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Java > Open Source Codes > com > quadcap > io > AsciiReader


1 package com.quadcap.io;
2
3 /* Copyright 1997 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.io.IOException JavaDoc;
42 import java.io.InputStream JavaDoc;
43 import java.io.Reader JavaDoc;
44
45 /**
46  * This class is an adaptor class that can be used to convert an input
47  * stream that contains ASCII bytes into a reader that returns
48  * those bytes as Unicode characters.
49  *
50  * @author Stan Bailes
51  */
52 public class AsciiReader extends Reader JavaDoc {
53     InputStream JavaDoc in;
54
55     public AsciiReader(InputStream JavaDoc in) {
56     this.in = in;
57     }
58
59     public void close() throws IOException JavaDoc {
60     in.close();
61     }
62
63     public int read() throws IOException JavaDoc {
64     return in.read();
65     }
66
67     public int read(char[] cbuf) throws IOException JavaDoc {
68     for (int i = 0; i < cbuf.length; i++) {
69         int c = read();
70         if (c < 0) return i;
71         cbuf[i] = (char)c;
72     }
73     return cbuf.length;
74     }
75     
76     public int read(char[] cbuf, int off, int len) throws IOException JavaDoc {
77     for (int i = 0; i < len; i++) {
78         int c = read();
79         if (c < 0) return i;
80         cbuf[off + i] = (char)c;
81     }
82     return len;
83     }
84 }
85
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