Function xmlParseLookupString

ThirdParty/libxml2/vtklibxml2/parser.c:10818–10850

* xmlParseLookupString: * @ctxt: an XML parser context * @startDelta: delta to apply at the start * @str: string * @strLen: length of string * * Check whether the input buffer contains a string. */

 * Check whether the input buffer contains a string.
 */
static const xmlChar *
xmlParseLookupString(xmlParserCtxtPtr ctxt, size_t startDelta,
                     const char *str, size_t strLen) {
    const xmlChar *cur, *term;

    if (ctxt->checkIndex == 0) {
        cur = ctxt->input->cur + startDelta;
    } else {
        cur = ctxt->input->cur + ctxt->checkIndex;
    }

    term = BAD_CAST strstr((const char *) cur, str);
    if (term == NULL) {
        const xmlChar *end = ctxt->input->end;
        size_t index;

        /* Rescan (strLen - 1) characters. */
        if ((size_t) (end - cur) < strLen)
            end = cur;
        else
            end -= strLen - 1;
        index = end - ctxt->input->cur;
        if (index > LONG_MAX) {
            ctxt->checkIndex = 0;
            return(ctxt->input->end - strLen);
        }
        ctxt->checkIndex = index;
    } else {
        ctxt->checkIndex = 0;
    }

    return(term);
}

/**
 * xmlParseLookupCharData: