dlls/crtdll/mbstring.c

   1 /*
   2  * CRTDLL multi-byte string functions
   3  *
   4  * Copyright 1999 Alexandre Julliard
   5  */
   6
   7 #include "windef.h"
   8 #include "winbase.h"
   9 #include "crtdll.h"
  10
  11
  12 /*********************************************************************
  13  *           CRTDLL__mbsinc    (CRTDLL.205)
  14  */
  15 LPSTR __cdecl CRTDLL__mbsinc( LPCSTR str )
  16 {
  17     if (IsDBCSLeadByte( *str )) str++;
  18     return (LPSTR)(str + 1);
  19 }
  20
  21
  22 /*********************************************************************
  23  *           CRTDLL__mbslen    (CRTDLL.206)
  24  */
  25 INT __cdecl CRTDLL__mbslen( LPCSTR str )
  26 {
  27     INT len;
  28     for (len = 0; *str; len++, str++) if (IsDBCSLeadByte(str[0]) && str[1]) str++;
  29     return len;
  30 }
  31
  32
  33 /*********************************************************************
  34  *           CRTDLL_mbtowc    (CRTDLL.430)
  35  */
  36 INT __cdecl CRTDLL_mbtowc( WCHAR *dst, LPCSTR str, INT n )
  37 {
  38     if (n <= 0) return 0;
  39     if (!str) return 0;
  40     if (!MultiByteToWideChar( CP_ACP, 0, str, n, dst, 1 )) return 0;
  41     /* return the number of bytes from src that have been used */
  42     if (!*str) return 0;
  43     if (n >= 2 && IsDBCSLeadByte(*str) && str[1]) return 2;
  44     return 1;
  45 }