Parse XML file

Ruzik

Hellow!
I have XML file:

@<?xml version="1.0" encoding="UTF-8"?>
<data>
<item>C:/Qt</item>
<folder name="Friends">
<item>C:/Qt1</item>
<item>C:/Qt2</item>
</folder>
</data>@

I want to parse it, and add items and folders in my QTreeView
I want to do it:
I call this function:
@RizekFaster::RizekFaster(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)
{
setupUi(this);

QDomDocument domDoc;
QFile file(":/RizekFaster/data.xml");

itemModel = new QStandardItemModel(0,1);
dataTreeView->setModel(itemModel);
if(file.open(QIODevice::ReadOnly))
{
if(domDoc.setContent(&file))
{
QDomElement domElement = domDoc.documentElement();
traverseNode(domElement);
}
file.close();
}
}@
@void RizekFaster::traverseNode(const QDomNode& node, QModelIndex& index, int count)
{
QDomNode domNode = node.firstChild();
while (!domNode.isNull())
{
if(domNode.isElement())
{
QDomElement domElement = domNode.toElement();
if(!domElement.isNull())
{
if(domElement.tagName() == "folder")
{
itemModel->insertRow(count,index);
itemModel->setData(itemModel->index(count,0,index),domElement.attribute("name"));
traverseNode(domNode,itemModel->index(count+1,0,index));
}
if(domElement.tagName() == "item")
{
if(index.isValid())
{
itemModel->insertRow(count,index);
}
else
{
itemModel->insertRow(count);
}
itemModel->setData(itemModel->index(count,0,index),domElement.text());
}
}
}
count++;
domNode = domNode.nextSibling();
//traverseNode(domNode);
}
}@

Function parse this file in this:
!http://s1.hostingkartinok.com/uploads/images/2012/01/6293858b45cc57efc1adddc68e2bcf87.jpg(this)!

RazrFalcon

And what's wrong with it?

Ruzik

It must look like that:
!http://s1.hostingkartinok.com/uploads/images/2012/01/6647962d537c44c52f68782f0ac23813.jpg(that)!

toho71

I think that this man got a tutorial about it in video format.
http://www.voidrealms.com/

I liked this tutorials in the beginning of my QT programming.

giesbert

Hi,

I think the bug is located here:

@
if(domElement.tagName() == "folder")
{
itemModel->insertRow(count,index);
itemModel->setData(itemModel->index(count,0,index),domElement.attribute("name"));
traverseNode(domNode,itemModel->index(count+1,0,index));
}
@

this should be:

@
if(domElement.tagName() == "folder")
{
itemModel->insertRow(count,index);
QModelIndex folderIdx = itemModel->index(count,0,index);
itemModel->setData(folderIdx,domElement.attribute("name"));
traverseNode(domNode,folderIdx);
}
@

Ruzik

I do that and get it:
!http://s1.hostingkartinok.com/uploads/images/2012/01/bc2e0ed4c56e49f4dae844a00440e641.jpg(it)!

RazrFalcon

Maybe your XML must look like:
@<?xml version="1.0" encoding="UTF-8"?>
<data>
<item>C:/Qt</item>
<folder name="Friends">
<item>C:/Qt1</item>
<item>C:/Qt2</item>
</folder>
</data>@

And then:
@if(domElement.tagName() == "folder")
{
itemModel->insertRow(count,index);
itemModel->setData(itemModel->index(count,0,index),domElement.attribute("name"));
traverseNode(domNode,itemModel->index(count+1,0,index));
QDomNodeList list = domNode.childNodes(); // and then add all of it to "Friends" item
}@

Ruzik

But, as i understund, it is will not work with folder in folder

RazrFalcon

You can parce it recursively

Ruzik

Hellow again!
I modificated my code and all must work right:
@void RizekFaster::traverseNode(const QDomNode& node, QModelIndex& index)
{
int count = 0;
QDomNode domNode = node.firstChild();
while(!domNode.isNull())
{
if(domNode.isElement())
{
QDomElement domElement = domNode.toElement();
if(!domElement.isNull())
{
if(domElement.tagName() == "folder")
{
itemModel->insertRow(count,index);
QModelIndex newIndex = itemModel->index(count,0,index);
itemModel->setData(newIndex,domElement.attribute("name",tr("New folder")));
count++;
traverseNode(domElement,newIndex);
}
if(domElement.tagName() == "item")
{
itemModel->insertRow(count,index);
QModelIndex newIndex = itemModel->index(count,0,index);
itemModel->setData(newIndex,domElement.text()); //This cant work in the folders
count++;
}
}
}
domNode = domNode.nextSibling();
}
}@
But in this @QModelIndex newIndex = itemModel->index(count,0,index);@
When index is valid and count is valid(0 when there is no 0 rows in this index's table, and 1 when there is 1 rows in the index's table) the newIndex is not valid. Why is it happened?