QSettings working on a QByteArray

[luca]

Hi all,

is there a way to use a QSettings from a file stored in a QByteArray?

My idea is to put a lot of setting file in a DB and retrieve it with a query when needed. The query return me a QString or a QByteArray containing the setting file.

Actually I must pass the QString to a QFile save it on a temporary file and pass the filename to a QSettings to use it:

@
QSettings setting("/tmp_dir/tmp_file.conf");
@

It should be useful to pass the QByteArray to the QSettings constructor.

[sabrog]

You can use hard and long way - create custom implementation for QAbstractFileEngine and QAbstractFileEngineHandler. "Here":http://www.qtcentre.org/attachment.php?attachmentid=3501&d=1248628685 example from Wysota.

Then you can just use own "prefix" like:

@QSettings setting("MyFileEngineSystem:/file.conf");@

[luca]

[quote author="SABROG" date="1284108063"]You can use hard and long way - create custom implementation for QAbstractFileEngine and QAbstractFileEngineHandler. "Here":http://www.qtcentre.org/attachment.php?attachmentid=3501&d=1248628685 example from Wysota.

Then you can just use own "prefix" like:

@QSettings setting("MyFileEngineSystem:/file.conf");@[/quote]

Thanks,

Isn't there any easy and short way? :-)

[alexander]

try this:

@ bool readXmlFile(QIODevice &device, QSettings::SettingsMap &map);
bool writeXmlFile(QIODevice &device, const QSettings::SettingsMap &map);

int main(int argc, char *argv[])
{
const QSettings::Format XmlFormat =
QSettings::registerFormat("xml", readXmlFile, writeXmlFile);

 QSettings settings(XmlFormat, QSettings::UserScope, "MySoft",
                    "Star Runner");

 ...

}@