private void ParseInfo(IndividualEndianessBinaryReader br)
{
if (_infoLength > 0)
{
_information = br.ReadBytes(_infoLength);
}
}
public static AdditionalInformationField Parse(IndividualEndianessBinaryReader br)
{
if (br.Available < 2)
{
throw BufferSizeException.TooSmall("AdditionalInformationField");
}
return(new AdditionalInformationField(br));
}
protected override void ParseServiceInformation(IndividualEndianessBinaryReader br)
{
ParseControlField1(br);
ParseControlField2(br);
ParseSourceAddress(br);
ParseDestinationAddress(br);
ParseAPDU(br);
}
private void ParseLength(IndividualEndianessBinaryReader br)
{
_infoLength = br.ReadByte();
if (br.Available < _infoLength)
{
throw BufferSizeException.TooSmall("AdditionalFieldInfo");
}
}
/// <summary>
/// Create an <c>AdditionalInformationField</c> class by parsing raw data
/// </summary>
/// <param name="br">Reader with the associated byte array</param>
protected AdditionalInformationField(IndividualEndianessBinaryReader br)
{
ParseType(br);
ParseLength(br);
if (br.Available < _infoLength)
{
throw BufferSizeException.TooSmall("AdditionalInformationField");
}
ParseInfo(br);
VerifyLength(_infoType, _infoLength);
_size = 2 + _infoLength;
}
protected void ParseAPDU(IndividualEndianessBinaryReader br)
{
// read length information and increase lenght by one due to TPCI/APCI encoding
var len = br.ReadByte() + 1;
if (br.Available < len)
{
throw BufferSizeException.TooBig("Cemi Frame - TCPI Data");
}
_payload = br.ReadBytes(len);
_apci = new Apci(_payload);
}
private void ParseType(IndividualEndianessBinaryReader br)
{
var infotype = br.ReadByte();
if (Enum.IsDefined(typeof(AdditionalInfoType), infotype))
{
_infoType = (AdditionalInfoType)infotype;
}
else
{
throw BufferFieldException.TypeUnknown("AdditionalInfoType", infotype);
}
}
protected void ParseDestinationAddress(IndividualEndianessBinaryReader br)
{
var dst = br.ReadU2be();
if (_controlField2.DestinationAddressType == AddressType.GroupAddress)
{
_destinationAddress = new GroupAddress(dst);
}
else
{
_destinationAddress = new IndividualAddress(dst);
}
}
public static bool TryParse(out CemiLData cemildata, IndividualEndianessBinaryReader br)
{
bool result = false;
try
{
cemildata = new CemiLData(br);
result = true;
}
catch
{
cemildata = null;
result = false;
}
return(result);
}
/// <summary>
/// Creates a new cEMI L_Data Frame
/// </summary>
/// <param name="br">IndividualEndianessBinaryReader with the underlying buffer the frame is parsed from</param>
protected CemiLData(IndividualEndianessBinaryReader br)
: base(br)
{
}
public static CemiLData Parse(IndividualEndianessBinaryReader br)
{
return(new CemiLData(br));
}
protected void ParseSourceAddress(IndividualEndianessBinaryReader br)
{
var src = br.ReadU2be();
_sourceAddress = new IndividualAddress(src);
}
protected void ParseControlField2(IndividualEndianessBinaryReader br)
{
var ctrl = br.ReadByte();
_controlField2 = new ControlField2(ctrl);
}
protected void ParseControlField1(IndividualEndianessBinaryReader br)
{
var ctrl1 = br.ReadByte();
_controlField1 = new ControlField1(_messageCode, ctrl1);
}
protected override bool VerifyBufferSize(IndividualEndianessBinaryReader br)
{
return(br.Size - br.Position >= MESSAGEMINLENGTH);
}
