#!/usr/bin/perl
# unpack-srcpkg-l2 -- lintian unpack script

# Copyright (C) 1998 by 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.

require "$ENV{'LINTIAN_ROOT'}/lib/pipeline.pl";

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

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

# Ignore dpkg-source output to STDERR. Such output is typically whining
# about the user id not matching the utmp record.
pipeline_open(IN, sub {
	open(SAVEERR, ">&STDERR");
	close STDERR;
	my $ret=exec 'dpkg-source', '-x', 'dsc';
	open(STDERR, ">&SAVEERR");
	$ret;
    }) or fail("cannot run dpkg-source: $!");

my $unpack_dir;
while (<IN>) {
    chop;
    $unpack_dir = $1
	if (/^dpkg-source: extracting [\w\-\.]+ in (\S+)/);
}
close(IN) or fail("error occured during execution of dpkg-source: $!");
$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+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;
}
