|
if (not $source) { |
1087
|
0
|
|
|
|
|
0
|
error("Could not read link $path"); |
1088
|
|
|
|
|
|
|
} |
1089
|
32
|
100
|
|
|
|
89
|
if ($parent eq '') { |
|
|
50
|
|
|
|
|
|
1090
|
25
|
|
|
|
|
66
|
$parent = parent($source) |
1091
|
|
|
|
|
|
|
} |
1092
|
|
|
|
|
|
|
elsif ($parent ne parent($source)) { |
1093
|
7
|
|
|
|
|
48
|
return ''; |
1094
|
|
|
|
|
|
|
} |
1095
|
|
|
|
|
|
|
} |
1096
|
49
|
100
|
|
|
|
262
|
return '' if not $parent; |
1097
|
|
|
|
|
|
|
|
1098
|
|
|
|
|
|
|
# If we get here then all nodes inside $target are links, and those links |
1099
|
|
|
|
|
|
|
# point to nodes inside the same directory. |
1100
|
|
|
|
|
|
|
|
1101
|
|
|
|
|
|
|
# chop of leading '..' to get the path to the common parent directory |
1102
|
|
|
|
|
|
|
# relative to the parent of our $target |
1103
|
10
|
|
|
|
|
45
|
$parent =~ s{\A\.\./}{}; |
1104
|
|
|
|
|
|
|
|
1105
|
|
|
|
|
|
|
# If the resulting path is owned by stow, we can fold it |
1106
|
10
|
100
|
|
|
|
37
|
if ($self->path_owned_by_package($target, $parent)) { |
1107
|
8
|
|
|
|
|
43
|
debug(3, "--- $target is foldable"); |
1108
|
8
|
|
|
|
|
45
|
return $parent; |
1109
|
|
|
|
|
|
|
} |
1110
|
|
|
|
|
|
|
else { |
1111
|
2
|
|
|
|
|
10
|
return ''; |
1112
|
|
|
|
|
|
|
} |
1113
|
|
|
|
|
|
|
} |
1114
|
|
|
|
|
|
|
|
1115
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1116
|
|
|
|
|
|
|
# Name : fold_tree() |
1117
|
|
|
|
|
|
|
# Purpose : fold the given tree |
1118
|
|
|
|
|
|
|
# Parameters: $source => link to the folded tree source |
1119
|
|
|
|
|
|
|
# : $target => directory that we will replace with a link to $source |
1120
|
|
|
|
|
|
|
# Returns : n/a |
1121
|
|
|
|
|
|
|
# Throws : none |
1122
|
|
|
|
|
|
|
# Comments : only called iff foldable() is true so we can remove some checks |
1123
|
|
|
|
|
|
|
#============================================================================ |
1124
|
|
|
|
|
|
|
sub fold_tree { |
1125
|
7
|
|
|
7
|
0
|
13
|
my $self = shift; |
1126
|
7
|
|
|
|
|
24
|
my ($target, $source) = @_; |
1127
|
|
|
|
|
|
|
|
1128
|
7
|
|
|
|
|
29
|
debug(3, "--- Folding tree: $target => $source"); |
1129
|
|
|
|
|
|
|
|
1130
|
7
|
50
|
|
|
|
203
|
opendir my $DIR, $target |
1131
|
|
|
|
|
|
|
or error(qq{Cannot read directory "$target" ($!)\n}); |
1132
|
7
|
|
|
|
|
126
|
my @listing = readdir $DIR; |
1133
|
7
|
|
|
|
|
67
|
closedir $DIR; |
1134
|
|
|
|
|
|
|
|
1135
|
|
|
|
|
|
|
NODE: |
1136
|
7
|
|
|
|
|
31
|
for my $node (@listing) { |
1137
|
23
|
100
|
|
|
|
60
|
next NODE if $node eq '.'; |
1138
|
16
|
100
|
|
|
|
33
|
next NODE if $node eq '..'; |
1139
|
9
|
100
|
|
|
|
33
|
next NODE if not $self->is_a_node(join_paths($target, $node)); |
1140
|
7
|
|
|
|
|
26
|
$self->do_unlink(join_paths($target, $node)); |
1141
|
|
|
|
|
|
|
} |
1142
|
7
|
|
|
|
|
47
|
$self->do_rmdir($target); |
1143
|
7
|
|
|
|
|
22
|
$self->do_link($source, $target); |
1144
|
7
|
|
|
|
|
24
|
return; |
1145
|
|
|
|
|
|
|
} |
1146
|
|
|
|
|
|
|
|
1147
|
|
|
|
|
|
|
|
1148
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1149
|
|
|
|
|
|
|
# Name : conflict() |
1150
|
|
|
|
|
|
|
# Purpose : handle conflicts in stow operations |
1151
|
|
|
|
|
|
|
# Parameters: $package => the package involved with the conflicting operation |
1152
|
|
|
|
|
|
|
# : $message => a description of the conflict |
1153
|
|
|
|
|
|
|
# Returns : n/a |
1154
|
|
|
|
|
|
|
# Throws : none |
1155
|
|
|
|
|
|
|
# Comments : none |
1156
|
|
|
|
|
|
|
#============================================================================ |
1157
|
|
|
|
|
|
|
sub conflict { |
1158
|
9
|
|
|
9
|
0
|
17
|
my $self = shift; |
1159
|
9
|
|
|
|
|
22
|
my ($action, $package, $message) = @_; |
1160
|
|
|
|
|
|
|
|
1161
|
9
|
|
|
|
|
47
|
debug(2, "CONFLICT when ${action}ing $package: $message"); |
1162
|
9
|
|
100
|
|
|
72
|
$self->{conflicts}{$action}{$package} ||= []; |
1163
|
9
|
|
|
|
|
16
|
push @{ $self->{conflicts}{$action}{$package} }, $message; |
|
9
|
|
|
|
|
32
|
|
1164
|
9
|
|
|
|
|
16
|
$self->{conflict_count}++; |
1165
|
|
|
|
|
|
|
|
1166
|
9
|
|
|
|
|
18
|
return; |
1167
|
|
|
|
|
|
|
} |
1168
|
|
|
|
|
|
|
|
1169
|
|
|
|
|
|
|
=head2 get_conflicts() |
1170
|
|
|
|
|
|
|
|
1171
|
|
|
|
|
|
|
Returns a nested hash of all potential conflicts discovered: the keys |
1172
|
|
|
|
|
|
|
are actions ('stow' or 'unstow'), and the values are hashrefs whose |
1173
|
|
|
|
|
|
|
keys are stow package names and whose values are conflict |
1174
|
|
|
|
|
|
|
descriptions, e.g.: |
1175
|
|
|
|
|
|
|
|
1176
|
|
|
|
|
|
|
( |
1177
|
|
|
|
|
|
|
stow => { |
1178
|
|
|
|
|
|
|
perl => [ |
1179
|
|
|
|
|
|
|
"existing target is not owned by stow: bin/a2p" |
1180
|
|
|
|
|
|
|
"existing target is neither a link nor a directory: bin/perl" |
1181
|
|
|
|
|
|
|
] |
1182
|
|
|
|
|
|
|
} |
1183
|
|
|
|
|
|
|
) |
1184
|
|
|
|
|
|
|
|
1185
|
|
|
|
|
|
|
=cut |
1186
|
|
|
|
|
|
|
|
1187
|
|
|
|
|
|
|
sub get_conflicts { |
1188
|
22
|
|
|
22
|
1
|
146
|
my $self = shift; |
1189
|
22
|
|
|
|
|
37
|
return %{ $self->{conflicts} }; |
|
22
|
|
|
|
|
125
|
|
1190
|
|
|
|
|
|
|
} |
1191
|
|
|
|
|
|
|
|
1192
|
|
|
|
|
|
|
=head2 get_conflict_count() |
1193
|
|
|
|
|
|
|
|
1194
|
|
|
|
|
|
|
Returns the number of conflicts found. |
1195
|
|
|
|
|
|
|
|
1196
|
|
|
|
|
|
|
=cut |
1197
|
|
|
|
|
|
|
|
1198
|
|
|
|
|
|
|
sub get_conflict_count { |
1199
|
51
|
|
|
51
|
1
|
298
|
my $self = shift; |
1200
|
51
|
|
|
|
|
178
|
return $self->{conflict_count}; |
1201
|
|
|
|
|
|
|
} |
1202
|
|
|
|
|
|
|
|
1203
|
|
|
|
|
|
|
=head2 get_tasks() |
1204
|
|
|
|
|
|
|
|
1205
|
|
|
|
|
|
|
Returns a list of all symlink/directory creation/removal tasks. |
1206
|
|
|
|
|
|
|
|
1207
|
|
|
|
|
|
|
=cut |
1208
|
|
|
|
|
|
|
|
1209
|
|
|
|
|
|
|
sub get_tasks { |
1210
|
26
|
|
|
26
|
1
|
236
|
my $self = shift; |
1211
|
26
|
|
|
|
|
37
|
return @{ $self->{tasks} }; |
|
26
|
|
|
|
|
162
|
|
1212
|
|
|
|
|
|
|
} |
1213
|
|
|
|
|
|
|
|
1214
|
|
|
|
|
|
|
=head2 get_action_count() |
1215
|
|
|
|
|
|
|
|
1216
|
|
|
|
|
|
|
Returns the number of actions planned for this Stow instance. |
1217
|
|
|
|
|
|
|
|
1218
|
|
|
|
|
|
|
=cut |
1219
|
|
|
|
|
|
|
|
1220
|
|
|
|
|
|
|
sub get_action_count { |
1221
|
0
|
|
|
0
|
1
|
0
|
my $self = shift; |
1222
|
0
|
|
|
|
|
0
|
return $self->{action_count}; |
1223
|
|
|
|
|
|
|
} |
1224
|
|
|
|
|
|
|
|
1225
|
|
|
|
|
|
|
#===== METHOD ================================================================ |
1226
|
|
|
|
|
|
|
# Name : ignore |
1227
|
|
|
|
|
|
|
# Purpose : determine if the given path matches a regex in our ignore list |
1228
