reactos/lib/string/mbstowcs.c

   1 #define WIN32_NO_STATUS
   2 #include <windows.h>
   3 #define NTOS_MODE_USER
   4 #define _NTSYSTEM_
   5 #include <ndk/umtypes.h>
   6 #include <ndk/rtlfuncs.h>
   7 #include <string.h>
   8
   9 /*
  10  * @implemented
  11  */
  12 int mbtowc (wchar_t *wchar, const char *mbchar, size_t count)
  13 {
  14         NTSTATUS Status;
  15         ULONG Size;
  16
  17         if (wchar == NULL)
  18                 return 0;
  19
  20         Status = RtlMultiByteToUnicodeN (wchar,
  21                                          sizeof(WCHAR),
  22                                          &Size,
  23                                          (char *)mbchar,
  24                                          count);
  25         if (!NT_SUCCESS(Status))
  26                 return -1;
  27
  28         return (int)Size;
  29 }
  30
  31 /*
  32  * @implemented
  33  */
  34 size_t mbstowcs (wchar_t *wcstr, const char *mbstr, size_t count)
  35 {
  36         NTSTATUS Status;
  37         ULONG Size;
  38         ULONG Length;
  39
  40         Length = strlen (mbstr);
  41
  42         if (wcstr == NULL)
  43         {
  44                 RtlMultiByteToUnicodeSize (&Size,
  45                                            (char *)mbstr,
  46                                            Length);
  47
  48                 return (size_t)Size;
  49         }
  50
  51         Status = RtlMultiByteToUnicodeN (wcstr,
  52                                          count,
  53                                          &Size,
  54                                          (char *)mbstr,
  55                                          Length);
  56         if (!NT_SUCCESS(Status))
  57                 return -1;
  58
  59         return (size_t)Size;
  60 }
  61
  62 /* EOF */