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package install_misc::UpgradeBackup;
# Copyright (C) 2008 LibLime
# This file is part of Koha.
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
use File::Compare qw(compare);
use Cwd qw(cwd);
use File::Copy;
use File::Find;
use File::Spec;
use Exporter;
use vars qw(@ISA @EXPORT $VERSION);
@ISA = ('Exporter');
@EXPORT = ('backup_changed_files');
$VERSION = '3.00';
=head1 NAME
This is a helper module used during a 'make upgrade' that
creates backups of files updated during an upgrade.
sub backup_changed_files {
my $from_to = shift;
my $suffix = shift;
my $verbose = shift;
my $inc_uninstall = shift;
my $cwd = cwd();
foreach my $sourceroot (sort keys %$from_to) {
my $targetroot = $from_to->{$sourceroot};
my $currdir = File::Spec->catdir($cwd, $sourceroot);
next unless -d $currdir;
chdir $currdir or die "could not change to $currdir: $!";
# expand path
find(sub {
return unless -f $_;
my $filename = $_;
my $targetdir = File::Spec->catdir($targetroot, $File::Find::dir);
my $targetfile = File::Spec->catfile($targetdir, $filename);
my $sourcedir = File::Spec->catdir($currdir, $File::Find::dir);
my $sourcefile = File::Spec->catfile($sourcedir, $filename);
if (-f $targetfile) {
my ($size) = (stat $sourcefile)[7];
my $backup = $targetfile . $suffix;
unless (-s $targetfile == $size and not compare($sourcefile, $targetfile)) {
print "Backed up $targetfile to $backup\n";
File::Copy::copy($targetfile, $backup);
}, ".");
=head1 AUTHOR
Code based on parts of ExtUtils::Install in order to
approximately track how it identifies files to
Koha Development Team <>
Galen Charlton <>
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