refs.c: make delete_ref use a transaction

Change delete_ref to use a ref transaction for the deletion. At the same time
since we no longer have any callers of repack_without_ref we can now delete
this function.

Change delete_ref to return 0 on success and 1 on failure instead of the
previous 0 on success either 1 or -1 on failure.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs.c b/refs.c
index 22eb3dda7d02b40738a81e2f41eddd8f9f65a002..723557485d9f1ee76482fe3eae3e45b613de2788 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -2548,11 +2548,6 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
        return ret;
 }
 
-static int repack_without_ref(const char *refname)
-{
-       return repack_without_refs(&refname, 1, NULL);
-}
-
 static int delete_ref_loose(struct ref_lock *lock, int flag)
 {
        if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
@@ -2570,24 +2565,22 @@ static int delete_ref_loose(struct ref_lock *lock, int flag)
 
 int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
 {
-       struct ref_lock *lock;
-       int ret = 0, flag = 0;
+       struct ref_transaction *transaction;
+       struct strbuf err = STRBUF_INIT;
 
-       lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag);
-       if (!lock)
+       transaction = ref_transaction_begin(&err);
+       if (!transaction ||
+           ref_transaction_delete(transaction, refname, sha1, delopt,
+                                  sha1 && !is_null_sha1(sha1), &err) ||
+           ref_transaction_commit(transaction, NULL, &err)) {
+               error("%s", err.buf);
+               ref_transaction_free(transaction);
+               strbuf_release(&err);
                return 1;
-       ret |= delete_ref_loose(lock, flag);
-
-       /* removing the loose one could have resurrected an earlier
-        * packed one.  Also, if it was not loose we need to repack
-        * without it.
-        */
-       ret |= repack_without_ref(lock->ref_name);
-
-       unlink_or_warn(git_path("logs/%s", lock->ref_name));
-       clear_loose_ref_cache(&ref_cache);
-       unlock_ref(lock);
-       return ret;
+       }
+       ref_transaction_free(transaction);
+       strbuf_release(&err);
+       return 0;
 }
 
 /*