json stuff

src/main/java/org/json/simple/JSONObject.java

@@ -0,0 +1,129 @@
+/*
+ * $Id: JSONObject.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.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * A JSON object. Key value pairs are unordered. JSONObject supports java.util.Map interface.
+ * 
+ * @author FangYidong<fangyidong@yahoo.com.cn>
+ */
+public class JSONObject extends HashMap implements Map, JSONAware, JSONStreamAware{
+	private static final long serialVersionUID = -503443796854799292L;
+
+    /**
+     * Encode a map into JSON text and write it to out.
+     * If this map is also a JSONAware or JSONStreamAware, JSONAware or JSONStreamAware specific behaviours will be ignored at this top level.
+     * 
+     * @see org.json.simple.JSONValue#writeJSONString(Object, Writer)
+     * 
+     * @param map
+     * @param out
+     */
+	public static void writeJSONString(Map map, Writer out) throws IOException {
+		if(map == null){
+			out.write("null");
+			return;
+		}
+		
+		boolean first = true;
+		Iterator iter=map.entrySet().iterator();
+		
+        out.write('{');
+		while(iter.hasNext()){
+            if(first)
+                first = false;
+            else
+                out.write(',');
+			Map.Entry entry=(Map.Entry)iter.next();
+            out.write('\"');
+            out.write(escape(String.valueOf(entry.getKey())));
+            out.write('\"');
+            out.write(':');
+			JSONValue.writeJSONString(entry.getValue(), out);
+		}
+		out.write('}');
+	}
+
+	public void writeJSONString(Writer out) throws IOException{
+		writeJSONString(this, out);
+	}
+	
+	/**
+	 * Convert a map to JSON text. The result is a JSON object. 
+	 * If this map is also a JSONAware, JSONAware specific behaviours will be omitted at this top level.
+	 * 
+	 * @see org.json.simple.JSONValue#toJSONString(Object)
+	 * 
+	 * @param map
+	 * @return JSON text, or "null" if map is null.
+	 */
+	public static String toJSONString(Map map){
+		if(map == null)
+			return "null";
+		
+        StringBuffer sb = new StringBuffer();
+        boolean first = true;
+		Iterator iter=map.entrySet().iterator();
+		
+        sb.append('{');
+		while(iter.hasNext()){
+            if(first)
+                first = false;
+            else
+                sb.append(',');
+            
+			Map.Entry entry=(Map.Entry)iter.next();
+			toJSONString(String.valueOf(entry.getKey()),entry.getValue(), sb);
+		}
+        sb.append('}');
+		return sb.toString();
+	}
+	
+	public String toJSONString(){
+		return toJSONString(this);
+	}
+	
+	private static String toJSONString(String key,Object value, StringBuffer sb){
+		sb.append('\"');
+        if(key == null)
+            sb.append("null");
+        else
+            JSONValue.escape(key, sb);
+		sb.append('\"').append(':');
+		
+		sb.append(JSONValue.toJSONString(value));
+		
+		return sb.toString();
+	}
+	
+	public String toString(){
+		return toJSONString();
+	}
+
+	public static String toString(String key,Object value){
+        StringBuffer sb = new StringBuffer();
+		toJSONString(key, value, sb);
+        return sb.toString();
+	}
+	
+	/**
+	 * Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters (U+0000 through U+001F).
+	 * It's the same as JSONValue.escape() only for compatibility here.
+	 * 
+	 * @see org.json.simple.JSONValue#escape(String)
+	 * 
+	 * @param s
+	 * @return
+	 */
+	public static String escape(String s){
+		return JSONValue.escape(s);
+	}
+}