#
# set -o errexit -o noglob are assumed.
#

ex_pkg_dispatch() {
	local _tgt_name="${1}" _pkg_name="${2}"		\
		_restart="${3}" _restart_at="${4}"	\
		_stdout_path _stderr_path		\
		_pipe_path _pipe_path2	_pipe_msg	\
		_script_rc=1;
	if ex_pkg_state_test "${_pkg_name}" finish	\
	&& [ -z "${_restart}" ]				\
	&& [ "${_tgt_name}" != "INVARIANTS" ]; then
		return 0;
	else
		_pipe_path="${WORKDIR}/${_pkg_name}_build.fifo";
		ex_build_fileop rm "${_pipe_path}"; mkfifo "${_pipe_path}";
		_pipe2_path="${WORKDIR}/${_pkg_name}_build2.fifo";
		ex_build_fileop rm "${_pipe2_path}"; mkfifo "${_pipe2_path}";
		_stderr_path="${WORKDIR}/${_pkg_name}_stderr.log";
		_stdout_path="${WORKDIR}/${_pkg_name}_stdout.log";
		ex_build_fileop rm "${_stderr_path}" "${_stdout_path}";
	fi;
	(set -o errexit -o noglob;
	ex_pkg_vars; ex_pkg_env;
	ex_pkg_steps "${_tgt_name}" "${_pkg_name}"	\
		"${_restart}" "${_restart_at}";
	echo "done ${PKG_BASE_DIR}" >&3; read __ <&4;)	\
		1>"${_stdout_path}" 2>"${_stderr_path}"	\
		3<>"${_pipe_path}" 4<>"${_pipe2_path}" &
	while read _pipe_msg <"${_pipe_path}"; do
	case "${_pipe_msg%% *}" in
	done)	echo >"${_pipe2_path}"; _script_rc=0; break; ;;
	*)	break; ;;
	esac; done;
	ex_build_fileop rm "${_pipe_path}" "${_pipe2_path}";
	return "${_script_rc:-1}";
};

# vim:filetype=sh