#!/usr/bin/perl -w
# md5sums -- lintian collection script

# Copyright (C) 1998 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., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.

use strict;

($#ARGV == 1) or fail("syntax: md5sums <pkg> <type>");
my $pkg = shift;
my $type = shift;

-f "fields/package" or fail("md5sums invoked in wrong directory");

unlink("md5sums");
chdir("unpacked")
    or fail("cannot chdir to unpacked directory: $!");

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

my $XARGS=FileHandle->new;
pipeline_open($XARGS, (sub { exec 'xargs', '-0r', 'md5sum' }), "../md5sums")
    or fail("cannot fork: $!");
open(INDEX, '<', "../index")
    or fail("cannot open index file: $!");
while (<INDEX>) {
    next unless m/^-/;
    chop;
    $_ = (split(" ", $_, 6))[5];
    s/ link to .*//;
    s/\\(\d+)/chr(oct($1))/eg;
    s/\\\\/\\/g;
    printf $XARGS "%s\0", $_;
}
close(INDEX);

close($XARGS) or fail("xargs for md5sum exited with code $?");

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;
}