Function xmlParseElementStart

ThirdParty/libxml2/vtklibxml2/parser.c:9910–10024

* xmlParseElementStart: * @ctxt: an XML parser context * * Parse the start of an XML element. Returns -1 in case of error, 0 if an * opening tag was parsed, 1 if an empty element was parsed. * * Always consumes '<'. */

 * Always consumes '<'.
 */
static int
xmlParseElementStart(xmlParserCtxtPtr ctxt) {
    int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 2048 : 256;
    const xmlChar *name;
    const xmlChar *prefix = NULL;
    const xmlChar *URI = NULL;
    xmlParserNodeInfo node_info;
    int line;
    xmlNodePtr cur;
    int nbNs = 0;

    if (ctxt->nameNr > maxDepth) {
        xmlFatalErrMsgInt(ctxt, XML_ERR_RESOURCE_LIMIT,
                "Excessive depth in document: %d use XML_PARSE_HUGE option\n",
                ctxt->nameNr);
	xmlHaltParser(ctxt);
	return(-1);
    }

    /* Capture start position */
    if (ctxt->record_info) {
        node_info.begin_pos = ctxt->input->consumed +
                          (CUR_PTR - ctxt->input->base);
	node_info.begin_line = ctxt->input->line;
    }

    if (ctxt->spaceNr == 0)
	spacePush(ctxt, -1);
    else if (*ctxt->space == -2)
	spacePush(ctxt, -1);
    else
	spacePush(ctxt, *ctxt->space);

    line = ctxt->input->line;
#ifdef LIBXML_SAX1_ENABLED
    if (ctxt->sax2)
#endif /* LIBXML_SAX1_ENABLED */
        name = xmlParseStartTag2(ctxt, &prefix, &URI, &nbNs);
#ifdef LIBXML_SAX1_ENABLED
    else
	name = xmlParseStartTag(ctxt);
#endif /* LIBXML_SAX1_ENABLED */
    if (name == NULL) {
	spacePop(ctxt);
        return(-1);
    }
    nameNsPush(ctxt, name, prefix, URI, line, nbNs);
    cur = ctxt->node;

#ifdef LIBXML_VALID_ENABLED
    /*
     * [ VC: Root Element Type ]
     * The Name in the document type declaration must match the element
     * type of the root element.
     */
    if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc &&
        ctxt->node && (ctxt->node == ctxt->myDoc->children))
        ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc);