duntarball.old

#!/bin/bash
#
# Untar a tarball regardless of it's compression format (or lack thereof)
#

source ${SCRIPTS}/functions.sh

if [ -z "${1}" ]; then
	die "Usage: ${0} [ --patch ] <tarball>"
fi

if [ "${1}" == "--patch" ]; then
	PATCH="yes"
	TARBALL=${2}
else
	TARBALL=${1}
fi

if [ -z ${TARBALL} ]; then
	die "Usage: ${0} [ --patch ] <tarball>"
fi

FILETYPE=`file "${TARBALL}"`

if echo "${FILETYPE}" | grep gzip >/dev/null; then
	CMD="tar zpxf"
	if [ -n "$(echo ${TARBALL} | grep tar)" ]; then
		EXT=".tar.gz"
	else
		EXT=".tgz"
	fi
elif echo "${FILETYPE}" | grep bzip2 >/dev/null; then
	CMD="tar jpxf"
	if [ -n "$(echo ${TARBALL} | grep tar)" ]; then
		EXT=".tar.bz2"
	elif [ -n "$(echo ${TARBALL} | grep tbz2)" ]; then
		EXT=".tbz2"
	else
		EXT=".tbz"
	fi
elif echo "${FILETYPE}" | grep tar >/dev/null; then
	CMD="tar pxf"
	EXT=".tar"
elif echo "${FILETYPE}" | grep Zip >/dev/null; then
	CMD="unzip"
	EXT=".zip"
elif echo "${FILETYPE}" | grep RAR >/dev/null; then
	CMD="unrar e"
	EXT=".rar"
else
	echo "${0}: ${1} not recognized"
	echo "FILETYPE: ${FILETYPE}"
	exit
fi

BASENAME=$(basename ${TARBALL} ${EXT})
if [ ! -d ${BASENAME} ]; then
	${CMD} "${TARBALL}" || die "${CMD} failed"
fi

if [ -n "${PATCH}" ]; then
	if [ -d ${BASENAME} ]; then
		# Directory exists; get a .orig
		TEMPNAME=$(tempfile -d .)
		rm -f ${TEMPNAME}
		mv ${BASENAME} ${TEMPNAME} || die "mv ${BASENAME} ${TEMPNAME} failed"
		${CMD} "${TARBALL}" || die "${CMD} failed"
		mv ${BASENAME} ${BASENAME}.orig || die "mv failed"
		mv ${TEMPNAME} ${BASENAME} || die "mv ${TEMPNAME} ${BASENAME} failed"
	else
		mv ${BASENAME} ${BASENAME}.orig || die "mv failed"
		${CMD} "${TARBALL}" || die "${CMD} failed"
	fi
fi