#!@@SHELL@@
#
# opkhelper
# lib/archive
# Functions for handling archive files.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

oh_archive_extract_source()
{
	_matches=$(echo ../${OH_SRCPKG}-${OH_PKGVER%-*}.tar.*)

	if [ "${_matches}" = ../${OH_SRCPKG}-${OH_PKGVER%-*}.tar.\* ]; then
		# No archive found.
		return 1
	fi

	if [ -n "$(echo "${_matches}" | grep ' ')" ]; then
		# Multiple archives found.
		return 2
	fi

	# Detect the compression format.
	# Note: dpkg's source format version 3 supports gzip, bzip2, LZMA, and XZ.
	# We support gzip, bzip2, LZMA, and compress, since these are the formats
	# supported by BusyBox tar.
	_z_ext=${_matches#"../${OH_SRCPKG}-${OH_PKGVER%-*}.tar."}
	case ${_z_ext} in
		gz)
			_z=z
			;;
		bz2)
			_z=j
			;;
		lz)
			_z=a
			;;
		Z)
			_z=Z
			;;
		*)
			return 3
			;;
	esac

	_files=$(tar -t${_z}f ../${OH_SRCPKG}-${OH_PKGVER%-*}.tar.${_z_ext} | \
		sed 's@^./@@' | grep '^[^/]*/$')

	if [ -z "${_files}" ]; then
		return 4
	fi
	if [ "$(echo "${_files}" | wc -l)" -ne 1 ]; then
		return 5
	fi

	tar -x${_z}f ../${OH_SRCPKG}-${OH_PKGVER%-*}.tar.${_z_ext} || return 6

	mv "${_files}" src || return 7
}