summaryrefslogtreecommitdiff
path: root/sha1_name.c
diff options
context:
space:
mode:
authorJunio C Hamano <junkio@cox.net>2006-04-22 00:31:04 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-05-01 00:55:34 (GMT)
commit73b0e5af9daf38734d94ed170f8800481e15567f (patch)
tree9e67263c048c5a15d9a47520c7e9e0110a601488 /sha1_name.c
parent66ae0c7702e68765dad17aa05c5d9255d999216c (diff)
downloadgit-73b0e5af9daf38734d94ed170f8800481e15567f.zip
git-73b0e5af9daf38734d94ed170f8800481e15567f.tar.gz
git-73b0e5af9daf38734d94ed170f8800481e15567f.tar.bz2
get_sha1(): :path and :[0-3]:path to extract from index.
Earlier patch to say <ent>:<path> by Linus was very useful, and this extends the same idea to the current index. An sha1 expression :<path> extracts the object name for the named path from the current index. Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'sha1_name.c')
-rw-r--r--sha1_name.c54
1 files changed, 46 insertions, 8 deletions
diff --git a/sha1_name.c b/sha1_name.c
index 345935b..ec5cd2c 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -458,17 +458,55 @@ int get_sha1(const char *name, unsigned char *sha1)
{
int ret;
unsigned unused;
+ int namelen = strlen(name);
+ const char *cp;
prepare_alt_odb();
- ret = get_sha1_1(name, strlen(name), sha1);
- if (ret < 0) {
- const char *cp = strchr(name, ':');
- if (cp) {
- unsigned char tree_sha1[20];
- if (!get_sha1_1(name, cp-name, tree_sha1))
- return get_tree_entry(tree_sha1, cp+1, sha1,
- &unused);
+ ret = get_sha1_1(name, namelen, sha1);
+ if (!ret)
+ return ret;
+ /* sha1:path --> object name of path in ent sha1
+ * :path -> object name of path in index
+ * :[0-3]:path -> object name of path in index at stage
+ */
+ if (name[0] == ':') {
+ int stage = 0;
+ struct cache_entry *ce;
+ int pos;
+ if (namelen < 3 ||
+ name[2] != ':' ||
+ name[1] < '0' || '3' < name[1])
+ cp = name + 1;
+ else {
+ stage = name[1] - '0';
+ cp = name + 3;
}
+ namelen = namelen - (cp - name);
+ if (!active_cache)
+ read_cache();
+ if (active_nr < 0)
+ return -1;
+ pos = cache_name_pos(cp, namelen);
+ if (pos < 0)
+ pos = -pos - 1;
+ while (pos < active_nr) {
+ ce = active_cache[pos];
+ if (ce_namelen(ce) != namelen ||
+ memcmp(ce->name, cp, namelen))
+ break;
+ if (ce_stage(ce) == stage) {
+ memcpy(sha1, ce->sha1, 20);
+ return 0;
+ }
+ }
+ return -1;
+ }
+ cp = strchr(name, ':');
+ if (cp) {
+ unsigned char tree_sha1[20];
+ if (!get_sha1_1(name, cp-name, tree_sha1))
+ return get_tree_entry(tree_sha1, cp+1, sha1,
+ &unused);
}
return ret;
}