source: trunk/third/nmh/sbr/strcasecmp.c @ 12455

/*
 * strcasecmp.c -- compare strings, ignoring case
 *
 * $Id: strcasecmp.c,v 1.1.1.1 1999-02-07 18:14:10 danw Exp $
 */

#include <h/mh.h>

/*
 * Our version of strcasecmp has to deal with NULL strings.
 * Once that is fixed in the rest of the code, we can use the
 * native version, instead of this one.
 */

int
strcasecmp (const char *s1, const char *s2) 
{
    const unsigned char *us1, *us2;

    us1 = (const unsigned char *) s1,
    us2 = (const unsigned char *) s2;

    if (!us1)
        us1 = "";
    if (!us2)
        us2 = "";
 
    while (tolower(*us1) == tolower(*us2++)) 
        if (*us1++ == '\0')
            return (0);
    return (tolower(*us1) - tolower(*--us2));
}
 

int
strncasecmp (const char *s1, const char *s2, size_t n)
{
    const unsigned char *us1, *us2;

    if (n != 0) { 
        us1 = (const unsigned char *) s1,
        us2 = (const unsigned char *) s2;

        do {  
            if (tolower(*us1) != tolower(*us2++))
                return (tolower(*us1) - tolower(*--us2));
            if (*us1++ == '\0')
                break;  
        } while (--n != 0);
    } 
    return (0);
}