#

# set +o errexit -o noglob -o nounset is assumed.

#

#

# ex_pkg_check_depends() - check single named package for unsatisfied dependencies

# @_checkfl:		enable (1) or inhibit (0) dependency expansion

# @_pkg_disabled:	list of disabled packages

# @_pkg_finished:	list of finished packages

# @_pkg_name:		single package name

# @_pkg_names:		list of package names

#

# Return:		zero (0) given no outstanding dependencies, non-zero (>0) otherwise

#

ex_pkg_check_depends() {

	local	_checkfl="${1}" _pkg_disabled="${2}" _pkg_finished="${3}" _pkg_name="${4}" _pkg_names="${5}"\

		_dependfl=0 _pkg_depends="" _pkg_name_depend="";

	if [ "${_checkfl:-0}" -eq 1 ]\

	&& _pkg_depends="$(rtl_uniq $(rtl_lunfold_depends 'PKG_${_name}_DEPENDS' $(rtl_get_var_unsafe -u "PKG_"${_pkg_name}"_DEPENDS")))"; then

		for _pkg_name_depend in $(rtl_uniq ${_pkg_depends}); do

			if ! rtl_lmatch "${_pkg_disabled}" "${_pkg_name_depend}"\

			&& ! rtl_lmatch "${_pkg_finished}" "${_pkg_name_depend}"; then

				if ! rtl_lmatch "${_pkg_names}" "${_pkg_name_depend}"; then

					rtl_log_msg fatalexit "Error: dependency \`%s' of \`%s' unknown." "${_pkg_name_depend}" "${_pkg_name}";

				else

					_dependfl=1; break;

				fi;

			fi;

		done;

	fi;

	return "${_dependfl}";

};

#

# ex_pkg_find_package() - find build group a single named package belongs to

# @_group_names:	build group names

# @_pkg_name:		single named package

#

# Return:		zero (0) on success, non-zero (>0) if package not found, group name on stdout if package was found.

#

ex_pkg_find_package() {

	local _group_names="${1}" _pkg_name="${2}" _foundfl=0 _group_name="" _pkg_names="";

	for _group_name in ${_group_names}; do

		if _pkg_names="$(rtl_get_var_unsafe -u "${_group_name}_PACKAGES")"\

		&& [ -n "${_pkg_names}" ]\

		&& rtl_lmatch "${_pkg_names}" "${_pkg_name}"; then

			_foundfl=1; break;

		fi;

	done;

	case "${_foundfl:-0}" in

	0)	return 1; ;;

	1)	printf "%s" "${_group_name}"; return 0; ;;

	esac;

};

#

# ex_pkg_get_packages() - get list of packages belonging to single named build group

# @_group_name:	build group name

#

# Return:	zero (0) on success, non-zero (>0) on failure, list of package names on stdout on success.

#

ex_pkg_get_packages() {

	local _group_name="${1}" _pkg_names="";

	if _pkg_names="$(rtl_get_var_unsafe -u "${_group_name}_PACKAGES")"\

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

		printf "%s" "${_pkg_names}"; return 0;

	else

		return 1;

	fi;

};

#

# ex_pkg_load_dump() - load package dump

# @_pkg_name:	package name

#

# Return:	zero (0) on success, non-zero (>0) on failure, package dump post-return on success.

#

ex_pkg_load_dump() {

	local _pkg_name="${1}" _workdir="${2}" _rc=0; _status="";

	if [ ! -e "${_workdir}/${_pkg_name}.dump" ]; then

		rtl_log_msg warning "Warning: failed to locate environment dump for package \`%s' in \`%s'." "${_pkg_name}" "${_workdir}";

		rtl_log_msg info "Rebuilding package \`%s' w/ --dump-in _build..." "${_pkg_name}";

		(export	ARCH BUILD_KIND BUILD_DLCACHEDIR BUILD_WORKDIR		\

			PREFIX PREFIX_CROSS PREFIX_MINGW32 PREFIX_MINIPIX	\

			PREFIX_NATIVE PREFIX_ROOT PREFIX_RPM;

