/*
 * Enhydra Java Application Server Project
 * 
 * The contents of this file are subject to the Enhydra Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License on
 * the Enhydra web site ( http://www.enhydra.org/ ).
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See 
 * the License for the specific terms governing rights and limitations
 * under the License.
 * 
 * The Initial Developer of the Enhydra Application Server is Lutris
 * Technologies, Inc. The Enhydra Application Server and portions created
 * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
 * All Rights Reserved.
 * 
 * Contributor(s):
 * 
 * $Id: BytesToString.java,v 1.15 2005/06/13 09:26:06 draganr Exp $
 */





package com.lutris.util;

/**
	This class has static methods which convert arrays of bytes to
	a strings. It remaps non-ascii bytes to ".". One use for this class is
	to convert raw data read in from a file or the net to a human-readable
	form, probably for debugging.

	@author Andy John
*/
public class BytesToString {

	/**
		Converts the array of bytes to a string. Non-ascii characters
		are converted to ".".

		@param b The array of bytes to convert.
		@return The bytes converted into a string.
	*/	
	public static String conv(byte[] b) {
		return conv(b, b.length);
	}


	/**
		Converts the array of bytes to a string. Non-ascii characters
		are converted to ".". Only the first len bytes are used.

		@param b The array of bytes to convert.
		@param len Only uses bytes b[0]..b[len-1].
		@return The bytes converted into a string.
	*/
	public static String conv(byte[] b, int len) {
		byte[] c = new byte[len];
		for(int i=0; i<len; i++) {
			byte n = b[i];
			if ((n < 32) || (n > 128))
				n = 65;
			c[i] = n;
		}
		return new String(c);
	}
}