using System.IO;

namespace CSharpFastPFOR.Port

{

public class ByteBuffer

{

public readonly MemoryStream _ms;

private readonly BinaryWriter _bw;

private readonly BinaryReader _br;

private ByteOrder _order;

public ByteBuffer(int length)

{

_ms = new MemoryStream();

_ms.SetLength(length);

_bw = new BinaryWriter(_ms);

_br = new BinaryReader(_ms);

_order = ByteOrder.BIG_ENDIAN; //To simulate Java

}

internal static ByteBuffer allocateDirect(int length)

{

return new ByteBuffer(length);

}

public void order(ByteOrder order)

{

_order = order;

}

public int position()

{

return (int)_ms.Position;

}

public void put(sbyte b)

{

_bw.Write(b);

}

public void flip()

{

_ms.Position = 0;

}

public IntBuffer asIntBuffer()

{

return new IntBuffer(_ms, _order);

}

public void clear()

{

byte[] empty = new byte[_ms.Length];

_ms.Position = 0;

_ms.Write(empty, 0, empty.Length);

_ms.Position = 0;

}

public sbyte get()

{

return _br.ReadSByte();

}

internal void put(int[] src, int offset, int length)

{

//TODO: port this

//checkBounds(offset, length, src.Length);

//if (length > remaining())

// throw new BufferOverflowException();

int end = offset + length;

for (int i = offset; i < end; i++)

_bw.Write(src[i]);

}

}

}