[PATCH v3 8/9] sha1_name.c: teach get_short_sha1() a commit-only option

From

Junio C Hamano <gitster@pobox.com>

Date

Jun 24, 2012, 00:11 UTC

Message-ID

<1340496691-12258-9-git-send-email-gitster@pobox.com>

In-Reply-To

<1340496691-12258-1-git-send-email-gitster@pobox.com>

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 sha1_name.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sha1_name.c b/sha1_name.c
index 7cca7d9..58dbbe2 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -219,6 +219,13 @@ static int finish_object_disambiguation(struct disambiguate_state *ds,
 }
 
 #define GET_SHORT_QUIETLY 01
+#define GET_SHORT_COMMIT_ONLY 02
+
+static int disambiguate_commit_only(const unsigned char *sha1, void *cb_data_unused)
+{
+	int kind = sha1_object_info(sha1, NULL);
+	return kind == OBJ_COMMIT;
+}
 
 static int get_short_sha1(const char *name, int len, unsigned char *sha1,
 			  unsigned flags)
@@ -255,6 +262,9 @@ static int get_short_sha1(const char *name, int len, unsigned char *sha1,
 	prepare_alt_odb();
 
 	memset(&ds, 0, sizeof(ds));
+	if (flags & GET_SHORT_COMMIT_ONLY)
+		ds.fn = disambiguate_commit_only;
+
 	find_short_object_filename(len, hex_pfx, &ds);
 	find_short_packed_object(len, bin_pfx, &ds);
 	status = finish_object_disambiguation(&ds, sha1);

-- 
1.7.11.1.29.gf71be5c