#!/usr/bin/perl
#
# MAINTAINER= miwi@FreeBSD.org
#
# $FreeBSD$
#

use strict;

my $pr = shift;
my $user = shift;
my $ssh;

if ($pr eq "") {
	print STDERR "getpr prnum [username]\n";
	exit 1
}

if( !defined $ENV{"CVS_RSH"} ) {
        $ssh = "ssh";
} else {
	$ssh = $ENV{"CVS_RSH"};
}

if ($user ne "") {
	$user = "$user@";
}

my $pr_num   = "PR_" . $pr;
my $pr_patch = "PR_" . $pr . ".patch";

# get the PR off of freefall

open(D, "> $pr_num") or die "$pr_num: $!";
open(PATCH, "> $pr_patch") or die "$pr_patch: $!";
open(PR, " ${ssh} ${user}freefall.freebsd.org query-pr -F $pr | ") or die $!;

my $fix = "";
my $infix = 0;

while(<PR>) {
	print D;

	if (m/^>Release-Note:/) {
		$infix = 0;
	}
	if ($infix == 1) {
		print PATCH;
	}
	if (m/^>Fix:/) {
		$infix = 1;
	}
}
close(D);
close(PR);
close(PATCH);

# decode the submission attempting to find a file attachment by extension
# .tar.gz, .shar or just .gz, if not found, display what we think of as
# the file submission (probably just a patch)

open(PATCH, $pr_patch);
while(<PATCH>) {
	if (m/^# This is a shell archive.  Save it in a file, remove anything before/) {
		&shar;
		exit;
	}
	if (m/^begin (\d+)? (.*)/) {
		&uudecode($2);
		close(PATCH);
		exit;
	}
}

close(PATCH);
system("more $pr_patch");

exit;

sub uudecode {
	my ($fname) = @_;

	$fname =~ s/\s+$//g;
	print "$fname\n";

	print `uudecode $pr_patch`;
	if (($fname =~ m/.tar.gz$/) || ($fname =~ m/.tgz$/)) {
		print "you may extract this tarball by typing tar xvzf $fname\n";
	} elsif ($fname =~ m/.gz$/) {
		print `gunzip $fname`;
	}
}

sub shar {
	print "you may extract this shar archive by typing sh $pr_patch\n";
}