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/*
* $Id: JSONArray.java,v 1.1 2006/04/15 14:10:48 platform Exp $
* Created on 2006-4-10
*/
package org.json.simple;
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* A JSON array. JSONObject supports java.util.List interface.
*
* @author FangYidong<fangyidong@yahoo.com.cn>
*/
public class JSONArray extends ArrayList implements List, JSONAware, JSONStreamAware {
private static final long serialVersionUID = 3957988303675231981L;
/**
* Encode a list into JSON text and write it to out.
* If this list is also a JSONStreamAware or a JSONAware, JSONStreamAware and JSONAware specific behaviours will be ignored at this top level.
*
* @see org.json.simple.JSONValue#writeJSONString(Object, Writer)
*
* @param list
* @param out
*/
public static void writeJSONString(List list, Writer out) throws IOException{
if(list == null){
out.write("null");
return;
}
boolean first = true;
Iterator iter=list.iterator();
out.write('[');
while(iter.hasNext()){
if(first)
first = false;
else
out.write(',');
Object value=iter.next();
if(value == null){
out.write("null");
continue;
}
JSONValue.writeJSONString(value, out);
}
out.write(']');
}
public void writeJSONString(Writer out) throws IOException{
writeJSONString(this, out);
}
/**
* Convert a list to JSON text. The result is a JSON array.
* If this list is also a JSONAware, JSONAware specific behaviours will be omitted at this top level.
*
* @see org.json.simple.JSONValue#toJSONString(Object)
*
* @param list
* @return JSON text, or "null" if list is null.
*/
public static String toJSONString(List list){
if(list == null)
return "null";
boolean first = true;
StringBuffer sb = new StringBuffer();
Iterator iter=list.iterator();
sb.append('[');
while(iter.hasNext()){
if(first)
first = false;
else
sb.append(',');
Object value=iter.next();
if(value == null){
sb.append("null");
continue;
}
sb.append(JSONValue.toJSONString(value));
}
sb.append(']');
return sb.toString();
}
public String toJSONString(){
return toJSONString(this);
}
public String toString() {
return toJSONString();
}
}
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