#
# . ./build.vars and set -o errexit -o noglob are assumed.
# See warning at the top of build.vars.
#

is_build_script_done() {
	if [ "${1}" = "clean" ]; then
		if match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}	\
		&& [ -n "${ARG_RESTART_AT}" ]				\
		&& match_list "${ARG_RESTART_AT}" , "${1}"; then
			return 1;		# Build
		else
			return 0;		# Skip
		fi;
	elif [ "${ARG_RESTART}" = "ALL" ]; then
		return 1;			# Build
	elif match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}; then
		if [ -n "${ARG_RESTART_AT}" ]; then
			if [ "${ARG_RESTART_AT}" = "ALL" ]; then
				return 1;	# Build
			elif match_list "${ARG_RESTART_AT}" , "${1}"; then
				return 1;	# Build
			else
				return 0;	# Skip
			fi;
		else
			return 1;		# Build
		fi;
	elif [ -f ${WORKDIR}/.${2:-${BUILD_PACKAGE_LC}}.${1} ]; then
		return 0;		# Skip
	else
		return 1;		# Build
	fi;
};

log_env_vars() {
	log_msg info "Variables for this ${1:-build}:"; shift;
	while [ ${_lev_nvar:=0} -lt ${#} ]; do
		_lev_arg="$(eval echo \${${_lev_nvar}})";
		_lev_arg="${_lev_arg%%=*}";
		if [ ${#_lev_arg} -gt ${_lev_arg_len_max:=0} ]; then
			_lev_arg_len_max=${#_lev_arg};
		fi; : $((_lev_nvar+=1));
	done; unset _lev_nvar _lev_arg;
	while [ ${#} -gt 0 ]; do
		log_msg info "$(printf					\
			"%${_lev_arg_len_max}.${_lev_arg_len_max}s=%s"	\
			"${1%%=*}" "$(get_var_unsafe ${1#*=})")";
		shift;
	done; unset _lev_arg_len_max;
};

parse_with_pkg_name() {
	PKG_NAME=${1}; shift;
	_pwpn_pkg_name_uc=$(echo ${PKG_NAME} | tr a-z A-Z);
	if [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URL)" ]\
	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URLS_GIT)" ]\
	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_VERSION)" ]; then
		unset _pwpn_pkg_name_uc;
		log_msg failexit "Error: package \`${PKG_NAME}' missing in build.vars.";
	else
		for _pwpn_vname in ${PKG_BUILD_VARS}; do
			if [ -n "$(get_var_unsafe DEFAULT_${_pwpn_vname})" ]; then
				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe DEFAULT_${_pwpn_vname})";
			fi;
			if [ -n "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})" ]; then
				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})";
			fi;
			if [ "${BUILD}" = "debug" ]	\
			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)" ]; then
				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)";
			elif [ "${BUILD}" = "release" ]	\
			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)" ]; then
				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)";
			elif [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})" ]; then
				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})";
			fi;
		done; unset _pwpn_vname;
	fi;
	[ -z "${PKG_FNAME}" ] && PKG_FNAME=${PKG_URL##*/};
	[ -z "${PKG_SUBDIR}" ] && PKG_SUBDIR=${PKG_FNAME%%.tar*};
	[ -n "${PKG_ENV_VARS_EXTRA}" ] && set_env_vars_with_sep : "${PKG_ENV_VARS_EXTRA}";
	for _pwpn_env_var in $(set); do
		if [ "${_pwpn_env_var#PKG_${_pwpn_pkg_name_uc}}" != "${_pwpn_env_var}" ]; then
			_pwpn_env_vars="${_pwpn_env_vars:+${_pwpn_env_vars} }${_pwpn_env_var%%=*}";
		fi;
	done;
	if [ -n "${_pwpn_env_vars}" ]; then
		log_env_vars "build" ${_pwpn_env_vars};
	fi; unset _pwpn_pkg_name_uc _pwpn_env_var _pwpn_env_vars;
};

run_cmd_unsplit() {
	_rcu_cmd=${1}; shift;
	while [ ${#} -gt 0 ]; do
		[ -n "${1}" ] &&\
			_rcu_cmdline="${_rcu_cmdline:+${_rcu_cmdline}:}${1}";
		shift;
	done;
	push_IFS :; ${_rcu_cmd} ${_rcu_cmdline}; _rcu_rc=$?; pop_IFS;
	unset _rcu_cmd _rcu_cmdline; return ${_rcu_rc};
};

set_build_script_done() {
	_sbsd_script_fname=${BUILD_PACKAGE_LC};
	_sbsd_done_fname=${WORKDIR}/.${_sbsd_script_fname};
	while [ $# -ge 1 ]; do
		if [ "${1#-}" != "${1}" ]; then
			secure_rm ${_sbsd_done_fname}.${1#-};
		else
			touch ${_sbsd_done_fname}.${1};
			log_msg info "Finished build step ${1} of \`${_sbsd_script_fname}'.";
		fi; shift;
	done; unset _sbsd_script_fname _sbsd_done_fname;
};

set_env_vars_with_sep() {
	_sevws_sep=${1}; shift; push_IFS ${_sevws_sep}; set -- ${1};
	while [ ${#} -gt 0 ]; do
		export "${1}"; shift;
	done; unset _sevws_sep; pop_IFS;
};

# vim:filetype=sh