RE: Iterating through all nodes and attributes of a wxXmlDocument

Martin,

 

Many thanks for this and apologies for not replying sooner – your message landed in my Junk folder for reasons that are beyond me.

 

Best wishes.

 

Tim

 

 

From: [email protected] <[email protected]> On Behalf Of Maarten Bent
Sent: 25 February 2025 23:44
To: [email protected]
Subject: Re: Iterating through all nodes and attributes of a wxXmlDocument

 

Hi,

Looks like you have infinite iterations in both for-loops. Because you do not assign the next attribute/childNode.
For example, the last component in the second for loop should be: childNode = childNode->GetNext().

Maarten

On 25 Feb 2025 14:25, Tim Burgess wrote:

Hi,

 

It’s been a while since I had to recurse anything, but I can’t see how to do this. I’m trying to construct a wxString that represents the text content of a class derived from wxXmlDocument. Here’s what I have:

 

wxString MyDerivedXMLDocClass::GetTextContent()

              {

                             wxString result = wxEmptyString;

                             wxXmlNode* const root = this->GetRoot();

 

                             if (root == nullptr)

                             {

                                           return wxEmptyString;

                             }

 

                             return GetNodeText(root);

}

 

              wxString MyDerivedXMLDocClass::GetNodeText(wxXmlNode * myNode)

              {

                             wxString result = wxEmptyString;

                             

                             if (myNode->GetType() == wxXML_ELEMENT_NODE)

                             {

                                           result = myNode->GetName();

 

                                           // Get all attributes

                                           for (const wxXmlAttribute* attribute = myNode->GetAttributes(); attribute != NULL; attribute->GetNext())

                                           {

                                                          result += attribute->GetName() + attribute->GetValue() + "\n";

                                           }

                             }

                                           else if (myNode->GetType() == wxXML_TEXT_NODE)

                             {

                                           result += myNode->GetContent() + "\n";

                             }

 

for (wxXmlNode * childNode = myNode->GetChildren(); childNode != NULL; childNode->GetNext())

{

                             result += GetNodeText(childNode);

                                           }

return result;

              }

                             

 

The code throws an exception, but I can’t tell quite where as I’m a blind programmer and the exception blows out my screen reader.

 

Any advice would be most welcome.

 

Tim

 

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