|
|
|
|
|
|
|
# Parameters: $stow_path => the stow directory containing the package |
1229
|
|
|
|
|
|
|
# : $package => the package containing the path |
1230
|
|
|
|
|
|
|
# : $target => the path to check against the ignore list |
1231
|
|
|
|
|
|
|
# : relative to its package directory |
1232
|
|
|
|
|
|
|
# Returns : true iff the path should be ignored |
1233
|
|
|
|
|
|
|
# Throws : no exceptions |
1234
|
|
|
|
|
|
|
# Comments : none |
1235
|
|
|
|
|
|
|
#============================================================================= |
1236
|
|
|
|
|
|
|
sub ignore { |
1237
|
597
|
|
|
597
|
1
|
168023
|
my $self = shift; |
1238
|
597
|
|
|
|
|
1266
|
my ($stow_path, $package, $target) = @_; |
1239
|
|
|
|
|
|
|
|
1240
|
597
|
50
|
|
|
|
1287
|
internal_error(__PACKAGE__ . "::ignore() called with empty target") |
1241
|
|
|
|
|
|
|
unless length $target; |
1242
|
|
|
|
|
|
|
|
1243
|
597
|
|
|
|
|
777
|
for my $suffix (@{ $self->{ignore} }) { |
|
597
|
|
|
|
|
1270
|
|
1244
|
50
|
100
|
|
|
|
492
|
if ($target =~ m/$suffix/) { |
1245
|
4
|
|
|
|
|
27
|
debug(4, " Ignoring path $target due to --ignore=$suffix"); |
1246
|
4
|
|
|
|
|
15
|
return 1; |
1247
|
|
|
|
|
|
|
} |
1248
|
|
|
|
|
|
|
} |
1249
|
|
|
|
|
|
|
|
1250
|
593
|
|
|
|
|
1444
|
my $package_dir = join_paths($stow_path, $package); |
1251
|
593
|
|
|
|
|
1393
|
my ($path_regexp, $segment_regexp) = |
1252
|
|
|
|
|
|
|
$self->get_ignore_regexps($package_dir); |
1253
|
591
|
50
|
|
|
|
2736
|
debug(5, " Ignore list regexp for paths: " . |
1254
|
|
|
|
|
|
|
(defined $path_regexp ? "/$path_regexp/" : "none")); |
1255
|
591
|
100
|
|
|
|
1991
|
debug(5, " Ignore list regexp for segments: " . |
1256
|
|
|
|
|
|
|
(defined $segment_regexp ? "/$segment_regexp/" : "none")); |
1257
|
|
|
|
|
|
|
|
1258
|
591
|
100
|
66
|
|
|
4769
|
if (defined $path_regexp and "/$target" =~ $path_regexp) { |
1259
|
25
|
|
|
|
|
149
|
debug(4, " Ignoring path /$target"); |
1260
|
25
|
|
|
|
|
79
|
return 1; |
1261
|
|
|
|
|
|
|
} |
1262
|
|
|
|
|
|
|
|
1263
|
566
|
|
|
|
|
2173
|
(my $basename = $target) =~ s!.+/!!; |
1264
|
566
|
100
|
100
|
|
|
3089
|
if (defined $segment_regexp and $basename =~ $segment_regexp) { |
1265
|
28
|
|
|
|
|
123
|
debug(4, " Ignoring path segment $basename"); |
1266
|
28
|
|
|
|
|
109
|
return 1; |
1267
|
|
|
|
|
|
|
} |
1268
|
|
|
|
|
|
|
|
1269
|
538
|
|
|
|
|
1681
|
debug(5, " Not ignoring $target"); |
1270
|
538
|
|
|
|
|
1376
|
return 0; |
1271
|
|
|
|
|
|
|
} |
1272
|
|
|
|
|
|
|
|
1273
|
|
|
|
|
|
|
sub get_ignore_regexps { |
1274
|
593
|
|
|
593
|
0
|
802
|
my $self = shift; |
1275
|
593
|
|
|
|
|
932
|
my ($dir) = @_; |
1276
|
|
|
|
|
|
|
|
1277
|
|
|
|
|
|
|
# N.B. the local and global stow ignore files have to have different |
1278
|
|
|
|
|
|
|
# names so that: |
1279
|
|
|
|
|
|
|
# 1. the global one can be a symlink to within a stow |
1280
|
|
|
|
|
|
|
# package, managed by stow itself, and |
1281
|
|
|
|
|
|
|
# 2. the local ones can be ignored via hardcoded logic in |
1282
|
|
|
|
|
|
|
# GlobsToRegexp(), so that they always stay within their stow packages. |
1283
|
|
|
|
|
|
|
|
1284
|
593
|
|
|
|
|
1125
|
my $local_stow_ignore = join_paths($dir, $LOCAL_IGNORE_FILE); |
1285
|
593
|
|
|
|
|
1472
|
my $global_stow_ignore = join_paths($ENV{HOME}, $GLOBAL_IGNORE_FILE); |
1286
|
|
|
|
|
|
|
|
1287
|
593
|
|
|
|
|
1131
|
for my $file ($local_stow_ignore, $global_stow_ignore) { |
1288
|
962
|
100
|
|
|
|
11787
|
if (-e $file) { |
1289
|
266
|
|
|
|
|
1385
|
debug(5, " Using ignore file: $file"); |
1290
|
266
|
|
|
|
|
747
|
return $self->get_ignore_regexps_from_file($file); |
1291
|
|
|
|
|
|
|
} |
1292
|
|
|
|
|
|
|
else { |
1293
|
696
|
|
|
|
|
3039
|
debug(5, " $file didn't exist"); |
1294
|
|
|
|
|
|
|
} |
1295
|
|
|
|
|
|
|
} |
1296
|
|
|
|
|
|
|
|
1297
|
327
|
|
|
|
|
730
|
debug(4, " Using built-in ignore list"); |
1298
|
327
|
|
|
|
|
827
|
return @default_global_ignore_regexps; |
1299
|
|
|
|
|
|
|
} |
1300
|
|
|
|
|
|
|
|
1301
|
|
|
|
|
|
|
my %ignore_file_regexps; |
1302
|
|
|
|
|
|
|
|
1303
|
|
|
|
|
|
|
sub get_ignore_regexps_from_file { |
1304
|
266
|
|
|
266
|
0
|
402
|
my $self = shift; |
1305
|
266
|
|
|
|
|
437
|
my ($file) = @_; |
1306
|
|
|
|
|
|
|
|
1307
|
266
|
100
|
|
|
|
681
|
if (exists $ignore_file_regexps{$file}) { |
1308
|
244
|
|
|
|
|
718
|
debug(4, " Using memoized regexps from $file"); |
1309
|
244
|
|
|
|
|
337
|
return @{ $ignore_file_regexps{$file} }; |
|
244
|
|
|
|
|
933
|
|
1310
|
|
|
|
|
|
|
} |
1311
|
|
|
|
|
|
|
|
1312
|
22
|
50
|
|
|
|
638
|
if (! open(REGEXPS, $file)) { |
1313
|
0
|
|
|
|
|
0
|
debug(4, " Failed to open $file: $!"); |
1314
|
0
|
|
|
|
|
0
|
return undef; |
1315
|
|
|
|
|
|
|
} |
1316
|
|
|
|
|
|
|
|
1317
|
22
|
|
|
|
|
119
|
my @regexps = $self->get_ignore_regexps_from_fh(\*REGEXPS); |
1318
|
20
|
|
|
|
|
217
|
close(REGEXPS); |
1319
|
|
|
|
|
|
|
|
1320
|
20
|
|
|
|
|
100
|
$ignore_file_regexps{$file} = [ @regexps ]; |
1321
|
20
|
|
|
|
|
93
|
return @regexps; |
1322
|
|
|
|
|
|
|
} |
1323
|
|
|
|
|
|
|
|
1324
|
|
|
|
|
|
|
=head2 invalidate_memoized_regexp($file) |
1325
|
|
|
|
|
|
|
|
1326
|
|
|
|
|
|
|
For efficiency of performance, regular expressions are compiled from |
1327
|
|
|
|
|
|
|
each ignore list file the first time it is used by the Stow process, |
1328
|
|
|
|
|
|
|
and then memoized for future use. If you expect the contents of these |
1329
|
|
|
|
|
|
|
files to change during a single run, you will need to invalidate the |
1330
|
|
|
|
|
|
|
memoized value from this cache. This method allows you to do that. |
1331
|
|
|
|
|
|
|
|
1332
|
|
|
|
|
|
|
=cut |
1333
|
|
|
|
|
|
|
|
1334
|
|
|
|
|
|
|
sub invalidate_memoized_regexp { |
1335
|
21
|
|
|
21
|
1
|
3648
|
my $self = shift; |
1336
|
21
|
|
|
|
|
61
|
my ($file) = @_; |
1337
|
21
|
100
|
|
|
|
68
|
if (exists $ignore_file_regexps{$file}) { |
1338
|
18
|
|
|
|
|
84
|
debug(4, " Invalidated memoized regexp for $file"); |
1339
|
18
|
|
|
|
|
83
|
delete $ignore_file_regexps{$file}; |
1340
|
|
|
|
|
|
|
} |
1341
|
|
|
|
|
|
|
else { |
1342
|
3
|
|
|
|
|
18
|
debug(2, " WARNING: no memoized regexp for $file to invalidate"); |
1343
|
|
|
|
|
|
|
} |
1344
|
|
|
|
|
|
|
} |
1345
|
|
|
|
|
|
|
|
1346
|
|
|
|
|
|
|
sub get_ignore_regexps_from_fh { |
1347
|
36
|
|
|
36
|
0
|
77
|
my $self = shift; |
1348
|
36
|
|
|
|
|
84
|
my ($fh) = @_; |
1349
|
36
|
|
|
|
|
62
|
my %regexps; |
1350
|
36
|
|
|
|
|
443
|
while (<$fh>) { |
1351
|
338
|
|
|
|
|
500
|
chomp; |
1352
|
338
|
|
|
|
|
566
|
s/^\s+//; |
1353
|
338
|
|
|
|
|
655
|
s/\s+$//; |
