How to know many subnodes into a parent node in xml?

[Ripley]

Hey guys again.

My next question is knowing about how many subnodes has a main node in an xml file using QXmlStreamReader and save it in a variable to use forward.

example:

QString xml = <?xml version='1.0' encoding='UTF-8'?> 
<parent>
   <child attr="1"/>
   <child attr="2"/>
</parent>

And my code is here:

r.addData(xml)
if(r.readNextStartElement() && r.name() == "parent")
   //Print How many nodes has parent
   // should be 2
}

[JonB]

@Ripley
[I have not used it, but] QXmlStreamReader works by making calls to read the XML in a forward-only direction. The only way to "knowing about how many subnodes has a main node" is to read them, readNextStartElement()/readNext(). So you'll need to read the children from here with something like

while (r.readNextStartElement() && r.name() == "child")

and count them.

P.S.
Like I said I haven't used, but you'll need to do something to distinguish

<child />
<child />

(2 child nodes) versus

<child>
    <child />
</child>

(1 child node). The difference being that in the first case you have met the first <child>'s end element before the next start one, while in the second case you have not. Look at the return result from readNextStartElement() to see this.