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 com.caucho.vfs.OutputStreamWithBuffer;
32:
33: import java.io.IOException;
34:
35: /**
36: * Implements an encoding char-to-byte writer for UTF16 and the associated
37: * factory.
38: */
39: public class UTF16Writer extends EncodingWriter {
40: private static final UTF16Writer _writer = new UTF16Writer();
41:
42: /**
43: * Null-arg constructor for instantiation by com.caucho.vfs.Encoding only.
44: */
45: public UTF16Writer() {
46: }
47:
48: /**
49: * Create a UTF-16 writer using on the WriteStream to send bytes.
50: *
51: * @param javaEncoding the JDK name for the encoding.
52: *
53: * @return the UTF-16 writer.
54: */
55: public EncodingWriter create(String javaEncoding) {
56: return _writer;
57: }
58:
59: /**
60: * Writes the character using the correct encoding.
61: */
62: public void write(OutputStreamWithBuffer os, char ch)
63: throws IOException {
64: os.write(ch >> 8);
65: os.write(ch);
66: }
67:
68: /**
69: * Writes a character buffer using the UTF-16 encoding.
70: *
71: * @param cbuf character array with the data to write.
72: * @param off starting offset into the character array.
73: * @param len the number of characters to write.
74: */
75: public void write(OutputStreamWithBuffer os, char[] cbuf, int off,
76: int len) throws IOException {
77: for (int i = 0; i < len; i++) {
78: char ch = cbuf[off + i];
79:
80: os.write(ch >> 8);
81: os.write(ch);
82: }
83: }
84: }
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