using System;

using NModbus.IO;

namespace NModbus.SerialPortStream

{

/// <summary>

/// An adapter for the SerialPortStream class. Useful for getting serial port access on non-Windows devices.

/// </summary>

public class SerialPortStreamAdapter : IStreamResource

{

private readonly RJCP.IO.Ports.SerialPortStream _serialPortStream;

public SerialPortStreamAdapter(RJCP.IO.Ports.SerialPortStream serialPortStream)

{

_serialPortStream = serialPortStream;

}

public int InfiniteTimeout => RJCP.IO.Ports.SerialPortStream.InfiniteTimeout;

public int ReadTimeout

{

get => _serialPortStream.ReadTimeout;

set => _serialPortStream.ReadTimeout = value;

}

public int WriteTimeout

{

get => _serialPortStream.WriteTimeout;

set => _serialPortStream.WriteTimeout = value;

}

public void DiscardInBuffer()

{

_serialPortStream.DiscardInBuffer();

}

public int Read(byte[] buffer, int offset, int count)

{

int result = _serialPortStream.Read(buffer, offset, count);

if (result == 0)

throw new TimeoutException();

return result;

}

public void Write(byte[] buffer, int offset, int count)

{

_serialPortStream.Write(buffer, offset, count);

}

public void Dispose()

{

_serialPortStream.Dispose();

}

}

}