/*
* $Id: JSONObject.java,v 1.1 2007/06/05 00:43:56 tuxpaper Exp $
* Created on 2006-4-10
*/
package org.json.simple;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* @author FangYidong<fangyidong@yahoo.com.cn>
*/
public class JSONObject extends HashMap{
public JSONObject() {
super();
}
public JSONObject(int initialCapacity, float loadFactor) {
super(initialCapacity, loadFactor);
}
public JSONObject(int initialCapacity) {
super(initialCapacity);
}
public JSONObject(Map arg0) {
super(arg0);
}
public String toString(){
ItemList list=new ItemList();
Iterator iter=entrySet().iterator();
while(iter.hasNext()){
Map.Entry entry=(Map.Entry)iter.next();
list.add(toString(entry.getKey().toString(),entry.getValue()));
}
return "{"+list.toString()+"}";
}
public static String toString(String key,Object value){
StringBuffer sb=new StringBuffer();
sb.append("\"");
sb.append(escape(key));
sb.append("\":");
if(value==null){
sb.append("null");
return sb.toString();
}
if(value instanceof String){
sb.append("\"");
sb.append(escape((String)value));
sb.append("\"");
}
else
sb.append(value);
return sb.toString();
}
/**
* " => \" , \ => \\
* @param s
* @return
*/
public static String escape(String s){
if(s==null)
return null;
StringBuffer sb=new StringBuffer();
for(int i=0;i<s.length();i++){
char ch=s.charAt(i);
switch(ch){
case '"':
sb.append("\\\"");
break;
case '\\':
sb.append("\\\\");
break;
case '\b':
sb.append("\\b");
break;
case '\f':
sb.append("\\f");
break;
case '\n':
sb.append("\\n");
break;
case '\r':
sb.append("\\r");
break;
case '\t':
sb.append("\\t");
break;
case '/':
sb.append("\\/");
break;
default:
if(ch>='\u0000' && ch<='\u001F'){
String ss=Integer.toHexString(ch);
sb.append("\\u");
for(int k=0;k<4-ss.length();k++){
sb.append('0');
}
sb.append(ss.toUpperCase());
}
else{
sb.append(ch);
}
}
}//for
return sb.toString();
}
}
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