#

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

#

pkg_fetch_download_clean_dlcache() {

	local	_dlcachedir="${1}" _pkg_name="${2}" _pkg_fname="${3}" _pkg_urls_git="${4}"\

		_fname="" _skipfl=0 _url_spec="" _url_subdir="";

	for _fname in $(cd "${_dlcachedir}/${_pkg_name}" 2>/dev/null && find	\

			-maxdepth 1						\

			-mindepth 1						\

			${_pkg_fname:+-not -name "${_pkg_fname}"}		\

			${_pkg_fname:+-not -name "${_pkg_fname}.fetched"}); do

		_fname="${_fname#./}"; _skipfl=0;

		for _url_spec in ${_pkg_urls_git}; do

			_url_subdir="${_url_spec%%=*}"; _url_subdir="${_url_subdir##*/}";

			if [ "${_fname%.git}" = "${_url_subdir}" ]; then

				_skipfl=1; break;

			fi;

		done;

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

			_fname="${_dlcachedir}/${_pkg_name}/${_fname}";

			rtl_log_msg "verbose" "Deleting redundant file \`%s' for package \`%s'." "${_fname}" "${_pkg_name}";

			rtl_fileop rm "${_fname}";

		fi;

	done;

};

pkg_fetch_download_dlcache_subdir() {

	if [ -n "${PKG_INHERIT_FROM:-}" ]\

	&& ! [ -e "${BUILD_DLCACHEDIR}/${PKG_NAME}" ]\

	&& ! rtl_fileop ln_symbolic "${PKG_INHERIT_FROM}" "${BUILD_DLCACHEDIR}/${PKG_NAME}"; then

		return 1;

	elif [ -z "${PKG_INHERIT_FROM:-}" ]\

	&& ! [ -e "${BUILD_DLCACHEDIR}/${PKG_NAME}" ]\

	&& ! rtl_fileop mkdir "${BUILD_DLCACHEDIR}/${PKG_NAME}"; then

		return 1;

	else

		return 0;

	fi;

};

pkg_fetch_download() {

	if [ "${ARG_FETCH_FORCE:-}" != "offline" ]; then

		if [ -n "${PKG_URL:-}" ]; then

			if ! pkg_fetch_download_dlcache_subdir; then

				return 1;

			elif ! rtl_fetch_url_wget	\

					"${PKG_URL}" "${PKG_SHA256SUM}" "${BUILD_DLCACHEDIR}/${PKG_NAME}"\

					"${PKG_FNAME}" "${PKG_NAME}" "${PKG_MIRRORS:-}"; then

				return 1;

			fi;

		fi;

		if [ -n "${PKG_URLS_GIT:-}" ]; then

			if ! pkg_fetch_download_dlcache_subdir; then

				return 1;

			elif ! rtl_fetch_urls_git	\

					"${BUILD_DLCACHEDIR}/${PKG_NAME}" "${DEFAULT_GIT_ARGS}" "${PKG_BASE_DIR}"\

					"${PKG_NAME}" "${PKG_MIRRORS_GIT:-}" ${PKG_URLS_GIT}; then

				return 1;

			fi;

		fi;

		pkg_fetch_download_clean_dlcache "${BUILD_DLCACHEDIR}" "${PKG_NAME}" "${PKG_FNAME:-}" "${PKG_URLS_GIT:-}";

	fi;

};

# vim:filetype=sh