/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.filters;
import java.io.IOException;
import java.io.OutputStream;
import com.caucho.server.http.ToByteResponseStream;
public class FilterWrapperResponseStream extends ToByteResponseStream {
private CauchoResponseWrapper _response;
private OutputStream _os;
public FilterWrapperResponseStream()
{
}
public void init(CauchoResponseWrapper response)
{
_response = response;
_os = null;
}
/**
* Writes the next chunk of data to the response stream.
*
* @param buf the buffer containing the data
* @param offset start offset into the buffer
* @param length length of the data in the buffer
*/
@Override
protected void writeNext(byte []buf, int offset, int length, boolean isEnd)
throws IOException
{
OutputStream os = getStream();
if (os != null)
os.write(buf, offset, length);
}
/**
* flushing
*/
@Override
public void flush()
throws IOException
{
flushBuffer();
OutputStream os = getStream();
if (os != null)
os.flush();
}
/**
* Gets the stream.
*/
private OutputStream getStream()
throws IOException
{
if (_os != null)
return _os;
else if (_response != null)
_os = _response.getStream();
return _os;
}
/**
* Close.
*/
public void closeImpl()
throws IOException
{
super.closeImpl();
_response = null;
OutputStream os = _os;
_os = null;
// server/1839
if (os != null)
os.close();
}
}