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;
30:
31: import com.caucho.util.CharBuffer;
32:
33: import java.io.IOException;
34:
35: /**
36: * Utility class for converting a byte stream to a character stream.
37: *
38: * <pre>
39: * ByteToChar converter = new ByteToChar();
40: * converter.setEncoding("utf-8");
41: * converter.clear();
42: *
43: * converter.addChar('H');
44: * converter.addByte(0xc0);
45: * converter.addByte(0xb8);
46: *
47: * String value = converter.getConvertedString();
48: * </pre>
49: */
50: public class ByteToChar extends AbstractByteToChar {
51: private CharBuffer _charBuffer;
52:
53: /**
54: * Creates an uninitialized converter. Use <code>init</code> to initialize.
55: */
56: ByteToChar() {
57: _charBuffer = new CharBuffer();
58: }
59:
60: public static ByteToChar create() {
61: return new ByteToChar();
62: }
63:
64: /**
65: * Clears the converted
66: */
67: public void clear() {
68: super .clear();
69:
70: _charBuffer.clear();
71: }
72:
73: /**
74: * Gets the converted string.
75: */
76: public String getConvertedString() throws IOException {
77: flush();
78:
79: return _charBuffer.toString();
80: }
81:
82: protected void outputChar(int ch) {
83: _charBuffer.append((char) ch);
84: }
85:
86: /**
87: * Prints the object.
88: */
89: public String toString() {
90: try {
91: return getConvertedString();
92: } catch (IOException e) {
93: throw new RuntimeException(String.valueOf(e));
94: }
95: }
96: }
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