update: check tag revisions and update if we do not find the revision

1 files changed, 27 insertions, 7 deletions

diff --git a/bin/update b/bin/update
index 1d317ed..f7b7c44 100755
--- a/bin/update
+++ b/bin/update
@@ -98,25 +98,45 @@ if test "${UPDATE_UPSTREAM}" = 1; then
 		IFS=" "
 		while read pkgname pkgver tag revision; do
 			if test "${VERBOSE}" = 1; then
-				echo "${repo} ${pkgname}"
+				echo -n "${repo} ${pkgname}"
 			fi
 			if test ! -d "${packages_dir}/${repo}/${pkgname}"; then
+				if test "${VERBOSE}" = 1; then
+					echo ".. cloning .."
+				fi
 				cd "${packages_dir}/${repo}" || exit 1
 				pkgctl repo clone --protocol=https "${pkgname}"
 				sleep 10
 			else
-				true
-# TODO: find a way to find out whether the reference revision is in out
-#       current state repo and update only when we miss it. We can still
-#       do a full update when we need it, but here it just creates a lot
-#       of load..
-#				git -C "${packages_dir}/${repo}/${pkgname}" pull
+				# get all revisions from the package repo, check if
+				# we find the state sha in there, if not, do an
+				# update of the repo. Doing a full git pull on
+				# every update is not acceptable as it creates too
+				# much load
+				cd "${packages_dir}/${repo}/${pkgname}" || exit 1
+				git show-ref --tags > /tmp/update_package_revisions.$$
+				grep -F "${revision}" "/tmp/update_package_revisions.$$" 2>&1 >/tmp/update_package_revision_found.$$
+				if test $? = 0; then
+					if test "${VERBOSE}"; then
+						tag=`cat /tmp/update_package_revision_found.$$ | cut -d ' ' -f 2`
+						echo ".. ${revision} (${tag}) exists in package history .."
+					fi
+				else
+					if test "${VERBOSE}"; then
+						echo ".. updating .."
+					fi
+					git -C "${packages_dir}/${repo}/${pkgname}" pull
+					sleep 10
+				fi
+				rm -f /tmp/update_package_revisions.$$ /tmp/update_package_revision_found.$$
 			fi
 		done < $pkgfile
 		IFS="$OLDIFS"
 	done
 fi
 
+rm -f /tmp/update_packages.$$
+
 if test "${UPDATE_AUR}" = 1; then
 	echo "Updating AUR state.."