runestrncmp.c - 9base - revived minimalist port of Plan 9 userland to Unix
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       runestrncmp.c (1044B)
       ---
            1 /*
            2  * The authors of this software are Rob Pike and Ken Thompson.
            3  *              Copyright (c) 2002 by Lucent Technologies.
            4  * Permission to use, copy, modify, and distribute this software for any
            5  * purpose without fee is hereby granted, provided that this entire notice
            6  * is included in all copies of any software which is or includes a copy
            7  * or modification of this software and in all copies of the supporting
            8  * documentation for such software.
            9  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
           10  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
           11  * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
           12  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
           13  */
           14 #include <stdarg.h>
           15 #include <string.h>
           16 #include "plan9.h"
           17 #include "utf.h"
           18 
           19 int
           20 runestrncmp(Rune *s1, Rune *s2, long n)
           21 {
           22         Rune c1, c2;
           23 
           24         while(n > 0) {
           25                 c1 = *s1++;
           26                 c2 = *s2++;
           27                 n--;
           28                 if(c1 != c2) {
           29                         if(c1 > c2)
           30                                 return 1;
           31                         return -1;
           32                 }
           33                 if(c1 == 0)
           34                         break;
           35         }
           36         return 0;
           37 }