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git-describe: still prefer annotated tag under --all and --tags

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Even though --all and --tags can be used to include non
annotated tags in the reference point candidates, prefer to use
annotated tags if there are more than one refs that name the
same commit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2005-12-27 16:09:37 -08:00
parent 2d9e7c9f90
commit 64deb858b0
1 changed files with 27 additions and 11 deletions
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38
describe.c
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@ -17,6 +17,7 @@ static int abbrev = DEFAULT_ABBREV;
static int names = 0, allocs = 0;
static struct commit_name {
const struct commit *commit;
int prio; /* annotated tag = 2, tag = 1, head = 0 */
char path[];
} **name_array = NULL;
@ -33,13 +34,16 @@ static struct commit_name *match(struct commit *cmit)
return NULL;
}
static void add_to_known_names(const char *path, const struct commit *commit)
static void add_to_known_names(const char *path,
const struct commit *commit,
int prio)
{
int idx;
int len = strlen(path)+1;
struct commit_name *name = xmalloc(sizeof(struct commit_name) + len);
name->commit = commit;
name->prio = prio;
memcpy(name->path, path, len);
idx = names;
if (idx >= allocs) {
@ -53,23 +57,32 @@ static void add_to_known_names(const char *path, const struct commit *commit)
static int get_name(const char *path, const unsigned char *sha1)
{
struct commit *commit = lookup_commit_reference_gently(sha1, 1);
struct object *object;
int prio;
if (!commit)
return 0;
object = parse_object(sha1);
/* If --all, then any refs are used.
* If --tags, then any tags are used.
* Otherwise only annotated tags are used.
*/
if (!all) {
if (strncmp(path, "refs/tags/", 10))
return 0;
if (!tags) {
struct object *object;
object = parse_object(sha1);
if (object->type != tag_type)
return 0;
}
if (!strncmp(path, "refs/tags/", 10)) {
if (object->type == tag_type)
prio = 2;
else
prio = 1;
}
add_to_known_names(all ? path : path + 10, commit);
else
prio = 0;
if (!all) {
if (!prio)
return 0;
if (!tags && prio < 2)
return 0;
}
add_to_known_names(all ? path + 5 : path + 10, commit, prio);
return 0;
}
@ -79,6 +92,9 @@ static int compare_names(const void *_a, const void *_b)
struct commit_name *b = *(struct commit_name **)_b;
unsigned long a_date = a->commit->date;
unsigned long b_date = b->commit->date;
if (a->prio != b->prio)
return b->prio - a->prio;
return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1;
}