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 "winnls.h"
  10 #include "crtdll.h"
  11
  12
  13 /*********************************************************************
  14  *           CRTDLL__mbsinc    (CRTDLL.205)
  15  */
  16 LPSTR __cdecl CRTDLL__mbsinc( LPCSTR str )
  17 {
  18     if (IsDBCSLeadByte( *str )) str++;
  19     return (LPSTR)(str + 1);
  20 }
  21
  22
  23 /*********************************************************************
  24  *           CRTDLL__mbslen    (CRTDLL.206)
  25  */
  26 INT __cdecl CRTDLL__mbslen( LPCSTR str )
  27 {
  28     INT len;
  29     for (len = 0; *str; len++, str++) if (IsDBCSLeadByte(str[0]) && str[1]) str++;
  30     return len;
  31 }
  32
  33
  34 /*********************************************************************
  35  *           CRTDLL_mbtowc    (CRTDLL.430)
  36  */
  37 INT __cdecl CRTDLL_mbtowc( WCHAR *dst, LPCSTR str, INT n )
  38 {
  39     if (n <= 0) return 0;
  40     if (!str) return 0;
  41     if (!MultiByteToWideChar( CP_ACP, 0, str, n, dst, 1 )) return 0;
  42     /* return the number of bytes from src that have been used */
  43     if (!*str) return 0;
  44     if (n >= 2 && IsDBCSLeadByte(*str) && str[1]) return 2;
  45     return 1;
  46 }