install_misc/UpgradeBackup.pm

   1 package install_misc::UpgradeBackup;
   2
   3 # Copyright (C) 2008 LibLime
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use strict;
  21 #use warnings; FIXME - Bug 2505
  22 use File::Compare qw(compare);
  23 use Cwd qw(cwd);
  24 use File::Copy;
  25 use File::Find;
  26 use File::Spec;
  27 use Exporter;
  28
  29 use vars qw(@ISA @EXPORT );
  30
  31 @ISA = ('Exporter');
  32 @EXPORT = ('backup_changed_files');
  33
  34 =head1 NAME
  35
  36 install_misc::UpgradeBackup
  37
  38 =head1 DESCRIPTION
  39
  40 This is a helper module used during a 'make upgrade' that
  41 creates backups of files updated during an upgrade.
  42
  43 =cut
  44
  45 sub backup_changed_files {
  46     my $from_to = shift;
  47     my $suffix = shift;
  48     my $verbose = shift;
  49     my $inc_uninstall = shift;
  50
  51     my $cwd = cwd();
  52     foreach my $sourceroot (sort keys %$from_to) {
  53         my $targetroot = $from_to->{$sourceroot};
  54         my $currdir = File::Spec->catdir($cwd, $sourceroot);
  55
  56         next unless -d $currdir;
  57
  58         chdir $currdir or die "could not change to $currdir: $!";
  59
  60         # expand path
  61         find(sub {
  62             return unless -f $_;
  63             my $filename = $_;
  64
  65             my $targetdir  = File::Spec->catdir($targetroot, $File::Find::dir);
  66             my $targetfile = File::Spec->catfile($targetdir, $filename);
  67             my $sourcedir  = File::Spec->catdir($currdir, $File::Find::dir);
  68             my $sourcefile = File::Spec->catfile($sourcedir, $filename);
  69
  70             if (-f $targetfile) {
  71                 my ($size) = (stat $sourcefile)[7];
  72                 my $backup = $targetfile . $suffix;
  73                 unless (-s $targetfile == $size and not compare($sourcefile, $targetfile)) {
  74                     print "Backed up $targetfile to $backup\n";
  75                     File::Copy::copy($targetfile, $backup);
  76                 }
  77             }
  78         }, ".");
  79     }
  80 }
  81
  82 =head1 AUTHOR
  83
  84 Code based on parts of ExtUtils::Install in order to
  85 approximately track how it identifies files to
  86 install.
  87
  88 Koha Development Team <http://koha-community.org/>
  89
  90 Galen Charlton <galen.charlton@liblime.com>
  91
  92 =cut
  93
  94 1;