001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.vfs;
030:
031: import com.caucho.util.ByteBuffer;
032:
033: import java.io.IOException;
034: import java.io.UnsupportedEncodingException;
035:
036: /**
037: * Utility class for converting a byte stream to a character stream.
038: *
039: * <pre>
040: * ByteToChar converter = new ByteToChar();
041: * converter.setEncoding("utf-8");
042: * converter.clear();
043: *
044: * converter.addChar('H');
045: * converter.addByte(0xc0);
046: * converter.addByte(0xb8);
047: *
048: * String value = converter.getConvertedString();
049: * </pre>
050: */
051: public final class OldByteToChar extends ByteToChar {
052: private ByteBuffer bb;
053: private String javaEncoding;
054:
055: /**
056: * Creates an uninitialized converter. Use <code>init</code> to initialize.
057: */
058: OldByteToChar() {
059: bb = new ByteBuffer();
060: }
061:
062: /**
063: * Sets the encoding for the converter.
064: */
065: public void setEncoding(String encoding)
066: throws UnsupportedEncodingException {
067: javaEncoding = Encoding.getJavaName(encoding);
068: }
069:
070: /**
071: * Clears the converted
072: */
073: public void clear() {
074: bb.clear();
075: }
076:
077: /**
078: * Gets the converted string.
079: */
080: public String getConvertedString() throws IOException {
081: return bb.toString(javaEncoding);
082: }
083:
084: /**
085: * Adds the next byte.
086: *
087: * @param b the byte to write
088: */
089: public void addByte(int b) throws IOException {
090: bb.add(b);
091: }
092:
093: /**
094: * Adds the next character.
095: *
096: * @param nextCh the character to write
097: */
098: public void addChar(char nextCh) throws IOException {
099: // The oldByteToChar doesn't handle this case
100: bb.add((byte) nextCh);
101: }
102:
103: /**
104: * Prints the object.
105: */
106: public String toString() {
107: return "[OldByteToChar " + javaEncoding + "]";
108: }
109: }
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