1354
|
338
|
100
|
100
|
|
|
1219
|
next if /^#/ or length($_) == 0; |
1355
|
240
|
|
|
|
|
445
|
s/\s+#.+//; # strip comments to right of pattern |
1356
|
240
|
|
|
|
|
372
|
s/\\#/#/g; |
1357
|
240
|
|
|
|
|
1016
|
$regexps{$_}++; |
1358
|
|
|
|
|
|
|
} |
1359
|
|
|
|
|
|
|
|
1360
|
|
|
|
|
|
|
# Local ignore lists should *always* stay within the stow directory, |
1361
|
|
|
|
|
|
|
# because this is the only place stow looks for them. |
1362
|
36
|
|
|
|
|
213
|
$regexps{"^/\Q$LOCAL_IGNORE_FILE\E\$"}++; |
1363
|
|
|
|
|
|
|
|
1364
|
36
|
|
|
|
|
235
|
return $self->compile_ignore_regexps(%regexps); |
1365
|
|
|
|
|
|
|
} |
1366
|
|
|
|
|
|
|
|
1367
|
|
|
|
|
|
|
sub compile_ignore_regexps { |
1368
|
36
|
|
|
36
|
0
|
81
|
my $self = shift; |
1369
|
36
|
|
|
|
|
160
|
my (%regexps) = @_; |
1370
|
|
|
|
|
|
|
|
1371
|
36
|
|
|
|
|
69
|
my @segment_regexps; |
1372
|
|
|
|
|
|
|
my @path_regexps; |
1373
|
36
|
|
|
|
|
133
|
for my $regexp (keys %regexps) { |
1374
|
276
|
100
|
|
|
|
499
|
if (index($regexp, '/') < 0) { |
1375
|
|
|
|
|
|
|
# No / found in regexp, so use it for matching against basename |
1376
|
187
|
|
|
|
|
400
|
push @segment_regexps, $regexp; |
1377
|
|
|
|
|
|
|
} |
1378
|
|
|
|
|
|
|
else { |
1379
|
|
|
|
|
|
|
# / found in regexp, so use it for matching against full path |
1380
|
89
|
|
|
|
|
347
|
push @path_regexps, $regexp; |
1381
|
|
|
|
|
|
|
} |
1382
|
|
|
|
|
|
|
} |
1383
|
|
|
|
|
|
|
|
1384
|
36
|
|
|
|
|
140
|
my $segment_regexp = join '|', @segment_regexps; |
1385
|
36
|
|
|
|
|
92
|
my $path_regexp = join '|', @path_regexps; |
1386
|
36
|
100
|
|
|
|
182
|
$segment_regexp = @segment_regexps ? |
1387
|
|
|
|
|
|
|
$self->compile_regexp("^($segment_regexp)\$") : undef; |
1388
|
35
|
50
|
|
|
|
174
|
$path_regexp = @path_regexps ? |
1389
|
|
|
|
|
|
|
$self->compile_regexp("(^|/)($path_regexp)(/|\$)") : undef; |
1390
|
|
|
|
|
|
|
|
1391
|
34
|
|
|
|
|
233
|
return ($path_regexp, $segment_regexp); |
1392
|
|
|
|
|
|
|
} |
1393
|
|
|
|
|
|
|
|
1394
|
|
|
|
|
|
|
sub compile_regexp { |
1395
|
62
|
|
|
62
|
0
|
121
|
my $self = shift; |
1396
|
62
|
|
|
|
|
115
|
my ($regexp) = @_; |
1397
|
62
|
|
|
|
|
93
|
my $compiled = eval { qr/$regexp/ }; |
|
62
|
|
|
|
|
2271
|
|
1398
|
62
|
100
|
|
|
|
213
|
die "Failed to compile regexp: $@\n" if $@; |
1399
|
60
|
|
|
|
|
149
|
return $compiled; |
1400
|
|
|
|
|
|
|
} |
1401
|
|
|
|
|
|
|
|
1402
|
|
|
|
|
|
|
sub get_default_global_ignore_regexps { |
1403
|
14
|
|
|
14
|
0
|
38
|
my $class = shift; |
1404
|
|
|
|
|
|
|
# Bootstrap issue - first time we stow, we will be stowing |
1405
|
|
|
|
|
|
|
# .cvsignore so it might not exist in ~ yet, or if it does, it could |
1406
|
|
|
|
|
|
|
# be an old version missing the entries we need. So we make sure |
1407
|
|
|
|
|
|
|
# they are there by hardcoding some crucial entries. |
1408
|
14
|
|
|
|
|
59
|
return $class->get_ignore_regexps_from_fh(\*DATA); |
1409
|
|
|
|
|
|
|
} |
1410
|
|
|
|
|
|
|
|
1411
|
|
|
|
|
|
|
#===== METHOD ================================================================ |
1412
|
|
|
|
|
|
|
# Name : defer |
1413
|
|
|
|
|
|
|
# Purpose : determine if the given path matches a regex in our defer list |
1414
|
|
|
|
|
|
|
# Parameters: $path |
1415
|
|
|
|
|
|
|
# Returns : Boolean |
1416
|
|
|
|
|
|
|
# Throws : no exceptions |
1417
|
|
|
|
|
|
|
# Comments : none |
1418
|
|
|
|
|
|
|
#============================================================================= |
1419
|
|
|
|
|
|
|
sub defer { |
1420
|
16
|
|
|
16
|
1
|
41
|
my $self = shift; |
1421
|
16
|
|
|
|
|
28
|
my ($path) = @_; |
1422
|
|
|
|
|
|
|
|
1423
|
16
|
|
|
|
|
26
|
for my $prefix (@{ $self->{defer} }) { |
|
16
|
|
|
|
|
44
|
|
1424
|
8
|
100
|
|
|
|
109
|
return 1 if $path =~ m/$prefix/; |
1425
|
|
|
|
|
|
|
} |
1426
|
13
|
|
|
|
|
45
|
return 0; |
1427
|
|
|
|
|
|
|
} |
1428
|
|
|
|
|
|
|
|
1429
|
|
|
|
|
|
|
#===== METHOD ================================================================ |
1430
|
|
|
|
|
|
|
# Name : override |
1431
|
|
|
|
|
|
|
# Purpose : determine if the given path matches a regex in our override list |
1432
|
|
|
|
|
|
|
# Parameters: $path |
1433
|
|
|
|
|
|
|
# Returns : Boolean |
1434
|
|
|
|
|
|
|
# Throws : no exceptions |
1435
|
|
|
|
|
|
|
# Comments : none |
1436
|
|
|
|
|
|
|
#============================================================================= |
1437
|
|
|
|
|
|
|
sub override { |
1438
|
39
|
|
|
39
|
1
|
68
|
my $self = shift; |
1439
|
39
|
|
|
|
|
83
|
my ($path) = @_; |
1440
|
|
|
|
|
|
|
|
1441
|
39
|
|
|
|
|
51
|
for my $regex (@{ $self->{override} }) { |
|
39
|
|
|
|
|
106
|
|
1442
|
6
|
100
|
|
|
|
87
|
return 1 if $path =~ m/$regex/; |
1443
|
|
|
|
|
|
|
} |
1444
|
37
|
|
|
|
|
114
|
return 0; |
1445
|
|
|
|
|
|
|
} |
1446
|
|
|
|
|
|
|
|
1447
|
|
|
|
|
|
|
############################################################################## |
1448
|
|
|
|
|
|
|
# |
1449
|
|
|
|
|
|
|
# The following code provides the abstractions that allow us to defer operating |
1450
|
|
|
|
|
|
|
# on the filesystem until after all potential conflcits have been assessed. |
1451
|
|
|
|
|
|
|
# |
1452
|
|
|
|
|
|
|
############################################################################## |
1453
|
|
|
|
|
|
|
|
1454
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1455
|
|
|
|
|
|
|
# Name : process_tasks() |
1456
|
|
|
|
|
|
|
# Purpose : process each task in the tasks list |
1457
|
|
|
|
|
|
|
# Parameters: none |
1458
|
|
|
|
|
|
|
# Returns : n/a |
1459
|
|
|
|
|
|
|
# Throws : fatal error if tasks list is corrupted or a task fails |
1460
|
|
|
|
|
|
|
# Comments : none |
1461
|
|
|
|
|
|
|
#============================================================================ |
1462
|
|
|
|
|
|
|
sub process_tasks { |
1463
|
45
|
|
|
45
|
0
|
1678
|
my $self = shift; |
1464
|
|
|
|
|
|
|
|
1465
|
45
|
|
|
|
|
139
|
debug(2, "Processing tasks..."); |
1466
|
|
|
|
|
|
|
|
1467
|
|
|
|
|
|
|
# Strip out all tasks with a skip action |
1468
|
45
|
|
|
|
|
76
|
$self->{tasks} = [ grep { $_->{action} ne 'skip' } @{ $self->{tasks} } ]; |
|
137
|
|
|
|
|
318
|
|
|
45
|
|
|
|
|
115
|
|
1469
|
|
|
|
|
|
|
|
1470
|
45
|
50
|
|
|
|
110
|
if (not @{ $self->{tasks} }) { |
|
45
|
|
|
|
|
122
|
|
1471
|
0
|
|
|
|
|
0
|
return; |
1472
|
|
|
|
|
|
|
} |
1473
|
|
|
|
|
|
|
|
1474
|
|
|
|
|
|
|
$self->within_target_do(sub { |
1475
|
45
|
|
|
45
|
|
77
|
for my $task (@{ $self->{tasks} }) { |
|
45
|
|
|
|
|
108
|
|
1476
|
130
|
|
|
|
|
293
|
$self->process_task($task); |
1477
|
|
|
|
|
|
|
} |
1478
|
45
|
|
|
|
|
260
|
}); |
