Add /usr/share/grml-live/scripts/repodiff.pl (by formorer, thx!)

[grml-live.git] / scripts / repodiff.pl

diff --git a/scripts/repodiff.pl b/scripts/repodiff.pl
new file mode 100755 (executable)
index 0000000..0752cfa
--- /dev/null
+++ b/scripts/repodiff.pl
@@ -0,0 +1,83 @@
+#!/usr/bin/perl 
+# Filename:      repodiff.pl
+# Purpose:       compare the available packages from two different repositories
+# Authors:       grml-team (grml.org), (c) Alexander Wirt <formorer@grml.org>
+# Bug-Reports:   see http://grml.org/bugs/
+# License:       This file is licensed under the GPL v2 or any later version.
+# Latest change: Sun Oct 28 18:00:49 CET 2007 [mika]
+################################################################################
+# Notice: adjust $c_file[12] according to your needs, by default the script
+# compares the i386 pool with the amd64 pool of grml.
+################################################################################
+
+use strict; 
+use LWP::Simple;
+use Compress::Zlib ;
+
+use AptPkg::Config '$_config';
+use AptPkg::System '$_system';
+use AptPkg::Version;
+
+(my $self = $0) =~ s#.*/##;
+
+# initialise the global config object with the default values
+$_config->init;
+
+# determine the appropriate system type
+$_system = $_config->system;
+
+# fetch a versioning system
+my $vs = $_system->versioning;
+
+sub describe
+{
+    return 'earlier than' if $_[0] < 0;
+    return 'later than'   if $_[0] > 0;
+    'the same as'; 
+}
+
+my $c_file1 = get('http://deb.grml.org/dists/grml-testing/main/binary-i386/Packages.gz'); 
+my $c_file2 = get('http://deb.grml.org/dists/grml-testing/main/binary-amd64/Packages.gz');
+
+my $file1 = Compress::Zlib::memGunzip($c_file1);
+my $file2 = Compress::Zlib::memGunzip($c_file2);
+
+my $file1_tree; 
+my $file2_tree;
+
+my ($package, $version) = "";
+
+foreach my $line (split('\n', $file1)) {
+    if ($line =~ m/^Package: (.*)/) {
+       $package = $1; 
+    } elsif ($line =~ m/^Version: (.*)/) {
+       $file1_tree->{$package} = "$1";
+    }  
+}
+
+foreach my $line (split('\n', $file2)) {
+     if ($line =~ m/^Package: (.*)/) {
+       $package = $1; 
+    } elsif ($line =~ m/^Version: (.*)/) {
+       $file2_tree->{$package} = "$1";
+    }   
+}
+
+
+foreach my $key (keys %{$file1_tree}) {
+    if (defined $file2_tree->{$key}) {
+       print "package $key version " . $file1_tree->{$key} . " on repo1 is ",
+       (describe $vs->compare($file1_tree->{$key}, $file2_tree->{$key})), 
+       " " . $file2_tree->{$key} . " on repo2\n"; 
+    } else {
+       print "$key does not exist on repo2\n"; 
+     }
+}
+
+foreach my $key (keys %{$file2_tree}) {
+    if (not defined $file1_tree->{$key}) {
+        print "$key does not exist on repo1\n";
+    }
+}
+
+# EOF