[PATCH] post-receive: exclude commits from the patch update step

[Brian Norris]

When merging upstream work related to other projects into your own
project repository, you probably don't want to check for (and try to
update) the status on every change-set in the merge. So add a list of
references (branches, tags, commits, etc.) whose commits should be
ignored in the patch update step.

This could be used, for example, to set:

    EXCLUDE="refs/heads/upstream"

Then when you're ready to merge in new upstream code, you first update
the 'upstream' branch before pushing your own.

Signed-off-by: Brian Norris <computersforpeace at gmail.com>
---
 tools/post-receive.hook | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/post-receive.hook b/tools/post-receive.hook
index 4fb741d3ea98..a38522e22f35 100755
--- a/tools/post-receive.hook
+++ b/tools/post-receive.hook
@@ -8,6 +8,12 @@ set -eu
 
 #TODO: the state map should really live in the repo's git-config
 STATE_MAP="refs/heads/master:Accepted"
+#
+# ignore all commits already present in these refs
+# e.g.,
+#   EXCLUDE="refs/heads/upstream refs/heads/other-project"
+#
+EXCLUDE=""
 
 PWDIR=/srv/patchwork/apps/patchwork
 
@@ -39,7 +45,8 @@ set_patch_state()
 update_patches()
 {
   local cnt; cnt=0
-  for rev in $(git rev-list --no-merges --reverse ${1}..${2}); do
+  for rev in $(git rev-parse --not ${EXCLUDE} |
+               git rev-list --stdin --no-merges --reverse ${1}..${2}); do
     if [ "$do_exit" = 1 ]; then
       echo "I: exiting..." >&2
       break
-- 
1.9.1