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remote: let guess_remote_head() optionally return all matches

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Determining HEAD is ambiguous since it is done by comparing SHA1s.

In the case of multiple matches we return refs/heads/master if it
matches, else we return the first match we encounter. builtin-remote
needs all matches returned to it, so add a flag for it to request such.

To be simple and consistent, the return value is now a copy (including
peer_ref) of the matching refs.

Originally contributed by Jeff King along with the prior commit as a
single patch.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jay Soffian
2009-02-27 14:10:05 -05:00
committed by Junio C Hamano
parent 7b3db095d5
commit 4229f1fa32
3 changed files with 28 additions and 17 deletions
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29
remote.c
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@ -1460,24 +1460,33 @@ struct ref *get_local_heads(void)
return local_refs;
}
const struct ref *guess_remote_head(const struct ref *head,
const struct ref *refs)
struct ref *guess_remote_head(const struct ref *head,
const struct ref *refs,
int all)
{
const struct ref *r;
struct ref *list = NULL;
struct ref **tail = &list;
if (!head)
return NULL;
/* If refs/heads/master could be right, it is. */
r = find_ref_by_name(refs, "refs/heads/master");
if (r && !hashcmp(r->old_sha1, head->old_sha1))
return r;
if (!all) {
r = find_ref_by_name(refs, "refs/heads/master");
if (r && !hashcmp(r->old_sha1, head->old_sha1))
return copy_ref(r);
}
/* Look for another ref that points there */
for (r = refs; r; r = r->next)
if (r != head && !hashcmp(r->old_sha1, head->old_sha1))
return r;
for (r = refs; r; r = r->next) {
if (r != head && !hashcmp(r->old_sha1, head->old_sha1)) {
*tail = copy_ref(r);
tail = &((*tail)->next);
if (!all)
break;
}
}
/* Nothing is the same */
return NULL;
return list;
}