!747

m {

  static S question = "Is port 80 open?";

  p {

    if (args.length != 0)

      question = join(" ", args);

    L<S> tok = parse(question);

    //print(structure(tok));

    print("Q: " + question);

    S[] match = match2(parse("is port * open"), tok);

    if (match != null) {

      int port = parseInt(match[0]);

      print("I'll check port " + port + "..."); 

      boolean answer = isPortOpen(port);

      print("A: " + (answer ? "Yes, it is open!" : "No, it is not open."));

    } else

      print("Unknown question: " + join(tok));

  }

  static L<S> parse(S s) {

    return tokensToLowerCase(dropPunctuation(javaTokPlusPeriod(s)));

  }

}