		./build.sh --dump-in _build -P -r "${_pkg_name}" -v);

		if [ ! -e "${_workdir}/${_pkg_name}.dump" ]; then

			_rc=1; _status="Error: failed to locate environment dump for package \`${_pkg_name}' in \`${_workdir}'.";

		fi;

	else

		_rc=0;

	fi;

	if [ "${_rc:-0}" -eq 0 ]\

	&& ! . "${_workdir}/${_pkg_name}.dump"; then

		_rc=1; _status="Error: failed to source environment dump for package \`${_pkg_name}' from \`${_workdir}'.";

	elif [ "${_rc:-0}" -eq 0 ]\

	&&   ! rtl_fileop cd "${PKG_BUILD_DIR}"; then

		_rc=1; _status="Error: failed to change working directory to \`${PKG_BUILD_DIR}'.";

	fi; return "${_rc}";

};

#

# ex_pkg_load_vars() - load build variables

#

# Return:	zero (0) on success, non-zero (>0) on failure, build variables post-return on success.

#

ex_pkg_load_vars() {

	local _rc=0 _fname=""; _status="";

	if ! rtl_lmatch "${ARCH}" "nt32 nt64"; then

		_rc=1; _status="Error: invalid architecture \`${ARCH}'.";

	elif ! rtl_lmatch "${BUILD_KIND}" "debug release"; then

		_rc=1; _status="Error: unknown build type \`${BUILD_KIND}'.";

	else	case "${ARCH}" in

		nt32)	DEFAULT_TARGET="i686-nt32-midipix"; ;;

		nt64)	DEFAULT_TARGET="x86_64-nt64-midipix"; ;;

		esac;

		for _fname in	\

				"${HOME}/midipix_build.vars"	\

				"${HOME}/.midipix_build.vars"	\

				../midipix_build.vars		\

				./midipix.env; do

			if [ -r "${_fname}" ]; then

				rtl_log_msg notice "Sourcing \`%s'." "${_fname}";

				rtl_fileop source "${_fname}";

			fi;

		done;

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

			_rc=1; _status="Error: \${PREFIX} empty or unset.";

		fi;

	fi; return "${_rc}";

};

#

# ex_pkg_load_groups() - load all available build groups

#

# Return:	zero (0) on success, non-zero (>0) on failure, build groups loaded and ${EX_PKG_BUILD_GROUPS} set post-return.

#

ex_pkg_load_groups() {

	local  _build_groups="" _fname="" _group="" _groups="";

	for _fname in $(find ./groups -name *.group | sort); do

		rtl_fileop source_opt "${_fname}";

		if [ -n "${GROUP_TARGET:-}" ]; then

			_group="${GROUP_TARGET}"; unset GROUP_TARGET;

		else

			_group="${_fname##*/}"; _group="${_group%.group}"; _group="${_group#*.}";

		fi;

		if ! rtl_lmatch "${_groups}" "${_group}"; then

			_groups="$(rtl_lconcat "${_groups}" "${_group}")";

			if [ -n "${GROUP_AUTO:-}" ]; then

				if [ "${GROUP_AUTO:-0}" -ne 0 ]; then

					_build_groups="$(rtl_lconcat "${_build_groups}" "${_group}")";

				fi;

				unset GROUP_AUTO;

			else

				_build_groups="$(rtl_lconcat "${_build_groups}" "${_group}")";

			fi;

		fi;

	done;

	EX_PKG_BUILD_GROUPS="$(rtl_uniq "${_build_groups}")";

};

#

# ex_pkg_unfold_depends() - unfold list of package names into dependency-expanded set of complete, disabled, finished, and outstanding package names

# @_checkfl:		enable (1) or inhibit (0) dependency expansion

# @_forcefl:		enable (1) or inhibit (0) forcibly rebuilding finished packages

# @_group_name:		build group name

# @_pkg_names:		list of package names

# @_restart:		optional whitespace-separated list of package names to rebuild

# @_test_finished:	only exclude disabled packages from ${EX_PKG_NAMES} (0,) split finished packages into ${EX_PKG_FINISHED}

#

# Return:		zero (0) on success, non-zero (>0) on failure, ${EX_PKG_DISABLED}, ${EX_PKG_FINISHED}, and ${EX_PKG_NAMES} set post-return.

