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Java > Open Source Codes > com > caucho > jsp > JspServletOutputStream


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.jsp;
31
32 import javax.servlet.ServletOutputStream JavaDoc;
33 import java.io.IOException JavaDoc;
34 import java.io.OutputStream JavaDoc;
35
36 class JspServletOutputStream extends ServletOutputStream JavaDoc {
37   private PageContextImpl _pageContext;
38   private OutputStream JavaDoc _os;
39
40   JspServletOutputStream(PageContextImpl pageContext)
41   {
42     _pageContext = pageContext;
43   }
44
45   public final void write(int b) throws IOException JavaDoc
46   {
47     getOutputStream().write(b);
48   }
49
50   public final void write(byte []buf, int offset, int len) throws IOException JavaDoc
51   {
52     getOutputStream().write(buf, offset, len);
53   }
54
55   public final void flush() throws IOException JavaDoc
56   {
57     if (_os != null)
58       _os.flush();
59   }
60
61   public final void close() throws IOException JavaDoc
62   {
63   }
64
65   /**
66    * Returns the output stream.
67    */
68   private OutputStream JavaDoc getOutputStream()
69   {
70     if (_os == null) {
71       _os = _pageContext.getOutputStream();
72     }
73
74     return _os;
75   }
76
77   void release()
78   {
79     _os = null;
80   }
81 }
82
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