Coverage Report - net.sourceforge.pebble.web.filter.GZIPResponseStream
 
Classes in this File Line Coverage Branch Coverage Complexity
GZIPResponseStream
0%
0/39
0%
0/8
2.333
 
 1  
 /*
 2  
  * Copyright (c) 2003-2011, Simon Brown
 3  
  * All rights reserved.
 4  
  *
 5  
  * Redistribution and use in source and binary forms, with or without
 6  
  * modification, are permitted provided that the following conditions are met:
 7  
  *
 8  
  *   - Redistributions of source code must retain the above copyright
 9  
  *     notice, this list of conditions and the following disclaimer.
 10  
  *
 11  
  *   - Redistributions in binary form must reproduce the above copyright
 12  
  *     notice, this list of conditions and the following disclaimer in
 13  
  *     the documentation and/or other materials provided with the
 14  
  *     distribution.
 15  
  *
 16  
  *   - Neither the name of Pebble nor the names of its contributors may
 17  
  *     be used to endorse or promote products derived from this software
 18  
  *     without specific prior written permission.
 19  
  *
 20  
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 21  
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 22  
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 23  
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 24  
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 25  
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 26  
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 27  
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 28  
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 29  
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 30  
  * POSSIBILITY OF SUCH DAMAGE.
 31  
  */
 32  
 package net.sourceforge.pebble.web.filter;
 33  
 
 34  
 import java.io.*;
 35  
 import java.util.zip.GZIPOutputStream;
 36  
 import javax.servlet.*;
 37  
 import javax.servlet.http.*;
 38  
 
 39  
 public class GZIPResponseStream extends ServletOutputStream {
 40  
 
 41  0
   protected ByteArrayOutputStream baos = null;
 42  0
   protected GZIPOutputStream gzipstream = null;
 43  0
   protected boolean closed = false;
 44  0
   protected HttpServletResponse response = null;
 45  0
   protected ServletOutputStream output = null;
 46  
 
 47  0
   public GZIPResponseStream(HttpServletResponse response) throws IOException {
 48  0
     closed = false;
 49  0
     this.response = response;
 50  0
     this.output = response.getOutputStream();
 51  0
     baos = new ByteArrayOutputStream();
 52  0
     gzipstream = new GZIPOutputStream(baos);
 53  0
   }
 54  
 
 55  
   public void close() throws IOException {
 56  0
     if (closed) {
 57  0
       throw new IOException("This output stream has already been closed");
 58  
     }
 59  0
     gzipstream.finish();
 60  0
     gzipstream.flush();
 61  0
     gzipstream.close();
 62  
 
 63  0
     byte[] bytes = baos.toByteArray();
 64  0
     response.setContentLength(bytes.length);
 65  0
     response.addHeader("Content-Encoding", "gzip");
 66  0
     output.write(bytes);
 67  0
     output.flush();
 68  0
     output.close();
 69  0
     closed = true;
 70  0
   }
 71  
 
 72  
   public void flush() throws IOException {
 73  0
     if (closed) {
 74  0
       throw new IOException("Cannot flush a closed output stream");
 75  
     }
 76  0
     gzipstream.flush();
 77  0
   }
 78  
 
 79  
   public void write(int b) throws IOException {
 80  0
     if (closed) {
 81  0
       throw new IOException("Cannot write to a closed output stream");
 82  
     }
 83  0
     gzipstream.write((byte) b);
 84  0
   }
 85  
 
 86  
   public void write(byte b[]) throws IOException {
 87  0
     write(b, 0, b.length);
 88  0
   }
 89  
 
 90  
   public void write(byte b[], int off, int len) throws IOException {
 91  0
     if (closed) {
 92  0
       throw new IOException("Cannot write to a closed output stream");
 93  
     }
 94  0
     gzipstream.write(b, off, len);
 95  0
   }
 96  
 }