#

ex_pkg_unfold_depends() {

	local	_checkfl="${1}" _forcefl="${2}" _group_name="${3}" _pkg_names="${4}" _restart="${5}" _test_finished="${6}"\

		_pkg_name="" _restartfl=0;

	if [ -n "${_restart}" ] && ! rtl_lmatch "${_restart}" "ALL LAST"; then

		_pkg_names="$(rtl_lsearch "${_pkg_names}" "${_restart}")";

	fi;

	if [ -n "${_restart}" ] && [ "${_checkfl:-0}" -eq 1 ]; then

		_pkg_names="$(rtl_uniq $(rtl_lunfold_depends 'PKG_${_name}_DEPENDS' ${_pkg_names}))";

	fi;

	for _pkg_name in ${_pkg_names}; do

		if [ "${_restart}" = "ALL" ]\

		|| rtl_lmatch "${_restart}" "${_pkg_name}"; then

			_restartfl=1;

		else

			_restartfl=0;

		fi;

		if [ "x$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_DISABLED")" = "x1" ]; then

			EX_PKG_DISABLED="$(rtl_lconcat "${EX_PKG_DISABLED}" "${_pkg_name}")";

			_pkg_names="$(rtl_lfilter "${_pkg_names}" "${_pkg_name}")";

		elif [ "${_test_finished:-1}" -eq 1 ]\

		&&   ex_pkg_state_test "${_pkg_name}" finish\

		&&   [ "${_restartfl:-0}" -eq 0 ]\

		&&   [ "${_forcefl:-0}" -ne 1 ]\

		&&   [ "x$(rtl_get_var_unsafe -u "${_group_name}_FORCE")" != "x1" ]; then

			EX_PKG_FINISHED="$(rtl_lconcat "${EX_PKG_FINISHED}" "${_pkg_name}")";

			_pkg_names="$(rtl_lfilter "${_pkg_names}" "${_pkg_name}")";

		fi;

	done;

	EX_PKG_DISABLED="$(rtl_uniq ${EX_PKG_DISABLED})";

	EX_PKG_FINISHED="$(rtl_uniq ${EX_PKG_FINISHED})";

	EX_PKG_NAMES="$(rtl_uniq ${_pkg_names})";

};

#

# ex_pkg_unfold_rdepends() - unfold list of package names into reverse dependency-expanded set of complete, disabled, finished, and outstanding package names

# @_group_name:		build group name

# @_pkg_names:		list of package names

# @_restart:		optional whitespace-separated list of package names to rebuild

# @_test_finished:	only exclude disabled packages from ${EX_PKG_NAMES} (0,) split finished packages into ${EX_PKG_FINISHED}

#

# Return:		zero (0) on success, non-zero (>0) on failure, ${EX_PKG_DISABLED}, ${EX_PKG_FINISHED}, and ${EX_PKG_NAMES} set post-return.

#

ex_pkg_unfold_rdepends() {

	local	_group_name="${1}" _pkg_names="${2}" _restart="${3}" _test_finished="${4}"\

		_pkg_depends="" _pkg_name="" _pkg_name_depend="" _pkg_rdepends="";

	for _pkg_name_depend in ${_restart}; do

		for _pkg_name in ${_pkg_names}; do

			if [ "${_pkg_name}" != "${_pkg_name_depend}" ]\

			&& [ "x$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_DISABLED")" != "x1" ]\

			&& _pkg_depends="$(rtl_lunfold_depends 'PKG_${_name}_DEPENDS' $(rtl_get_var_unsafe -u "PKG_"${_pkg_name}"_DEPENDS"))"\

