#

# set -o noglob is assumed.

#

BUILD_ARGS_SPEC="

	ARG_IPV4_ONLY:-4:

	ARG_IPV6_ONLY:-6:

	ARCH:arg:-a:

	BUILD:arg:-b:

	ARG_CLEAN:-c:

	ARG_CLEAN_BUILDS:arg:-C:

	ARG_DEBUG_MINIPIX:--debug-minipix:

	ARG_OFFLINE:-N:

	ARG_PACKAGE:-p:

	ARG_PARALLEL:optarg:-P:auto

	ARG_RELAXED:-R:

	ARG_RESTART:arg:-r:

	ARG_TARBALL:selfarg:-t:

	ARG_TARBALL:selfarg:-t.bz2;

	ARG_TARBALL:selfarg:-t.gz:

	ARG_TARBALL:selfarg:-t.xz:

	ARG_VERBOSE:selfarg:-v:

	ARG_VERBOSE:selfarg:-vv:

	ARG_VERBOSE:selfarg:-vvv:

	ARG_XTRACE:-x:";

build_args() {

	local _spec="${BUILD_ARGS_SPEC}" _spec_arg _found;

	while [ ${#} -gt 0 ]; do

		if [ "${1#-}" = "${1}" ]; then

			break;

		fi;

		for _spec_arg in ${_spec}; do

			case "${_spec_arg}" in

			*:${1}:*)

				case "${_spec_arg#*:}" in

				arg:*)

					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${2}"; shift; ;;

				optarg:*)

					if [ -n "${2}" ]\

					&& [ "x${2#-}" = "x${2}" ]; then

						ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${2}";

						shift;

					else

						ex_rtl_set_var_unsafe "${_spec_arg%%:*}"	\

							"${_spec_arg##*:}";

					fi; ;;

				selfarg:*)

					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${1}"; ;;

				*)

					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" 1; ;;

				esac; _found=1; break; ;;

			*)	_found=0; ;;

			esac;

		done;

		if [ "${_found:-0}" -eq 0 ]; then

			exec cat etc/build.usage;

		else

			shift;

		fi;

	done;

	if [ -n "${ARG_CLEAN_BUILDS}" ]; then

		ARG_CLEAN_BUILDS="$(echo "${ARG_CLEAN_BUILDS}" | sed "s/,/ /g")";

	fi;

	if [ -n "${ARG_CLEAN_BUILDS}" ]\

	|| [ "${ARG_PACKAGE:-0}" -eq 1 ]\

	&& [ -n "${ARG_TARBALL}" ]; then

		unset ARG_TARBALL;

	elif [ -n "${ARG_TARBALL}" ]; then

		if [ "${ARG_TARBALL#-t.}" != "${ARG_TARBALL}" ]; then

			TARBALL_SUFFIX="${ARG_TARBALL#-t.}";

		else

			TARBALL_SUFFIX=xz;

		fi;

	fi;

	case "${ARG_VERBOSE}" in

	-v)	ARG_VERBOSE=1; ;;

	-vv)	ARG_VERBOSE=2; ;;

	-vvv)	ARG_VERBOSE=3; ;;

	esac;

	if [ "${ARG_XTRACE:-0}" -eq 1 ]; then

		ARG_VERBOSE=2;

	fi;

	if [ -n "${ARG_RESTART}" ]; then

		if [ "${ARG_RESTART%:*}" != "${ARG_RESTART}" ]; then

			ARG_RESTART_AT="${ARG_RESTART#*:}"; ARG_RESTART="${ARG_RESTART%:*}";

		else

			ARG_RESTART_AT=ALL;

		fi;

		ARG_RESTART="$(echo "${ARG_RESTART}" | sed "s/,/ /g")";

	fi;

	while [ ${#} -gt 0 ]; do

	case "${1}" in

	*=*)	ex_rtl_set_var_unsafe "${1%%=*}" "${1#*=}"; ;;

	*)	BUILD_TARGETS="${BUILD_TARGETS:+${BUILD_TARGETS} }${1}"; ;;

	esac; shift; done;

};

# vim:filetype=sh