lib/msvcrt/mbstring/mbsicoll.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/msvcrt/mbstring/mbsicoll.c
   5  * PURPOSE:
   6  * PROGRAMER:   Boudewijn Dekker
   7  * UPDATE HISTORY:
   8  *              12/04/99: Created
   9  */
  10 #include <msvcrt/mbstring.h>
  11 #include <msvcrt/mbctype.h>
  12 #include <msvcrt/ctype.h>
  13
  14 int colldif(unsigned short c1, unsigned short c2);
  15 int _mbsicoll(const unsigned char *str1, const unsigned char *str2)
  16 {
  17         unsigned char *s1 = (unsigned char *)str1;
  18         unsigned char *s2 = (unsigned char *)str2;
  19
  20         unsigned short *short_s1, *short_s2;
  21
  22         int l1, l2;
  23
  24         while ( *s1 != 0 ) {
  25
  26                 if (*s1 == 0)
  27                         break;
  28
  29                 l1 = _ismbblead(*s1);
  30                 l2 = _ismbblead(*s2);
  31                 if ( !l1 &&  !l2  ) {
  32
  33                         if (toupper(*s1) != toupper(*s2))
  34                                 return colldif(*s1, *s2);
  35                         else {
  36                                 s1 += 1;
  37                                 s2 += 1;
  38                         }
  39                 }
  40                 else if ( l1 && l2 ){
  41                         short_s1 = (unsigned short *)s1;
  42                         short_s2 = (unsigned short *)s2;
  43                         if ( _mbctoupper(*short_s1) != _mbctoupper(*short_s2 ))
  44                                 return colldif(*short_s1, *short_s2);
  45                         else {
  46                                 s1 += 2;
  47                                 s2 += 2;
  48
  49                         }
  50                 }
  51                 else
  52                         return colldif(*s1, *s2);
  53         } ;
  54         return 0;
  55 }