001 /*
002 GRANITE DATA SERVICES
003 Copyright (C) 2013 GRANITE DATA SERVICES S.A.S.
004
005 This file is part of Granite Data Services.
006
007 Granite Data Services is free software; you can redistribute it and/or modify
008 it under the terms of the GNU Library General Public License as published by
009 the Free Software Foundation; either version 2 of the License, or (at your
010 option) any later version.
011
012 Granite Data Services is distributed in the hope that it will be useful, but
013 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015 for more details.
016
017 You should have received a copy of the GNU Library General Public License
018 along with this library; if not, see <http://www.gnu.org/licenses/>.
019 */
020
021 package org.granite.messaging.jmf.codec.std.impl;
022
023 import java.io.IOException;
024 import java.io.OutputStream;
025
026 import org.granite.messaging.jmf.DumpContext;
027 import org.granite.messaging.jmf.InputContext;
028 import org.granite.messaging.jmf.OutputContext;
029 import org.granite.messaging.jmf.codec.std.CharacterCodec;
030
031 /**
032 * @author Franck WOLFF
033 */
034 public class CharacterCodecImpl extends AbstractStandardCodec<Character> implements CharacterCodec {
035
036 public int getObjectType() {
037 return JMF_CHARACTER_OBJECT;
038 }
039
040 public Class<?> getObjectClass() {
041 return Character.class;
042 }
043
044 public int getPrimitiveType() {
045 return JMF_CHARACTER;
046 }
047
048 public Class<?> getPrimitiveClass() {
049 return Character.TYPE;
050 }
051
052 public void encode(OutputContext ctx, Character v) throws IOException {
053 writeCharData(ctx, JMF_CHARACTER_OBJECT, v.charValue());
054 }
055
056 public Character decode(InputContext ctx, int parameterizedJmfType) throws IOException {
057 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
058 if (jmfType != JMF_CHARACTER_OBJECT)
059 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
060 return Character.valueOf(readCharData(ctx, parameterizedJmfType));
061 }
062
063 public void encodePrimitive(OutputContext ctx, int v) throws IOException {
064 writeCharData(ctx, JMF_CHARACTER, v);
065 }
066
067 public char decodePrimitive(InputContext ctx) throws IOException {
068 int parameterizedJmfType = ctx.safeRead();
069 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
070
071 if (jmfType != JMF_CHARACTER)
072 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
073
074 return readCharData(ctx, parameterizedJmfType);
075 }
076
077 public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
078 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
079
080 switch (jmfType) {
081 case JMF_CHARACTER:
082 ctx.indentPrintLn("char: '" + escape(readCharData(ctx, parameterizedJmfType)) + "'");
083 break;
084 case JMF_CHARACTER_OBJECT:
085 ctx.indentPrintLn(Character.class.getName() + ": '" + escape(readCharData(ctx, parameterizedJmfType)) + "'");
086 break;
087 default:
088 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
089 }
090 }
091
092 protected void writeCharData(OutputContext ctx, int jmfType, int v) throws IOException {
093 final OutputStream os = ctx.getOutputStream();
094
095 if (v <= 0x00FF) {
096 os.write(jmfType);
097 os.write(v);
098 }
099 else {
100 os.write(0x80 | jmfType);
101 os.write(v >> 8);
102 os.write(v);
103 }
104 }
105
106 protected char readCharData(InputContext ctx, int parameterizedJmfType) throws IOException {
107 char v = (char)ctx.safeRead();
108
109 if ((parameterizedJmfType & 0x80) != 0)
110 v = (char)((v << 8) | ctx.safeRead());
111
112 return v;
113 }
114 }