Function read_cruft_objects

builtin/pack-objects.c:4300–4357

}

static void read_cruft_objects(void)
{
	struct strbuf buf = STRBUF_INIT;
	struct string_list discard_packs = STRING_LIST_INIT_DUP;
	struct string_list fresh_packs = STRING_LIST_INIT_DUP;
	struct packed_git *p;

	ignore_packed_keep_in_core = 1;

	while (strbuf_getline(&buf, stdin) != EOF) {
		if (!buf.len)
			continue;

		if (*buf.buf == '-')
			string_list_append(&discard_packs, buf.buf + 1);
		else
			string_list_append(&fresh_packs, buf.buf);
	}

	string_list_sort(&discard_packs);
	string_list_sort(&fresh_packs);

	repo_for_each_pack(the_repository, p) {
		const char *pack_name = pack_basename(p);
		struct string_list_item *item;

		item = string_list_lookup(&fresh_packs, pack_name);
		if (!item)
			item = string_list_lookup(&discard_packs, pack_name);

		if (item) {
			item->util = p;
		} else {
			/*
			 * This pack wasn't mentioned in either the "fresh" or
			 * "discard" list, so the caller didn't know about it.
			 *
			 * Mark it as kept so that its objects are ignored by
			 * add_unseen_recent_objects_to_traversal(). We'll
			 * unmark it before starting the traversal so it doesn't
			 * halt the traversal early.
			 */
			p->pack_keep_in_core = 1;
		}
	}

	mark_pack_kept_in_core(&fresh_packs, 1);
	mark_pack_kept_in_core(&discard_packs, 0);

	if (cruft_expiration)
		enumerate_and_traverse_cruft_objects(&fresh_packs);
	else
		enumerate_cruft_objects();

	strbuf_release(&buf);
	string_list_clear(&discard_packs, 0);
	string_list_clear(&fresh_packs, 0);
}