How to Parse the XML structure data in CPP while going and accessing each node?

Question

I'm very new to XML parse in C++. I want to parse the XML. So, I'm using the PugiXML library. I mainly want to get the values from each of the children nodes.

Here, is the sample code till here I have written, then I don't understand what to do next.

void XML()
{
    //Suppose I'm getting XML data in the form of a string, and store in string variable **xmlString**

    //Using 3rd party lib Pugixml parser want to store all the **xmlString data in doc**.
    pugi::xml_document doc;
    pugi::xml_parse_result result = doc.load_string(xmlString.c_str());

    // I want value will store the data "Sheet1" as per the syntax. But somehow, doc store the value till here **<?xml version = "1.0" encoding = "UTF-8"?><Graphics**
    string  value = doc.child("Graphics").child("SheetInfo").attribute("SheetName").value();
}

Here is the sample XML data which is stored in the xmlString.

<?xml version = "1.0" encoding = "UTF-8"?>
<Graphics>
    <SheetInfo>
        <SheetName>Sheet1</SheetName>
        <Circle>
            <IGDSElement>
                <Type>89</Type>
            </IGDSElement>
            <cPt_x>0.212050</cPt_x>
            <cPt_y>0.148307</cPt_y>
            <orientation>0</orientation>
        </Circle>
    <SheetInfo>
<Graphics>

Please help me to parse this XML format data while going to each node.

score 0 · Answer 1 · answered Apr 20 '21 at 08:22

If you want to visit each node, you can traverse it with a for loop:

    for(const auto& child : doc.child("Graphics"))
        cout << child.child_value() << endl;

To find specific node you can use XPath. Here are examples on various things commonly needed for XML parsing.

How to Parse the XML structure data in CPP while going and accessing each node?

1 Answers1