/**
 * Copyright (c) 2007, Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of MSPSim.
 *
 * $Id$
 *
 * -----------------------------------------------------------------
 *
 * LineOutputStream
 *
 * Author  : Joakim Eriksson
 * Created : 8 mar 2008
 * Updated : $Date$
 *           $Revision$
 */
package se.sics.mspsim.cli;

import java.io.IOException;
import java.io.OutputStream;

/**
 * @author joakim
 *
 */
public class LineOutputStream extends OutputStream {

  private StringBuilder line = new StringBuilder();
  private LineListener listener;
  
  public LineOutputStream(LineListener listener) {
    this.listener = listener;
  }

  /* Buffers and calls line listener when a line is complete
   * @see java.io.OutputStream#write(int)
   */
  @Override
  public void write(int c) throws IOException {
    if (c == '\n') {
      listener.lineRead(line.toString());
      line.setLength(0);
    } else if (c != '\r'){
      line.append((char) c);
    }
  }
}
