undef/git-commit-vandalism
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hard-code the empty tree object

Browse Source 
Now any commands may reference the empty tree object by its
sha1 (4b825dc642). 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>
This commit is contained in:
Jeff King 2008-02-13 06:25:04 -05:00 committed by Junio C Hamano
parent 6c47d0e8f3
commit 346245a1bb
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
sha1_file.c
View File

@ -1845,6 +1845,15 @@ static struct cached_object {
} *cached_objects; } *cached_objects;
static int cached_object_nr, cached_object_alloc; 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) static struct cached_object *find_cached_object(const unsigned char *sha1)
{ {
int i; int i;
@ -1854,6 +1863,8 @@ static struct cached_object *find_cached_object(const unsigned char *sha1)
if (!hashcmp(co->sha1, sha1)) if (!hashcmp(co->sha1, sha1))
return co; return co;
} }
if (!hashcmp(sha1, empty_tree.sha1))
return &empty_tree;
return NULL; return NULL;
} }