Function push_level

dir-iterator.c:86–139

* Push a level in the iter stack and initialize it with information from * the directory pointed by iter->base->path. It is assumed that this * strbuf points to a valid directory path. Return 0 on success and -1 * otherwise, setting errno accordingly and leaving the stack unchanged. */

 * otherwise, setting errno accordingly and leaving the stack unchanged.
 */
static int push_level(struct dir_iterator_int *iter)
{
	struct dir_iterator_level *level;

	ALLOC_GROW(iter->levels, iter->levels_nr + 1, iter->levels_alloc);
	level = &iter->levels[iter->levels_nr++];

	if (!is_dir_sep(iter->base.path.buf[iter->base.path.len - 1]))
		strbuf_addch(&iter->base.path, '/');
	level->prefix_len = iter->base.path.len;

	level->dir = opendir(iter->base.path.buf);
	if (!level->dir) {
		int saved_errno = errno;
		if (errno != ENOENT) {
			warning_errno("error opening directory '%s'",
				      iter->base.path.buf);
		}
		iter->levels_nr--;
		errno = saved_errno;
		return -1;
	}

	string_list_init_dup(&level->entries);
	level->entries_idx = 0;

	/*
	 * When the iterator is sorted we read and sort all directory entries
	 * directly.
	 */
	if (iter->flags & DIR_ITERATOR_SORTED) {
		struct dirent *de;

		while (1) {
			int ret = next_directory_entry(level->dir, iter->base.path.buf, &de);
			if (ret < 0) {
				if (errno != ENOENT &&
				    iter->flags & DIR_ITERATOR_PEDANTIC)
					return -1;
				continue;
			} else if (ret > 0) {
				break;
			}

			string_list_append(&level->entries, de->d_name);
		}
		string_list_sort(&level->entries);

		closedir(level->dir);
		level->dir = NULL;
	}

	return 0;
}

/*
 * Pop the top level on the iter stack, releasing any resources associated