Function htmlParseComment

ThirdParty/libxml2/vtklibxml2/HTMLparser.c:3353–3464

* htmlParseComment: * @ctxt: an HTML parser context * * Parse an HTML comment */

 * Parse an HTML comment
 */
static void
htmlParseComment(htmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len;
    int size = HTML_PARSER_BUFFER_SIZE;
    int q, ql;
    int r, rl;
    int cur, l;
    int next, nl;
    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
                    XML_MAX_HUGE_LENGTH :
                    XML_MAX_TEXT_LENGTH;
    xmlParserInputState state;

    /*
     * Check that there is a comment right here.
     */
    if ((RAW != '<') || (NXT(1) != '!') ||
        (NXT(2) != '-') || (NXT(3) != '-')) return;

    state = ctxt->instate;
    ctxt->instate = XML_PARSER_COMMENT;
    SKIP(4);
    buf = (xmlChar *) xmlMallocAtomic(size);
    if (buf == NULL) {
        htmlErrMemory(ctxt);
	return;
    }
    len = 0;
    buf[len] = 0;
    q = CUR_CHAR(ql);
    if (q == 0)
        goto unfinished;
    if (q == '>') {
        htmlParseErr(ctxt, XML_ERR_COMMENT_ABRUPTLY_ENDED, "Comment abruptly ended", NULL, NULL);
        cur = '>';
        goto finished;
    }
    NEXTL(ql);
    r = CUR_CHAR(rl);
    if (r == 0)
        goto unfinished;
    if (q == '-' && r == '>') {
        htmlParseErr(ctxt, XML_ERR_COMMENT_ABRUPTLY_ENDED, "Comment abruptly ended", NULL, NULL);
        cur = '>';
        goto finished;
    }
    NEXTL(rl);
    cur = CUR_CHAR(l);
    while ((cur != 0) &&
           ((cur != '>') ||
	    (r != '-') || (q != '-'))) {
	NEXTL(l);
	next = CUR_CHAR(nl);

	if ((q == '-') && (r == '-') && (cur == '!') && (next == '>')) {
	  htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
		       "Comment incorrectly closed by '--!>'", NULL, NULL);