SBJsonParser.java

/*
 * Copyright (C) 2012 Wu Tong
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.cocoa4android.util.sbjson;

import java.util.Iterator;

import org.cocoa4android.ns.NSMutableArray;
import org.cocoa4android.ns.NSMutableDictionary;
import org.cocoa4android.ns.NSObject;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class SBJsonParser extends NSObject {
	
	public static Object objectWithString(String repr){
		String content = repr;
		content = content.trim();
		if(content.startsWith("[")){
			//NSArray
			return SBJsonParser.parseArray(content);
		}else if(content.startsWith("{")){
			return SBJsonParser.parseDictionary(content);
		}else if(!content.toLowerCase().equals("null")){
			return repr;
		}
		return null;
	}
	private static NSObject parseArray(String content){
		try {
			JSONArray arJsonArray = new JSONArray(content);
			NSMutableArray array = NSMutableArray.array();
			
			for (int i = 0; i < arJsonArray.length(); i++) {
				String value = arJsonArray.getString(i).trim();
				if(value.startsWith("[")){
					NSObject nsArray = SBJsonParser.parseArray(value);
					array.addObject(nsArray);
				}else if(value.startsWith("{")){
					NSObject nsDictionary = SBJsonParser.parseDictionary(value);
					array.addObject(nsDictionary);
				}else if(!value.toLowerCase().equals("null")){
					array.addObject(value);
				}else{
					array.addObject(null);
				}
			}
			
			return array;
		} catch (JSONException e) {
			e.printStackTrace();
		}
		
		
		return null;
	}
	private static NSObject parseDictionary(String content){
		try {
			JSONObject jsonObject = new JSONObject(content);
			@SuppressWarnings("unchecked")
			Iterator<String> iterator = jsonObject.keys();
			
			NSMutableDictionary dic = NSMutableDictionary.dictionary();
			while (iterator.hasNext()) {
				String key = (String) iterator.next().trim();
				String value = jsonObject.getString(key).trim();
				
				if(value.startsWith("[")){
					NSObject array = SBJsonParser.parseArray(value);
					dic.setObject(array, key);
				}else if(value.startsWith("{")){
					NSObject object = SBJsonParser.parseDictionary(value);
					dic.setObject(object, key);
				}else if(!value.toLowerCase().equals("null")){
					dic.setObject(value, key);
				}else{
					dic.setObject(null, key);
				}
			}
			return dic;
		} catch (JSONException e) {
			e.printStackTrace();
		}
		
		return null;
	}
}