reactos/lib/string/wcstombs.c

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