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 $VERSION);
  30
  31 @ISA = ('Exporter');
  32 @EXPORT = ('backup_changed_files');
  33 $VERSION = '3.00';
  34
  35 =head1 NAME
  36
  37 install_misc::UpgradeBackup
  38
  39 =head1 DESCRIPTION
  40
  41 This is a helper module used during a 'make upgrade' that
  42 creates backups of files updated during an upgrade.
  43
  44 =cut
  45
  46 sub backup_changed_files {
  47     my $from_to = shift;
  48     my $suffix = shift;
  49     my $verbose = shift;
  50     my $inc_uninstall = shift;
  51
  52     my $cwd = cwd();
  53     foreach my $sourceroot (sort keys %$from_to) {
  54         my $targetroot = $from_to->{$sourceroot};
  55         my $currdir = File::Spec->catdir($cwd, $sourceroot);
  56
  57         next unless -d $currdir;
  58
  59         chdir $currdir or die "could not change to $currdir: $!";
  60
  61         # expand path
  62         find(sub {
  63             return unless -f $_;
  64             my $filename = $_;
  65
  66             my $targetdir  = File::Spec->catdir($targetroot, $File::Find::dir);
  67             my $targetfile = File::Spec->catfile($targetdir, $filename);
  68             my $sourcedir  = File::Spec->catdir($currdir, $File::Find::dir);
  69             my $sourcefile = File::Spec->catfile($sourcedir, $filename);
  70
  71             if (-f $targetfile) {
  72                 my ($size) = (stat $sourcefile)[7];
  73                 my $backup = $targetfile . $suffix;
  74                 unless (-s $targetfile == $size and not compare($sourcefile, $targetfile)) {
  75                     print "Backed up $targetfile to $backup\n";
  76                     File::Copy::copy($targetfile, $backup);
  77                 }
  78             }
  79         }, ".");
  80     }
  81 }
  82
  83 =head1 AUTHOR
  84
  85 Code based on parts of ExtUtils::Install in order to
  86 approximately track how it identifies files to
  87 install.
  88
  89 Koha Development Team <http://koha-community.org/>
  90
  91 Galen Charlton <galen.charlton@liblime.com>
  92
  93 =cut
  94
  95 1;