+
+ [ -n "$GET_REV" ] || GET_REV="HEAD"
+
+ case "$GET_REV" in
+ r*)
+ GET_REV="$(echo $GET_REV | tr -d 'r')"
+ BASE_REV="$(git rev-list reboot..HEAD | wc -l | awk '{print $1}')"
+ REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
+ ;;
+ *)
+ BRANCH="$(git rev-parse --abbrev-ref HEAD)"
+ ORIGIN="$(git rev-parse --symbolic-full-name ${BRANCH}@{u} 2>/dev/null)"
+ [ -n "$ORIGIN" ] || ORIGIN="$(git rev-parse --symbolic-full-name master@{u} 2>/dev/null)"
+ REV="$(git rev-list reboot..$GET_REV | wc -l | awk '{print $1}')"
+
+ if [ -n "$ORIGIN" ]; then
+ UPSTREAM_BASE="$(git merge-base $GET_REV $ORIGIN)"
+ UPSTREAM_REV="$(git rev-list reboot..$UPSTREAM_BASE | wc -l | awk '{print $1}')"
+ else
+ UPSTREAM_REV=$REV
+ fi
+
+ if [ "$REV" -gt "$UPSTREAM_REV" ]; then
+ REV="${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
+ fi
+
+ REV="${REV:+r$REV}"
+ ;;
+ esac
+