commit: add repository argument to set_commit_buffer

Add a repository argument to allow callers of set_commit_buffer to
be more specific about which repository to handle. This is a small
mechanical change; it doesn't change the implementation to handle
repositories other than the_repository yet.

As with the previous commits, use a macro to catch callers passing a
repository other than the_repository at compile time.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

blame.c

@@ -158,7 +158,7 @@ static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb)
 {
 	size_t len;
 	void *buf = strbuf_detach(sb, &len);
-	set_commit_buffer(c, buf, len);
+	set_commit_buffer(the_repository, c, buf, len);
 }
 
 /*

commit.c

@@ -262,7 +262,7 @@ struct commit_buffer {
 define_commit_slab(buffer_slab, struct commit_buffer);
 static struct buffer_slab buffer_slab = COMMIT_SLAB_INIT(1, buffer_slab);
 
-void set_commit_buffer(struct commit *commit, void *buffer, unsigned long size)
+void set_commit_buffer_the_repository(struct commit *commit, void *buffer, unsigned long size)
 {
 	struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
 	v->buffer = buffer;
@@ -450,7 +450,7 @@ int parse_commit_gently(struct commit *item, int quiet_on_missing)
 	}
 	ret = parse_commit_buffer(the_repository, item, buffer, size, 0);
 	if (save_commit_buffer && !ret) {
-		set_commit_buffer(item, buffer, size);
+		set_commit_buffer(the_repository, item, buffer, size);
 		return 0;
 	}
 	free(buffer);

commit.h

@@ -95,7 +95,8 @@ void parse_commit_or_die(struct commit *item);
  * Associate an object buffer with the commit. The ownership of the
  * memory is handed over to the commit, and must be free()-able.
  */
-void set_commit_buffer(struct commit *, void *buffer, unsigned long size);
+#define set_commit_buffer(r, c, b, s) set_commit_buffer_##r(c, b, s)
+void set_commit_buffer_the_repository(struct commit *, void *buffer, unsigned long size);
 
 /*
  * Get any cached object buffer associated with the commit. Returns NULL

object.c

@@ -217,7 +217,7 @@ struct object *parse_object_buffer_the_repository(const struct object_id *oid, e
 			if (parse_commit_buffer(the_repository, commit, buffer, size, 1))
 				return NULL;
 			if (!get_cached_commit_buffer(commit, NULL)) {
-				set_commit_buffer(commit, buffer, size);
+				set_commit_buffer(the_repository, commit, buffer, size);
 				*eaten_p = 1;
 			}
 			obj = &commit->object;