Parsing the file requires only the name of the file and a single function call, plus error checking. Full code: Appendix C, Code for Keyword Example
xmlDocPtr doc;
xmlNodePtr cur;
doc = xmlParseFile(docname);
if (doc == NULL ) {
fprintf(stderr,"Document not parsed successfully. \n");
return;
}
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
fprintf(stderr,"empty document\n");
xmlFreeDoc(doc);
return;
}
if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {
fprintf(stderr,"document of the wrong type, root node != story");
xmlFreeDoc(doc);
return;
}
| Declare the pointer that will point to your parsed document. | ||||
| Declare a node pointer (you'll need this in order to interact with individual nodes). | ||||
| Check to see that the document was successfully parsed. If it was not, libxml will at this point register an error and stop.
| ||||
| Retrieve the document's root element. | ||||
| Check to make sure the document actually contains something. | ||||
| In our case, we need to make sure the document is the right type. "story" is the root type of the documents used in this tutorial. | ||||