| 1 | /** |
| 2 | * This file has no copyright assigned and is placed in the Public Domain. |
| 3 | * This file is part of the mingw-w64 runtime package. |
| 4 | * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| 5 | */ |
| 6 | #define __CRT__NO_INLINE |
| 7 | #include <_mingw.h> |
| 8 | #include <stdarg.h> |
| 9 | #include <wchar.h> |
| 10 | |
| 11 | int __cdecl __ms_vsnwprintf(wchar_t *buffer, size_t n, const wchar_t * format, va_list argptr); |
| 12 | |
| 13 | int __cdecl __ms_vsnwprintf(wchar_t *buffer, size_t n, const wchar_t * format, va_list argptr) |
| 14 | { |
| 15 | int retval; |
| 16 | |
| 17 | /* _vsnwprintf() does not work with zero length buffer |
| 18 | * so count number of characters by _vscwprintf() call */ |
| 19 | if (n == 0) |
| 20 | return _vscwprintf(format, argptr); |
| 21 | |
| 22 | retval = _vsnwprintf(buffer, n, format, argptr); |
| 23 | |
| 24 | /* _vsnwprintf() does not fill trailing null character if there is not place for it */ |
| 25 | if (retval < 0 || (size_t)retval == n) |
| 26 | buffer[n-1] = '\0'; |
| 27 | |
| 28 | /* _vsnwprintf() returns negative number if buffer is too small |
| 29 | * so count number of characters by _vscwprintf() call */ |
| 30 | if (retval < 0) |
| 31 | retval = _vscwprintf(format, argptr); |
| 32 | |
| 33 | return retval; |
| 34 | } |