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 org.granite.messaging.jmf.JMFEncodingException;
025import org.granite.messaging.jmf.codec.StandardCodec;
026
027/**
028 * @author Franck WOLFF
029 */
030public abstract class AbstractStandardCodec<T> implements StandardCodec<T> {
031        
032        protected JMFEncodingException newBadTypeJMFEncodingException(int jmfType, int parameterizedJmfType) {
033                return new JMFEncodingException(
034                        "Bad JMF type for " + getClass().getName() + ": " + jmfType +
035                        " (parameterized: " + parameterizedJmfType + ")"
036                );
037        }
038        
039        protected String escape(String s) {
040                if (s == null || s.length() == 0)
041                        return s;
042                
043                StringBuilder sb = new StringBuilder(s.length());
044                
045                final int max = s.length();
046                for (int i = 0; i < max; i++) {
047                        char c = s.charAt(i);
048                        escape(c, sb);
049                }
050                
051                return sb.toString();
052        }
053        
054        protected String escape(char c) {
055                StringBuilder sb = new StringBuilder(6);
056                escape(c, sb);
057                return sb.toString();
058        }
059        
060        protected void escape(char c, StringBuilder sb) {
061                if (c >= 0x20 && c <= 0x7F)
062                        sb.append(c);
063                else {
064                        switch (c) {
065                                case '\n': sb.append("\\n"); break;
066                                case '\t': sb.append("\\t"); break;
067                                case '\r': sb.append("\\r"); break;
068                                case '\'': sb.append("\\\'"); break;
069                                case '\"': sb.append("\\\""); break;
070                                case '\\': sb.append("\\\\"); break;
071                                case '\b': sb.append("\\b"); break;
072                                case '\f': sb.append("\\f"); break;
073                                default: {
074                                        String hex = Integer.toHexString(c);
075                                        switch (hex.length()) {
076                                                case 1: sb.append("\\u000"); break;
077                                                case 2: sb.append("\\u00"); break;
078                                                case 3: sb.append("\\u0"); break;
079                                                default: sb.append("\\u"); break;
080                                        }
081                                        sb.append(hex);
082                                        break;
083                                }
084                        }
085                }
086        }
087}