// Pngcs is a CSharp implementation of PNG binary reader and writer.
// Copyright (C) 2025 Shuai Zhang <zhangshuai.ustc@gmail.com>
//
// Based on original work:
//   Copyright 2012    Hernán J. González    hgonzalez@gmail.com
//   Licensed under the Apache License, Version 2.0
//
//   You should have received a copy of the Apache License 2.0
//   along with the program.
//   If not, see <http://www.apache.org/licenses/LICENSE-2.0>
//
// This program is free software: 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

namespace Hjg.Pngcs
{
    /// <summary>
    /// Utility functions for C# porting
    /// </summary>
    ///
    internal sealed class PngCsUtils
    {
        internal static bool arraysEqual4(byte[] ar1, byte[] ar2)
        {
            return (ar1[0] == ar2[0]) &&
                    (ar1[1] == ar2[1]) &&
                    (ar1[2] == ar2[2]) &&
                    (ar1[3] == ar2[3]);
        }


        internal static bool arraysEqual(byte[] a1, byte[] a2)
        {
            if (a1.Length != a2.Length) return false;
            for (int i = 0; i < a1.Length; i++)
                if (a1[i] != a2[i]) return false;
            return true;
        }
    }
}
