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.xml.readers;
30:
31: import com.caucho.vfs.ReadStream;
32: import com.caucho.xml.XmlParser;
33:
34: import java.io.IOException;
35:
36: /**
37: * A fast reader to convert bytes to characters for parsing XML.
38: */
39: public class Utf16Reader extends XmlReader {
40: boolean isReverse;
41:
42: /**
43: * Create a new reader.
44: */
45: public Utf16Reader() {
46: }
47:
48: /**
49: * Create a new reader with the given read stream.
50: */
51: public Utf16Reader(XmlParser parser, ReadStream is) {
52: super (parser, is);
53: }
54:
55: public void setReverse(boolean isReverse) {
56: this .isReverse = isReverse;
57: }
58:
59: public boolean getReverse() {
60: return isReverse;
61: }
62:
63: /**
64: * Read the next character, returning -1 on end of file..
65: */
66: public int read() throws IOException {
67: int ch1 = _is.read();
68: int ch2 = _is.read();
69:
70: if (ch2 < 0) {
71: return -1;
72: } else if (isReverse)
73: return (ch2 << 8) + ch1;
74: else
75: return (ch1 << 8) + ch2;
76: }
77: }
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