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


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  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.vfs;
30
31 import java.io.BufferedReader JavaDoc;
32 import java.io.IOException JavaDoc;
33
34   /**
35    * Trivial adapter so readers and input streams can be used in the
36    * same servlet. This adapter also saves GC because it only needs
37    * allocation once.
38    */
39 public class BufferedReaderAdapter extends BufferedReader JavaDoc {
40   private ReadStream rs;
41
42   public BufferedReaderAdapter(ReadStream rs)
43   {
44     // this is only a dummy because the rs.getReader is never actually called
45 super(rs.getReader(), 1);
46   }
47
48   public void init(ReadStream rs)
49   {
50     this.rs = rs;
51   }
52
53   public int read() throws IOException JavaDoc
54   {
55     return rs.readChar();
56   }
57
58   public int read(char []cbuf, int offset, int length) throws IOException JavaDoc
59   {
60     return rs.read(cbuf, offset, length);
61   }
62
63   public String JavaDoc readLine() throws IOException JavaDoc
64   {
65     return rs.readln();
66   }
67
68   public long skip(long n) throws IOException JavaDoc
69   {
70     long count = 0;
71
72     for (; count < n && rs.readChar() >= 0; count++) {
73     }
74
75     return count;
76   }
77
78   public boolean ready() throws IOException JavaDoc
79   {
80     return rs.available() > 0;
81   }
82
83   public void close() throws IOException JavaDoc
84   {
85   }
86 }
87
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