Extracting xml fragment from QXmlStreamReader

[Gopala Krishna]

I recently started using xml in my app and i fell prey to QXmlStream* classes.
So far i found it really good and easy, but i came across a situation where i had to extract a fragment of xml from a xml document.
To be precise i want to extract svg embedded in xml so that i can construct QGraphicsSvgItems.
Is there a way to do this using QXmlStreamReader class ?
Currently i use dom to get the fragment but this is tedious as well as double work.
I am also open to suggestion regarding any special kind of embedding svg to enable it to be extracted .

P.S: Opening an external svg is already possible, i just need to add an option for embedded svgs.

[Gopala Krishna]

No other solution is it ?
Ok atleast i'll remove this question from unanswered list by posting now ;)

[jacek]

Ok atleast i'll remove this question from unanswered list by posting now ;)
Hey, that's cheating! ;)

Maybe you should send a suggestion to the Trolls that such functionality might be useful?

[Gopala Krishna]

Hey, that's cheating! ;)

Maybe you should send a suggestion to the Trolls that such functionality might be useful?

Ok, i tried to suggest but i can only report bug in task-tracker. Is suggestions only acceptable from customers ?

[jpn]

Is suggestions only acceptable from customers ?
No, anyone can send both bug reports and suggestions. :)

[Gopala Krishna]

Good that i haven't yet suggested because i found a solution for this.. Yippe!!

Here is the code for anyone interested..

QString readXmlFragment(QXmlStreamReader *reader)
{
// Make sure reader is at starting element
Q_ASSERT(reader->isStartElement());

//The string to be returned containing xml fragment.
QString retVal;

QXmlStreamWriter writer(&retVal);
writer.setCodec("UTF-8");

//write the current token which is start element.
writer.writeCurrentToken(*reader);

//Store the tag name of start element.
QString startName = reader->name().toString();

// Now keep writing all tokens till end tag corresponding to startName is obtained.
while(!reader->atEnd()) {
reader->readNext();
if(reader->isEndElement() && reader->name() == startName)
break;
writer.writeCurrentToken(*reader);
}
//write the end tag now
writer.writeCurrentToken(*reader);

//return the fragment
return retVal;
}


There seems to be one small quirk though. The empty elements of type

<sometag a="A" /> will be written as
<sometag a="A"></sometag>
which should not be a problem in 99.99% of cases ;)