Method generatePlot

src/frontend/PlotTemplateDialog.cpp:140–221

}

CartesianPlot* PlotTemplateDialog::generatePlot() {
	const QString path = templatePath();
	if (path.isEmpty()) {
		updateErrorMessage(i18n("No templates found."));
		return nullptr;
	}

	QFile file(path);
	if (!file.exists()) {
		updateErrorMessage(i18n("File does not exist."));
		return nullptr;
	}

	if (!file.open(QIODevice::OpenModeFlag::ReadOnly)) {
		updateErrorMessage(i18n("Unable to read the file"));
		return nullptr;
	}

	XmlStreamReader reader(&file);

	while (!(reader.isStartDocument() || reader.atEnd()))
		reader.readNext();

	if (reader.atEnd()) {
		DEBUG("XML error: No start document token found");
		updateErrorMessage(i18n("Failed to load the selected plot template"));
		return nullptr;
	}

	reader.readNext();
	if (!reader.isDTD()) {
		DEBUG("XML error: No DTD token found");
		updateErrorMessage(i18n("Failed to load the selected plot template"));
		return nullptr;
	}

	reader.readNext();
	if (!reader.isStartElement() || reader.name() != QLatin1String("PlotTemplate")) {
		DEBUG("XML error: No PlotTemplate found");
		updateErrorMessage(i18n("Failed to load the selected plot template"));
		return nullptr;
	}

	bool ok;
	int xmlVersion = reader.readAttributeInt(QLatin1String("xmlVersion"), &ok);
	if (!ok) {
		DEBUG("XML error: xmlVersion found");
		updateErrorMessage(i18n("Failed to load the selected plot template"));
		return nullptr;
	}
	Project::setXmlVersion(xmlVersion);
	reader.readNext();

	while (!((reader.isStartElement() && reader.name() == QLatin1String("cartesianPlot")) || reader.atEnd()))
		reader.readNext();

	if (reader.atEnd()) {
		updateErrorMessage(i18n("XML error: No cartesianPlot found"));