C++ (Cpp) NMEAInputLine::ReadCheckedCompare Examples

Example #1

File: Parser.cpp Project: Adrien81/XCSoar

/**
 * Parse a "$VMVABD" sentence.
 *
 * Example: "$VMVABD,0000.0,M,0547.0,M,-0.0,,,MS,0.0,KH,22.4,C*65"
 */
static bool
FlytecParseVMVABD(NMEAInputLine &line, NMEAInfo &info)
{
  fixed value;

  // 0,1 = GPS altitude, unit
  if (line.ReadCheckedCompare(info.gps_altitude, "M"))
    info.gps_altitude_available.Update(info.clock);

  // 2,3 = baro altitude, unit
  if (line.ReadCheckedCompare(value, "M"))
    info.ProvideBaroAltitudeTrue(value);

  // 4-7 = integrated vario, unit
  line.Skip(4);

  // 8,9 = indicated or true airspeed, unit
  if (line.ReadCheckedCompare(value, "KH"))
    // XXX is that TAS or IAS?  Documentation isn't clear.
    info.ProvideBothAirspeeds(Units::ToSysUnit(value, Unit::KILOMETER_PER_HOUR));

  // 10,11 = temperature, unit
  info.temperature_available =
    line.ReadCheckedCompare(value, "C");
  if (info.temperature_available)
    info.temperature = CelsiusToKelvin(value);

  return true;
}