// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename       : CompareBytes.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Helpers.
//
// --[ Description ] ----------------------------------------------------------
//
//     Compares two byte arrays.
//
// --[ License ] --------------------------------------------------------------
//
//     This library is free software; you can redistribute it and/or modify
//     it under the terms of the GNU Lesser General Public License as
//     published by the Free Software Foundation; either version 2.1 of the
//     License, or (at your option) any later version.
//
//     This library 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
//     Lesser General Public License for more details.
//
//     You should have received a copy of the GNU Lesser General Public
//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2018 Natalia Portillo
// ****************************************************************************/

namespace DiscImageChef
{
    public static partial class ArrayHelpers
    {
        /// <summary>
        ///     Compares two byte arrays
        /// </summary>
        /// <param name="different"><c>true</c> if they are different in any way</param>
        /// <param name="sameSize"><c>true</c> if they have the same size</param>
        /// <param name="compareArray1">Left array</param>
        /// <param name="compareArray2">Right array</param>
        public static void CompareBytes(out bool different, out bool sameSize, byte[] compareArray1,
                                        byte[] compareArray2)
        {
            different = false;
            sameSize = true;

            long leastBytes;
            if(compareArray1.LongLength < compareArray2.LongLength)
            {
                sameSize = false;
                leastBytes = compareArray1.LongLength;
            }
            else if(compareArray1.LongLength > compareArray2.LongLength)
            {
                sameSize = false;
                leastBytes = compareArray2.LongLength;
            }
            else leastBytes = compareArray1.LongLength;

            for(long i = 0; i < leastBytes; i++)
                if(compareArray1[i] != compareArray2[i])
                {
                    different = true;
                    return;
                }
        }
    }
}