#

# set +o errexit -o noglob is assumed.

#

pkgtoolp_init_defaults() {

	: ${ARCH:="nt64"}; : ${BUILD:="debug"}; : ${PKG_NAME:=""};

	: ${BUILD_WORKDIR:=""}; : ${PREFIX=""};

	ARG_INFO=0; ARG_RESTART_AT=""; ARG_RDEPENDS=0;

	ARG_UPDATE_DIFF=0; ARG_SHELL=0; ARG_TARBALL=0;

	BUILD_GROUPS="";

};

pkgtoolp_init_dump() {

	local _rc=0; _status="";

	if [ -n "${ARG_RESTART_AT}" ]\

	|| [ "${ARG_UPDATE_DIFF:-0}" -eq 1 ]\

	|| [ "${ARG_SHELL:-0}" -eq 1 ]; then

		if [ ! -e "${BUILD_WORKDIR}/${PKG_NAME}.dump" ]; then

			rtl_log_msg warn "Warning: failed to locate environment dump for package \`${PKG_NAME}' in \`${BUILD_WORKDIR}'.";

			rtl_log_msg info "Rebuilding package \`${PKG_NAME}' w/ --dump-in build...";

			(export	ARCH BUILD						\

				BUILD_DLCACHEDIR BUILD_WORKDIR				\

				PREFIX PREFIX_CROSS PREFIX_MINGW32 PREFIX_MINIPIX	\

				PREFIX_NATIVE PREFIX_ROOT PREFIX_RPM;

			./build.sh -a "${ARCH}" -b "${BUILD}" --dump-in build -P -r "${PKG_NAME}" -v);

			if [ ! -e "${BUILD_WORKDIR}/${PKG_NAME}.dump" ]; then

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

			fi;

		else

			_rc=0;

		fi;

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

		&& ! . "${BUILD_WORKDIR}/${PKG_NAME}.dump"; then

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

	fi; return "${_rc}";

};

pkgtoolp_init_env() {

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

	if ! umask 022; then

		printf "Error: failed to setup environment.\n"; exit 1;

	else	for _fname in $(find subr -name *.subr); do

			if ! . "${_fname}"; then

				printf "Error: failed to source \`%s'.\n" "${_fname}"; exit 1;

			fi;

		done; fi;

	return "${_rc}";

};

pkgtoolp_init_getopts() {

	local _opt="" _shiftfl=0 _rc=0 OPTIND=0; _status="";

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

		case "${1}" in

		--update-diff)

			ARG_UPDATE_DIFF=1; _shiftfl=1; ;;

		--restart-at)

			if [ "${#}" -lt 2 ]\

			|| [ -z "${2}" ]; then

				_rc=1; _status="Error: missing argument for option --restart-at.";

			else

				ARG_RESTART_AT="${2}"; _shiftfl=2;

			fi; ;;

		*)	_shiftfl=0; ;;

		esac;

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

			break;

		elif [ "${_shiftfl:-0}" -gt 0 ]; then

			shift "${_shiftfl}"; continue;

		elif getopts a:b:hirst _opt; then

			case "${_opt}" in

			a)	ARCH="${OPTARG}"; ;;

			b)	BUILD="${OPTARG}"; ;;

			h)	cat etc/pkgtool.usage; exit 0; ;;

			i)	ARG_INFO=1; ;;

			r)	ARG_RDEPENDS=1; ;;

			s)	ARG_SHELL=1; ;;

			t)	ARG_TARBALL=1; ;;

			*)	cat etc/pkgtool.usage; exit 1; ;;

			esac; shift $((${OPTIND}-1)); OPTIND=1;

		else

			break;

		fi;

	done;

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

		if [ "$((${ARG_INFO:-0} + ${ARG_RDEPENDS:-0} + ${ARG_SHELL:-0} + ${ARG_TARBALL:-0}))" -gt 1 ]; then

			cat etc/pkgtool.usage; rtl_log_msg failexit "Error: only one of -i, -r, -s, or -t must be specified.";

		elif [ "$((${ARG_INFO:-0} + ${ARG_RDEPENDS:-0} + ${ARG_SHELL:-0} + ${ARG_TARBALL:-0}))" -eq 0 ]; then

