Method readHeaderFromFile

YUViewLib/src/statistics/StatisticsFileCSV.cpp:345–506

}

void StatisticsFileCSV::readHeaderFromFile(StatisticsData &statisticsData)
{
  // TODO: Why is there a try block here? I see no throwing of anything ...
  //       We should get rid of this and just set an error and return on failure.
  try
  {
    if (!this->file.isOk())
      return;

    statisticsData.clear();

    // scan header lines first
    // also count the lines per Frame for more efficient memory allocation
    // if an ID is used twice, the data of the first gets overwritten
    bool           typeParsingActive = false;
    StatisticsType aType;

    while (!this->file.atEnd())
    {
      // read one line
      auto    aLineByteArray = this->file.readLine();
      QString aLine(aLineByteArray);

      // get components of this line
      auto rowItemList = parseCSVLine(aLine, ';');

      if (rowItemList[0].isEmpty())
        continue;

      // either a new type or a line which is not header finishes the last type
      if (((rowItemList[1] == "type") || (rowItemList[0][0] != '%')) && typeParsingActive)
      {
        // Last type is complete. Store this initial state.
        aType.setInitialState();
        statisticsData.addStatType(aType);

        // start from scratch for next item
        aType             = StatisticsType();
        typeParsingActive = false;

        // if we found a non-header line, stop here
        if (rowItemList[0][0] != '%')
          return;
      }

      if (rowItemList[1] == "type") // new type
      {
        aType.typeID   = rowItemList[2].toInt();
        aType.typeName = rowItemList[3];

        // The next entry (4) is "map", "range", or "vector"
        if (rowItemList.count() >= 5)
        {
          if (rowItemList[4] == "map" || rowItemList[4] == "range")
          {
            aType.hasValueData    = true;
            aType.renderValueData = true;
          }