File: update-id

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cfengine2 2.1.14-1sarge1
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#! /usr/bin/perl -i~
#
# Edit the patch version specified in either source code or patch

use strict;
use warnings;
use Getopt::Std;

my %opts;
getopts('v:', \%opts);

sub get_version {
    open(DP, "dpkg-parsechangelog |");
    while (<DP>) {
	return 'Debian ' . $1 if /^Version: (.*)$/;
    }
    return 0;
}

my $ver = $opts{'v'} || get_version() || die("Unable to get version");
my $rex = qr/(?<=\$PatchVersion: ).*(?= \$)/;

while (<>) {
    s/$rex/$ver/;
    print;
}

exit 0;