Backing up a file.

[munna]

Hi,

I have a application that uses Sqlite to store data and also the option to backup this data.

I wrote the following code but is not working.

QString filter = tr("Database Backup (*.dbb)");
	QString fileName = QFileDialog::getSaveFileName(this,tr("Backup Database"),QDir::homePath(),filter);
 
if(!fileName.isEmpty()){
	QString filePath = QDir::homePath();
	filePath.append("/database");
	QFile sourceFile(filePath);
	if(!sourceFile.open(QIODevice::ReadOnly)){
               //Error Message
		return;
	}
	QFile destFile(fileName);
	if(!destFile.open(QIODevice::WriteOnly)){
		//Error Message
		return;
	}
	QTextStream sourceStream(&sourceFile);
	QTextStream destStream(&destFile);
        QByteArray data;
	sourceStream>>data;
	data = qCompress(data);
	destStream<<data;
	sourceFile.close();
	destFile.close();
}

QString filter = tr("Database Backup (*.dbb)");
	QString fileName = QFileDialog::getSaveFileName(this,tr("Backup Database"),QDir::homePath(),filter);

if(!fileName.isEmpty()){
	QString filePath = QDir::homePath();
	filePath.append("/database");
	QFile sourceFile(filePath);
	if(!sourceFile.open(QIODevice::ReadOnly)){
               //Error Message
		return;
	}
	QFile destFile(fileName);
	if(!destFile.open(QIODevice::WriteOnly)){
		//Error Message
		return;
	}
	QTextStream sourceStream(&sourceFile);
	QTextStream destStream(&destFile);
        QByteArray data;
	sourceStream>>data;
	data = qCompress(data);
	destStream<<data;
	sourceFile.close();
	destFile.close();
}

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The destination file is getting created but it's size is only 10 Bytes.

Can someone please tell me what is wrong with the code ?

Thanks a lot.