01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * 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.i18n;
30:
31: import java.io.IOException;
32: import java.io.InputStream;
33: import java.io.Reader;
34:
35: /**
36: * Implements an encoding reader for the Java (ascii) encoding
37: */
38: public class JAVAReader extends EncodingReader {
39: private InputStream _is;
40:
41: /**
42: * Null-arg constructor for instantiation by com.caucho.vfs.Encoding only.
43: */
44: public JAVAReader() {
45: }
46:
47: /**
48: * Create an ISO-8859-1 reader based on the readStream.
49: */
50: public JAVAReader(InputStream is) {
51: _is = is;
52: }
53:
54: /**
55: * Create a ISO-8859-1 reader based on the readStream.
56: *
57: * @param is the input stream providing the bytes.
58: * @param javaEncoding the JDK name for the encoding.
59: *
60: * @return null, since ReadStream handles this directly.
61: */
62: public Reader create(InputStream is, String javaEncoding) {
63: return null;
64: }
65:
66: /**
67: * Reads the next character.
68: */
69: public int read() throws IOException {
70: return _is.read();
71: }
72:
73: /**
74: * Reads the next character.
75: */
76: public int read(char[] buf, int offset, int length)
77: throws IOException {
78: for (int i = 0; i < length; i++) {
79: int ch = _is.read();
80:
81: if (ch < 0)
82: return i > 0 ? i : -1;
83: else {
84: buf[offset + i] = (char) ch;
85: }
86: }
87:
88: return length;
89: }
90: }
|