android下解析.plist配置檔案的xml解析器

package com.founder.suzhou.ar.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 * .plist配置檔案的解析器
 * 支援array
 * <plist version="1.0">
 *   <array>
 *     <dict>
 *       ...
 *     </dict>
 *     ...
 *   </array>
 * </plist version="1.0">
 * 
 * 支援Map
 * <plist version="1.0">
 * <dict>
 *   <id>key</id>
 *   <array>
 *     <dict>
 *       ...
 *     </dict>
 *     ...
 *   </array>
 *   ...
 * </dict>  
 * </plist version="1.0">
 * 
 * @author chen_weihua
 *
 */
public class PlistHandler extends DefaultHandler {
	private LinkedList<Object> list = new LinkedList<Object>();
	
	private boolean isRootElement = false;
	
	private boolean keyElementBegin = false;
	
	private String key;
	
	private StringBuffer value = new StringBuffer();
	
	private boolean valueElementBegin = false;
	
	private Object root;
	
	@SuppressWarnings("unchecked")
	public Map getMapResult() {
		return (Map)root;
	}
	
	@SuppressWarnings("unchecked")
	public List getArrayResult() {
		return (List)root;
	}
	
	@SuppressWarnings("unchecked")
	@Override
	public void startElement(String uri, String localName, String qName,
			Attributes attributes) throws SAXException {
		value = new StringBuffer();
		if ("plist".equals(localName)) {
			isRootElement = true;
		}
		if ("dict".equals(localName)) {
			if (isRootElement) {
				list.addFirst(new HashMap());
				isRootElement = !isRootElement;
			} else {
				ArrayList parent = (ArrayList)list.get(0);
				list.addFirst(new HashMap());
				parent.add(list.get(0));
			}
		}
		
		if ("key".equals(localName)) {
			keyElementBegin = true;
		}
		if ("true".equals(localName)) {
			HashMap parent = (HashMap)list.get(0);
			parent.put(key, true);
		}
		if ("false".equals(localName)) {
			HashMap parent = (HashMap)list.get(0);
			parent.put(key, false);
		}
		if ("array".equals(localName)) {
			if (isRootElement) {
				ArrayList obj = new ArrayList();
				list.addFirst(obj);
				isRootElement = !isRootElement;
			} else {
				HashMap parent = (HashMap)list.get(0);
				ArrayList obj = new ArrayList();
				list.addFirst(obj);
				parent.put(key, obj);
			}
		}
		if ("string".equals(localName)) {
			valueElementBegin = true;
		}
	}

	//@SuppressWarnings("unchecked")
	@Override
	public void characters(char[] ch, int start, int length)
			throws SAXException {
		if (length > 0) {
			value.append(ch, start, length);
		}
	}

	@Override
	public void endElement(String uri, String localName, String qName)
			throws SAXException {
		if (keyElementBegin) {
			key = value.toString();
			//Log.d("AR native", "key:" + key);
		}
		if (valueElementBegin) {
			
			if (HashMap.class.equals(list.get(0).getClass())) {
				HashMap parent = (HashMap)list.get(0);
				parent.put(key, value.toString());
			} else if (ArrayList.class.equals(list.get(0).getClass())) {
				ArrayList parent = (ArrayList)list.get(0);
				parent.add(value.toString());
			}
			//Log.d("AR native", "value:" + value);
		}
		
		
		
		
		if ("plist".equals(localName)) {
			;
		}
		if ("key".equals(localName)) {
			keyElementBegin = false;
		}
		if ("string".equals(localName)) {
			valueElementBegin = false;
		}
		if ("array".equals(localName)) {
			root = list.removeFirst();
		}
		if ("dict".equals(localName)) {
			root = list.removeFirst();
		}
	}
}