reactos/lib/sdk/crt/mbstring/mbstrlen.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/sdk/crt/mbstring/mbstrlen.c
   5  * PURPOSE:      Determines the length of a multi byte string, current locale
   6  * PROGRAMERS:
   7  *              Copyright 1999 Alexandre Julliard
   8  *              Copyright 2000 Jon Griffths
   9  *
  10  */
  11
  12 #include <mbstring.h>
  13 #include <stdlib.h>
  14
  15 int isleadbyte(int byte);
  16
  17 /*
  18  * @implemented
  19  */
  20 size_t _mbstrlen( const char *str )
  21 {
  22   size_t len = 0;
  23   while(*str)
  24   {
  25     /* FIXME: According to the documentation we are supposed to test for
  26      * multi-byte character validity. Whatever that means
  27      */
  28     str += isleadbyte(*str) ? 2 : 1;
  29     len++;
  30   }
  31   return len;
  32 }