//////////////////////////////////////////////////////////////////////////////
//
// Consult-O-Matic
// by Greg Hewgill, December 7, 1997
//
// This program generates random text based on the text in ConsultOMatic.txt,
// its input file. It can be run as either an applet or an application.
//
// Consult-O-Matic is based on Foggy, a Turbo Pascal program by John Lawler.
//
//////////////////////////////////////////////////////////////////////////////

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Event;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Random;
import java.util.Vector;

public class ConsultOMatic extends Applet {
  private final static int WIDTH = 80;

  private TextField SentencesField;
  private Button Go;
  private TextArea Output;

  private Vector Text; // Vector of Vectors of Strings

  public boolean action(Event evt, Object what)
  {
    if (evt.target == Go) {
      int sentences = 5;
      try {
        sentences = Integer.parseInt(SentencesField.getText());
      } catch (NumberFormatException nfx) {
      }
      Output.setText(buildOutput(sentences));
    } else {
      return super.action(evt, what);
    }
    return true;
  }

  private String buildOutput(int sentences)
  {
    if (sentences < 1) {
      sentences = 1;
    } else if (sentences > 9) {
      sentences = 9;
    }
    Vector used = new Vector();
    for (int i = 0; i < Text.size(); i++) {
      used.addElement(new boolean[((Vector)Text.elementAt(i)).size()]);
    }
    StringBuffer r = new StringBuffer();
    Random rnd = new Random(System.currentTimeMillis());
    for (int i = 0; i < sentences; i++) {
      for (int j = 0; j < Text.size(); j++) {
        Vector phrases = (Vector)Text.elementAt(j);
        boolean[] usedphrases = (boolean[])used.elementAt(j);
        int k;
        do {
          k = rnd.nextInt() % phrases.size();
          if (k < 0) {
            k = (-k) % phrases.size();
          }
        } while (usedphrases[k]);
        usedphrases[k] = true;
        if (r.length() > 0) {
          r.append(' ');
        }
        r.append(phrases.elementAt(k));
      }
    }
    int i = 0;
    while (true) {
      i += WIDTH-1;
      if (i >= r.length()) {
        break;
      }
      while (r.charAt(i) != ' ') {
        i--;
      }
      r.setCharAt(i, '\n');
    }
    return new String(r);
  }

  public void init()
  {
    setLayout(new BorderLayout());
    Panel title = new Panel();
    title.setLayout(new BorderLayout());
    title.add("West", new Label("Consult-O-Matic"));
    Panel buttons = new Panel();
    buttons.add(new Label("Sentences (1-9):"));
    SentencesField = new TextField("5", 1);
    buttons.add(SentencesField);
    Go = new Button("Go");
    buttons.add(Go);
    title.add("Center", buttons);
    add("North", title);
    Output = new TextArea();
    add("Center", Output);
  }

  public static void main(String[] args)
  {
    new ConsultOMatic().main2();
  }

  private void main2()
  {
    try {
      InputStream in = new FileInputStream("ConsultOMatic.txt");
      readText(in);
      in.close();
      System.out.println(buildOutput(5));
    } catch (FileNotFoundException fnfx) {
    } catch (IOException iox) {
    }
  }

  private void readText(InputStream in) throws IOException
  {
    DataInputStream dis = new DataInputStream(in);
    Text = new Vector();
    while (true) {
      Vector phrases = new Vector();
      Text.addElement(phrases);
      while (true) {
        String s = dis.readLine();
        if (s == null) {
          return;
        }
        s = s.trim();
        if (s.length() == 0) {
          break;
        }
        phrases.addElement(s);
      }
    }
  }

  public void start()
  {
    try {
      InputStream in = new URL(getDocumentBase(), "ConsultOMatic.txt").openStream();
      readText(in);
      in.close();
    } catch (MalformedURLException muex) {
    } catch (IOException iox) {
      Output.setText("Error reading input file.");
    }
  }
}