wmii

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utflen.c (1031B)

      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 utflen(const char *s)
     21 {
     22 	int c;
     23 	long n;
     24 	Rune rune;
     25 
     26 	n = 0;
     27 	for(;;) {
     28 		c = *(uchar*)s;
     29 		if(c < Runeself) {
     30 			if(c == 0)
     31 				return n;
     32 			s++;
     33 		} else
     34 			s += chartorune(&rune, s);
     35 		n++;
     36 	}
     37 }