001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.messaging.jmf.codec.std.impl;
023
024import java.io.IOException;
025import java.io.OutputStream;
026
027import org.granite.messaging.jmf.DumpContext;
028import org.granite.messaging.jmf.InputContext;
029import org.granite.messaging.jmf.OutputContext;
030import org.granite.messaging.jmf.codec.std.CharacterCodec;
031
032/**
033 * @author Franck WOLFF
034 */
035public class CharacterCodecImpl extends AbstractStandardCodec<Character> implements CharacterCodec {
036
037        public int getObjectType() {
038                return JMF_CHARACTER_OBJECT;
039        }
040
041        public Class<?> getObjectClass() {
042                return Character.class;
043        }
044
045        public int getPrimitiveType() {
046                return JMF_CHARACTER;
047        }
048
049        public Class<?> getPrimitiveClass() {
050                return Character.TYPE;
051        }
052
053        public void encode(OutputContext ctx, Character v) throws IOException {
054                writeCharData(ctx, JMF_CHARACTER_OBJECT, v.charValue());
055        }
056        
057        public Character decode(InputContext ctx, int parameterizedJmfType) throws IOException {
058                int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
059                if (jmfType != JMF_CHARACTER_OBJECT)
060                        throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
061                return Character.valueOf(readCharData(ctx, parameterizedJmfType));
062        }
063
064        public void encodePrimitive(OutputContext ctx, int v) throws IOException {
065                writeCharData(ctx, JMF_CHARACTER, v);
066        }
067        
068        public char decodePrimitive(InputContext ctx) throws IOException {
069                int parameterizedJmfType = ctx.safeRead();
070                int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
071                
072                if (jmfType != JMF_CHARACTER)
073                        throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
074                
075                return readCharData(ctx, parameterizedJmfType);
076        }
077        
078        public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
079                int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
080                
081                switch (jmfType) {
082                case JMF_CHARACTER:
083                        ctx.indentPrintLn("char: '" + escape(readCharData(ctx, parameterizedJmfType)) + "'");
084                        break;
085                case JMF_CHARACTER_OBJECT:
086                        ctx.indentPrintLn(Character.class.getName() + ": '" + escape(readCharData(ctx, parameterizedJmfType)) + "'");
087                        break;
088                default:
089                        throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
090                }
091        }
092        
093        protected void writeCharData(OutputContext ctx, int jmfType, int v) throws IOException {
094                final OutputStream os = ctx.getOutputStream();
095                
096                if (v <= 0x00FF) {
097                        os.write(jmfType);
098                        os.write(v);
099                }
100                else {  
101                        os.write(0x80 | jmfType);
102                        os.write(v >> 8);
103                        os.write(v);
104                }
105        }
106        
107        protected char readCharData(InputContext ctx, int parameterizedJmfType) throws IOException {
108                char v = (char)ctx.safeRead();
109                
110                if ((parameterizedJmfType & 0x80) != 0)
111                        v = (char)((v << 8) | ctx.safeRead());
112                
113                return v;
114        }
115}