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#!/usr/bin/perl
# Script Name: pull-debian-source
# Author: Nathan Handler <nhandler@ubuntu.com>
# Usage: pull-debian-source <source package> [release]
# Copyright (C) 2008, 2009 Nathan Handler <nhandler@ubuntu.com>
# License: GNU General Public License
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# On Debian GNU/Linux systems, the complete text of the GNU General
# Public License can be found in the /usr/share/common-licenses/GPL-3 file.
use warnings;
use strict;
use LWP::Simple;
use File::Basename;
use Getopt::Long;
use AptPkg::Version;
die("Please install 'devscripts'\n") if(! grep -x "$_/dget", split(':',$ENV{'PATH'}));
my($package)=$ARGV[0] || &usage();
my($help)=0;
GetOptions('help' => \$help);
&usage() if($help);
my($release)=$ARGV[1] || 'unstable';
$release=&convertCodeName($release);
&checkRelease($release);
my($dsc)=&getDSC(&getMadison(&getURL($package,$release)));
print "$dsc\n";
exec("dget -xu $dsc");
sub convertCodeName {
my($release)=shift || die("No Release Passed To convertCodeName!\n");
chomp $release;
if($release=~m/^lenny$/i) {
return "stable";
}
elsif($release=~m/^squeeze$/i) {
return "testing";
}
elsif($release=~m/^sid$/i) {
return "unstable";
}
elsif($release=~m/^etch$/i) {
return "oldstable";
}
return $release;
}
sub checkRelease {
my($release)=shift || die("No Release Passed To checkRelease!\n");
chomp $release;
my %releases=(
'stable' => 1,
'testing' => 1,
'unstable' => 1,
'experimental' => 1,
'oldstable' => 1
);
&invalidRelease(\%releases) unless $releases{$release}
}
sub getURL{
my($package)=shift || die("No Package Passed To getURL: $!\n");
my($release)=shift || die("No Release Passed to getURL: $!\n");
chomp $package;
chomp $release;
$package=lc($package);
$package=~s/\+/%2b/g;
$release=lc($release);
my($baseURL)='http://qa.debian.org/madison.php?text=on';
my($url)=$baseURL . '&package=' . $package . '&s=' . $release;
return $url;
}
sub getMadison {
my($url)=shift || die("No URL Passed to getMadison: $!\n");
chomp $url;
my($madison)=get($url);
die("Could Not Get $url") unless (defined $madison && $madison!~m/^\s*$/);
return $madison;
}
sub getDSC {
my($madison)=shift || die("No madison Passed to getDSC: $!\n");
if($madison=~m/^[WE]:/i) {
die("$madison");
}
my($baseURL)='http://ftp.debian.org/debian/pool/';
my(@madison)=split(/\n/,$madison);
my %urls;
my $url;
foreach my $line (@madison) {
$url = $baseURL;
my($package,$version,$release,$archs)=split(/\|/,$line,4);
$package=~s/\s*//g;
$version=~s/\s*//g;
$release=~s/\s*//g;
$archs=~s/\s*//g;
$version=~s/^.*?\://;
if($archs=~m/source/) {
print "Package: $package\nVersion: $version\nRelease: $release\nArchitectures: $archs\n";
my($firstLetter);
if($package=~m/^lib/) {
$firstLetter="lib" . substr($package,3,1);
}
else {
$firstLetter=substr($package,0,1);
}
if($release=~m/contrib/) {
$url .= 'contrib/';
}
elsif($release=~m/non\-free/) {
$url .= 'non-free/';
}
else {
$url .= 'main/';
}
$url .= $firstLetter . '/' . $package . '/' . $package . '_' . $version . '.dsc';
$urls{$version} = $url;
}
}
my @vers = reverse sort AptPkg::Version::CmpVersion keys %urls;
return $urls{$vers[0]} or die("Unable To Find Source Package On Madison\n");
}
sub usage {
my($name)=basename($0);
die("USAGE: $name [-h] <source package> [target release]\n");
}
sub invalidRelease {
my($releases)=shift || die("Invalid Release!");
my(%releases)=%$releases;
my($validReleases);
while ( my ($key, $value) = each(%releases) ) {
if($value) {
$validReleases .= $key . ", ";
}
}
$validReleases=~s/,\s*$//;
die("Invalid Release!\nValid Releases: $validReleases\n");
}
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