1479
|
|
|
|
|
|
|
|
1480
|
45
|
|
|
|
|
255
|
debug(2, "Processing tasks... done"); |
1481
|
|
|
|
|
|
|
} |
1482
|
|
|
|
|
|
|
|
1483
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1484
|
|
|
|
|
|
|
# Name : process_task() |
1485
|
|
|
|
|
|
|
# Purpose : process a single task |
1486
|
|
|
|
|
|
|
# Parameters: $task => the task to process |
1487
|
|
|
|
|
|
|
# Returns : n/a |
1488
|
|
|
|
|
|
|
# Throws : fatal error if task fails |
1489
|
|
|
|
|
|
|
# Comments : Must run from within target directory. |
1490
|
|
|
|
|
|
|
# : Task involve either creating or deleting dirs and symlinks |
1491
|
|
|
|
|
|
|
# : an action is set to 'skip' if it is found to be redundant |
1492
|
|
|
|
|
|
|
#============================================================================ |
1493
|
|
|
|
|
|
|
sub process_task { |
1494
|
130
|
|
|
130
|
0
|
209
|
my $self = shift; |
1495
|
130
|
|
|
|
|
209
|
my ($task) = @_; |
1496
|
|
|
|
|
|
|
|
1497
|
130
|
100
|
|
|
|
367
|
if ($task->{action} eq 'create') { |
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
1498
|
85
|
100
|
|
|
|
241
|
if ($task->{type} eq 'dir') { |
|
|
50
|
|
|
|
|
|
1499
|
19
|
50
|
|
|
|
851
|
mkdir($task->{path}, 0777) |
1500
|
|
|
|
|
|
|
or error("Could not create directory: $task->{path} ($!)"); |
1501
|
19
|
|
|
|
|
88
|
return; |
1502
|
|
|
|
|
|
|
} |
1503
|
|
|
|
|
|
|
elsif ($task->{type} eq 'link') { |
1504
|
|
|
|
|
|
|
symlink $task->{source}, $task->{path} |
1505
|
|
|
|
|
|
|
or error( |
1506
|
|
|
|
|
|
|
"Could not create symlink: %s => %s ($!)", |
1507
|
|
|
|
|
|
|
$task->{path}, |
1508
|
|
|
|
|
|
|
$task->{source} |
1509
|
66
|
50
|
|
|
|
1998
|
); |
1510
|
66
|
|
|
|
|
272
|
return; |
1511
|
|
|
|
|
|
|
} |
1512
|
|
|
|
|
|
|
} |
1513
|
|
|
|
|
|
|
elsif ($task->{action} eq 'remove') { |
1514
|
43
|
100
|
|
|
|
136
|
if ($task->{type} eq 'dir') { |
|
|
50
|
|
|
|
|
|
1515
|
|
|
|
|
|
|
rmdir $task->{path} |
1516
|
5
|
50
|
|
|
|
259
|
or error("Could not remove directory: $task->{path} ($!)"); |
1517
|
5
|
|
|
|
|
23
|
return; |
1518
|
|
|
|
|
|
|
} |
1519
|
|
|
|
|
|
|
elsif ($task->{type} eq 'link') { |
1520
|
|
|
|
|
|
|
unlink $task->{path} |
1521
|
38
|
50
|
|
|
|
1422
|
or error("Could not remove link: $task->{path} ($!)"); |
1522
|
38
|
|
|
|
|
198
|
return; |
1523
|
|
|
|
|
|
|
} |
1524
|
|
|
|
|
|
|
} |
1525
|
|
|
|
|
|
|
elsif ($task->{action} eq 'move') { |
1526
|
2
|
50
|
|
|
|
7
|
if ($task->{type} eq 'file') { |
1527
|
|
|
|
|
|
|
# rename() not good enough, since the stow directory |
1528
|
|
|
|
|
|
|
# might be on a different filesystem to the target. |
1529
|
|
|
|
|
|
|
move $task->{path}, $task->{dest} |
1530
|
2
|
50
|
|
|
|
17
|
or error("Could not move $task->{path} -> $task->{dest} ($!)"); |
1531
|
2
|
|
|
|
|
345
|
return; |
1532
|
|
|
|
|
|
|
} |
1533
|
|
|
|
|
|
|
} |
1534
|
|
|
|
|
|
|
|
1535
|
|
|
|
|
|
|
# Should never happen. |
1536
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task->{action}"); |
1537
|
|
|
|
|
|
|
} |
1538
|
|
|
|
|
|
|
|
1539
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1540
|
|
|
|
|
|
|
# Name : link_task_action() |
1541
|
|
|
|
|
|
|
# Purpose : finds the link task action for the given path, if there is one |
1542
|
|
|
|
|
|
|
# Parameters: $path |
1543
|
|
|
|
|
|
|
# Returns : 'remove', 'create', or '' if there is no action |
1544
|
|
|
|
|
|
|
# Throws : a fatal exception if an invalid action is found |
1545
|
|
|
|
|
|
|
# Comments : none |
1546
|
|
|
|
|
|
|
#============================================================================ |
1547
|
|
|
|
|
|
|
sub link_task_action { |
1548
|
849
|
|
|
849
|
0
|
1161
|
my $self = shift; |
1549
|
849
|
|
|
|
|
1237
|
my ($path) = @_; |
1550
|
|
|
|
|
|
|
|
1551
|
849
|
100
|
|
|
|
1861
|
if (! exists $self->{link_task_for}{$path}) { |
1552
|
815
|
|
|
|
|
2353
|
debug(4, " link_task_action($path): no task"); |
1553
|
815
|
|
|
|
|
3230
|
return ''; |
1554
|
|
|
|
|
|
|
} |
1555
|
|
|
|
|
|
|
|
1556
|
34
|
|
|
|
|
81
|
my $action = $self->{link_task_for}{$path}->{action}; |
1557
|
34
|
50
|
66
|
|
|
123
|
internal_error("bad task action: $action") |
1558
|
|
|
|
|
|
|
unless $action eq 'remove' or $action eq 'create'; |
1559
|
|
|
|
|
|
|
|
1560
|
34
|
|
|
|
|
123
|
debug(4, " link_task_action($path): link task exists with action $action"); |
1561
|
34
|
|
|
|
|
78
|
return $action; |
1562
|
|
|
|
|
|
|
} |
1563
|
|
|
|
|
|
|
|
1564
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1565
|
|
|
|
|
|
|
# Name : dir_task_action() |
1566
|
|
|
|
|
|
|
# Purpose : finds the dir task action for the given path, if there is one |
1567
|
|
|
|
|
|
|
# Parameters: $path |
1568
|
|
|
|
|
|
|
# Returns : 'remove', 'create', or '' if there is no action |
1569
|
|
|
|
|
|
|
# Throws : a fatal exception if an invalid action is found |
1570
|
|
|
|
|
|
|
# Comments : none |
1571
|
|
|
|
|
|
|
#============================================================================ |
1572
|
|
|
|
|
|
|
sub dir_task_action { |
1573
|
400
|
|
|
400
|
0
|
536
|
my $self = shift; |
1574
|
400
|
|
|
|
|
561
|
my ($path) = @_; |
1575
|
|
|
|
|
|
|
|
1576
|
400
|
100
|
|
|
|
861
|
if (! exists $self->{dir_task_for}{$path}) { |
1577
|
370
|
|
|
|
|
1029
|
debug(4, " dir_task_action($path): no task"); |
1578
|
370
|
|
|
|
|
696
|
return ''; |
1579
|
|
|
|
|
|
|
} |
1580
|
|
|
|
|
|
|
|
1581
|
30
|
|
|
|
|
56
|
my $action = $self->{dir_task_for}{$path}->{action}; |
1582
|
30
|
50
|
66
|
|
|
115
|
internal_error("bad task action: $action") |
1583
|
|
|
|
|
|
|
unless $action eq 'remove' or $action eq 'create'; |
1584
|
|
|
|
|
|
|
|
1585
|
30
|
|
|
|
|
91
|
debug(4, " dir_task_action($path): dir task exists with action $action"); |
1586
|
30
|
|
|
|
|
61
|
return $action; |
1587
|
|
|
|
|
|
|
} |
1588
|
|
|
|
|
|
|
|
1589
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1590
|
|
|
|
|
|
|
# Name : parent_link_scheduled_for_removal() |
1591
|
|
|
|
|
|
|
# Purpose : determine whether the given path or any parent thereof |
1592
|
|
|
|
|
|
|
# : is a link scheduled for removal |
1593
|
|
|
|
|
|
|
# Parameters: $path |
1594
|
|
|
|
|
|
|
# Returns : Boolean |
1595
|
|
|
|
|
|
|
# Throws : none |
1596
|
|
|
|
|
|
|
# Comments : none |
1597
|
|
|
|
|
|
|
#============================================================================ |
1598
|
|
|
|
|
|
|
sub parent_link_scheduled_for_removal { |
1599
|
478
|
|
|
478
|
0
|
653
|
my $self = shift; |
1600
|
478
|
|
|
|
|
730
|
my ($path) = @_; |
1601
|
|
|
|
|
|
|
|
1602
|
478
|
|
|
|
|
605
|
my $prefix = ''; |
1603
|
478
|
|
|
|
|
