#

# Copyright (c) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 LucĂ­a Andrea Illanes Albornoz <lucia@luciaillanes.de>

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

#

# Package variable and environment variable preparation

# Package build (step) state setting and testing

#

#

# exp_pkg_env_defaults() - set package variable defaults for single named package

# @_build_steps_default:	list of default build steps

# @_pkg_name:			single package name

# @_workdir:			pathname to build-specific temporary directory

#

# Returns:			zero (0) on success, non-zero (>0) on failure

#

exp_pkg_env_defaults() {

	local _epped_build_steps_default="${1}" _epped_pkg_name="${2}" _epped_workdir="${3}";

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

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

	: ${PKG_BASE_DIR:="${_epped_workdir}/${_epped_pkg_name}-${PKG_BUILD_TYPE}-${PKG_TARGET}"};

	if [ "${PKG_BUILD_STEPS_DISABLE:+1}" = 1 ]; then

		rtl_lfilter2 \$_epped_build_steps_default \$PKG_BUILD_STEPS "${PKG_BUILD_STEPS_DISABLE:-}";

	else

		: ${PKG_BUILD_STEPS:="${_epped_build_steps_default}"};

	fi;

	if [ "${PKG_URL:+1}" = 1 ]; then

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

	fi;

	if [ "${PKG_SUBDIR:+1}" != 1 ]; then

		if [ "${PKG_URLS_GIT:+1}" = 1 ]\

		&& [ "${PKG_FNAME:+1}" = 1 ]; then

			rtl_log_msgV "fatalexit" "${MSG_pkg_fail_missing_vars}";

		elif [ "${PKG_URLS_GIT:+1}" = 1 ]; then

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

		else case "${PKG_FNAME:-}" in

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

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

		esac; fi;

	fi;

	if [ "${PKG_BUILD_DIR:+1}" != 1 ]; 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}";

	PKG_DESTDIR_HOST="${PKG_BASE_DIR}/${PKG_DESTDIR_HOST:-destdir_host}";

	return 0;

};

#

# exp_pkg_env_set() - set package variables for single named package

# @_build_vars_default:	list of default build variables

# @_group_name:		build group name

# @_pkg_name:		single package name

#

# Sets package variables from either defaults, defaults specific to build type,

# build group, package to inherit from if any, or package for a single named

# package, and exports variables optionally named in ${PKG_ENV_VARS_EXTRA}.

#

# Returns:		zero (0) on success, non-zero (>0) on failure

#

exp_pkg_env_set() {

	local	_eppes_build_vars_default="${1}" _eppes_group_name="${2}" _eppes_pkg_name="${3}"	\

		_eppes_lvars="" _eppes_var_prefixes="" _eppes_vars_set=""				\

		_eppes_vars_unset="" _eppes_vname="" _eppes_vnames="" IFS IFS0;

	rtl_set_var _eppes_vars_set BUILD_TYPE "DEFAULT ${_eppes_group_name} PKG_${_eppes_pkg_name}";

	rtl_set_var _eppes_vars_set INHERIT_FROM "PKG_${_eppes_pkg_name}";

	_eppes_var_prefixes="DEFAULT DEFAULT_${PKG_BUILD_TYPE} ${_eppes_group_name}";

	rtl_toupper \$_eppes_var_prefixes;

	rtl_lfilter2 \$_eppes_build_vars_default \$_eppes_vnames BUILD_TYPE;

	for _eppes_vname in ${_eppes_vnames}; do

		if [ "${PKG_INHERIT_FROM:+1}" = 1 ]; then

			_eppes_lvars="PKG_${PKG_INHERIT_FROM} PKG_${PKG_INHERIT_FROM}_${BUILD_KIND} PKG_${_eppes_pkg_name} PKG_${_eppes_pkg_name}_${BUILD_KIND}";

			rtl_toupper \$_eppes_lvars;

			rtl_lconcat2 \$_eppes_lvars \$_eppes_var_prefixes "${_eppes_lvars}";

			rtl_set_var _eppes_vars_set "${_eppes_vname}" "${_eppes_lvars}";

		else

			_eppes_lvars="PKG_${_eppes_pkg_name} PKG_${_eppes_pkg_name}_${BUILD_KIND}";

			rtl_toupper \$_eppes_lvars;

			rtl_lconcat2 \$_eppes_lvars \$_eppes_var_prefixes "${_eppes_lvars}";

			rtl_set_var _eppes_vars_set "${_eppes_vname}" "${_eppes_lvars}";

		fi;

	done;

