/// <summary>
/// Closes FuelTanksMeasurements stream and sets IsStreamOpen to "false".
/// </summary>
private void CloseFuelTanksMeasurementsStream()
{
if (IsStreamOpen)
{
FuelTankMeasurementsStreamReader.Close();
FuelTankMeasurementsStreamReader.Dispose();
IsStreamOpen = false;
}
}
/// <summary>
/// Method used to retrieve next measurement value from dataset.
/// </summary>
/// <returns>KeyValuePair with key being tank id and value being measurement value.</returns>
/// <exception cref="InvalidDataException">Thrown when read lind from dataset cannot be parsed by regex,
/// basically meaning that this particular line is incorrectly saved into file.</exception>
public KeyValuePair <int, double> GetNextMeasurementValue()
{
if (!IsStreamOpen)
{
OpenFuelTankMeasurementsStream();
}
if (FuelTankMeasurementsStreamReader.EndOfStream)
{
CloseFuelTanksMeasurementsStream();
OpenFuelTankMeasurementsStream();
}
var dataLine = FuelTankMeasurementsStreamReader.ReadLine();
var values = FuelTankCSVRegex.Match(dataLine);
if (values.Success)
{
int fuelTankId = int.Parse(values.Groups[1].Value);
double fuelTankMeasurement = double.Parse(values.Groups[2].Value.Replace(',', '.'));
return(new KeyValuePair <int, double>(fuelTankId, fuelTankMeasurement));
}
throw new InvalidDataException("Data in csv file did not meet requiriments: REGEX - @\"(\\d+),\"?(\\d+,?\\d*)\"?\")");
}
