#

# set -o errexit -o noglob are assumed.

#

exp_pkg_env_source() {

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

		_tgt_name_uc="" _pkg_name_uc="" _pkg_name_inherit_uc=""	\

		_build_type_uc="" _vname_dst="" _vars_set="";

	ex_rtl_fileop source_opt "vars/${_pkg_name}.vars";

	_tgt_name_uc="$(ex_rtl_toupper "${_tgt_name}")";

	_pkg_name_uc="$(ex_rtl_toupper "${_pkg_name}")";

	ex_rtl_set_vars BUILD_TYPE					\

		"DEFAULT ${_tgt_name_uc} PKG_${_pkg_name_uc}"		\

		_vars_set;

	_build_type_uc="$(ex_rtl_toupper "${PKG_BUILD_TYPE}")";

	ex_rtl_set_vars INHERIT_FROM "PKG_${_pkg_name_uc}" _vars_set;

	_pkg_name_inherit_uc="$(ex_rtl_toupper "${PKG_INHERIT_FROM}")";

	for _vname_dst in $(ex_rtl_lfilter_not				\

			"${DEFAULT_BUILD_VARS}" BUILD_TYPE); do

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

			ex_rtl_set_vars "${_vname_dst}"			\

				"DEFAULT DEFAULT_${_build_type_uc}	\

				${_tgt_name_uc}				\

				PKG_${_pkg_name_inherit_uc}		\

				PKG_${_pkg_name_uc}" _vars_set;

		else

			ex_rtl_set_vars "${_vname_dst}"			\

				"DEFAULT DEFAULT_${_build_type_uc}	\

				${_tgt_name_uc} PKG_${_pkg_name_uc}"	\

				_vars_set;

		fi;

	done;

	ex_rtl_unset_vars $(ex_rtl_lfilter_not				\

		"$(set | awk -F= '/^PKG_/{print $1}' | sort)"		\

		"${_vars_set}");

};

ex_pkg_env() {

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

	exp_pkg_env_source "${_pkg_name}" "${_tgt_name}";

	: ${PKG_NAME:="${_pkg_name}"};

	: ${MIDIPIX_BUILD_PWD:="$(pwd)"};

	: ${PKG_BASE_DIR:="${BUILD_WORKDIR}/${_pkg_name}-${PKG_BUILD_TYPE}-${PKG_TARGET}"};

	: ${PKG_FNAME:="${PKG_URL##*/}"};

	: ${PKG_BUILD_STEPS:="$(ex_rtl_lfilter_not "${DEFAULT_BUILD_STEPS}"		\

		"${PKG_BUILD_STEPS_DISABLE}")"};

	if [ -z "${PKG_SUBDIR}" ]; then

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

			PKG_SUBDIR="${PKG_URLS_GIT%%=*}";

		else case "${PKG_FNAME}" in

		*.t*)	PKG_SUBDIR="${PKG_FNAME%%.t*}"; ;;

		*)	PKG_SUBDIR="${_pkg_name}"; ;;

		esac; fi;

	fi;

	if [ -z "${PKG_BUILD_DIR}" ]; then

		case "${PKG_IN_TREE:-0}" in

		0) PKG_BUILD_DIR="obj"; ;;

		1) PKG_BUILD_DIR="${PKG_SUBDIR}"; ;;

		esac;

	fi;

	PKG_BUILD_DIR="${PKG_BASE_DIR}/${PKG_BUILD_DIR}";

	PKG_CONFIGURE="${PKG_BASE_DIR}/${PKG_CONFIGURE:-${PKG_SUBDIR}/configure}";

	PKG_DESTDIR="${PKG_BASE_DIR}/${PKG_DESTDIR:-destdir}";

	ex_rtl_push_IFS :; for _vname in ${PKG_ENV_VARS_EXTRA}; do

		export "${_vname}";

	done; ex_rtl_pop_IFS;

};

ex_pkg_state_set() { ex_rtl_state_set "${BUILD_WORKDIR}" "${@}"; };

ex_pkg_state_test() { ex_rtl_state_test "${BUILD_WORKDIR}" "${@}"; };

# vim:filetype=sh