org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.servlets.gzip;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.Set;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.eclipse.jetty.util.StringUtil;
/*------------------------------------------------------------ */
/**
*/
public abstract class CompressedResponseWrapper extends HttpServletResponseWrapper
{
public static final int DEFAULT_BUFFER_SIZE = 8192;
public static final int DEFAULT_MIN_COMPRESS_SIZE = 256;
private Set _mimeTypes;
private int _bufferSize=DEFAULT_BUFFER_SIZE;
private int _minCompressSize=DEFAULT_MIN_COMPRESS_SIZE;
protected HttpServletRequest _request;
private PrintWriter _writer;
private AbstractCompressedStream _compressedStream;
private String _etag;
private long _contentLength=-1;
private boolean _noCompression;
/* ------------------------------------------------------------ */
public CompressedResponseWrapper(HttpServletRequest request, HttpServletResponse response)
{
super(response);
_request = request;
}
/* ------------------------------------------------------------ */
public long getContentLength()
{
return _contentLength;
}
/* ------------------------------------------------------------ */
public int getBufferSize()
{
return _bufferSize;
}
/* ------------------------------------------------------------ */
public int getMinCompressSize()
{
return _minCompressSize;
}
/* ------------------------------------------------------------ */
public String getETag()
{
return _etag;
}
/* ------------------------------------------------------------ */
public HttpServletRequest getRequest()
{
return _request;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setMimeTypes(java.util.Set)
*/
public void setMimeTypes(Set mimeTypes)
{
_mimeTypes = mimeTypes;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setBufferSize(int)
*/
@Override
public void setBufferSize(int bufferSize)
{
_bufferSize = bufferSize;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setMinCompressSize(int)
*/
public void setMinCompressSize(int minCompressSize)
{
_minCompressSize = minCompressSize;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setContentType(java.lang.String)
*/
@Override
public void setContentType(String ct)
{
super.setContentType(ct);
if (ct!=null)
{
int colon=ct.indexOf(";");
if (colon>0)
ct=ct.substring(0,colon);
}
if ((_compressedStream==null || _compressedStream.getOutputStream()==null) &&
(_mimeTypes==null && ct!=null && ct.contains("gzip") ||
_mimeTypes!=null && (ct==null||!_mimeTypes.contains(StringUtil.asciiToLowerCase(ct)))))
{
noCompression();
}
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setStatus(int, java.lang.String)
*/
@Override
public void setStatus(int sc, String sm)
{
super.setStatus(sc,sm);
if (sc<200 || sc==204 || sc==205 || sc>=300)
noCompression();
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setStatus(int)
*/
@Override
public void setStatus(int sc)
{
super.setStatus(sc);
if (sc<200 || sc==204 || sc==205 || sc>=300)
noCompression();
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.servlets.gzip.CompressedResponseWrapper#setContentLength(int)
*/
@Override
public void setContentLength(int length)
{
setContentLength((long)length);
}
/* ------------------------------------------------------------ */
protected void setContentLength(long length)
{
_contentLength=length;
if (_compressedStream!=null)
_compressedStream.setContentLength();
else if (_noCompression && _contentLength>=0)
{
HttpServletResponse response = (HttpServletResponse)getResponse();
if(_contentLength