sys/src/libc/port/utflen.c

   1 #include <u.h>
   2 #include <libc.h>
   3
   4 int
   5 utflen(char *s)
   6 {
   7         int c;
   8         long n;
   9         Rune rune;
  10
  11         n = 0;
  12         for(;;) {
  13                 c = *(uchar*)s;
  14                 if(c < Runeself) {
  15                         if(c == 0)
  16                                 return n;
  17                         s++;
  18                 } else
  19                         s += chartorune(&rune, s);
  20                 n++;
  21         }
  22 }