ObjFW  Diff

			return of_string_position_to_index(string, i);

		/* Did not match and we're at the last char */
		if (i == 0)
			return SIZE_MAX;
	}
}

- (BOOL)containsString: (OFString*)str
{
	const char *str_c = [str cString];
	size_t str_len = [str cStringLength];
	size_t i;

	if (str_len == 0)
		return YES;

	if (str_len > length)
		return NO;

	for (i = 0; i <= length - str_len; i++)
		if (!memcmp(string + i, str_c, str_len))
			return YES;

	return NO;
}

- (OFString*)substringFromIndex: (size_t)start
			toIndex: (size_t)end
{
	if ([self isUTF8]) {
		start = of_string_index_to_position(string, start, length);
		end = of_string_index_to_position(string, end, length);