/*
 * Copyright
 *   2007 axYus - www.axyus.com
 *
 * This file is part of XEMELIOS.
 *
 * XEMELIOS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * XEMELIOS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with XEMELIOS; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package fr.gouv.finances.dgfip.xemelios.web.utils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

/**
 * @author CBO
 */
public class ByteArrayResponseWrapper extends HttpServletResponseWrapper {

  private ByteArrayServletOuputStream byteArrayServletOuputStream;
  private PrintWriter printWriter;

  public ByteArrayResponseWrapper(HttpServletResponse response) {
    super(response);
    this.byteArrayServletOuputStream = new ByteArrayServletOuputStream();
    this.printWriter = new PrintWriter(this.byteArrayServletOuputStream);
  }

  @Override
  public HttpServletResponse getResponse() {
    return (HttpServletResponse)super.getResponse();
  }

  @Override
  public ServletOutputStream getOutputStream() throws IOException {
    return byteArrayServletOuputStream;
  }

  @Override
  public PrintWriter getWriter() throws IOException {
    return this.printWriter;
  }

  public byte[] toByteArray() throws IOException {
    printWriter.flush();
    byteArrayServletOuputStream.flush();
    return byteArrayServletOuputStream.toByteArray();
  }

  static public class ByteArrayServletOuputStream extends ServletOutputStream {

    private ByteArrayOutputStream output = new ByteArrayOutputStream();

    public ByteArrayServletOuputStream() {
      this.output = new ByteArrayOutputStream();
    }

    @Override
    public void write(int b) throws IOException {
      output.write(b);
    }

//    @Override
//    public void write(byte[] b, int off, int len) throws IOException {
//      super.write(b, off, len);
//    }
//
//    @Override
//    public void write(byte[] b) throws IOException {
//      super.write(b);
//    }
//
    public byte[] toByteArray() {
      return output.toByteArray();
    }

  }
}
