#

# 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.

#

#

#

# ex_rtl_build_rpm() - build RPM package

# @_destdir:		package destination directory

# @_jobs_max:		maximum count of simultaneously executing rpmbuild(1) processes

# @_jobs_semaphore:	pathname to current count of simultaneously executing rpmbuild(1) processes semaphore file

# @_jobs_wait:		wait period in seconds when @_jobs_semaphore is locked

# @_name:		package name

# @_rpms_dname:		RPMs directory pathname

# @_spec_fname:		RPM .spec file pathname

# @_spec_fname_tgt:	target package RPM .spec file pathname

# @_tmp_dname:		temporary files directory pathname

# @_topdir:		package top directory

# @_url:		package URL

# @_version:		package version

# @_version_rpm:	package RPM version

#

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

# N.B.:			The following variables are substituted prior to running rpmbuild(1):

#			%{pkg_destdir}

#			%{pkg_name}

#			%{pkg_url}

#			%{pkg_version_full}

#			%{pkg_version_rpm}

#

#			The \n-separated list of package files is inserted after the `%files' line.

#

ex_rtl_build_rpm() {

	local	_erbr_destdir="${1}" _erbr_jobs_max="${2}" _erbr_jobs_semaphore="${3}" _erbr_jobs_wait="${4}"	\

		_erbr_name="${5}" _erbr_rpms_dname="${6}" _erbr_spec_fname="${7}" _erbr_spec_fname_tgt="${8}"	\

		_erbr_tmp_dname="${9}" _erbr_topdir="${10}" _erbr_url="${11}" _erbr_version="${12}"		\

		_erbr_version_rpm="${13}"									\

		_erbr_spec_fname_tgt_tmp="" _erbr_job_count=0 _erbr_rc=0 _erbr_rc_jobs=0;

(

	while true; do

		(set +o errexit -o noglob -o nounset;

		rtl_flock_acquire 4 || exit $((${?} + 1));

		read _erbr_job_count <&4;

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

			_erbr_job_count=0;

		fi;

		if [ "${_erbr_job_count}" -ge "${_erbr_jobs_max}" ]; then

			exit 1;

		else

			: $((_erbr_job_count += 1));

			printf "%s" "${_erbr_job_count}" >"${_erbr_jobs_semaphore}" || exit $((${?} + 1));

			exit 0;

		fi) 4<>"${_erbr_jobs_semaphore}";

		_erbr_rc_jobs="${?}";

		case "${_erbr_rc_jobs}" in

		0)	break; ;;

		1)	sleep "${_erbr_jobs_wait}" || return "${?}"; ;;

		*)	return $((${_erbr_rc_jobs} - 1));

		esac;

	done;

	trap '

		(set +o errexit -o noglob -o nounset;

		rtl_flock_acquire 4 || exit 1;

		read _erbr_job_count <&4;

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

		|| [ "${_erbr_job_count}" -lt 1 ]; then

			_erbr_job_count=1;

		fi;

		: $((_erbr_job_count -= 1));

		printf "%s" "${_erbr_job_count}" >"${_erbr_jobs_semaphore}" || exit 1;

		exit 0) 4<>"${_erbr_jobs_semaphore}"'	\

		EXIT HUP INT TERM USR1 USR2;

	(

	_erbr_spec_fname_tgt_tmp="${_erbr_spec_fname_tgt}.tmp";

	trap "rm -f \"${_erbr_spec_fname_tgt_tmp}\"" EXIT HUP INT TERM USR1 USR2;

	#

	# N.B.	Keep list in sync w/ list in function documentation comment block at top.

	#

	if rtl_fileop cp "${_erbr_spec_fname}" "${_erbr_spec_fname_tgt_tmp}"	\

	&& sed	-i""								\

			-ne '/^#REMOVEDBYSED#/!p'				\

			"${_erbr_spec_fname_tgt_tmp}"				\

	&& sed	-i""								\

			-e 's#%{pkg_destdir}#'"${_erbr_destdir}"'#g'		\

			-e 's#%{pkg_name}#'"${_erbr_name}"'#g'			\

			-e 's#%{pkg_url}#'"${_erbr_url}"'#g'			\

			-e 's#%{pkg_version_full}#'"${_erbr_version}"'#g'	\

			-e 's#%{pkg_version_rpm}#'"${_erbr_version_rpm}"'#g'	\

			"${_erbr_spec_fname_tgt_tmp}"				\

	&& sed	-n -e '1,/^%files$/p'						\

			"${_erbr_spec_fname_tgt_tmp}"				\

			> "${_erbr_spec_fname_tgt}"				\

	&& (cd "${_erbr_destdir}";						\

	    find -mindepth 1 \( -type f -or -type l \) |			\

	    sed	-e 's,^./,'"/"','						\

	    	-e 's/^/"/'							\

		-e 's/$/"/')							\

	    		>> "${_erbr_spec_fname_tgt}"				\

	&& sed	-n -e '/^%files$/,${/^%files$/d;p}'				\

			"${_erbr_spec_fname_tgt_tmp}"				\

			>> "${_erbr_spec_fname_tgt}"				\

		;								\

	then

		_erbr_rc=0;

	else

		_erbr_rc=1;

	fi;

	exit "${_erbr_rc}";

	); _erbr_rc="${?}";

