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.InputStreamReader;
34: import java.io.Reader;
35: import java.io.UnsupportedEncodingException;
36: import java.nio.charset.Charset;
37:
38: /**
39: * Reader to handle any encoding by passing it to the JDK.
40: */
41: public class JDKReader extends EncodingReader {
42: /**
43: * Null-arg constructor for instantiation by com.caucho.vfs.Encoding only.
44: */
45: public JDKReader() {
46: }
47:
48: /**
49: * Create a JDK-based reader.
50: *
51: * @param is the input stream providing the bytes.
52: * @param javaEncoding the JDK name for the encoding.
53: *
54: * @return an InputStreamReader
55: */
56: public Reader create(InputStream is, String javaEncoding)
57: throws UnsupportedEncodingException {
58: if (Charset.isSupported(javaEncoding)) {
59: Charset charset = Charset.forName(javaEncoding);
60:
61: return new InputStreamReader(is, charset);
62: } else {
63: // RSN-274, Charset doesn't support all java.io encoding
64: return new InputStreamReader(is, javaEncoding);
65: }
66: }
67:
68: /**
69: * Reads into a character buffer using the correct encoding.
70: */
71: public int read() throws IOException {
72: throw new UnsupportedOperationException();
73: }
74: }
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