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#
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# set -o noglob is assumed.
Lucio Andrés Illanes Albornoz (arab, vxp) ec19f0
#
Lucio Andrés Illanes Albornoz (arab, vxp) ec19f0
Lucio Andrés Illanes Albornoz (arab, vxp) ec19f0
exp_rtl_fetch_url_git() {
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	local _tgtdir="${1}" _subdir="${2}" _url="${3}" _branch="${4}"	\
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		_oldpwd="";
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	(set -o errexit -o noglob; trap "rm -f \"${BUILD_DLCACHEDIR}/${_subdir%%[/]}.fetching\"" EXIT;
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	while true; do
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		if flock -E 622 -w 3600 4; then
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			break;
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		elif [ "${?}" -eq 622 ]; then
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			continue;
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		else
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			exit "${?}";
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		fi;
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	done;
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	if [ -e "${BUILD_DLCACHEDIR}/${_subdir}" ]; then
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		(ex_rtl_fileop cd "${BUILD_DLCACHEDIR}/${_subdir}" &&\
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			git pull ${DEFAULT_GIT_ARGS} origin "${_branch:-main}");
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		(ex_rtl_fileop cd "${BUILD_DLCACHEDIR}/${_subdir}" &&\
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			git submodule update);
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	else
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		git clone ${DEFAULT_GIT_ARGS} "${_url}" "${BUILD_DLCACHEDIR}/${_subdir}";
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		if [ -n "${_branch}" ]; then
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			(ex_rtl_fileop cd "${BUILD_DLCACHEDIR}/${_subdir}" &&\
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				git checkout "${_branch}");
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		fi;
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		(ex_rtl_fileop cd "${BUILD_DLCACHEDIR}/${_subdir}" &&\
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			git submodule update --init);
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	fi;
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	_oldpwd="${PWD}"; ex_rtl_fileop cd "${PKG_BASE_DIR}";
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	ex_rtl_fileop rm "${_tgtdir}/${_subdir}";
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	ex_rtl_fileop cp "${BUILD_DLCACHEDIR}/${_subdir}" "${_tgtdir}";
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	ex_rtl_fileop cd "${_oldpwd}";) 4<>"${BUILD_DLCACHEDIR}/${_subdir%%[/]}.fetching";
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	if [ "${?}" -eq 0 ]; then
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		cd "$(pwd)";
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	else
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		return "${?}";
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	fi;
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};
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Lucio Andrés Illanes Albornoz (arab, vxp) ec19f0
ex_rtl_fetch_urls_git() {
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	local _tgtdir="" _url_spec="" _subdir="" _url="" _git_branch="";
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	_tgtdir="${1}"; shift;
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	if [ "${ARG_FETCH_FORCE}" = "offline" ]; then
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		return 0;
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	fi;
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	for _url_spec in "${@}"; do
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		_subdir="${_url_spec%=*}";
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		_url="${_url_spec#*=}";
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		_url="${_url%@*}";
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		if [ "${_url_spec#*@}" != "${_url_spec}" ]; then
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			_git_branch=${_url_spec#*@};
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		fi;
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		exp_rtl_fetch_url_git "${_tgtdir}" "${_subdir}"	\
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			"${_url}" "${_git_branch}";
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	done;
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};
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# N.B.	URLs ($1) may contain `?' or '&' characters.
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ex_rtl_fetch_url_wget() {
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	local _url="${1}" _sha256sum_src="${2}" _target_fname="${3}" _sha256sum_dst="";
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	if [ "${ARG_FETCH_FORCE}" = "offline" ]; then
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		return 0;
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	elif [ -z "${_target_fname}" ]; then
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		_target_fname="$(ex_rtl_basename "${_url}")";
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	fi;
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	_url_dst="${BUILD_DLCACHEDIR}/${_target_fname}";
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	(set -o errexit -o noglob; trap "_rc=\"\${?}\" ;rm -f \"${_url_dst}.fetching\"; exit \"\${_rc}\";" EXIT;
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	while true; do
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		if flock -E 622 -w 3600 4; then
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			break;
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		elif [ "${?}" -eq 622 ]; then
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			continue;
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		else
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			exit "${?}";
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		fi;
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	done;
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	if [ ! -e "${_url_dst}.fetched" ]; then
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		wget ${DEFAULT_WGET_ARGS} -O "${_url_dst}" "${_url}";
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		if [ -n "${_sha256sum_src}" ]; then
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			set -- $(sha256sum "${_url_dst}");
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			if [ "${_sha256sum_dst:=${1}}" != "${_sha256sum_src}" ]; then
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				ex_rtl_log_msg failexit "Error: hash mismatch for URL \`${_url}' (downloaded file: ${_sha256sum_dst}, from build variables: ${_sha256sum_src}.)";
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			fi;
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		fi;
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		ex_rtl_fileop touch "${_url_dst}.fetched";
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	fi;) 4<>"${_url_dst}.fetching";
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};
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Lucio Andrés Illanes Albornoz (arab, vxp) ec19f0
# vim:filetype=sh