QFileDialog::getSaveFileName default extension

[elcuco]

I want to add a extension to the file name a user chooses. Lets assume the piece of code attached. Lets also assume that the user chooses to save as "html", and he chooses the filename "file1".

I want to add to the filename, the "html" extension. However, on my code the variable sf contains the full string showed at the bottom 'HTML Files(*.html *.htm)' and I just want "html".

I can handcraft something myself, like having a hash, and creating the string to be passed to the QFileDialog::getSaveFileName call, but I am hoping for a better tirck.

static QString sf;
	QString s = QFileDialog::getSaveFileName(
		this,
		"Choose a file to save to",
		"",
		"Text files (*.txt *.utf8);; HTML Files(*.html *.htm)",
		&sf
	);
 
	if (s.isEmpty())
		return;
 
	bool status;
	QString s_lower = s.toLower();
 
	// what if the users did not specify a suffix...?
	QFileInfo f( s );
	if (f.suffix().isEmpty())
	{
		//
		qDebug("no suffix, adding %s", qPrintable( sf ) );
	}

static QString sf;
	QString s = QFileDialog::getSaveFileName(
		this,
		"Choose a file to save to",
		"",
		"Text files (*.txt *.utf8);; HTML Files(*.html *.htm)",
		&sf
	);

	if (s.isEmpty())
		return;
	
	bool status;
	QString s_lower = s.toLower();
	
	// what if the users did not specify a suffix...?
	QFileInfo f( s );
	if (f.suffix().isEmpty())
	{
		//
		qDebug("no suffix, adding %s", qPrintable( sf ) );
	}

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[marcel]

Go ahead and use a map, or something like that.

Regards

[elcuco]

This is *so* lame... Trolltech needs to fix this issue, this is way wrong... anyway, this is what I am using right now (not very pleased with it, since the constructor now contains some text which should be part of the save function... which will make it hard to debug):

// somewhere in the constructor
	extByMessage[ tr("Text files (*.txt *.utf8)") ] = ".txt";
	extByMessage[ tr("HTML Files (*.html *.htm)") ] = ".html";
 
	QHashIterator<QString, QString> i(extByMessage);
 	while (i.hasNext()) 
 	{
 		i.next();
 		saveMessage += i.key();
 		if (i.hasNext()) 
 			saveMessage += ";;";
	}
 
// the save function
	QString s = QFileDialog::getSaveFileName(
		this,
		tr("Choose a file to save to"),
		lastDir,
		saveMessage,
		&sf
	);
 
	if (s.isEmpty())
		return;
 
	bool status;
 
	// what if the users did not specify a suffix...?
	QFileInfo f( s );
	if (f.suffix().isEmpty())
	{
		// http://www.qtcentre.org/forum/f-qt-programming-2/t-qfiledialoggetsavefilename-default-extension-8503.html
		s += extByMessage[sf];
	}

// somewhere in the constructor
	extByMessage[ tr("Text files (*.txt *.utf8)") ] = ".txt";
	extByMessage[ tr("HTML Files (*.html *.htm)") ] = ".html";
	
	QHashIterator<QString, QString> i(extByMessage);
 	while (i.hasNext()) 
 	{
 		i.next();
 		saveMessage += i.key();
 		if (i.hasNext()) 
 			saveMessage += ";;";
	}

// the save function
	QString s = QFileDialog::getSaveFileName(
		this,
		tr("Choose a file to save to"),
		lastDir,
		saveMessage,
		&sf
	);

	if (s.isEmpty())
		return;
	
	bool status;
	
	// what if the users did not specify a suffix...?
	QFileInfo f( s );
	if (f.suffix().isEmpty())
	{
		// http://www.qtcentre.org/forum/f-qt-programming-2/t-qfiledialoggetsavefilename-default-extension-8503.html
		s += extByMessage[sf];
	}

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