public bool Supports(MesgDefinition mesgDef)
{
if (mesgDef == null)
{
return(false);
}
if (GlobalMesgNum != mesgDef.GlobalMesgNum)
{
return(false);
}
if (LocalMesgNum != mesgDef.LocalMesgNum)
{
return(false);
}
foreach (FieldDefinition fieldDef in mesgDef.GetFields())
{
FieldDefinition supportedFieldDef = GetField(fieldDef.Num);
if (supportedFieldDef == null)
{
return(false);
}
if (fieldDef.Size > supportedFieldDef.Size)
{
return(false);
}
}
return(true);
}
public void Read(Stream inStream, MesgDefinition defnMesg)
{
inStream.Position = 1;
EndianBinaryReader mesgReader = new EndianBinaryReader(inStream, defnMesg.IsBigEndian);
LocalNum = defnMesg.LocalMesgNum;
foreach (FieldDefinition fieldDef in defnMesg.GetFields())
{
// It's possible the field type found in the field definition may
// not agree with the type defined in the profile. The profile
// type will be preferred for decode.
Field field = GetField(fieldDef.Num);
if (field == null)
{
// We normally won't have fields attached to our skeleton message,
// as we add values we need to add the fields too based on the mesg,field
// combo in the profile. Must derive from the profile so the scale etc
// is correct
field = new Field(Profile.GetMesg(this.Num).GetField(fieldDef.Num));
if (field.Num == Fit.FieldNumInvalid)
{
// If there was no info in the profile the FieldNum will get set to invalid
// so preserve the unknown fields info while we know it
field.Num = fieldDef.Num;
field.Type = fieldDef.Type;
}
SetField(field);
}
object value;
// strings may be an array and are of variable length
if ((field.Type & Fit.BaseTypeNumMask) == Fit.String)
{
List <byte> utf8Bytes = new List <byte>();
byte b = new byte();
for (int i = 0; i < fieldDef.Size; i++)
{
b = mesgReader.ReadByte();
if (b == 0x00)
{
field.AddValue(utf8Bytes.ToArray());
utf8Bytes.Clear();
}
else
{
utf8Bytes.Add(b);
}
}
if (utf8Bytes.Count != 0)
{
field.AddValue(utf8Bytes.ToArray());
utf8Bytes.Clear();
}
}
else
{
int numElements = (int)fieldDef.Size / Fit.BaseType[field.Type & Fit.BaseTypeNumMask].size;
for (int i = 0; i < numElements; i++)
{
switch (field.Type & Fit.BaseTypeNumMask)
{
case Fit.Enum:
case Fit.Byte:
case Fit.UInt8:
case Fit.UInt8z:
value = mesgReader.ReadByte();
break;
case Fit.SInt8:
value = mesgReader.ReadSByte();
break;
case Fit.SInt16:
value = mesgReader.ReadInt16();
break;
case Fit.UInt16:
case Fit.UInt16z:
value = mesgReader.ReadUInt16();
break;
case Fit.SInt32:
value = mesgReader.ReadInt32();
break;
case Fit.UInt32:
case Fit.UInt32z:
value = mesgReader.ReadUInt32();
break;
case Fit.Float32:
value = mesgReader.ReadSingle();
break;
case Fit.Float64:
value = mesgReader.ReadDouble();
break;
default:
value = mesgReader.ReadBytes(fieldDef.Size);
break;
}
field.SetRawValue(i, value);
}
}
}
}