Function test_regex_pattern

src/options.c:7870–7901

parse 'str' as a regular expression to check whether it's valid; compiled regexp gets thrown away regardless of the outcome */

/* parse 'str' as a regular expression to check whether it's valid;
   compiled regexp gets thrown away regardless of the outcome */
staticfn boolean
test_regex_pattern(const char *str, const char *errmsg)
{
    static const char def_errmsg[] = "NHregex error";
    struct nhregex *match;
    char *re_error_desc, errbuf[BUFSZ];
    boolean retval;

    if (!str)
        return FALSE;
    if (!errmsg)
        errmsg = def_errmsg;

    match = regex_init();
    if (!match) {
        config_error_add("%s", errmsg);
        return FALSE;
    }

    retval = regex_compile(str, match);
    /* get potential error message before freeing regexp and free regexp
       before issuing message in case the error is "ran out of memory"
       since message delivery might need to allocate some memory */
    re_error_desc = !retval ? regex_error_desc(match, errbuf) : 0;
    /* discard regexp; caller will re-parse it after validating other stuff */
    regex_free(match);
    /* if returning failure, tell player */
    if (!retval)
        config_error_add("%s: %s", errmsg, re_error_desc);

    return retval;
}

/* parse 'role' or 'race' or 'gender' or 'alignment' */
staticfn boolean