#!/usr/bin/perl
# Script Name: pull-revu-source
# Author: Nathan Handler <nhandler@ubuntu.com>
# Usage: pull-revu-source <source package>
# Copyright (C) 2009 Nathan Handler <nhandler@ubuntu.com>
# Based on revupull in kubuntu-dev-tools,
# written by Harald Sitter <apachelogger@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 Getopt::Long;

die("Please install 'devscripts'\n") if(! grep -x "$_/dget", split(':',$ENV{'PATH'}));

my $REVU = "revu.ubuntuwire.com";

my($package) = lc($ARGV[0]) || usage();
my($help)=0;
GetOptions('help' => \$help);
usage() if($help);

my $url = "http://" . $REVU . "/p/" . $package;

dget(constructURL(getPage($url),'dsc'));

sub getPage {
	my($url) = @_;
	my($page)=get($url);
	die("Could Not Get $url") unless (defined $page);
	return $page;
}

sub constructURL {
	my($page,$extension) = @_;
	my($url) = $page =~ m/a href=\"(.*?\.$extension)\"/im;
	die("No URL Ending in $extension") unless(defined $url);
	return "http://" . $REVU . $url;
}

sub dget {
	my($dsc) = @_;
	exec("dget -xu $dsc");
}

sub usage {
	my($name)=basename($0);
	die("USAGE: $name [-h] <source package>\n");
}