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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Copyright (C) 2003, 2004 Joe Walnes.
 * Copyright (C) 2006, 2007, 2018 XStream Committers.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 * 
 * Created on 26. September 2003 by Joe Walnes
 */
package com.feilong.lib.xstream.converters.basic;

import com.feilong.lib.xstream.converters.Converter;
import com.feilong.lib.xstream.converters.MarshallingContext;
import com.feilong.lib.xstream.converters.SingleValueConverter;
import com.feilong.lib.xstream.converters.UnmarshallingContext;
import com.feilong.lib.xstream.io.HierarchicalStreamReader;
import com.feilong.lib.xstream.io.HierarchicalStreamWriter;

/**
 * Converts a char primitive or java.lang.Character wrapper to
 * a String. If char is \0 the representing String is empty.
 *
 * @author Joe Walnes
 * @author Jörg Schaible
 */
public class CharConverter implements Converter,SingleValueConverter{

    @Override
    public boolean canConvert(Class type){
        return type == char.class || type == Character.class;
    }

    @Override
    public void marshal(Object source,HierarchicalStreamWriter writer,MarshallingContext context){
        writer.setValue(toString(source));
    }

    @Override
    public Object unmarshal(HierarchicalStreamReader reader,UnmarshallingContext context){
        String nullAttribute = reader.getAttribute("null");
        if (nullAttribute != null && nullAttribute.equals("true")){
            return new Character('\0');
        }else{
            return fromString(reader.getValue());
        }
    }

    @Override
    public Object fromString(String str){
        if (str.length() == 0){
            return new Character('\0');
        }else{
            return new Character(str.charAt(0));
        }
    }

    @Override
    public String toString(Object obj){
        char ch = ((Character) obj).charValue();
        return ch == '\0' ? "" : obj.toString();
    }

}