private fun isDot(input: String): Boolean {
      return input == "." || input.equals("%2e", ignoreCase = true)
    }

    private fun isDotDot(input: String): Boolean {
      return input == ".." ||
        input.equals("%2e.", ignoreCase = true) ||
        input.equals(".%2e", ignoreCase = true) ||
        input.equals("%2e%2e", ignoreCase = true)
    }

    /**