Method createCsvFile

app/src/CSV/Export.cpp:131–198

* @brief Creates a new CSV file and writes the header row from the frame schema. */

 * @brief Creates a new CSV file and writes the header row from the frame schema.
 */
void CSV::ExportWorker::createCsvFile(const DataModel::Frame& frame)
{
  const auto dt       = QDateTime::currentDateTime();
  const auto fileName = dt.toString("yyyy-MM-dd_HH-mm-ss") + ".csv";

  const auto subdir = Misc::WorkspaceManager::instance().path("CSV");
  QString safeTitle = frame.title;
  safeTitle.remove(QChar('/'));
  safeTitle.remove(QChar('\\'));
  safeTitle.remove(QChar(':'));
  safeTitle.remove(QChar('*'));
  safeTitle.remove(QChar('?'));
  safeTitle.remove(QChar('"'));
  safeTitle.remove(QChar('<'));
  safeTitle.remove(QChar('>'));
  safeTitle.remove(QChar('|'));
  safeTitle.remove(QChar('\0'));
  safeTitle.remove(QStringLiteral(".."));
  safeTitle = safeTitle.simplified();

  int keepCsv = 0;
  for (int i = safeTitle.size(); i > 0; --i) {
    const QChar c = safeTitle.at(i - 1);
    if (c != QChar('.') && c != QChar(' ')) {
      keepCsv = i;
      break;
    }
  }
  safeTitle.truncate(keepCsv);

  if (safeTitle.isEmpty())
    safeTitle = QStringLiteral("Untitled");

  const QString path = QString("%1/%2/").arg(subdir, safeTitle);

  QDir dir(path);
  if (!dir.exists() && !dir.mkpath(".")) {
    qWarning() << "Failed to create directory:" << path;
    return;
  }

  m_csvFile.setFileName(dir.filePath(fileName));
  if (!m_csvFile.open(QIODevice::WriteOnly | QIODevice::Text)) {
    qWarning() << "Cannot open CSV file for writing:" << dir.filePath(fileName);
    return;
  }

  m_lastFinalValues.clear();

  m_textStream.setDevice(&m_csvFile);
  m_textStream.setGenerateByteOrderMark(true);
  m_textStream.setEncoding(QStringConverter::Utf8);

  m_schema = DataModel::buildExportSchema(frame);

  m_textStream << "Elapsed (s)";
  for (const auto& col : m_schema.columns) {
    auto label = QString("%1/%2").arg(col.groupTitle, col.title).simplified();