From: Junio C Hamano <junkio@cox.net>
Date: Mon, 18 Dec 2006 02:08:52 +0000 (-0800)
Subject: avoid accessing _all_ loose refs in git-show-ref --verify
X-Git-Tag: v1.5.0-rc0~83
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=26cdd1e7c7a21b6d71ebc201fc2472a6a68f5ce4;p=git.git

avoid accessing _all_ loose refs in git-show-ref --verify

If you want to verify a ref, it is overkill to first read all loose refs
into a linked list, and then check if the desired ref is there.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
---

diff --git a/builtin-show-ref.c b/builtin-show-ref.c
index b36f15eea..23e0ff8fb 100644
--- a/builtin-show-ref.c
+++ b/builtin-show-ref.c
@@ -213,6 +213,23 @@ int cmd_show_ref(int argc, const char **argv, const char *prefix)
 			return exclude_existing(arg + 19);
 		usage(show_ref_usage);
 	}
+
+	if (verify) {
+		unsigned char sha1[20];
+
+		while (*pattern) {
+			if (resolve_ref(*pattern, sha1, 1, NULL))
+				printf("%s %s\n", sha1_to_hex(sha1),
+				       *pattern);
+			else if (!quiet)
+				die("'%s' - not a valid ref", *pattern);
+			else
+				return 1;
+			pattern++;
+		}
+		return 0;
+	}
+
 	if (show_head)
 		head_ref(show_ref, NULL);
 	for_each_ref(show_ref, NULL);