OutputStreamSwitcher


1   /**
2    * Copyright (C) 2004 France Telecom R&D
3    *
4    * This library is free software; you can redistribute it and/or
5    * modify it under the terms of the GNU Lesser General Public
6    * License as published by the Free Software Foundation; either
7    * version 2 of the License, or (at your option) any later version.
8    *
9    * This library is distributed in the hope that it will be useful,
10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   * Lesser General Public License for more details.
13   *
14   * You should have received a copy of the GNU Lesser General Public
15   * License along with this library; if not, write to the Free Software
16   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17   */
18  package org.objectweb.util.monolog.wrapper.common;
19  
20  import java.io.OutputStream  ;
21  import java.io.IOException  ;
22  
23  /**
24   * This Outstream implementation permits to switch the outStream at any time.
25   * It is interesting to switch between System.out and System.err dependeing on
26   * the message level.
27   *
28   * @author S.Chassande-Barrioz
29   */
30  public class OutputStreamSwitcher extends OutputStream   {
31  
32      protected OutputStream   currentOut;
33  
34      public OutputStreamSwitcher() {
35          currentOut = System.out;
36      }
37  
38      public OutputStreamSwitcher(OutputStream   defaultOut) {
39          this.currentOut = defaultOut;
40      }
41  
42      public void switchOutput(OutputStream   newOut) {
43          currentOut = newOut;
44      }
45  
46      public void write(byte b[]) throws IOException   {
47          currentOut.write(b);
48      }
49  
50      public void write(byte b[], int off, int len) throws IOException   {
51          currentOut.write(b, off, len);
52      }
53  
54      public void write(int b) throws IOException   {
55          currentOut.write(b);
56      }
57  
58      public void flush() throws IOException   {
59          currentOut.flush();
60      }
61  
62      public void close() throws IOException   {
63      }
64  }
65
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