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#!/bin/bash
# Generates a patch for a nonfree PKGBUILD
#
# Copyright 2010 Nicolás Reynolds

# ---------- GNU General Public License 3 ----------

# This file is part of Parabola.

# Parabola 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.

# Parabola 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 Parabola. If not, see <http://www.gnu.org/licenses/>.

. /etc/libretools.conf

cmd=${0##*/}

usage() {
	echo "Usage: $cmd <pkgname> [<pkgname2> ...]"
	echo "Requirements:"
	echo " * Have a <pkgname>/ directory with nonfree build scripts inside"
	echo " * Have a <pkgname>-libre/ directory with libre build scripts inside"
}

main() {
	local packages=("$@")
	if [[ ${packages[#]} = 0 ]]; then
		usage
		exit 1
	fi

	for package in "${packages[@]}"; do
		if [[ ! -f ./${package}/PKGBUILD  || ! -f ./${package}-libre/PKGBUILD ]]
		then
			error "Build scripts not found for ${package}(-libre)"
		else

		. ./${package}-libre/PKGBUILD
		[[ -z ${pkgbase} ]] && pkgbase=${pkgname}

		# Generate a diff file, no -r since we don't want to patch src/ nor pkg/
		diff -auN ${package} ${package}-libre > $PATCHDIR/${pkgbase}-${pkgver}-${pkgrel}.patch
	done

	exit 0
}

main "$@"