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authorJeff King <peff@peff.net>2008-02-13 11:25:04 (GMT)
committerJunio C Hamano <gitster@pobox.com>2008-02-13 21:44:17 (GMT)
commit346245a1bb6272dd370ba2f7b9bf86d3df5fed9a (patch)
tree96aef73bb331d94b46d0d6c70d364df74ae77cc9 /sha1_file.c
parent6c47d0e8f3983cff5bf633cb8e6f7ecfecf48db7 (diff)
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hard-code the empty tree object
Now any commands may reference the empty tree object by its sha1 (4b825dc642cb6eb9a060e54bf8d69288fbee4904). This is useful for showing some diffs, especially for initial commits. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'sha1_file.c')
-rw-r--r--sha1_file.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/sha1_file.c b/sha1_file.c
index 66a4e00..f7b75b2 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1845,6 +1845,15 @@ static struct cached_object {
} *cached_objects;
static int cached_object_nr, cached_object_alloc;
+static struct cached_object empty_tree = {
+ /* empty tree sha1: 4b825dc642cb6eb9a060e54bf8d69288fbee4904 */
+ "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60"
+ "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04",
+ OBJ_TREE,
+ "",
+ 0
+};
+
static struct cached_object *find_cached_object(const unsigned char *sha1)
{
int i;
@@ -1854,6 +1863,8 @@ static struct cached_object *find_cached_object(const unsigned char *sha1)
if (!hashcmp(co->sha1, sha1))
return co;
}
+ if (!hashcmp(sha1, empty_tree.sha1))
+ return &empty_tree;
return NULL;
}