strncasecmp2.c

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//
// Part of the ht://Dig package   <http://www.htdig.org/>
// Copyright (c) 1999, 2000, 2001 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU General Public License version 2 or later 
// <http://www.gnu.org/copyleft/gpl.html>
//
// $Id: strncasecmp2_8c-source.html,v 1.1 2008/06/08 10:22:19 sebdiaz Exp $
//

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */

#include <ctype.h>

//*****************************************************************************
//
int strncasecmp(const char *str1, const char *str2, int n)
{
    if (!str1 && !str2)
        return 0;
    if (!str1)
        return 1;
    if (!str2)
        return -1;
    if (n < 0)
        return 0;
    while (n &&
           *str1 &&
           *str2 &&
           tolower((unsigned char)*str1) == tolower((unsigned char)*str2))
    {
        str1++;
        str2++;
        n--;
    }

    return n == 0 ? 0 :
        tolower((unsigned char)*str1) - tolower((unsigned char)*str2);
}

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