1685
|
for my $part (split m{/+}, $path) { |
1604
|
839
|
|
|
|
|
1638
|
$prefix = join_paths($prefix, $part); |
1605
|
839
|
|
|
|
|
2489
|
debug(4, " parent_link_scheduled_for_removal($path): prefix $prefix"); |
1606
|
839
|
100
|
66
|
|
|
2066
|
if (exists $self->{link_task_for}{$prefix} and |
1607
|
|
|
|
|
|
|
$self->{link_task_for}{$prefix}->{action} eq 'remove') { |
1608
|
9
|
|
|
|
|
29
|
debug(4, " parent_link_scheduled_for_removal($path): link scheduled for removal"); |
1609
|
9
|
|
|
|
|
44
|
return 1; |
1610
|
|
|
|
|
|
|
} |
1611
|
|
|
|
|
|
|
} |
1612
|
|
|
|
|
|
|
|
1613
|
469
|
|
|
|
|
1336
|
debug(4, " parent_link_scheduled_for_removal($path): returning false"); |
1614
|
469
|
|
|
|
|
1098
|
return 0; |
1615
|
|
|
|
|
|
|
} |
1616
|
|
|
|
|
|
|
|
1617
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1618
|
|
|
|
|
|
|
# Name : is_a_link() |
1619
|
|
|
|
|
|
|
# Purpose : determine if the given path is a current or planned link |
1620
|
|
|
|
|
|
|
# Parameters: $path |
1621
|
|
|
|
|
|
|
# Returns : Boolean |
1622
|
|
|
|
|
|
|
# Throws : none |
1623
|
|
|
|
|
|
|
# Comments : returns false if an existing link is scheduled for removal |
1624
|
|
|
|
|
|
|
# : and true if a non-existent link is scheduled for creation |
1625
|
|
|
|
|
|
|
#============================================================================ |
1626
|
|
|
|
|
|
|
sub is_a_link { |
1627
|
373
|
|
|
373
|
0
|
556
|
my $self = shift; |
1628
|
373
|
|
|
|
|
628
|
my ($path) = @_; |
1629
|
373
|
|
|
|
|
1146
|
debug(4, " is_a_link($path)"); |
1630
|
|
|
|
|
|
|
|
1631
|
373
|
100
|
|
|
|
837
|
if (my $action = $self->link_task_action($path)) { |
1632
|
7
|
50
|
|
|
|
26
|
if ($action eq 'remove') { |
|
|
50
|
|
|
|
|
|
1633
|
0
|
|
|
|
|
0
|
debug(4, " is_a_link($path): returning 0 (remove action found)"); |
1634
|
0
|
|
|
|
|
0
|
return 0; |
1635
|
|
|
|
|
|
|
} |
1636
|
|
|
|
|
|
|
elsif ($action eq 'create') { |
1637
|
7
|
|
|
|
|
24
|
debug(4, " is_a_link($path): returning 1 (create action found)"); |
1638
|
7
|
|
|
|
|
21
|
return 1; |
1639
|
|
|
|
|
|
|
} |
1640
|
|
|
|
|
|
|
} |
1641
|
|
|
|
|
|
|
|
1642
|
366
|
100
|
|
|
|
4618
|
if (-l $path) { |
1643
|
|
|
|
|
|
|
# Check if any of its parent are links scheduled for removal |
1644
|
|
|
|
|
|
|
# (need this for edge case during unfolding) |
1645
|
119
|
|
|
|
|
606
|
debug(4, " is_a_link($path): is a real link"); |
1646
|
119
|
100
|
|
|
|
318
|
return $self->parent_link_scheduled_for_removal($path) ? 0 : 1; |
1647
|
|
|
|
|
|
|
} |
1648
|
|
|
|
|
|
|
|
1649
|
247
|
|
|
|
|
1195
|
debug(4, " is_a_link($path): returning 0"); |
1650
|
247
|
|
|
|
|
1768
|
return 0; |
1651
|
|
|
|
|
|
|
} |
1652
|
|
|
|
|
|
|
|
1653
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1654
|
|
|
|
|
|
|
# Name : is_a_dir() |
1655
|
|
|
|
|
|
|
# Purpose : determine if the given path is a current or planned directory |
1656
|
|
|
|
|
|
|
# Parameters: $path |
1657
|
|
|
|
|
|
|
# Returns : Boolean |
1658
|
|
|
|
|
|
|
# Throws : none |
1659
|
|
|
|
|
|
|
# Comments : returns false if an existing directory is scheduled for removal |
1660
|
|
|
|
|
|
|
# : and true if a non-existent directory is scheduled for creation |
1661
|
|
|
|
|
|
|
# : we also need to be sure we are not just following a link |
1662
|
|
|
|
|
|
|
#============================================================================ |
1663
|
|
|
|
|
|
|
sub is_a_dir { |
1664
|
50
|
|
|
50
|
0
|
85
|
my $self = shift; |
1665
|
50
|
|
|
|
|
83
|
my ($path) = @_; |
1666
|
50
|
|
|
|
|
147
|
debug(4, " is_a_dir($path)"); |
1667
|
|
|
|
|
|
|
|
1668
|
50
|
50
|
|
|
|
109
|
if (my $action = $self->dir_task_action($path)) { |
1669
|
0
|
0
|
|
|
|
0
|
if ($action eq 'remove') { |
|
|
0
|
|
|
|
|
|
1670
|
0
|
|
|
|
|
0
|
return 0; |
1671
|
|
|
|
|
|
|
} |
1672
|
|
|
|
|
|
|
elsif ($action eq 'create') { |
1673
|
0
|
|
|
|
|
0
|
return 1; |
1674
|
|
|
|
|
|
|
} |
1675
|
|
|
|
|
|
|
} |
1676
|
|
|
|
|
|
|
|
1677
|
50
|
50
|
|
|
|
107
|
return 0 if $self->parent_link_scheduled_for_removal($path); |
1678
|
|
|
|
|
|
|
|
1679
|
50
|
100
|
|
|
|
643
|
if (-d $path) { |
1680
|
43
|
|
|
|
|
217
|
debug(4, " is_a_dir($path): real dir"); |
1681
|
43
|
|
|
|
|
148
|
return 1; |
1682
|
|
|
|
|
|
|
} |
1683
|
|
|
|
|
|
|
|
1684
|
7
|
|
|
|
|
41
|
debug(4, " is_a_dir($path): returning false"); |
1685
|
7
|
|
|
|
|
19
|
return 0; |
1686
|
|
|
|
|
|
|
} |
1687
|
|
|
|
|
|
|
|
1688
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1689
|
|
|
|
|
|
|
# Name : is_a_node() |
1690
|
|
|
|
|
|
|
# Purpose : determine whether the given path is a current or planned node |
1691
|
|
|
|
|
|
|
# Parameters: $path |
1692
|
|
|
|
|
|
|
# Returns : Boolean |
1693
|
|
|
|
|
|
|
# Throws : none |
1694
|
|
|
|
|
|
|
# Comments : returns false if an existing node is scheduled for removal |
1695
|
|
|
|
|
|
|
# : true if a non-existent node is scheduled for creation |
1696
|
|
|
|
|
|
|
# : we also need to be sure we are not just following a link |
1697
|
|
|
|
|
|
|
#============================================================================ |
1698
|
|
|
|
|
|
|
sub is_a_node { |
1699
|
350
|
|
|
350
|
0
|
524
|
my $self = shift; |
1700
|
350
|
|
|
|
|
619
|
my ($path) = @_; |
1701
|
350
|
|
|
|
|
1120
|
debug(4, " is_a_node($path)"); |
1702
|
|
|
|
|
|
|
|
1703
|
350
|
|
|
|
|
823
|
my $laction = $self->link_task_action($path); |
1704
|
350
|
|
|
|
|
745
|
my $daction = $self->dir_task_action($path); |
1705
|
|
|
|
|
|
|
|
1706
|
350
|
100
|
|
|
|
868
|
if ($laction eq 'remove') { |
|
|
100
|
|
|
|
|
|
1707
|
17
|
50
|
|
|
|
61
|
if ($daction eq 'remove') { |
|
|
100
|
|
|
|
|
|
1708
|
0
|
|
|
|
|
0
|
internal_error("removing link and dir: $path"); |
1709
|
0
|
|
|
|
|
0
|
return 0; |
1710
|
|
|
|
|
|
|
} |
1711
|
|
|
|
|
|
|
elsif ($daction eq 'create') { |
1712
|
|
|
|
|
|
|
# Assume that we're unfolding $path, and that the link |
1713
|
|
|
|
|
|
|
# removal action is earlier than the dir creation action |
1714
|
|
|
|
|
|
|
# in the task queue. FIXME: is this a safe assumption? |
1715
|
6
|
|
|
|
|
17
|
return 1; |
1716
|
|
|
|
|
|
|
} |
1717
|
|
|
|
|
|
|
else { # no dir action |
1718
|
11
|
|
|
|
|
41
|
return 0; |
1719
|
|
|
|
|
|
|
} |
1720
|
|
|
|
|
|
|
} |
1721
|
|
|
|
|
|
|
elsif ($laction eq 'create') { |
1722
|
2
|
50
|
|
|
|
6
|
if ($daction eq 'remove') { |
|
|
0
|
|
|
|
|
|
1723
|
|
|
|
|
|
|
# Assume that we're folding $path, and that the dir |
1724
|
|
|
|
|
|
|
# removal action is earlier than the link creation action |
1725
|
|
|
|
|
|
|
# in the task queue. FIXME: is this a safe assumption? |
1726
