Function fuzzymatch

src/hacklib.c:784–808

compare two strings for equality, ignoring the presence of specified characters (typically whitespace) and possibly ignoring case */

/* compare two strings for equality, ignoring the presence of specified
   characters (typically whitespace) and possibly ignoring case */
boolean
fuzzymatch(
    const char *s1, const char *s2,
    const char *ignore_chars,
    boolean caseblind)
{
    char c1, c2;

    do {
        while ((c1 = *s1++) != '\0' && strchr(ignore_chars, c1) != 0)
            continue;
        while ((c2 = *s2++) != '\0' && strchr(ignore_chars, c2) != 0)
            continue;
        if (!c1 || !c2)
            break; /* stop when end of either string is reached */

        if (caseblind) {
            c1 = lowc(c1);
            c2 = lowc(c2);
        }
    } while (c1 == c2);

    /* match occurs only when the end of both strings has been reached */
    return (boolean) (!c1 && !c2);
}

/*
 * Time routines