git-branch: let caller specify logmsg

This changes the signature of rename_ref() in refs.[hc] to include a
logmessage for the reflogs.

Also, builtin-branch.c is modified to provide a proper logmessage + call
setup_ident() before any logmessages are written.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 3 insertions, 7 deletions

diff --git a/refs.c b/refs.c
index c23561e..2ac8273 100644
--- a/refs.c
+++ b/refs.c
@@ -784,13 +784,12 @@ int delete_ref(const char *refname, unsigned char *sha1)
 	return ret;
 }
 
-int rename_ref(const char *oldref, const char *newref)
+int rename_ref(const char *oldref, const char *newref, const char *logmsg)
 {
 	static const char renamed_ref[] = "RENAMED-REF";
 	unsigned char sha1[20], orig_sha1[20];
 	int flag = 0, logmoved = 0;
 	struct ref_lock *lock;
-	char msg[PATH_MAX*2 + 100];
 	struct stat loginfo;
 	int log = !lstat(git_path("logs/%s", oldref), &loginfo);
 
@@ -806,14 +805,11 @@ int rename_ref(const char *oldref, const char *newref)
 	if (!is_refname_available(newref, oldref, get_loose_refs(), 0))
 		return 1;
 
-	if (snprintf(msg, sizeof(msg), "renamed %s to %s", oldref, newref) > sizeof(msg))
-		return error("Refnames to long");
-
 	lock = lock_ref_sha1_basic(renamed_ref, NULL, NULL);
 	if (!lock)
 		return error("unable to lock %s", renamed_ref);
 	lock->force_write = 1;
-	if (write_ref_sha1(lock, orig_sha1, msg))
+	if (write_ref_sha1(lock, orig_sha1, logmsg))
 		return error("unable to save current sha1 in %s", renamed_ref);
 
 	if (log && rename(git_path("logs/%s", oldref), git_path("tmp-renamed-log")))
@@ -866,7 +862,7 @@ int rename_ref(const char *oldref, const char *newref)
 
 	lock->force_write = 1;
 	hashcpy(lock->old_sha1, orig_sha1);
-	if (write_ref_sha1(lock, orig_sha1, msg)) {
+	if (write_ref_sha1(lock, orig_sha1, logmsg)) {
 		error("unable to write current sha1 into %s", newref);
 		goto rollback;
 	}