|
2
|
|
|
|
|
6
|
return 1; |
1727
|
|
|
|
|
|
|
} |
1728
|
|
|
|
|
|
|
elsif ($daction eq 'create') { |
1729
|
0
|
|
|
|
|
0
|
internal_error("creating link and dir: $path"); |
1730
|
0
|
|
|
|
|
0
|
return 1; |
1731
|
|
|
|
|
|
|
} |
1732
|
|
|
|
|
|
|
else { # no dir action |
1733
|
0
|
|
|
|
|
0
|
return 1; |
1734
|
|
|
|
|
|
|
} |
1735
|
|
|
|
|
|
|
} |
1736
|
|
|
|
|
|
|
else { |
1737
|
|
|
|
|
|
|
# No link action |
1738
|
331
|
50
|
|
|
|
757
|
if ($daction eq 'remove') { |
|
|
100
|
|
|
|
|
|
1739
|
0
|
|
|
|
|
0
|
return 0; |
1740
|
|
|
|
|
|
|
} |
1741
|
|
|
|
|
|
|
elsif ($daction eq 'create') { |
1742
|
22
|
|
|
|
|
50
|
return 1; |
1743
|
|
|
|
|
|
|
} |
1744
|
|
|
|
|
|
|
else { # no dir action |
1745
|
|
|
|
|
|
|
# fall through to below |
1746
|
|
|
|
|
|
|
} |
1747
|
|
|
|
|
|
|
} |
1748
|
|
|
|
|
|
|
|
1749
|
309
|
100
|
|
|
|
632
|
return 0 if $self->parent_link_scheduled_for_removal($path); |
1750
|
|
|
|
|
|
|
|
1751
|
301
|
100
|
|
|
|
3766
|
if (-e $path) { |
1752
|
234
|
|
|
|
|
1152
|
debug(4, " is_a_node($path): really exists"); |
1753
|
234
|
|
|
|
|
701
|
return 1; |
1754
|
|
|
|
|
|
|
} |
1755
|
|
|
|
|
|
|
|
1756
|
67
|
|
|
|
|
332
|
debug(4, " is_a_node($path): returning false"); |
1757
|
67
|
|
|
|
|
732
|
return 0; |
1758
|
|
|
|
|
|
|
} |
1759
|
|
|
|
|
|
|
|
1760
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1761
|
|
|
|
|
|
|
# Name : read_a_link() |
1762
|
|
|
|
|
|
|
# Purpose : return the source of a current or planned link |
1763
|
|
|
|
|
|
|
# Parameters: $path => path to the link target |
1764
|
|
|
|
|
|
|
# Returns : a string |
1765
|
|
|
|
|
|
|
# Throws : fatal exception if the given path is not a current or planned |
1766
|
|
|
|
|
|
|
# : link |
1767
|
|
|
|
|
|
|
# Comments : none |
1768
|
|
|
|
|
|
|
#============================================================================ |
1769
|
|
|
|
|
|
|
sub read_a_link { |
1770
|
125
|
|
|
125
|
0
|
175
|
my $self = shift; |
1771
|
125
|
|
|
|
|
197
|
my ($path) = @_; |
1772
|
|
|
|
|
|
|
|
1773
|
125
|
100
|
|
|
|
229
|
if (my $action = $self->link_task_action($path)) { |
|
|
50
|
|
|
|
|
|
1774
|
7
|
|
|
|
|
39
|
debug(4, " read_a_link($path): task exists with action $action"); |
1775
|
|
|
|
|
|
|
|
1776
|
7
|
50
|
|
|
|
15
|
if ($action eq 'create') { |
|
|
0
|
|
|
|
|
|
1777
|
7
|
|
|
|
|
31
|
return $self->{link_task_for}{$path}->{source}; |
1778
|
|
|
|
|
|
|
} |
1779
|
|
|
|
|
|
|
elsif ($action eq 'remove') { |
1780
|
0
|
|
|
|
|
0
|
internal_error( |
1781
|
|
|
|
|
|
|
"read_a_link() passed a path that is scheduled for removal: $path" |
1782
|
|
|
|
|
|
|
); |
1783
|
|
|
|
|
|
|
} |
1784
|
|
|
|
|
|
|
} |
1785
|
|
|
|
|
|
|
elsif (-l $path) { |
1786
|
118
|
|
|
|
|
652
|
debug(4, " read_a_link($path): real link"); |
1787
|
118
|
50
|
|
|
|
1032
|
my $target = readlink $path or error("Could not read link: $path ($!)"); |
1788
|
118
|
|
|
|
|
397
|
return $target; |
1789
|
|
|
|
|
|
|
} |
1790
|
0
|
|
|
|
|
0
|
internal_error("read_a_link() passed a non link path: $path\n"); |
1791
|
|
|
|
|
|
|
} |
1792
|
|
|
|
|
|
|
|
1793
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1794
|
|
|
|
|
|
|
# Name : do_link() |
1795
|
|
|
|
|
|
|
# Purpose : wrap 'link' operation for later processing |
1796
|
|
|
|
|
|
|
# Parameters: $oldfile => the existing file to link to |
1797
|
|
|
|
|
|
|
# : $newfile => the file to link |
1798
|
|
|
|
|
|
|
# Returns : n/a |
1799
|
|
|
|
|
|
|
# Throws : error if this clashes with an existing planned operation |
1800
|
|
|
|
|
|
|
# Comments : cleans up operations that undo previous operations |
1801
|
|
|
|
|
|
|
#============================================================================ |
1802
|
|
|
|
|
|
|
sub do_link { |
1803
|
75
|
|
|
75
|
0
|
119
|
my $self = shift; |
1804
|
75
|
|
|
|
|
151
|
my ($oldfile, $newfile) = @_; |
1805
|
|
|
|
|
|
|
|
1806
|
75
|
100
|
|
|
|
166
|
if (exists $self->{dir_task_for}{$newfile}) { |
1807
|
7
|
|
|
|
|
17
|
my $task_ref = $self->{dir_task_for}{$newfile}; |
1808
|
|
|
|
|
|
|
|
1809
|
7
|
50
|
|
|
|
43
|
if ($task_ref->{action} eq 'create') { |
|
|
50
|
|
|
|
|
|
1810
|
0
|
0
|
|
|
|
0
|
if ($task_ref->{type} eq 'dir') { |
1811
|
0
|
|
|
|
|
0
|
internal_error( |
1812
|
|
|
|
|
|
|
"new link (%s => %s) clashes with planned new directory", |
1813
|
|
|
|
|
|
|
$newfile, |
1814
|
|
|
|
|
|
|
$oldfile, |
1815
|
|
|
|
|
|
|
); |
1816
|
|
|
|
|
|
|
} |
1817
|
|
|
|
|
|
|
} |
1818
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'remove') { |
1819
|
|
|
|
|
|
|
# We may need to remove a directory before creating a link so continue. |
1820
|
|
|
|
|
|
|
} |
1821
|
|
|
|
|
|
|
else { |
1822
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
1823
|
|
|
|
|
|
|
} |
1824
|
|
|
|
|
|
|
} |
1825
|
|
|
|
|
|
|
|
1826
|
75
|
100
|
|
|
|
154
|
if (exists $self->{link_task_for}{$newfile}) { |
1827
|
2
|
|
|
|
|
5
|
my $task_ref = $self->{link_task_for}{$newfile}; |
1828
|
|
|
|
|
|
|
|
1829
|
2
|
50
|
|
|
|
9
|
if ($task_ref->{action} eq 'create') { |
|
|
50
|
|
|
|
|
|
1830
|
0
|
0
|
|
|
|
0
|
if ($task_ref->{source} ne $oldfile) { |
1831
|
|
|
|
|
|
|
internal_error( |
1832
|
|
|
|
|
|
|
"new link clashes with planned new link: %s => %s", |
1833
|
|
|
|
|
|
|
$task_ref->{path}, |
1834
|
|
|
|
|
|
|
$task_ref->{source}, |
1835
|
|
|
|
|
|
|
) |
1836
|
0
|
|
|
|
|
0
|
} |
1837
|
|
|
|
|
|
|
else { |
1838
|
0
|
|
|
|
|
0
|
debug(1, "LINK: $newfile => $oldfile (duplicates previous action)"); |
1839
|
0
|
|
|
|
|
0
|
return; |
1840
|
|
|
|
|
|
|
} |
1841
|
|
|
|
|
|
|
} |
1842
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'remove') { |
1843
|
2
|
50
|
|
|
|
7
|
if ($task_ref->{source} eq $oldfile) { |
1844
|
|
|
|
|
|
|
# No need to remove a link we are going to recreate |
1845
|
0
|
|
|
|
|
0
|
debug(1, "LINK: $newfile => $oldfile (reverts previous action)"); |
1846
|
0
|
|
|
|
|
0
|
$self->{link_task_for}{$newfile}->{action} = 'skip'; |
1847
|
0
|
|
|
|
|
0
|
delete $self->{link_task_for}{$newfile}; |
1848
|
0
|
|
|
|
|
0
|
return; |
1849
|
|
|
|
|
|
|
} |
1850
|
|
|
|
|
|
|
# We may need to remove a link to replace it so continue |
1851
|
|
|
|
|
|
|
} |
1852
|
|
|
|
|
|
|
else { |
1853
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
1854
|
|
|
|
|
|
|
} |
1855
|
|
|
|
|
|
|
} |
1856
|
|
|
|
|
|
|
|
1857
|
|
|
|
|
|
|
# Creating a new link |
1858
|
75
|
|
|
|
|
253
|
debug(1, "LINK: $newfile => $oldfile"); |
1859
|
75
|
|
|
|
|
330
|
my $task = { |
1860
|
|
|
|
|
|
|
action => 'create', |
1861
|
|
|
|
|
|
|
type => 'link', |
1862
