Parsing XML Elements using TinyXML

Question

UPDATE: Still not working :( I have updated the code portion to reflect what I currently have.

This should be a pretty easy question for people who have used TinyXML. I'm attempting to use TinyXML to parse through an XML document and pull out some values. I figured out how to add in the library yesterday, and I have successfully loaded the document (hey, it's a start).

I've been reading through the manual and I can't quite figure out how to pull out individual attributes. After Googling around, I haven't found an example of my specific example, so perhaps someone here who has used TinyXML can help out. Below is a slice of the XML, and where I have started to parse it.

XML:

<EGCs xmlns="http://tempuri.org/XMLSchema.xsd">
  <card type="EGC1">
    <offsets>
      [ ... ]
    </offsets>
  </card>

   <card type="EGC2">
    <offsets>
      [ ... ]
    </offsets>
  </card>
</EGCs>

Loading/parsing code:

TiXmlDocument doc("EGC_Cards.xml");
if(doc.LoadFile())
{
    TiXmlHandle hDoc(&doc);
    TiXmlElement* pElem;
    TiXmlHandle hRoot(0);
    pElem = hDoc.FirstChildElement().Element();
    if (!pElem) return false;
    hRoot = TiXmlHandle(pElem);

    //const char *attribval = hRoot.FirstChild("card").ToElement()->Attribute("card");
    pElem = hDoc.FirstChild("EGCs").Child("card", 1).ToElement();
    if(pElem)
    {
        const char* tmp = pElem->GetText();
        CComboBox *combo = (CComboBox*)GetDlgItem(IDC_EGC_CARD_TYPE);
        combo->AddString(tmp);
    }
}

I want to pull out each card "type" and save it to a string to put into a combobox. How do I access this attribute member?

Jon · Accepted Answer · 2011-06-29 17:01:17Z

10

After a lot of playing around with the code, here is the solution! (With help from HERE)

TiXmlDocument doc("EGC_Cards.xml");
combo = (CComboBox*)GetDlgItem(IDC_EGC_CARD_TYPE);

if(doc.LoadFile())
{
    TiXmlHandle hDoc(&doc);
    TiXmlElement *pRoot, *pParm;
    pRoot = doc.FirstChildElement("EGCs");
    if(pRoot)
    {
        pParm = pRoot->FirstChildElement("card");
        int i = 0; // for sorting the entries
        while(pParm)
        {
            combo->InsertString(i, pParm->Attribute("type"));
            pParm = pParm->NextSiblingElement("card");
            i++;
        }
    }
}
else 
{
    AfxMessageBox("Could not load XML File.");
    return false;
}

edited Jun 29, 2011 at 17:01

answered Jun 29, 2011 at 16:51

Jon

3,21414 gold badges58 silver badges97 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Rob · Accepted Answer · 2011-06-29 15:00:01Z

2

there should be a Attribute method that takes and attribut name as parameter see: http://www.grinninglizard.com/tinyxmldocs/classTiXmlElement.html

from the documentation I see the code would look like:

    hRoot.FirstChildElement("card").ToElement()->Attibute("type");

However for the type of thing you are doing I would use XPATH if at all possible. I have never used it but the TinyXPath project may be helpful if you choose to go that route the link is: http://tinyxpath.sourceforge.net/

Hope this helps.

The documentation I am using to help you from is found at: http://www.grinninglizard.com/tinyxmldocs/hierarchy.html

edited Jun 29, 2011 at 15:00

answered Jun 29, 2011 at 13:42

Rob

2,6292 gold badges24 silver badges30 bronze badges

4 Comments

Jon Over a year ago

Attribute is not a member of TiXmlHandle :\

Rob Over a year ago

@Jon Let me know if that gets you closer.

Jon Over a year ago

I found my own solution. See my answer above.

Rob Over a year ago

Gald that you figured it out. :)

iceaway · Accepted Answer · 2011-06-29 13:47:05Z

1

What you need is to get the attribute type from the element card. So in your code it should be something like:

const char * attribval = hRoot.FirstChild("card").ToElement()->Attribute("card");

edited Jun 29, 2011 at 13:47

answered Jun 29, 2011 at 13:36

iceaway

1,3041 gold badge9 silver badges12 bronze badges

3 Comments

Jon Over a year ago

I tried that, where &someCharArray is CString tmp; I get the following error: 'const char *TiXmlElement::Attribute(const char *,int *) const' : cannot convert parameter 2 from 'const char *' to 'int *'

iceaway Over a year ago

Sorry, that was for getting an integer value. Have a look at the function QueryStringAttribute which is in the TinyXML reference, that should be what you are looking for!

Jon Over a year ago

I'll have a look and report back. Thanks Iceaway.

Collectives™ on Stack Overflow

Parsing XML Elements using TinyXML

3 Answers 3

Comments

4 Comments

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

4 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related