execute method

Implementation

@override
Tuple2<SCardResult, List<int>> execute(_PcscContext ctx) {
  final sendBuf = _NativeUtils.allocateBytes(pbSendBuffer);
  final recvBuf = calloc<ffi.Uint8>(MAX_BUFFER_SIZE);
  final bytesRet = calloc<DWORD>();

  try {
    final ret = ctx.winscard.SCardControl(hCard, dwControlCode, sendBuf.cast<ffi.Void>(), pbSendBuffer.length, recvBuf.cast<ffi.Void>(), MAX_BUFFER_SIZE, bytesRet);
    final result = SCardResult(ret);
    if (!result.isSuccess) return Tuple2(result, []);
    return Tuple2(result, _NativeUtils.convertBytes(recvBuf, bytesRet.value));
  } finally {
    calloc.free(sendBuf);
    calloc.free(recvBuf);
    calloc.free(bytesRet);
  }
}