	IFS0="${IFS:- }"; IFS=":"; for _eppes_vname in ${PKG_ENV_VARS_EXTRA:-}; do

		export "${_eppes_vname}";

	done; IFS="${IFS0}";

	return 0;

};

#

# ex_pkg_env() - set package variables for single named package

# @_build_steps_default:	list of default build steps

# @_build_vars_default:		list of default build variables

# @_group_name:			build group name

# @_pkg_name:			single package name

# @_restart_at:			optional comma-separated list of build steps at which to rebuild or ALL or LAST

# @_workdir:			pathname to build-specific temporary directory

#

# Returns:			zero (0) on success, non-zero (>0) on failure

#

ex_pkg_env() {

	local	_epe_build_steps_default="${1}" _epe_build_vars_default="${2}"		\

		_epe_group_name="${3}" _epe_pkg_name="${4}" _epe_restart_at="${5}"	\

		_epe_workdir="${6}"							\

		_epe_file_idx=0 _epe_inherit_from="" _epe_pkg_version=""		\

		_epe_vars_file="" _epe_vars_file_parent="" _epe_vname="";

	if rtl_get_var_unsafe \$_epe_inherit_from -u "PKG_${_epe_pkg_name}_INHERIT_FROM"\

	&& [ "${_epe_inherit_from:+1}" = 1 ]; then

		rtl_get_var_unsafe \$_epe_vars_file_parent -u "PKG_${_epe_inherit_from}_VARS_FILE";

		rtl_get_var_unsafe \$_epe_vars_file -u "PKG_${_epe_pkg_name}_VARS_FILE";

		if [ "${_epe_vars_file:+1}" != 1 ]; then

			_epe_vars_file="${_epe_vars_file_parent}";

		fi;

	else

		rtl_get_var_unsafe \$_epe_vars_file -u "PKG_${_epe_pkg_name}_VARS_FILE";

	fi;

	if [ "${_epe_vars_file:+1}" != 1 ]; then

		rtl_get_var_unsafe \$_epe_pkg_version -u "PKG_${_epe_pkg_name}_VERSION";

		_epe_file_idx=1;

		while ex_pkg_get_default			\

			\$_epe_vars_file "${_epe_file_idx}"	\

		       	"${_epe_pkg_name}"			\

			"${_epe_pkg_version}"			\

			"vars_files"				\

		   && [ "${_epe_vars_file:+1}" = 1 ];

		do

			: $((_epe_file_idx += 1));

			rtl_fileop source_opt "${_epe_vars_file}";

		done;

	else

		rtl_fileop source_opt		\

			"${_epe_vars_file}";

	fi;

	if ! exp_pkg_env_set "${_epe_build_vars_default}" "${_epe_group_name}" "${_epe_pkg_name}"\

	|| ! exp_pkg_env_defaults "${_epe_build_steps_default}" "${_epe_pkg_name}" "${_epe_workdir}"; then

		return 1;

	fi;

	return 0;

};

#

# ex_pkg_state_set() - update build step status for single named package

# @_pkg_name:		single package name

# @_build_step:		build step set status of

# @...:			optional list of build steps to invalidate status of

#

# Returns:		zero (0) on success, non-zero (>0) on failure

#

ex_pkg_state_set() {

	rtl_state_set "${BUILD_WORKDIR}" "${@}";

};

ex_pkg_state_set2() {

	local _epss2_workdir="${1}"; shift;

	rtl_state_set "${_epss2_workdir}" "${@}";

};

#

# ex_pkg_state_test() - test build step status of single named package

# @_pkg_name:		single package name

# @_build_step:		build step to test status of

# @_restart_at:		optional comma-separated list of build steps at which to rebuild or ALL or LAST

#

# Returns:		zero (0) on success, non-zero (>0) on failure

#

ex_pkg_state_test() {

	rtl_state_test "${BUILD_WORKDIR}" "${@}";

};

ex_pkg_state_test2() {

	local _epst2_workdir="${1}"; shift;

	rtl_state_test "${_epst2_workdir}" "${@}";

};

# vim:filetype=sh textwidth=0