|
|
|
|
|
|
|
path => $newfile, |
1863
|
|
|
|
|
|
|
source => $oldfile, |
1864
|
|
|
|
|
|
|
}; |
1865
|
75
|
|
|
|
|
109
|
push @{ $self->{tasks} }, $task; |
|
75
|
|
|
|
|
184
|
|
1866
|
75
|
|
|
|
|
191
|
$self->{link_task_for}{$newfile} = $task; |
1867
|
|
|
|
|
|
|
|
1868
|
75
|
|
|
|
|
134
|
return; |
1869
|
|
|
|
|
|
|
} |
1870
|
|
|
|
|
|
|
|
1871
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1872
|
|
|
|
|
|
|
# Name : do_unlink() |
1873
|
|
|
|
|
|
|
# Purpose : wrap 'unlink' operation for later processing |
1874
|
|
|
|
|
|
|
# Parameters: $file => the file to unlink |
1875
|
|
|
|
|
|
|
# Returns : n/a |
1876
|
|
|
|
|
|
|
# Throws : error if this clashes with an existing planned operation |
1877
|
|
|
|
|
|
|
# Comments : will remove an existing planned link |
1878
|
|
|
|
|
|
|
#============================================================================ |
1879
|
|
|
|
|
|
|
sub do_unlink { |
1880
|
48
|
|
|
48
|
0
|
82
|
my $self = shift; |
1881
|
48
|
|
|
|
|
95
|
my ($file) = @_; |
1882
|
|
|
|
|
|
|
|
1883
|
48
|
100
|
|
|
|
122
|
if (exists $self->{link_task_for}{$file}) { |
1884
|
7
|
|
|
|
|
15
|
my $task_ref = $self->{link_task_for}{$file}; |
1885
|
7
|
50
|
|
|
|
26
|
if ($task_ref->{action} eq 'remove') { |
|
|
50
|
|
|
|
|
|
1886
|
0
|
|
|
|
|
0
|
debug(1, "UNLINK: $file (duplicates previous action)"); |
1887
|
0
|
|
|
|
|
0
|
return; |
1888
|
|
|
|
|
|
|
} |
1889
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'create') { |
1890
|
|
|
|
|
|
|
# Do need to create a link then remove it |
1891
|
7
|
|
|
|
|
25
|
debug(1, "UNLINK: $file (reverts previous action)"); |
1892
|
7
|
|
|
|
|
13
|
$self->{link_task_for}{$file}->{action} = 'skip'; |
1893
|
7
|
|
|
|
|
19
|
delete $self->{link_task_for}{$file}; |
1894
|
7
|
|
|
|
|
12
|
return; |
1895
|
|
|
|
|
|
|
} |
1896
|
|
|
|
|
|
|
else { |
1897
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
1898
|
|
|
|
|
|
|
} |
1899
|
|
|
|
|
|
|
} |
1900
|
|
|
|
|
|
|
|
1901
|
41
|
50
|
33
|
|
|
103
|
if (exists $self->{dir_task_for}{$file} and $self->{dir_task_for}{$file} eq 'create') { |
1902
|
|
|
|
|
|
|
internal_error( |
1903
|
|
|
|
|
|
|
"new unlink operation clashes with planned operation: %s dir %s", |
1904
|
|
|
|
|
|
|
$self->{dir_task_for}{$file}->{action}, |
1905
|
0
|
|
|
|
|
0
|
$file |
1906
|
|
|
|
|
|
|
); |
1907
|
|
|
|
|
|
|
} |
1908
|
|
|
|
|
|
|
|
1909
|
|
|
|
|
|
|
# Remove the link |
1910
|
41
|
|
|
|
|
138
|
debug(1, "UNLINK: $file"); |
1911
|
|
|
|
|
|
|
|
1912
|
41
|
50
|
|
|
|
426
|
my $source = readlink $file or error("could not readlink $file ($!)"); |
1913
|
|
|
|
|
|
|
|
1914
|
41
|
|
|
|
|
240
|
my $task = { |
1915
|
|
|
|
|
|
|
action => 'remove', |
1916
|
|
|
|
|
|
|
type => 'link', |
1917
|
|
|
|
|
|
|
path => $file, |
1918
|
|
|
|
|
|
|
source => $source, |
1919
|
|
|
|
|
|
|
}; |
1920
|
41
|
|
|
|
|
76
|
push @{ $self->{tasks} }, $task; |
|
41
|
|
|
|
|
121
|
|
1921
|
41
|
|
|
|
|
117
|
$self->{link_task_for}{$file} = $task; |
1922
|
|
|
|
|
|
|
|
1923
|
41
|
|
|
|
|
98
|
return; |
1924
|
|
|
|
|
|
|
} |
1925
|
|
|
|
|
|
|
|
1926
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1927
|
|
|
|
|
|
|
# Name : do_mkdir() |
1928
|
|
|
|
|
|
|
# Purpose : wrap 'mkdir' operation |
1929
|
|
|
|
|
|
|
# Parameters: $dir => the directory to remove |
1930
|
|
|
|
|
|
|
# Returns : n/a |
1931
|
|
|
|
|
|
|
# Throws : fatal exception if operation fails |
1932
|
|
|
|
|
|
|
# Comments : outputs a message if 'verbose' option is set |
1933
|
|
|
|
|
|
|
# : does not perform operation if 'simulate' option is set |
1934
|
|
|
|
|
|
|
# Comments : cleans up operations that undo previous operations |
1935
|
|
|
|
|
|
|
#============================================================================ |
1936
|
|
|
|
|
|
|
sub do_mkdir { |
1937
|
19
|
|
|
19
|
0
|
28
|
my $self = shift; |
1938
|
19
|
|
|
|
|
38
|
my ($dir) = @_; |
1939
|
|
|
|
|
|
|
|
1940
|
19
|
100
|
|
|
|
43
|
if (exists $self->{link_task_for}{$dir}) { |
1941
|
3
|
|
|
|
|
6
|
my $task_ref = $self->{link_task_for}{$dir}; |
1942
|
|
|
|
|
|
|
|
1943
|
3
|
50
|
|
|
|
21
|
if ($task_ref->{action} eq 'create') { |
|
|
50
|
|
|
|
|
|
1944
|
|
|
|
|
|
|
internal_error( |
1945
|
|
|
|
|
|
|
"new dir clashes with planned new link (%s => %s)", |
1946
|
|
|
|
|
|
|
$task_ref->{path}, |
1947
|
|
|
|
|
|
|
$task_ref->{source}, |
1948
|
0
|
|
|
|
|
0
|
); |
1949
|
|
|
|
|
|
|
} |
1950
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'remove') { |
1951
|
|
|
|
|
|
|
# May need to remove a link before creating a directory so continue |
1952
|
|
|
|
|
|
|
} |
1953
|
|
|
|
|
|
|
else { |
1954
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
1955
|
|
|
|
|
|
|
} |
1956
|
|
|
|
|
|
|
} |
1957
|
|
|
|
|
|
|
|
1958
|
19
|
50
|
|
|
|
41
|
if (exists $self->{dir_task_for}{$dir}) { |
1959
|
0
|
|
|
|
|
0
|
my $task_ref = $self->{dir_task_for}{$dir}; |
1960
|
|
|
|
|
|
|
|
1961
|
0
|
0
|
|
|
|
0
|
if ($task_ref->{action} eq 'create') { |
|
|
0
|
|
|
|
|
|
1962
|
0
|
|
|
|
|
0
|
debug(1, "MKDIR: $dir (duplicates previous action)"); |
1963
|
0
|
|
|
|
|
0
|
return; |
1964
|
|
|
|
|
|
|
} |
1965
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'remove') { |
1966
|
0
|
|
|
|
|
0
|
debug(1, "MKDIR: $dir (reverts previous action)"); |
1967
|
0
|
|
|
|
|
0
|
$self->{dir_task_for}{$dir}->{action} = 'skip'; |
1968
|
0
|
|
|
|
|
0
|
delete $self->{dir_task_for}{$dir}; |
1969
|
0
|
|
|
|
|
0
|
return; |
1970
|
|
|
|
|
|
|
} |
1971
|
|
|
|
|
|
|
else { |
1972
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
1973
|
|
|
|
|
|
|
} |
1974
|
|
|
|
|
|
|
} |
1975
|
|
|
|
|
|
|
|
1976
|
19
|
|
|
|
|
65
|
debug(1, "MKDIR: $dir"); |
1977
|
19
|
|
|
|
|
76
|
my $task = { |
1978
|
|
|
|
|
|
|
action => 'create', |
1979
|
|
|
|
|
|
|
type => 'dir', |
1980
|
|
|
|
|
|
|
path => $dir, |
1981
|
|
|
|
|
|
|
source => undef, |
1982
|
|
|
|
|
|
|
}; |
1983
|
19
|
|
|
|
|
26
|
push @{ $self->{tasks} }, $task; |
|
19
|
|
|
|
|
46
|
|
1984
|
19
|
|
|
|
|
47
|
$self->{dir_task_for}{$dir} = $task; |
1985
|
|
|
|
|
|
|
|
1986
|
19
|
|
|
|
|
27
|
return; |
1987
|
|
|
|
|
|
|
} |
1988
|
|
|
|
|
|
|
|
1989
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
1990
|
|
|
|
|
|
|
# Name : do_rmdir() |
1991
|
|
|
|
|
|
|
# Purpose : wrap 'rmdir' operation |
1992
|
|
|
|
|
|
|
# Parameters: $dir => the directory to remove |
1993
|
|
|
|
|
|
|
# Returns : n/a |
1994
|
|
|
|
|
|
|
# Throws : fatal exception if operation fails |
1995
|
|
|
|
|
|
|
# Comments : outputs a message if 'verbose' option is set |
1996
|
|
|
|
|
|
|
