Method loadFile

src/csvwindow.cpp:332–464

* Loads file from 'filename'. Any checks if window objects is in use and so on has to be done before. * Returns true, when the file could be loaded. */

 *	Returns true, when the file could be loaded.
 */
bool CsvWindow::loadFile(std::string filename, bool askUser, bool reopen) {
	std::ifstream input;
	long fileLength;
	std::stringstream sstr;
	CsvParser *parser = new CsvParser();
	std::pair<CsvDefinition::Encodings, int> guessedEncoding;
	std::pair<CsvDefinition, float> guessedDefinition;
	CsvDefinition definition;
	std::map<long,long> histogram;

	if( app.isAlreadyOpened(filename) && !reopen ) {
		CsvApplication::myFlChoice("", "File is already open!", {"Okay"});
		return false;
	}
	
	input.open(filename);
	if( !input ) {
		CsvApplication::myFlChoice("", "Could not open file!", {"Okay"});
		return false;
	}
	
	// Length of file: needed for guessEncoding
	fileLength = Helper::getFileSize(filename);
	
	// guess properties
	guessedDefinition = app.guessDefinition(&input);
	definition = guessedDefinition.first;
	guessedEncoding = CsvApplication::guessEncoding(&input, fileLength);
	definition.encoding = guessedEncoding.first;
	definition.bomBytes = guessedEncoding.second;

	if( guessedEncoding.first == CsvDefinition::ENC_NONE || guessedDefinition.second < 0.6 || askUser ) {
		definition = CsvApplication::setTypeByUser(definition, &input, "Open");
		if( definition.cancelled ) {
			return false;
		}
	}
	
	// Switch off custom header row
	if( table->customHeaderRowShown() ) {
		showHeaderCheckbox->clear();
		table->switchHeader();
		updateTable();
	}
	
	// Start timing
	time_t startTime = std::time(0);
	
	// Tabelle leeren und geparste Daten laden
	table->clearTable();
	app.showImWorkingWindow("Opening file ...", true);
	histogram = parser->parseCsvStream(&input, table->getStorage(), &definition);
	app.hideImWorkingWindow();
	table->updateInternals();
	if( table->getNumberRows() == 0 || table->getNumberCols() == 0 ) {
		if( askUser ) {
			CsvApplication::myFlChoice("", "Could not open file with the choosen CSV definition!", {"Okay"});			
		} else {