CODEWITHSUNDEEP
c++xpathlibxml2
Rock
Rock

Reputation: 197

Determine Xpath content via libxml

I found this following XML example but am not sure how the xpath data can be obtained in C++ (besides using boost ptree xmlparser).

/* Evaluate xpath expression */
xpathObj = xmlXPathEvalExpression(xpathExpr, xpathCtx);
if(xpathObj == NULL) {
    fprintf(stderr,"Error: unable to evaluate xpath expression \"%s\"\n", xpathExpr);
    xmlXPathFreeContext(xpathCtx); 
    xmlFreeDoc(doc); 
    return;
}
//cout <<"REsult : "<<xpathObj->stringval<<endl; /* Fails with bus error */

Upvotes: 0

Views: 434

Answers (1)

Jason Viers
Jason Viers

Reputation: 1762

What exactly is contained in xpathObj depends on what your xpath expression matches. If you're looking to just get text out of it, you can iterate over nodes in xpathObj->nodesetval, calling xmlNodeListGetString, as show in the example.

http://www.xmlsoft.org/tutorial/ar01s05.html

Upvotes: 1

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