#!/usr/bin/perl
# unpack-srcpkg-l2 -- lintian unpack script (source packages level 2)
#
# syntax: unpack-srcpkg-l2 <base-dir>

# Copyright (C) 1998 Christian Schwarz and Richard Braakman
#
# 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 2 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.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, you can find it on the World Wide
# Web at http://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
# MA 02111-1307, USA.

use strict;

use FileHandle;

use lib "$ENV{'LINTIAN_ROOT'}/lib";
use Pipeline;

($#ARGV == 0) or fail("syntax: unpack-srcpkg-l2 <base-dir>");
my $base_dir = shift;
my $unpack_dir;

print "N: Unpacking source package in directory $base_dir ...\n" if $::verbose;
chdir($base_dir);

my $IN = FileHandle->new;
pipeline_open($IN, sub {
	my $ret=exec 'dpkg-source', '-x', 'dsc';
	$ret;
    }) or fail("cannot run dpkg-source: $!");

while (<$IN>) {
    chop;
    $unpack_dir = $1
	if (/^dpkg-source: extracting [^\s]+ in (\S+)/);
}
close($IN) or fail("error occured during execution of dpkg-source in $base_dir: $!");
$unpack_dir or fail("dpkg-source didn't report unpack directory");

# create link to unpack directory
symlink($unpack_dir, "unpacked")
    or fail("cannot symlink to unpack directory $unpack_dir");

# fix permissions
spawn('chmod', '-R', 'u+rwX,o+rX,o-w', $unpack_dir) == 0 or fail();

exit 0;

# -------------------------------

sub fail {
  if ($_[0]) {
    print STDERR "internal error: $_[0]\n";
  } elsif ($!) {
    print STDERR "internal error: $!\n";
  } else {
    print STDERR "internal error.\n";
  }
  exit 1;
}
