#! /usr/bin/perl
#
# ex:ts=8 sw=4:
# $OpenBSD: minitar,v 1.1 2005/07/20 15:33:50 espie Exp $
#
# Copyright (c) 2005 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use OpenBSD::Ustar;
use strict;

my $mode = shift;
my $arcname;
my ($what, $verbose);

sub create
{
	my $arcname = shift;
	open my $out, '>', $arcname or die "bad archive $arcname: $!\n";
	my $arc = OpenBSD::Ustar->new($out, '.');
	for my $f (@_) {
		my $e = $arc->prepare($f);
		$e->write();
	}
	$arc->close();
}

sub extract
{
	my $arcname = shift;
	open my $in, '<', $arcname or die "bad archive $arcname: $!\n";
	my $arc = OpenBSD::Ustar->new($in);
	while (my $e = $arc->next()) {
		$e->create();
	}
	$arc->close();
}

sub test
{
	my $arcname = shift;
	open my $in, '<', $arcname or die "bad archive $arcname: $!\n";
	my $arc = OpenBSD::Ustar->new($in);
	while (my $e = $arc->next()) {
		print $e->{name}, "\n";
	}
	$arc->close();
}

if ($mode =~ s/c//) {
	$what = \&create;
} elsif ($mode =~ s/t//) {
	$what = \&test;
} elsif ($mode =~ s/x//) {
	$what = \&extract;
}
if ($mode =~ s/f//) {
	$arcname = shift;
}
if ($mode =~ s/v//) {
	$verbose = 1;
}

if ($mode ne '') {
	die "Bad mode\n";
}

if (!defined $what) {
	die "Bad mode\n";
}

&$what($arcname, @ARGV);