#

# set -o errexit -o noglob are assumed.

#

exp_pkg_exec_pre() {

	local _pkg_name="${1}" _tgt_name="${2}" _restart_at="${3}";

	if [ -z "${PKG_URL}" ]\

	&& [ -z "${PKG_URLS_GIT}" ]\

	&& [ -z "${PKG_VERSION}" ]\

	&& ! ex_rtl_test_cmd "pkg_${_pkg_name}_all"; then

		"${_dispatch_fn}" exec_missing "${_pkg_name}" "${_tgt_name}";

		return 1;

	elif ! ex_pkg_state_test "${_pkg_name}" "start" "${_restart_at}"; then

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

			ex_rtl_fileop rm "${PKG_BASE_DIR}" "${PKG_BUILD_DIR}" "${PKG_DESTDIR}";

			ex_rtl_fileop mkdir "${PKG_BASE_DIR}";

		fi;

		ex_rtl_fileop mkdir "${PKG_BUILD_DIR}" "${PKG_DESTDIR}";

		ex_pkg_state_set "${_pkg_name}" "start";

	fi;

	ex_rtl_fileop cd "${PKG_BUILD_DIR}";

};

ex_pkg_exec() {

	local _pkg_name="${1}" _tgt_name="${2}" _restart_at="${3}"			\

		_step="" _step_cmd="" _step_cmd_pfx="" _step_rc="";

	trap "if [ \${?} -eq 0 ]; then							\

		echo \"done ${_pkg_name} ${_tgt_name}\" >&3;				\

	      else									\

		echo \"fail ${_pkg_name} ${_tgt_name}\" >&3;				\

		pkill -U "${$}";							\

	      fi;" EXIT HUP INT TERM USR1 USR2;

	exp_pkg_exec_pre "${_pkg_name}" "${_tgt_name}" "${_restart_at}";

	"${_dispatch_fn}" exec_start "${_pkg_name}" "${_tgt_name}";

	if ex_rtl_test_cmd "pkg_${_pkg_name}_all"; then

		"pkg_${_pkg_name}_all" "${_restart_at}";

	else	set -- ${PKG_BUILD_STEPS};

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

			_step="${1}"; shift;

			if ex_pkg_state_test "${_pkg_name}" "${_step}"			\

					"${_restart_at}"; then

				continue;

			else	ex_rtl_try_run						\

					"pkg_${_pkg_name}_${_step}_pre"			\

					"${_pkg_name}" "${_tgt_name}" "${_restart_at}";

				if ex_rtl_test_cmd "pkg_${_pkg_name}_${_step}"; then

					ex_rtl_try_run "pkg_${_pkg_name}_${_step}"	\

						"${_pkg_name}" "${_tgt_name}" "${_restart_at}";

				else

					ex_rtl_try_run "pkg_${_step}"			\

						"${_pkg_name}" "${_tgt_name}" "${_restart_at}";

				fi;

				ex_rtl_try_run						\

					"pkg_${_pkg_name}_${_step}_post"		\

					"${_pkg_name}" "${_tgt_name}" "${_restart_at}";

			fi;

			echo "step ${_pkg_name} ${_tgt_name} ${_step}" >&3;

			"${_dispatch_fn}" exec_step "${_pkg_name}" "${_tgt_name}" "${_step}";

			ex_pkg_state_set "${_pkg_name}" "${_step}" "${1:+-${1}}";

		done;

	fi;

	"${_dispatch_fn}" exec_finish "${_pkg_name}" "${_tgt_name}";

	ex_pkg_state_set "${_pkg_name}" finish;

};

# vim:filetype=sh