public NmeaSentence AddNmeaSentence(String sentence, TalkerID?tid = null)
{
if (sentence == null)
{
throw new ArgumentNullException();
}
if (!IsFull && NmeaSentence.validateChecksum(sentence))
{
switch (NmeaIDTools.ParseSentenceID(sentence))
{
case SentenceID.GGA:
{
if (gga == null || !gga.IsValid)
{
gga = new GGASentence(sentence);
return(gga);
}
else
{
throw new ExcessiveStringException(SentenceID.GGA);
}
}
case SentenceID.GSA:
{
if (gsa == null)
{
gsa = new GSASentence(sentence);
return(gsa);
}
else
{
gsa.Parse(sentence);
return(gsa);
}
}
case SentenceID.RMC:
{
if (rmc == null)
{
rmc = new RMCSentence(sentence);
return(rmc);
}
else
{
throw new ExcessiveStringException(SentenceID.RMC);
}
}
case SentenceID.GSV:
{
if (gsv == null || gsv.TotalMessageCount == 0)
{
gsv = new GSVSentence(sentence);
return(gsv);
}
else
{
if (gsv.MessageCount < gsv.TotalMessageCount)
{
gsv.Parse(sentence);
return(gsv);
}
else
{
throw new ExcessiveStringException(SentenceID.GSV);
}
}
}
}
}
return(null);
}
