N_m3u8DL-RE/src/N_m3u8DL-RE.Parser/Mp4/BinaryWriter2.cs

using System.Text;

namespace Mp4SubtitleParser;

// make BinaryWriter in Big Endian
class BinaryWriter2 : BinaryWriter
{
    private static bool IsLittleEndian = BitConverter.IsLittleEndian;
    public BinaryWriter2(System.IO.Stream stream) : base(stream) { }


    public void WriteUInt(decimal n, int offset = 0)
    {
        var arr = BitConverter.GetBytes((uint)n);
        if (IsLittleEndian)
            Array.Reverse(arr);
        if (offset != 0)
            arr = arr[offset..];
        BaseStream.Write(arr);
    }

    public override void Write(string text)
    {
        BaseStream.Write(Encoding.ASCII.GetBytes(text));
    }

    public void WriteInt(decimal n, int offset = 0)
    {
        var arr = BitConverter.GetBytes((int)n);
        if (IsLittleEndian)
            Array.Reverse(arr);
        if (offset != 0)
            arr = arr[offset..];
        BaseStream.Write(arr);
    }

    public void WriteULong(decimal n, int offset = 0)
    {
        var arr = BitConverter.GetBytes((ulong)n);
        if (IsLittleEndian)
            Array.Reverse(arr);
        if (offset != 0)
            arr = arr[offset..];
        BaseStream.Write(arr);
    }

    public void WriteUShort(decimal n, int padding = 0)
    {
        var arr = BitConverter.GetBytes((ushort)n);
        if (IsLittleEndian)
            Array.Reverse(arr);
        while (padding > 0)
        {
            arr = arr.Concat(new byte[] { 0x00 }).ToArray();
            padding--;
        }
        BaseStream.Write(arr);
    }

    public void WriteShort(decimal n, int padding = 0)
    {
        var arr = BitConverter.GetBytes((short)n);
        if (IsLittleEndian)
            Array.Reverse(arr);
        while (padding > 0)
        {
            arr = arr.Concat(new byte[] { 0x00 }).ToArray();
            padding--;
        }
        BaseStream.Write(arr);
    }

    public void WriteByte(byte n, int padding = 0)
    {
        var arr = new byte[] { n };
        while (padding > 0)
        {
            arr = arr.Concat(new byte[] { 0x00 }).ToArray();
            padding--;
        }
        BaseStream.Write(arr);
    }
}