Function xmlStrncmp

ThirdParty/libxml2/vtklibxml2/xmlstring.c:222–237

 */

int
xmlStrncmp(const xmlChar *str1, const xmlChar *str2, int len) {
    if (len <= 0) return(0);
    if (str1 == str2) return(0);
    if (str1 == NULL) return(-1);
    if (str2 == NULL) return(1);
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
    return(strncmp((const char *)str1, (const char *)str2, len));
#else
    do {
        int tmp = *str1++ - *str2;
        if (tmp != 0 || --len == 0) return(tmp);
    } while (*str2++ != 0);
    return 0;
#endif
}

static const xmlChar casemap[256] = {
    0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,