package chat.util;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;

import com.google.protobuf.ByteString;

public class ByteStrToStr {

	public static String transformStr(ByteString src) {
		byte[] input = src.toByteArray();
		ByteBuffer buffer = ByteBuffer.allocate(input.length);
	    buffer.put(input);
	    buffer.flip();
	    
	    Charset charset = null;
	    CharsetDecoder decoder = null;
	    CharBuffer charBuffer = null;

	    try {
	         charset = Charset.forName("UTF-8");
	         decoder = charset.newDecoder();
	         charBuffer = decoder.decode(buffer.asReadOnlyBuffer());

	         return charBuffer.toString();
	    } catch (Exception ex) {
	        ex.printStackTrace();
	    }
	    return "";
	}	

}