packager: Package scriptlets

[people/ms/pakfire.git] / src / scripts / find-prerequires

#!/bin/bash
###############################################################################
#                                                                             #
# Pakfire - The IPFire package management system                              #
# Copyright (C) 2021 Pakfire development team                                 #
#                                                                             #
# 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/>.       #
#                                                                             #
###############################################################################

error() {
	echo "${0#/}: $@" >&2
}

set -x

main() {
	local scriptlet="${1}"

	if [ ! -r "${scriptlet}" ]; then
		error "Input file is not readable"
		return 1
	fi

	cat "${scriptlet}" >&2

	# We require a shell
	echo "/bin/sh"

	local req
	while read -r req; do
		case "${req}" in
			/*)
				echo "${req}"
				;;
			*)
				which "${req}"
				;;
		esac
	done < <(bash --rpm-requires < "${scriptlet}" | sed -e "s/^.*(//;s/)$//" | sort -u)

	return 0
}

main "$@" || exit $?