# : does not perform operation if 'simulate' option is set |
1997
|
|
|
|
|
|
|
#============================================================================ |
1998
|
|
|
|
|
|
|
sub do_rmdir { |
1999
|
7
|
|
|
7
|
0
|
25
|
my $self = shift; |
2000
|
7
|
|
|
|
|
14
|
my ($dir) = @_; |
2001
|
|
|
|
|
|
|
|
2002
|
7
|
50
|
|
|
|
21
|
if (exists $self->{link_task_for}{$dir}) { |
2003
|
0
|
|
|
|
|
0
|
my $task_ref = $self->{link_task_for}{$dir}; |
2004
|
|
|
|
|
|
|
internal_error( |
2005
|
|
|
|
|
|
|
"rmdir clashes with planned operation: %s link %s => %s", |
2006
|
|
|
|
|
|
|
$task_ref->{action}, |
2007
|
|
|
|
|
|
|
$task_ref->{path}, |
2008
|
|
|
|
|
|
|
$task_ref->{source} |
2009
|
0
|
|
|
|
|
0
|
); |
2010
|
|
|
|
|
|
|
} |
2011
|
|
|
|
|
|
|
|
2012
|
7
|
50
|
|
|
|
18
|
if (exists $self->{dir_task_for}{$dir}) { |
2013
|
0
|
|
|
|
|
0
|
my $task_ref = $self->{link_task_for}{$dir}; |
2014
|
|
|
|
|
|
|
|
2015
|
0
|
0
|
|
|
|
0
|
if ($task_ref->{action} eq 'remove') { |
|
|
0
|
|
|
|
|
|
2016
|
0
|
|
|
|
|
0
|
debug(1, "RMDIR $dir (duplicates previous action)"); |
2017
|
0
|
|
|
|
|
0
|
return; |
2018
|
|
|
|
|
|
|
} |
2019
|
|
|
|
|
|
|
elsif ($task_ref->{action} eq 'create') { |
2020
|
0
|
|
|
|
|
0
|
debug(1, "MKDIR $dir (reverts previous action)"); |
2021
|
0
|
|
|
|
|
0
|
$self->{link_task_for}{$dir}->{action} = 'skip'; |
2022
|
0
|
|
|
|
|
0
|
delete $self->{link_task_for}{$dir}; |
2023
|
0
|
|
|
|
|
0
|
return; |
2024
|
|
|
|
|
|
|
} |
2025
|
|
|
|
|
|
|
else { |
2026
|
0
|
|
|
|
|
0
|
internal_error("bad task action: $task_ref->{action}"); |
2027
|
|
|
|
|
|
|
} |
2028
|
|
|
|
|
|
|
} |
2029
|
|
|
|
|
|
|
|
2030
|
7
|
|
|
|
|
34
|
debug(1, "RMDIR $dir"); |
2031
|
7
|
|
|
|
|
40
|
my $task = { |
2032
|
|
|
|
|
|
|
action => 'remove', |
2033
|
|
|
|
|
|
|
type => 'dir', |
2034
|
|
|
|
|
|
|
path => $dir, |
2035
|
|
|
|
|
|
|
source => '', |
2036
|
|
|
|
|
|
|
}; |
2037
|
7
|
|
|
|
|
12
|
push @{ $self->{tasks} }, $task; |
|
7
|
|
|
|
|
18
|
|
2038
|
7
|
|
|
|
|
16
|
$self->{dir_task_for}{$dir} = $task; |
2039
|
|
|
|
|
|
|
|
2040
|
7
|
|
|
|
|
13
|
return; |
2041
|
|
|
|
|
|
|
} |
2042
|
|
|
|
|
|
|
|
2043
|
|
|
|
|
|
|
#===== METHOD =============================================================== |
2044
|
|
|
|
|
|
|
# Name : do_mv() |
2045
|
|
|
|
|
|
|
# Purpose : wrap 'move' operation for later processing |
2046
|
|
|
|
|
|
|
# Parameters: $src => the file to move |
2047
|
|
|
|
|
|
|
# : $dst => the path to move it to |
2048
|
|
|
|
|
|
|
# Returns : n/a |
2049
|
|
|
|
|
|
|
# Throws : error if this clashes with an existing planned operation |
2050
|
|
|
|
|
|
|
# Comments : alters contents of package installation image in stow dir |
2051
|
|
|
|
|
|
|
#============================================================================ |
2052
|
|
|
|
|
|
|
sub do_mv { |
2053
|
2
|
|
|
2
|
0
|
4
|
my $self = shift; |
2054
|
2
|
|
|
|
|
5
|
my ($src, $dst) = @_; |
2055
|
|
|
|
|
|
|
|
2056
|
2
|
50
|
|
|
|
10
|
if (exists $self->{link_task_for}{$src}) { |
|
|
50
|
|
|
|
|
|
2057
|
|
|
|
|
|
|
# I don't *think* this should ever happen, but I'm not |
2058
|
|
|
|
|
|
|
# 100% sure. |
2059
|
0
|
|
|
|
|
0
|
my $task_ref = $self->{link_task_for}{$src}; |
2060
|
|
|
|
|
|
|
internal_error( |
2061
|
|
|
|
|
|
|
"do_mv: pre-existing link task for $src; action: %s, source: %s", |
2062
|
|
|
|
|
|
|
$task_ref->{action}, $task_ref->{source} |
2063
|
0
|
|
|
|
|
0
|
); |
2064
|
|
|
|
|
|
|
} |
2065
|
|
|
|
|
|
|
elsif (exists $self->{dir_task_for}{$src}) { |
2066
|
0
|
|
|
|
|
0
|
my $task_ref = $self->{dir_task_for}{$src}; |
2067
|
|
|
|
|
|
|
internal_error( |
2068
|
|
|
|
|
|
|
"do_mv: pre-existing dir task for %s?! action: %s", |
2069
|
|
|
|
|
|
|
$src, $task_ref->{action} |
2070
|
0
|
|
|
|
|
0
|
); |
2071
|
|
|
|
|
|
|
} |
2072
|
|
|
|
|
|
|
|
2073
|
|
|
|
|
|
|
# Remove the link |
2074
|
2
|
|
|
|
|
10
|
debug(1, "MV: $src -> $dst"); |
2075
|
|
|
|
|
|
|
|
2076
|
2
|
|
|
|
|
12
|
my $task = { |
2077
|
|
|
|
|
|
|
action => 'move', |
2078
|
|
|
|
|
|
|
type => 'file', |
2079
|
|
|
|
|
|
|
path => $src, |
2080
|
|
|
|
|
|
|
dest => $dst, |
2081
|
|
|
|
|
|
|
}; |
2082
|
2
|
|
|
|
|
4
|
push @{ $self->{tasks} }, $task; |
|
2
|
|
|
|
|
30
|
|
2083
|
|
|
|
|
|
|
|
2084
|
|
|
|
|
|
|
# FIXME: do we need this for anything? |
2085
|
|
|
|
|
|
|
#$self->{mv_task_for}{$file} = $task; |
2086
|
|
|
|
|
|
|
|
2087
|
2
|
|
|
|
|
31
|
return; |
2088
|
|
|
|
|
|
|
} |
2089
|
|
|
|
|
|
|
|
2090
|
|
|
|
|
|
|
|
2091
|
|
|
|
|
|
|
############################################################################# |
2092
|
|
|
|
|
|
|
# |
2093
|
|
|
|
|
|
|
# End of methods; subroutines follow. |
2094
|
|
|
|
|
|
|
# FIXME: Ideally these should be in a separate module. |
2095
|
|
|
|
|
|
|
|
2096
|
|
|
|
|
|
|
|
2097
|
|
|
|
|
|
|
#===== PRIVATE SUBROUTINE =================================================== |
2098
|
|
|
|
|
|
|
# Name : internal_error() |
2099
|
|
|
|
|
|
|
# Purpose : output internal error message in a consistent form and die |
2100
|
|
|
|
|
|
|
# Parameters: $message => error message to output |
2101
|
|
|
|
|
|
|
# Returns : n/a |
2102
|
|
|
|
|
|
|
# Throws : n/a |
2103
|
|
|
|
|
|
|
# Comments : none |
2104
|
|
|
|
|
|
|
#============================================================================ |
2105
|
|
|
|
|
|
|
sub internal_error { |
2106
|
0
|
|
|
0
|
0
|
|
my ($format, @args) = @_; |
2107
|
0
|
|
|
|
|
|
my $error = sprintf($format, @args); |
2108
|
0
|
|
|
|
|
|
my $stacktrace = Carp::longmess(); |
2109
|
0
|
|
|
|
|
|
die <
|
2110
|
|
|
|
|
|
|
|
2111
|
|
|
|
|
|
|
$ProgramName: INTERNAL ERROR: $error$stacktrace |
2112
|
|
|
|
|
|
|
|
2113
|
|
|
|
|
|
|
This _is_ a bug. Please submit a bug report so we can fix it! :-) |
2114
|
|
|
|
|
|
|
See http://www.gnu.org/software/stow/ for how to do this. |
2115
|
|
|
|
|
|
|
EOF |
2116
|
|
|
|
|
|
|
} |
2117
|
|
|
|
|
|
|
|
2118
|
|
|
|
|
|
|
=head1 BUGS |
2119
|
|
|
|
|
|
|
|
2120
|
|
|
|
|
|
|
=head1 SEE ALSO |
2121
|
|
|
|
|
|
|
|
2122
|
|
|
|
|
|
|
=cut |
2123
|
|
|
|
|
|
|
|
2124
|
|
|
|
|
|
|
1; |
2125
|
|
|
|
|
|
|
|
2126
|
|
|
|
|
|
|
# Local variables: |
2127
|
|
|
|
|
|
|
# mode: perl |
2128
|
|
|
|
|
|
|
# cperl-indent-level: 4 |
2129
|
|
|
|
|
|
|
# end: |
2130
|
|
|
|
|
|
|
# vim: ft=perl |
2131
|
|
|
|
|
|
|
|
2132
|
|
|
|
|
|
|
############################################################################# |
2133
|
|
|
|
|
|
|
# Default global list of ignore regexps follows |
2134
|
|
|
|
|
|
|
# (automatically appended by the Makefile) |
2135
|
|
|
|
|
|
|
|
2136
|
|
|
|
|
|
|
__DATA__ |