[PATCH 1/2] replace-objects: use arbitrary repositories

[Stefan Beller <sbeller@google.com>]

From: Derrick Stolee <dstolee@microsoft.com>

This is the smallest possible change that makes prepare_replace_objects
work properly with arbitrary repositories. By supplying the repository
as the cb_data, we do not need to modify any code in the ref iterator
logic. We will likely want to do a full replacement of the ref iterator
logic to provide a repository struct as a concrete parameter.

[sb: original commit message left as-is. I disagree with it.
We want to keep the ref store API clean and focussed on struct
ref_store. There is no need to treat a repository any special
for pass-through by the callback cookie. So instead let's just
pass the repository as a cb cookie and cleanup the API in follow
up patches]

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
 replace-object.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/replace-object.c b/replace-object.c
index 801b5c16789..e99fcd1ff6e 100644
--- a/replace-object.c
+++ b/replace-object.c
@@ -14,6 +14,7 @@ static int register_replace_ref(const char *refname,
 	const char *slash = strrchr(refname, '/');
 	const char *hash = slash ? slash + 1 : refname;
 	struct replace_object *repl_obj = xmalloc(sizeof(*repl_obj));
+	struct repository *r = (struct repository *)cb_data;
 
 	if (get_oid_hex(hash, &repl_obj->original.oid)) {
 		free(repl_obj);
@@ -25,7 +26,7 @@ static int register_replace_ref(const char *refname,
 	oidcpy(&repl_obj->replacement, oid);
 
 	/* Register new object */
-	if (oidmap_put(the_repository->objects->replace_map, repl_obj))
+	if (oidmap_put(r->objects->replace_map, repl_obj))
 		die("duplicate replace ref: %s", refname);
 
 	return 0;
@@ -40,7 +41,7 @@ static void prepare_replace_object(struct repository *r)
 		xmalloc(sizeof(*r->objects->replace_map));
 	oidmap_init(r->objects->replace_map, 0);
 
-	for_each_replace_ref(r, register_replace_ref, NULL);
+	for_each_replace_ref(r, register_replace_ref, r);
 }
 
 /* We allow "recursive" replacement. Only within reason, though */
-- 
2.18.0.132.g195c49a2227