reactos/lib/crtdll/mbstring/mbslwr.c

   1 #include <msvcrt/mbstring.h>
   2 #include <msvcrt/ctype.h>
   3
   4 unsigned int _mbbtolower(unsigned int c)
   5 {
   6         if (!_ismbblead(c) )
   7                 return tolower(c);
   8         return c;
   9 }
  10
  11 // code page 952
  12 #define CASE_DIFF (0x8281 - 0x8260)
  13
  14 unsigned int _mbctolower(unsigned int c)
  15 {
  16     if ((c & 0xFF00) != 0) {
  17         // true multibyte case conversion needed
  18         if (_ismbclower(c))
  19             return c + CASE_DIFF;
  20     } else {
  21      return _mbbtolower(c);
  22     }
  23     return 0;
  24 }
  25
  26 unsigned char * _mbslwr(unsigned char *x)
  27 {
  28     unsigned char  *y=x;
  29
  30     while (*y) {
  31         if (!_ismbblead(*y)) {
  32             *y = tolower(*y);
  33             } else {
  34                 *y=_mbctolower(*(unsigned short *)y);
  35                 y++;
  36         }
  37     }
  38     return x;
  39 }