ExposedBufferedInputStream


1   package org.jgroups.util;
2   
3   import org.apache.commons.logging.Log;
4   import org.apache.commons.logging.LogFactory;
5   
6   import java.io.BufferedInputStream  ;
7   import java.io.InputStream  ;
8   
9   /**
10   * @author Bela Ban
11   * @version $Id: ExposedBufferedInputStream.java,v 1.3 2005/07/25 16:57:31 belaban Exp $
12   */
13  public class ExposedBufferedInputStream extends BufferedInputStream   {
14      private final static Log log=LogFactory.getLog(ExposedBufferedInputStream.class);
15      /**
16       * Creates a <code>BufferedInputStream</code>
17       * and saves its  argument, the input stream
18       * <code>in</code>, for later use. An internal
19       * buffer array is created and  stored in <code>buf</code>.
20       *
21       * @param in the underlying input stream.
22       */
23      public ExposedBufferedInputStream(InputStream   in) {
24          super(in);
25      }
26  
27      /**
28       * Creates a <code>BufferedInputStream</code>
29       * with the specified buffer size,
30       * and saves its  argument, the input stream
31       * <code>in</code>, for later use.  An internal
32       * buffer array of length  <code>size</code>
33       * is created and stored in <code>buf</code>.
34       *
35       * @param in   the underlying input stream.
36       * @param size the buffer size.
37       * @throws IllegalArgumentException if size <= 0.
38       */
39      public ExposedBufferedInputStream(InputStream   in, int size) {
40          super(in, size);
41      }
42  
43      public void reset(int size) {
44          count=pos=marklimit=0;
45          markpos=-1;
46          if(buf != null) {
47              if(size > buf.length) {
48                  buf=new byte[size];
49              }
50          }
51          else {
52              buf=new byte[4096];
53              if(log.isWarnEnabled())
54                  log.warn("output stream was closed, re-creating it (please don't close it)");
55          }
56      }
57  }
58
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