reactos/sdk/lib/crt/string/wcstombs_nt.c

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