#!/usr/bin/perl -w

# Use this script to build a .deb from CVS. Creates .debs with
# version numbers like: 0.YYYYMMDD-cvsXX where XX is the build
# number of the day.

use POSIX qw(strftime);

my $version = '1.2';

$ENV{'DEBCVS'} = 1;

unless (-d 'debian') {
    chdir ".." or die "Couldn't chdir ..: $!\n";
    unless (-d 'debian') {
        die "$0: Must be run from either the parent of the debian/ dir or within debian/.\n";
    }
} 

my $date = strftime("%Y%m%d", localtime);
my $posixtime = strftime("%a, %d %b %Y %H:%M:%S %z", localtime);

my $email = $ENV{'EMAIL'} || 'Ben Gertzfield <che@debian.org>';

my @changelog;

open CHANGELOG, "debian/changelog" or die "Couldn't open changelog: $!\n";

my $first_line = <CHANGELOG>;
push @changelog, $first_line;

my ($old_version) = ($first_line =~ /\S+\s+\((.*?)\)\s+/);
my $new_version;

print "old ver: $old_version, date: $date\n";

if ($old_version =~ /0\.$date-cvs(\d*)/) {
    if ($1) {
        $new_version = sprintf("0.%s-cvs%d", $date, $1 + 1);
    } else {
        $new_version = "0.$date-cvs1";
    }
} else {
    $new_version = "0.$date-cvs1";
}

push @changelog, <CHANGELOG>;

close CHANGELOG;

open NEWCHANGE, ">debian/changelog" or die "Couldn't open changelog for writing: $!\n";

print NEWCHANGE "gimp$version ($new_version) unstable; urgency=low

  * CVS build.

 -- $email  $posixtime\n\n";

print NEWCHANGE @changelog;

close NEWCHANGE;

system("./autogen.sh") and die "autogen.sh failed: $@\n";

system("dpkg-buildpackage -rfakeroot") and die "dpkg-buildpackage -rfakeroot failed: $@\n";