			&& [ -n "${_pkg_depends}" ]\

			&& rtl_lmatch "${_pkg_depends}" "${_pkg_name_depend}"; then

				_pkg_rdepends="$(rtl_lconcat "${_pkg_rdepends}" "${_pkg_name}")";

			fi;

		done;

	done;

	_pkg_names="";

	for _pkg_name in ${_pkg_rdepends}; do

		if _pkg_depends="$(rtl_lunfold_depends 'PKG_${_name}_DEPENDS' $(rtl_get_var_unsafe -u "PKG_"${_pkg_name}"_DEPENDS"))"\

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

			for _pkg_name_depend in ${_pkg_depends}; do

				if [ "x$(rtl_get_var_unsafe -u "PKG_${_pkg_name_depend}_DISABLED")" = "x1" ]; then

					EX_PKG_DISABLED="$(rtl_lconcat "${EX_PKG_DISABLED}" "${_pkg_name_depend}")";

				elif [ "${_test_finished:-1}" -eq 1 ]\

				&&   ex_pkg_state_test "${_pkg_name_depend}" finish\

				&&   [ "x$(rtl_get_var_unsafe -u "${_group_name}_FORCE")" != "x1" ]\

				&&   ! rtl_lmatch "${_pkg_rdepends}" "${_pkg_name_depend}"; then

					EX_PKG_FINISHED="$(rtl_lconcat "${EX_PKG_FINISHED}" "${_pkg_name_depend}")";

				elif [ "${_test_finished:-1}" -eq 0 ]\

				||   ! ex_pkg_state_test "${_pkg_name_depend}" finish\

				||   [ "x$(rtl_get_var_unsafe -u "${_group_name}_FORCE")" = "x1" ]; then

					_pkg_names="$(rtl_lconcat "${_pkg_names}" "${_pkg_name_depend}")";

				fi;

			done;

		fi;

		_pkg_names="$(rtl_lconcat "${_pkg_names}" "${_pkg_name}")";

	done;

	EX_PKG_DISABLED="$(rtl_uniq ${EX_PKG_DISABLED})";

	EX_PKG_FINISHED="$(rtl_uniq ${EX_PKG_FINISHED})";

	EX_PKG_NAMES="$(rtl_uniq ${_pkg_names})";

};

#

# ex_pkg_unfold_rdepends_direct() - unfold list of package names into direct reverse dependency-expanded set of disabled and outstanding package names

# @_group_name:		build group name

# @_pkg_names:		list of package names

# @_restart:		optional whitespace-separated list of package names to rebuild

#

# Return:		zero (0) on success, non-zero (>0) on failure, ${EX_PKG_DISABLED} and ${EX_PKG_RDEPENDS_DIRECT} set post-return.

#

ex_pkg_unfold_rdepends_direct() {

	local	_group_name="${1}" _pkg_names="${2}" _restart="${3}"\

		_pkg_depends="" _pkg_disabled="" _pkg_name="" _pkg_name_depend="" _pkg_rdepends="";

	for _pkg_name_depend in ${_restart}; do

		for _pkg_name in ${_pkg_names}; do

			if [ "${_pkg_name}" != "${_pkg_name_depend}" ]\

			&& _pkg_depends="$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_DEPENDS")"\

			&& [ -n "${_pkg_depends}" ]\

			&& rtl_lmatch "${_pkg_depends}" "${_pkg_name_depend}"; then

				if [ "x$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_DISABLED")" != "x1" ]; then

					_pkg_rdepends="$(rtl_lconcat "${_pkg_rdepends}" "${_pkg_name}")";

				else

					_pkg_disabled="$(rtl_lconcat "${_pkg_disabled}" "${_pkg_name}")";

				fi;

			fi;

		done;

	done;

	EX_PKG_DISABLED="$(rtl_uniq ${_pkg_disabled})";

	EX_PKG_RDEPENDS_DIRECT="$(rtl_uniq ${_pkg_rdepends})";

};

# vim:filetype=sh textwidth=0