#!/bin/sh
# This script emulates and extends the lz and uz commands of the mtools.
# It handles: .tar, .tar.gz, .tar.bz2, .tar.xz and .tar.lzma, through the
# standards options of GNU tar.
# If the script name is "lz", the archive content is displayed. If the name
# is "uz", it is extracted.

PROGRAM=`basename $0`

if [ "$PROGRAM" = "lz" ] ; then
	ACTION="t"
elif [ "$PROGRAM" = "uz" ] ; then
	ACTION="x"
else
	echo '$0 = "'"$0"' (not "lz" nor "uz")!'
	exit 1
fi

if [ `basename "$1" .tar` != "$1" ] ; then
	FORMAT=""
elif [ `basename "$1" .tar.gz` != "$1" ] ; then
	FORMAT="--gzip"
elif [ `basename "$1" .tar.bz2` != "$1" ] ; then
	FORMAT="--bzip"
elif [ `basename "$1" .tar.xz` != "$1" ] ; then
	FORMAT="--xz"
elif [ `basename "$1" .tar.lzma` != "$1" ] ; then
	FORMAT="--lzma"
fi

tar "$FORMAT" -"$ACTION"f "$@"