#!@SH@
#
# ProteanOS Development Kit
# src/prokit.sh
# Main program file
#
# Copyright (C) 2013  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/>.

set -u

# Constant global variables
PACKAGE_NAME='@PACKAGE_NAME@'
PACKAGE_VERSION='@PACKAGE_VERSION@'
PKGDATADIR='@pkgdatadir@'
PKGDATACMDDIR='@pkgdatacmddir@'
OPTSTRING='hV'

# Global variables
loading_cmd=

# use() must be defined inline so it can be used to load other modules.
use()
{
	local module="${1}"
	local default_dir=
	local lib_subdir=
	local dir=

	if [ "x${module%/*}" = "x${module}" ]; then
		default_dir="${PKGDATADIR}"
		lib_subdir=''
	else
		case "${module%/*}" in
			'cmd')
				loading_cmd="$(printf '%s' "${module##*/}" | \
					tr '[A-Z]' '[a-z]' | \
					tr -C '[a-z0-9_]' '_')"
				default_dir="${PKGDATACMDDIR}"
				lib_subdir='cmd'
				;;
		esac
	fi

	dir="${default_dir}"

	if [ -f "${dir}/${module##*/}.sm" ]; then
		. "${dir}/${module##*/}.sm"
	else
		printf '%s: Error: Failed to load module "%s": %s\n' \
			"${0##*/}" "${module}" 'no such file or directory' >&2
		exit 2
	fi
}

use locale
use cmd
use getopt

main()
{
	local cmd=

	load_locale
	load_cmds

	get_options "${@}"
	shift $(($OPTIND - 1))

	if ${opt_h:-false}; then
		cmd='help'
	elif ${opt_V:-false}; then
		cmd='version'
	elif [ ${#} -lt 1 ]; then
		cmd_help_main >&2
		exit 1
	else
		cmd="${1}"
		shift
	fi

	run_cmd "${cmd}" "${@}"

	return ${?}
}

main "${@}"