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

		while true; do

			rpmbuild						\

				-bb						\

				--define "_binary_payload w2T16.xzdio"		\

				--define="_tmppath ${_erbr_tmp_dname=}"		\

				--define="_topdir ${_erbr_topdir}"		\

				--nodeps					\

				"${_erbr_spec_fname_tgt}";

			_erbr_rc="${?}";

			if [ "${_erbr_rc}" -eq 141 ]; then

				_erbr_rc=0; continue;

			else

				break;

			fi;

		done;

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

			if ! find "${_erbr_rpms_dname}/${_erbr_name}-${_erbr_version_rpm}/RPMS"		\

				-iname \*.rpm -exec cp -pP {} "${_erbr_rpms_dname}/" \;			\

			|| ! rtl_fileop rm "${_erbr_rpms_dname}/${_erbr_name}-${_erbr_version_rpm}"	\

			|| ! rtl_fileop cp "${_erbr_spec_fname_tgt}" "${_erbr_rpms_dname}/";

			then

				_erbr_rc=1;

			fi;

		fi;

	fi;

	exit "${_erbr_rc}";

);

	_erbr_rc="${?}";

	return "${_erbr_rc}";

};

#

# ex_rtl_expand_rpm_version() - expand RPM version strings

# @_rurl:		out reference to package URL

# @_rversion:		out reference to package version

# @_rversion_rpm:	out reference to RPM version string

# @_subdir:		package subdirectory

# @_url:		package URL

# @_url_censor:		package URL filter

# @_urls_git:		package Git URL(s)

# @_version:		package version

#

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

#

ex_rtl_expand_rpm_version() {

	local	_ererv_rurl="${1#\$}" _ererv_rversion="${2#\$}" _ererv_rversion_rpm="${3#\$}"	\

		_ererv_subdir="${4}" _ererv_url="${5}" _ererv_url_censor="${6}"			\

		_ererv_urls_git="${7}" _ererv_version="${8}"					\

		_ererv_version_full="" _ererv_version_rpm=""

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

		_ererv_url="${_ererv_url%% *}";

		_ererv_version_full="${_ererv_version}";

		_ererv_version_rpm="${_ererv_version%%-*}";

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

		_ererv_url="${_ererv_urls_git%% *}";

		_ererv_url="${_ererv_url##*=}";

		_ererv_url="${_ererv_url%%@*}";

		_ererv_version_rpm="$(cd "${_ererv_subdir}" && git rev-parse HEAD)" || return 1;

		_ererv_version_full="${_ererv_version_rpm} ($(cd "${_ererv_subdir}" && git rev-parse --abbrev-ref HEAD))" || return 1;

	fi;

	if [ "${_ererv_url#${_ererv_url_censor}}" != "${_ererv_url}" ]; then

		_ererv_url="Unknown";

	fi;

	eval ${_ererv_rurl}='${_ererv_url}';

	eval ${_ererv_rversion}='${_ererv_version_full}';

	eval ${_ererv_rversion_rpm}='${_ererv_version_rpm}';

	return 0;

};

#

# ex_rtl_fixup_pkgconfig_paths() - fixup pathname prefixes in pkg-config(1) files

# @_dname_base:		base directory pathname

#

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

#

ex_rtl_fixup_pkgconfig_paths() {

	local	_erfpp_dname_base="${1}"	\

		_erfpp_pc_path="";

	for _erfpp_pc_path in $(find "${_erfpp_dname_base=}" -name \*.pc); do

		if [ -n "$(sed -ne '/^libdir=[^$]*$/p' "${_erfpp_pc_path}")" ]			\

		&& ! sed -i""	-e '/^libdir=[^$]*$/s/^libdir=\(.*\)$/libdir=${exec_prefix}\1/'	\

				-e '/^exec_prefix=$/s/^.*$/exec_prefix=${prefix}/'		\

				"${_erfpp_pc_path}";

		then

			return 1;

		fi;

		if [ -n "$(sed -ne '/^includedir=[^$]*$/p' "${_erfpp_pc_path}")" ]			\

		&& ! sed -i""	-e '/^includedir=[^$]*$/s/^includedir=\(.*\)$/includedir=${prefix}\1/'	\

				"${_erfpp_pc_path}";

		then

			return 1;

		fi;

	done;

	return 0;

};

#

# ex_rtl_strip_files() - strip files of debugging information

# @_strip_cmd:		strip(1) command name

# @_tree_root:		pathname to tree root

# @--:			(ignored)

# @_log_fn:		logging function name; called with @... and pathname of each file stripped

# @...:			@_fn initial arguments list as positional parameters

#

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

#

ex_rtl_strip_files() {

	local	_ersf_strip_cmd="${1}" _ersf_tree_root="${2}"	\

		_ersf_ignored="${3}" _ersf_log_fn="${4}"	\

		_ersf_bin_path="";

	shift 4;

	if [ -e "${_ersf_tree_root}" ]; then

		for _ersf_bin_path in $(find		\

				"${_ersf_tree_root}"	\

				-perm /a=x		\

				-type f);

		do

			if objdump				\

					-sj .debug_frame	\

					-j .debug_info		\

					"${_ersf_bin_path}"	\

					>/dev/null 2>&1;

			then

				if ! "${_ersf_strip_cmd}" "${_ersf_bin_path}"; then

					return 1;

				else

					"${_ersf_log_fn}" "${@}" "${_ersf_bin_path}";

				fi;

			fi;

		done;

	fi;

	return 0;

};

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