From 0c09ec07d1e617be5f2d7b5c937b60e77a30ede2 Mon Sep 17 00:00:00 2001
From: David Turner <dturner@twopensource.com>
Date: Sun, 4 Sep 2016 18:08:44 +0200
Subject: [PATCH] refs: implement iteration over only per-worktree refs
Alternate refs backends might still use files to store per-worktree
refs. So provide a way to iterate over only the per-worktree references
in a ref_store. The other backend can set up a files ref_store and
iterate using the new DO_FOR_EACH_PER_WORKTREE_ONLY flag when iterating.
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
refs/files-backend.c | 4 ++++
refs/refs-internal.h | 10 +++++++++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 82b3ac0dbc1..47710fcf286 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1798,6 +1798,10 @@ static int files_ref_iterator_advance(struct ref_iterator *ref_iterator)
int ok;
while ((ok = ref_iterator_advance(iter->iter0)) == ITER_OK) {
+ if (iter->flags & DO_FOR_EACH_PER_WORKTREE_ONLY &&
+ ref_type(iter->iter0->refname) != REF_TYPE_PER_WORKTREE)
+ continue;
+
if (!(iter->flags & DO_FOR_EACH_INCLUDE_BROKEN) &&
!ref_resolves_to_object(iter->iter0->refname,
iter->iter0->oid,
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index 681982becd4..708b26082ae 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -467,10 +467,18 @@ extern struct ref_iterator *current_ref_iter;
int do_for_each_ref_iterator(struct ref_iterator *iter,
each_ref_fn fn, void *cb_data);
-/* refs backends */
+/*
+ * Only include per-worktree refs in a do_for_each_ref*() iteration.
+ * Normally this will be used with a files ref_store, since that's
+ * where all reference backends will presumably store their
+ * per-worktree refs.
+ */
+#define DO_FOR_EACH_PER_WORKTREE_ONLY 0x02
struct ref_store;
+/* refs backends */
+
/*
* Initialize the ref_store for the specified submodule, or for the
* main repository if submodule == NULL. These functions should call