Function prefix_ref_iterator_advance

refs/iterator.c:335–374

}

static int prefix_ref_iterator_advance(struct ref_iterator *ref_iterator)
{
	struct prefix_ref_iterator *iter =
		(struct prefix_ref_iterator *)ref_iterator;
	int ok;

	while ((ok = ref_iterator_advance(iter->iter0)) == ITER_OK) {
		int cmp = compare_prefix(iter->iter0->ref.name, iter->prefix);
		if (cmp < 0)
			continue;
		/*
		 * As the source iterator is ordered, we
		 * can stop the iteration as soon as we see a
		 * refname that comes after the prefix:
		 */
		if (cmp > 0)
			return ITER_DONE;

		iter->base.ref = iter->iter0->ref;

		if (iter->trim) {
			/*
			 * It is nonsense to trim off characters that
			 * you haven't already checked for via a
			 * prefix check, whether via this
			 * `prefix_ref_iterator` or upstream in
			 * `iter0`). So if there wouldn't be at least
			 * one character left in the refname after
			 * trimming, report it as a bug:
			 */
			if (strlen(iter->base.ref.name) <= iter->trim)
				BUG("attempt to trim too many characters");
			iter->base.ref.name += iter->trim;
		}

		return ITER_OK;
	}

	return ok;
}

static int prefix_ref_iterator_seek(struct ref_iterator *ref_iterator,
				    const char *refname, unsigned int flags)