KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > vfs > StreamImplInputStream


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.vfs;
31
32 import java.io.IOException JavaDoc;
33 import java.io.InputStream JavaDoc;
34
35 /**
36  * Unbuffered input stream to the stream impl
37  */
38 public class StreamImplInputStream extends InputStream JavaDoc {
39   private StreamImpl _stream;
40   private byte []_buf = new byte[1];
41
42   public StreamImplInputStream(StreamImpl stream)
43   {
44     _stream = stream;
45   }
46
47   /**
48    * Writes a byte to the underlying stream.
49    *
50    * @param v the value to write
51    */
52   public int read()
53     throws IOException JavaDoc
54   {
55     int len = _stream.read(_buf, 0, 1);
56
57     if (len == 1)
58       return _buf[0] & 0xff;
59     else
60       return -1;
61   }
62   
63   /**
64    * Reads a buffer to the underlying stream.
65    *
66    * @param buffer the byte array to write.
67    * @param offset the offset into the byte array.
68    * @param length the number of bytes to write.
69    */
70   public int read(byte []buffer, int offset, int length)
71     throws IOException JavaDoc
72   {
73     return _stream.read(buffer, offset, length);
74   }
75
76   /**
77    * Closes the stream.
78    */
79   public void close() throws IOException JavaDoc
80   {
81     _stream.close();
82   }
83 }
84
Popular Tags