Blame subr/pkg_fetch.subr

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#
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# set -o errexit -o noglob are assumed.
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#
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# N.B.	URLs ($1) may contain `?' or '&' characters.
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pkgp_fetch() {
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	local _url="${1}" _sha256sum_src="${2}";
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	if [ -z "${3}" ]; then
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		_url_dst="${DLCACHEDIR}/$(basename "${_url}")";
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	else
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		_url_dst="${DLCACHEDIR}/${3}";
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	fi;
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	if [ ${ARG_OFFLINE:-0} -eq 1 ]\
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	|| [ -e ${_url_dst}.fetched ]; then
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		return 0;
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	else
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		wget ${WGET_ARGS} -c -O ${_url_dst} "${_url}";
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	fi;
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	if [ -n "${_sha256sum_src}" ]; then
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		set -- $(openssl dgst -sha256 ${_url_dst}); shift $((${#}-1));
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		if [ "${_sha256sum_dst:=${1}}" != "${_sha256sum_src}" ]; then
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			if [ ${ARG_IGNORE_SHA256SUMS:-0} -eq 0 ]; then
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				log_msg failexit "Error: hash mismatch for URL \`${_url}' (is: ${_sha256sum_dst}, should be: ${_sha256sum_src}.)";
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			else
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				log_msg warn "Warning: hash mismatch for URL \`${_url}' (is: ${_sha256sum_dst}, should be: ${_sha256sum_src}.)";
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			fi;
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		fi;
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	fi;
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	touch ${_url_dst}.fetched;
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};
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pkgp_fetch_git() {
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	local _subdir="${1}" _url="${2}" _branch="${3}";
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	if [ ${ARG_OFFLINE:-0} -eq 0 ]; then
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		if [ -e "${DLCACHEDIR}/${_subdir}" ]; then
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			build_fileop cd ${DLCACHEDIR}/${_subdir} &&\
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				git pull origin ${_branch:-main} &&\
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					build_fileop cd ${OLDPWD};
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		else
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			git clone ${_url} ${DLCACHEDIR}/${_subdir};
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			if [ -n "${_branch}" -a		\
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			     \( -z "${_branch#main}" \) -a	\
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			     \( -z "${_branch#master}" \) ]; then
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				build_fileop cd ${DLCACHEDIR}/${_subdir}	&&\
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					git checkout -b ${_branch}		&&\	
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						build_fileop cd ${OLDPWD};
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			fi;
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		fi;
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	fi;
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	build_fileop rm ${_subdir};
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	build_fileop cp ${DLCACHEDIR}/${_subdir} .;
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};
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pkgp_fetch_urls_git() {
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	local _url_spec _subdir _url _git_branch;
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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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		pkgp_fetch_git ${_subdir} ${_url} ${_git_branch};
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	done;
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};
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pkg_fetch() {
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	if [ -n "${1}" ]; then
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		if [ "${1}" = "-git" ]; then
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			shift; pkgp_fetch_urls_git ${1};
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		else
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			pkgp_fetch ${1} ${2};
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		fi;
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	else
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		if [ -n "${PKG_URL}" ]; then
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			pkgp_fetch ${PKG_URL} ${PKG_SHA256SUM} ${PKG_FNAME};
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		fi;
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		if [ -n "${PKG_URLS_GIT}" ]; then
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			pkgp_fetch_urls_git ${PKG_URLS_GIT};
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		fi;
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	fi;
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};
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# vim:filetype=sh