reactos/lib/string/mbstowcs.c

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