Extracting sub-tree XML string with TinyXml2 - c++

Question

I want to do the exact same thing as the guy in this question.
I want to convert an XML child element (and all of its children) to an XML string, so if the XML structure were
<parent>
<child>
<value>abc</value>
</child>
<parent>
I want the xml for the child element, e.g.
<child>
<value>abc</value>
</child>
I don't care about whitespace. The problem is that the accepted answer from the other question appears to be out of date, because there is no "Print" method for XMLElement objects. Can I do this with TinyXml2?

Answer 1

I coded up the following function that does the trick for me. Please note that it may have bugs- I am working with very simple XML files, so I won't pretend that I have tested all cases.
void GenXmlString(tinyxml2::XMLElement *element, std::string &str)
{
if (element == NULL) {
return;
}
str.append("<");
str.append(element->Value());
str.append(">");
if (element->GetText() != NULL) {
str.append(element->GetText());
}
tinyxml2::XMLElement *childElement = element->FirstChildElement();
while (childElement != NULL) {
GenXmlString(childElement, str);
childElement = childElement->NextSiblingElement();
}
str.append("</");
str.append(element->Value());
str.append(">");
}