package com.everstar.tools;

import java.io.*;

public class Convert
{
	static final String UNICODE = "8859_1";
	static final String GBCODE	= "gb2312";

	public static String unicode2native(String str)
	{
		return convert(str,UNICODE,GBCODE);
	}
	
	public static String native2unicode(String str)
	{
		return convert(str,GBCODE,UNICODE);
	}

	private static String convert(String str, String source, String target)
	{
		if(	str == null || (str = str.trim()) == "" ||
			source == null || (source = source.trim()) == "" ||
			target == null || (target = target.trim()) == "")
			return str;

		try
		{
			return new String(str.getBytes(source),target);
		}
		catch(UnsupportedEncodingException ueex)
		{
			return str;
		}		
	}
}