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

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/sdk/crt/mbstring/mbsrchr.c
   5  * PURPOSE:     Searches for a character in reverse
   6  * PROGRAMER:   Ariadne
   7  * UPDATE HISTORY:
   8  *              12/04/99: Created
   9  */
  10 #include <stdlib.h>
  11 #include <mbstring.h>
  12
  13 /*
  14  * @implemented
  15  */
  16 unsigned char * _mbsrchr(const unsigned char *src, unsigned int val)
  17 {
  18   unsigned int c;
  19   unsigned char *match = NULL;
  20
  21   if (!src)
  22     return NULL;
  23
  24   while (1)
  25   {
  26     c = _mbsnextc(src);
  27     if (c == val)
  28       match = (unsigned char*)src;
  29     if (!c)
  30       return match;
  31     src += (c > 255) ? 2 : 1;
  32   }
  33 }