import java.io.*;
import javax.swing.*;

public class LogStream extends OutputStream {

  OutputStream okstream;

  public LogStream(OutputStream okstream) {
    this.okstream = okstream;
  }

  static int maxmessage = 400;
  StringBuffer message = new StringBuffer();
  boolean done = false;

  void accumulate(String s) {
    if (done) return;
    message.append(s);
    if (message.length() > maxmessage) {
      done = true;
      ErrorLog.log("Uncaught exception!\n"+
		   "This means that there was an error that Carto did not expect\n"+
		   "This may or may not be serious\nThe error messsage started:\n"+
		   message+"\n");
    }
  }

  public void write(byte[] b) throws IOException {
    okstream.write(b);
    accumulate(new String(b));
  }

  public void write(byte[] b,int off, int len)  throws IOException {
    okstream.write(b,off,len);
    accumulate(new String(b,off,len));
  }

  public void write(int b)  throws IOException {
    okstream.write(b);
    byte[] bar = new byte[1];
    bar[0]=(byte)b;
    accumulate(new String(bar));
  }

  public void flush() throws IOException {
    okstream.flush();
  }

  public void close() throws IOException {
    okstream.close();
  }
}