X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-merge-base.c;h=3382b1382a7dcbd525126a35209072da4b4d8041;hb=daae06259556246959963947752bde4ee2df7b44;hp=1cb2925d2f3dc6dc1a38c31bcec1c10ae8146a22;hpb=679639904da05f7d84e9215960e76dd0f3353328;p=git.git

diff --git a/builtin-merge-base.c b/builtin-merge-base.c
index 1cb2925d2..3382b1382 100644
--- a/builtin-merge-base.c
+++ b/builtin-merge-base.c
@@ -22,10 +22,23 @@ static int show_merge_base(struct commit *rev1, struct commit *rev2, int show_al
 static const char merge_base_usage[] =
 "git merge-base [--all] <commit-id> <commit-id>";
 
+static struct commit *get_commit_reference(const char *arg)
+{
+	unsigned char revkey[20];
+	struct commit *r;
+
+	if (get_sha1(arg, revkey))
+		die("Not a valid object name %s", arg);
+	r = lookup_commit_reference(revkey);
+	if (!r)
+		die("Not a valid commit name %s", arg);
+
+	return r;
+}
+
 int cmd_merge_base(int argc, const char **argv, const char *prefix)
 {
 	struct commit *rev1, *rev2;
-	unsigned char rev1key[20], rev2key[20];
 	int show_all = 0;
 
 	git_config(git_default_config, NULL);
@@ -40,13 +53,8 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
 	}
 	if (argc != 3)
 		usage(merge_base_usage);
-	if (get_sha1(argv[1], rev1key))
-		die("Not a valid object name %s", argv[1]);
-	if (get_sha1(argv[2], rev2key))
-		die("Not a valid object name %s", argv[2]);
-	rev1 = lookup_commit_reference(rev1key);
-	rev2 = lookup_commit_reference(rev2key);
-	if (!rev1 || !rev2)
-		return 1;
+	rev1 = get_commit_reference(argv[1]);
+	rev2 = get_commit_reference(argv[2]);
+
 	return show_merge_base(rev1, rev2, show_all);
 }