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executable file 83 lines (65 sloc) 2.294 kb
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#!/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.
################################################################################
# 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
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