Add strbuf_cmp.

diff --git a/refs.c b/refs.c
index 09a2c87fc23e4298bb3bcddc5c2cc649c3206a04..07e260c8a15c9118ee829964aed65b209900dc36 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1246,15 +1246,11 @@ int create_symref(const char *ref_target, const char *refs_heads_master,
 static char *ref_msg(const char *line, const char *endp)
 {
        const char *ep;
-       char *msg;
-
        line += 82;
-       for (ep = line; ep < endp && *ep != '\n'; ep++)
-               ;
-       msg = xmalloc(ep - line + 1);
-       memcpy(msg, line, ep - line);
-       msg[ep - line] = 0;
-       return msg;
+       ep = memchr(line, '\n', endp - line);
+       if (!ep)
+               ep = endp;
+       return xmemdupz(line, ep - line);
 }
 
 int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
@@ -1455,3 +1451,30 @@ int for_each_reflog(each_ref_fn fn, void *cb_data)
 {
        return do_for_each_reflog("", fn, cb_data);
 }
+
+int update_ref(const char *action, const char *refname,
+               const unsigned char *sha1, const unsigned char *oldval,
+               int flags, enum action_on_err onerr)
+{
+       static struct ref_lock *lock;
+       lock = lock_any_ref_for_update(refname, oldval, flags);
+       if (!lock) {
+               const char *str = "Cannot lock the ref '%s'.";
+               switch (onerr) {
+               case MSG_ON_ERR: error(str, refname); break;
+               case DIE_ON_ERR: die(str, refname); break;
+               case QUIET_ON_ERR: break;
+               }
+               return 1;
+       }
+       if (write_ref_sha1(lock, sha1, action) < 0) {
+               const char *str = "Cannot update the ref '%s'.";
+               switch (onerr) {
+               case MSG_ON_ERR: error(str, refname); break;
+               case DIE_ON_ERR: die(str, refname); break;
+               case QUIET_ON_ERR: break;
+               }
+               return 1;
+       }
+       return 0;
+}