Function xmlParseStringName

ThirdParty/libxml2/vtklibxml2/parser.c:3573–3646

 */

static xmlChar *
xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
    xmlChar buf[XML_MAX_NAMELEN + 5];
    xmlChar *ret;
    const xmlChar *cur = *str;
    int len = 0, l;
    int c;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_TEXT_LENGTH :
                    XML_MAX_NAME_LENGTH;

    c = CUR_SCHAR(cur, l);
    if (!xmlIsNameStartChar(ctxt, c)) {
	return(NULL);
    }

    COPY_BUF(buf, len, c);
    cur += l;
    c = CUR_SCHAR(cur, l);
    while (xmlIsNameChar(ctxt, c)) {
	COPY_BUF(buf, len, c);
	cur += l;
	c = CUR_SCHAR(cur, l);
	if (len >= XML_MAX_NAMELEN) { /* test bigentname.xml */
	    /*
	     * Okay someone managed to make a huge name, so he's ready to pay
	     * for the processing speed.
	     */
	    xmlChar *buffer;
	    int max = len * 2;

	    buffer = (xmlChar *) xmlMallocAtomic(max);
	    if (buffer == NULL) {
	        xmlErrMemory(ctxt);
		return(NULL);
	    }
	    memcpy(buffer, buf, len);
	    while (xmlIsNameChar(ctxt, c)) {
		if (len + 10 > max) {
		    xmlChar *tmp;

		    max *= 2;
		    tmp = (xmlChar *) xmlRealloc(buffer, max);
		    if (tmp == NULL) {
			xmlErrMemory(ctxt);
			xmlFree(buffer);
			return(NULL);
		    }
		    buffer = tmp;
		}
		COPY_BUF(buffer, len, c);
		cur += l;
		c = CUR_SCHAR(cur, l);
                if (len > maxLength) {
                    xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
                    xmlFree(buffer);
                    return(NULL);
                }