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refs: add function to repack without multiple refs

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Generalize repack_without_ref as repack_without_refs to support a list
of refs and implement the former in terms of the latter.

Signed-off-by: Brad King <brad.king@kitware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brad King 2013-09-04 11:22:42 -04:00 committed by Junio C Hamano
parent 2ddb5d170a
commit 61cee0dbac
1 changed files with 24 additions and 9 deletions
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33
refs.c
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@ -2414,42 +2414,57 @@ static int curate_packed_ref_fn(struct ref_entry *entry, void *cb_data)
return 0;
}
static int repack_without_ref(const char *refname)
static int repack_without_refs(const char **refnames, int n)
{
struct ref_dir *packed;
struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
struct string_list_item *ref_to_delete;
int i, removed = 0;
if (!get_packed_ref(refname))
return 0; /* refname does not exist in packed refs */
/* Look for a packed ref */
for (i = 0; i < n; i++)
if (get_packed_ref(refnames[i]))
break;
/* Avoid locking if we have nothing to do */
if (i == n)
return 0; /* no refname exists in packed refs */
if (lock_packed_refs(0)) {
unable_to_lock_error(git_path("packed-refs"), errno);
return error("cannot delete '%s' from packed refs", refname);
return error("cannot delete '%s' from packed refs", refnames[i]);
}
packed = get_packed_refs(&ref_cache);
/* Remove refname from the cache: */
if (remove_entry(packed, refname) == -1) {
/* Remove refnames from the cache */
for (i = 0; i < n; i++)
if (remove_entry(packed, refnames[i]) != -1)
removed = 1;
if (!removed) {
/*
* The packed entry disappeared while we were
* All packed entries disappeared while we were
* acquiring the lock.
*/
rollback_packed_refs();
return 0;
}
/* Remove any other accumulated cruft: */
/* Remove any other accumulated cruft */
do_for_each_entry_in_dir(packed, 0, curate_packed_ref_fn, &refs_to_delete);
for_each_string_list_item(ref_to_delete, &refs_to_delete) {
if (remove_entry(packed, ref_to_delete->string) == -1)
die("internal error");
}
/* Write what remains: */
/* Write what remains */
return commit_packed_refs();
}
static int repack_without_ref(const char *refname)
{
return repack_without_refs(&refname, 1);
}
static int delete_ref_loose(struct ref_lock *lock, int flag)
{
if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {