Method readDataFromFileCommonTime

src/backend/datasources/filters/VectorBLFFilter.cpp:257–462

#endif

int VectorBLFFilterPrivate::readDataFromFileCommonTime(const QString& fileName, int lines) {
	PERFTRACE(QLatin1String(Q_FUNC_INFO));

	if (!isValid(fileName)) {
		q->setLastError(i18n("Invalid file."));
		return 0;
	}

	const auto validStatus = m_dbcParser.isValid();
	if (validStatus != DbcParser::ParseStatus::Success) {
		addWarningError({DBCParserParseStatusToVectorBLFStatus(validStatus), 0});
		return 0;
	}

	if (m_parseState.ready && m_parseState.requestedLines == lines)
		return m_parseState.readLines;

	m_DataContainer.clear();

#ifdef HAVE_VECTOR_BLF
	Vector::BLF::File file;
	file.open(fileName.toLocal8Bit().data());

	// 1. Reading in messages
	QVector<const Vector::BLF::ObjectHeaderBase*> objectHeaders;
	QVector<uint32_t> ids;
	int message_counter = 0;
	{
		PERFTRACE(QLatin1String(Q_FUNC_INFO) + QLatin1String("Parsing BLF file"));
		Vector::BLF::ObjectHeaderBase* objectHeader = nullptr;
		while (file.good() && ((lines >= 0 && message_counter < lines) || lines < 0)) {
			try {
				objectHeader = file.read();
			} catch (std::runtime_error& e) { DEBUG("Exception: " << e.what() << std::endl); }
			if (objectHeader == nullptr)
				break;

			if (objectHeader->objectType != Vector::BLF::ObjectType::CAN_MESSAGE2)
				continue;

			int id;
			if (objectHeader->objectType == Vector::BLF::ObjectType::CAN_MESSAGE2) {
				const auto message = reinterpret_cast<Vector::BLF::CanMessage2*>(objectHeader);
				id = message->id;
			} else
				return 0;

			objectHeaders.append(objectHeader);
			if (!ids.contains(id))
				ids.append(id);
			message_counter++;
		}
	}

	// 2. Create vector names
	QHash<uint32_t, int> idIndexTable;
	m_dbcParser.getSignals(ids, DbcParser::PrefixType::None, DbcParser::SuffixType::Unit, idIndexTable, m_signals);