/*

 * Java Bittorrent API as its name indicates is a JAVA API that implements the Bittorrent Protocol

 * This project contains two packages:

 * 1. jBittorrentAPI is the "client" part, i.e. it implements all classes needed to publish

 *    files, share them and download them.

 *    This package also contains example classes on how a developer could create new applications.

 * 2. trackerBT is the "tracker" part, i.e. it implements a all classes needed to run

 *    a Bittorrent tracker that coordinates peers exchanges. *

 *

 * Copyright (C) 2007 Baptiste Dubuis, Artificial Intelligence Laboratory, EPFL

 *

 * This file is part of jbittorrentapi-v1.0.zip

 *

 * Java Bittorrent API is free software and a free user study set-up;

 * you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * Java Bittorrent API is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with Java Bittorrent API; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * @version 1.0

 * @author Baptiste Dubuis

 * To contact the author:

 * email: baptiste.dubuis@gmail.com

 *

 * More information about Java Bittorrent API:

 *    http://sourceforge.net/projects/bitext/

 */

//package atorrentapi;

class Main {

  /**

   *

   * Convert a byte[] array to readable string format. This makes the "hex"

   * readable!

   *

   * @author Jeff Boyle

   *

   * @return result String buffer in String format

   *

   * @param in

   *            byte[] buffer to convert to string format

   *

   */

  // Taken from http://www.devx.com/tips/Tip/13540

  public static String byteArrayToByteString(byte in[]) {

    byte ch = 0x00;

    int i = 0;

    if (in == null || in.length <= 0)

      return null;

    String pseudo[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9",

        "A", "B", "C", "D", "E", "F" };

    StringBuffer out = new StringBuffer(in.length * 2);

    while (i < in.length) {

      ch = (byte) (in[i] & 0xF0); // Strip off high nibble

      ch = (byte) (ch >>> 4); // shift the bits down

      ch = (byte) (ch & 0x0F); // must do this is high order bit is on!

      out.append(pseudo[(int) ch]); // convert the nibble to a String

      // Character

      ch = (byte) (in[i] & 0x0F); // Strip off low nibble

      out.append(pseudo[(int) ch]); // convert the nibble to a String

      // Character

      i++;

    }

    String rslt = new String(out);

    return rslt;

  }

}