SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package net.multiphasicapps.io;

/**
 * This represents the alphabet that is used for Base64.
 *
 * @since 2018/03/05
 */
public enum Base64Alphabet
{
    /** The basic and MIME alphabet. */
    BASIC('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
        'L', 'M',
        'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
        'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/', '='),
    
    /** The URL alphabet. */
    URL('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
        'L', 'M',
        'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
        'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '_', '='),
    
    /* End. */
    ;
    
    /** The alphabet for the characters. */
    final char[] _alphabet;
    
    /**
     * Initializes the alphabet.
     *
     * @param __alphabet The alphabet.
     * @throws NullPointerException On null arguments.
     * @since 2018/03/05
     */
    Base64Alphabet(char... __alphabet)
        throws NullPointerException
    {
        if (__alphabet == null)
            throw new NullPointerException("NARG");
        
        this._alphabet = __alphabet;
    }
}