package framework.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;

public class PropFile {
	/**
	 * 打开*.properties
	 * 
	 * @param fileName
	 * @return
	 */
	public static PropFile open(String fileName){
		return new PropFile(fileName);
	}
	private PropFile(String fileName) {
		this.fileName = fileName;
		File f = new File(this.fileName);
		if(!f.exists()){
			try {
				FileOutputStream fos = new FileOutputStream(f);
				fos.flush();
				fos.close();
			} catch (Exception e) {
			}
			
		}
	}

	private String fileName;
	
	/**
	 * 读取所有属性
	 * 
	 * @return
	 */
	public Map<String, String> read(){
		Properties p = new Properties();// ���������ļ���ȡ��
		FileInputStream in = null;
		try {
			// propertiesFileName��test.properties
			in = new FileInputStream(fileName);
			p.load(in);
			in.close();// �����˹ر�
			
			Map<String, String> map = new HashMap<String, String>();
			
			Iterator<Object> it = p.keySet().iterator();
			while(it.hasNext()){
				String name = it.next().toString();
				map.put(name, p.getProperty(name, null));
			}
			return map;
		} catch (Throwable e) {

		}finally{
			try{
				in.close();
			}catch(Throwable e){
				
			}
		}
		return null;
	}
	/**
	 * 读取指定属性
	 * 
	 * @param propertyName
	 * @param defaultValue
	 * @return
	 */
	public String read(String propertyName, String defaultValue) {
		Properties p = new Properties();// ���������ļ���ȡ��
		FileInputStream in = null;
		try {
			// propertiesFileName��test.properties
			in = new FileInputStream(fileName);
			p.load(in);
			in.close();// �����˹ر�
			
			return p.getProperty(propertyName, defaultValue);
		} catch (Throwable e) {
			e.printStackTrace();
		}finally{
			try{
				in.close();
			}catch(Throwable e){
				
			}
		}
		return defaultValue;
	}

	/**
	 * 写属性值
	 * @param propertyName
	 * @param propertyValue
	 * @return
	 */
	public boolean write(String propertyName, String propertyValue) {
		Properties p = new Properties();
		FileInputStream in = null;
		FileOutputStream out = null;
		
		try{
			in = new FileInputStream(fileName);
			p.load(in);//
			in.close();			
		}catch(Throwable e){
			
		}finally{
			try{
				in.close();
			}catch(Throwable e){
				
			}
		}
		try {
			p.setProperty(propertyName, propertyValue);// ��������ֵ���粻���Բ������½�
			out = new FileOutputStream(fileName);// �����
			p.store(out, "");// ��������ͷ���粻�����ã���Ѻ���һ����""�滻��
			out.flush();// ��ջ��棬д�����
			out.close();// �ر������
			return true;
		} catch (Throwable e) {

		}finally{
			try{
				out.close();
			}catch(Throwable e){
				
			}
		}
		return false;
	}

}