/// <summary>
/// Add a new signal to the last node of the DBC node collection
/// </summary>
/// <param name="NewSignal">DBC signal to be added</param>
private void AddSignalToLastNode(DBCSignal NewSignal)
{
if (Frames.Count > 0)
{
Frames[Frames.Count - 1].Signals.Add(NewSignal);
}
}
/// <summary>
/// DBC file reading function
/// </summary>
/// <param name="FilePath">File path of the DBC</param>
/// <returns>Reading result (True: OK; False: Error)</returns>
public bool ReadDBC(string FilePath)
{
if (!(FilePath.Equals("")))
{
StreamReader SR = new StreamReader(FilePath);
while (!SR.EndOfStream)
{
string line = SR.ReadLine();
if (line.Length > 4 & !(line.StartsWith("\t")))
{
line = line.TrimStart(Char.Parse(" "));
int iEntrySep = line.IndexOf(" ");
string EntryId = line.Substring(0, iEntrySep);
string EntryData = line.Substring(iEntrySep + 1, line.Length - (iEntrySep + 1));
if (EntryId.Equals("VERSION")) //DBC Version
{
Version = EntryData.Substring(1, EntryData.Length - 2); //Suppression of "
}
else if (EntryId.Equals("BU_:")) //Bus components
{
BusComponents = EntryData.Split(Char.Parse(" "));
}
else if (EntryId.Equals("BO_")) //Node
{
DBCFrame oNode = new DBCFrame();
string[] NodeData = EntryData.Split(Char.Parse(" "));
//oNode.Identifier=Int16.Parse(NodeData[0]);
if (int.TryParse(NodeData[0], out oNode.Identifier))
{
oNode.Name = NodeData[1].Substring(0, NodeData[1].Length - 1); //Suppression of :
oNode.ByteLength = Int16.Parse(NodeData[2]);
oNode.Transmitter = NodeData[3];
Frames.Add(oNode);
}
}
else if (EntryId.Equals("SG_")) //Signal
{
DBCSignal oSignal = new DBCSignal();
EntryData = FilterDoubleSpace(EntryData);
string[] SignalData = EntryData.Split(Char.Parse(" "));
int PtOffset = 0;
string strTmp;
string[] strArray;
int i;
//Name
oSignal.Name = SignalData[0];
//Multiplexer
if (SignalData.Length > 7)
{
PtOffset = 1;
oSignal.Multiplexer = new DBCMultiplexer();
if (SignalData[1].Equals("M"))
{
oSignal.Multiplexer.IsMultiplexerSignal = true;
}
else
{
oSignal.Multiplexer.MultiplexerSignal = GetMultiplexerSignalInLastNode();
oSignal.Multiplexer.MultiplexerValue = Int16.Parse(SignalData[1].Substring(1, SignalData[1].Length - 1));
}
}
//Start bit, length, endianess, signedness
i = SignalData[2 + PtOffset].IndexOf("@");
strTmp = SignalData[2 + PtOffset].Substring(0, i);
strArray = strTmp.Split(Char.Parse("|"));
oSignal.StartBit = Int16.Parse(strArray[0]);
oSignal.Length = Int16.Parse(strArray[1]);
strTmp = SignalData[2 + PtOffset].Substring(i + 1, 2);
if (strTmp.Substring(0, 1).Equals("0")) //Big Endian (MSB)
{
oSignal.Endianess = DBCEndianess.MSBFirst;
}
else //Little endian (LSB)
{
oSignal.Endianess = DBCEndianess.LSBFirst;
}
if (strTmp.Substring(1, 1).Equals("-"))
{
oSignal.Signed = true;
}
else
{
oSignal.Signed = false;
}
//Linearization gain and offset
strTmp = SignalData[3 + PtOffset].Substring(1, SignalData[3 + PtOffset].Length - 2);
strArray = strTmp.Split(Char.Parse(","));
oSignal.Gain = Double.Parse(strArray[0]);
oSignal.Zero = Double.Parse(strArray[1]);
//Limit values
strTmp = SignalData[4 + PtOffset].Substring(1, SignalData[4 + PtOffset].Length - 2);
strArray = strTmp.Split(Char.Parse("|"));
oSignal.LimitMin = Double.Parse(strArray[0]);
oSignal.LimitMax = Double.Parse(strArray[1]);
//Unit
strTmp = SignalData[5 + PtOffset].Substring(1, SignalData[5 + PtOffset].Length - 2);
oSignal.Unit = strTmp;
//Transmitter
oSignal.Destination = SignalData[6 + PtOffset];
AddSignalToLastNode(oSignal);
}
else if (EntryId.Equals("CM_")) //Comment
{
DBCComment oComment = new DBCComment();
int i = EntryData.IndexOf("\"", 0);
oComment.Comment = EntryData.Substring(i + 1, EntryData.Length - (i + 3));
string sTmp = EntryData.Substring(0, i);
string[] CommentData = sTmp.Split(Char.Parse(" "));
if (int.TryParse(CommentData[1], out oComment.NodeIdentifier))
{
if (CommentData[0].Equals("BO_"))
{
oComment.Object = DBCCommentObject.NodeComment;
//oComment.NodeIdentifier=Int16.Parse(CommentData[1]);
oComment.SignalName = "";
}
else if (CommentData[0].Equals("SG_"))
{
oComment.Object = DBCCommentObject.SignalComment;
//oComment.NodeIdentifier=Int16.Parse(CommentData[1]);
oComment.SignalName = CommentData[2];
}
else
{
oComment.Object = DBCCommentObject.Unknown;
}
}
else
{
oComment = null;
}
if (!(oComment == null))
{
SetCommentToObject(oComment);
}
}
else if (EntryId.Equals("VAL_")) //Bit map values
{
DBCSignalBitMap oBitMap = new DBCSignalBitMap();
int j = 0;
int i = EntryData.IndexOf(" ");
oBitMap.NodeIdentifier = Int16.Parse(EntryData.Substring(0, i));
j = EntryData.IndexOf(" ", i + 1);
oBitMap.SignalName = EntryData.Substring(i + 1, j - i);
while (j < EntryData.Length - 2)
{
DBCValue oBit = new DBCValue();
i = EntryData.IndexOf("\"", j);
string sTmp1 = EntryData.Substring(j + 1, i - j - 1).Trim();
oBit.BitValue = Int64.Parse(sTmp1);
j = i + 1;
i = EntryData.IndexOf("\"", j);
string sTmp2 = EntryData.Substring(j, i - j);
oBit.BitDescription = sTmp2;
j = i + 1;
}
SetBitMapToSignal(oBitMap);
}
}
}
SR.Close();
SR = null;
return(true);
}
return(false);
}