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

			&& [ "${ARG_UPDATE_DIFF:-0}" -eq 0 ]; then

				cat etc/pkgtool.usage; rtl_log_msg failexit "Error: one of -i, -r, -s, or -t must be specified.";

			fi;

		fi;

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

		case "${1}" in

		*=*)	rtl_set_var_unsafe "${1%%=*}" "${1#*=}"; ;;

		*)	if [ "${#}" -ne 1 ]; then

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

			fi; break; ;;

		esac; shift; done;

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

			if [ "${#}" -ne 1 ]\

			&& [ -z "${PKG_NAME}" ]; then

				_rc=1; _status="Error: missing package name.";

			elif [ "${#}" -eq 1 ]; then

				PKG_NAME="${1}";

			fi;

		fi;

	fi;

	return "${_rc}";

};

pkgtoolp_init_groups() {

	local _default_build_groups="" _fname="" _group="" _groups="" _rc=0; _status="";

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

	|| [ "${ARG_RDEPENDS:-0}" -eq 1 ]\

	|| [ "${ARG_TARBALL:-0}" -eq 1 ]; then

		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

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

					fi;

					unset GROUP_AUTO;

				else

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

				fi;

			fi;

		done;

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

		BUILD_GROUPS="${_default_build_groups}";

	fi; return "${_rc}";

};

pkgtoolp_init_package() {

	local _foundfl=0 _group_name="" _pkg_names="" _rc=0; _status="";

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

	|| [ "${ARG_RDEPENDS:-0}" -eq 1 ]\

	|| [ "${ARG_TARBALL:-0}" -eq 1 ]; then

		for _group_name in ${BUILD_GROUPS}; do

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

			|| [ -z "${_pkg_names}" ]; then

				rtl_log_msg warn "Warning: ignoring non-existent or invalid build group \`${_build_group}'.";

			elif rtl_lmatch "${_pkg_names}" "${PKG_NAME}"; then

				_foundfl=1;

			fi;

		done;

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

			_rc=1; _status="Error: package \`${PKG_NAME}' unknown.";

		fi;

	fi; return "${_rc}";

};

pkgtoolp_init_prereqs() {

	local _cmd="" _cmds_missing="" _rc=0; _status="";

	for _cmd in	\

			awk bunzip2 bzip2 cat chmod cmake cp date find flock	\

			g++ gcc git grep gunzip gzip hostname install kill	\

			ln lzip make mkdir mkfifo mktemp mv paste patch perl	\

			pgrep pkill printf readlink rm sed sha256sum sort	\

			tail tar test touch tr uniq wget xz zip; do

		if ! which "${_cmd}" >/dev/null 2>&1; then

			_cmds_missing="${_cmds_missing:+${_cmds_missing} }${_cmd}";

		fi;

	done;

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

		_rc=1; _status="Error: missing prerequisite package(s): ${_cmds_missing}";

	elif ! (FNAME="$(mktemp)" && { trap "rm -f \"\${FNAME}\"" EXIT;		\

			sed -i'' -e '' "${FNAME}" >/dev/null 2>&1; }); then

		_rc=1; _status="Error: sed(1) in \${PATH} does not support the \`-i' option.";

	fi;

	return "${_rc}";

};

pkgtoolp_init_vars() {

	local _rc=0; _status="";

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

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

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

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

	else	case "${ARCH}" in

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

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

		esac;

		rtl_fileop source_opt							\

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

			../midipix_build.vars ./midipix.env;

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

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

		fi; fi;

	return "${_rc}";

};

pkgtool_init() {

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

	if ! pkgtoolp_init_env			\

	|| ! pkgtoolp_init_defaults		\

	|| ! pkgtoolp_init_getopts "${@}"	\

	|| ! pkgtoolp_init_prereqs		\

	|| ! pkgtoolp_init_vars			\

	|| ! pkgtoolp_init_dump			\

	|| ! pkgtoolp_init_groups		\

	|| ! pkgtoolp_init_package; then

		_rc="${?}"; rtl_log_msg fail "${_status}"; exit "${_rc}";

	elif [ -n "${_status}" ]; then

		rtl_log_msg info "${_status}"; exit 0;

	else

		return "${_rc}";

	fi;

};

# vim:filetype=sh