reactos/lib/sdk/crt/printf/_sxprintf.c

   1 /*
   2  * COPYRIGHT:       GNU GPL, see COPYING in the top level directory
   3  * PROJECT:         ReactOS crt library
   4  * FILE:            lib/sdk/crt/printf/swprintf.c
   5  * PURPOSE:         Implementation of swprintf
   6  * PROGRAMMER:      Timo Kreuzer
   7  */
   8
   9 #include <stdio.h>
  10 #include <stdarg.h>
  11 #include <limits.h>
  12 #include <tchar.h>
  13
  14 #ifdef _UNICODE
  15 #define _tstreamout wstreamout
  16 #else
  17 #define _tstreamout streamout
  18 #endif
  19
  20 int _cdecl _tstreamout(FILE *stream, const TCHAR *format, va_list argptr);
  21
  22 int
  23 #if defined(USER32_WSPRINTF) && defined(_M_IX86)
  24 _stdcall
  25 #else
  26 _cdecl
  27 #endif
  28 _sxprintf(
  29     TCHAR *buffer,
  30 #if USE_COUNT
  31    size_t count,
  32 #endif
  33     const TCHAR *format,
  34 #if USE_VARARGS
  35     va_list argptr)
  36 #else
  37     ...)
  38 #endif
  39 {
  40 #if !USE_VARARGS
  41     va_list argptr;
  42 #endif
  43     int result;
  44     FILE stream;
  45
  46     stream._base = (char*)buffer;
  47     stream._ptr = stream._base;
  48     stream._charbuf = 0;
  49 #if USE_COUNT
  50     stream._cnt = count * sizeof(TCHAR);
  51 #else
  52     stream._cnt = INT_MAX;
  53 #endif
  54     stream._bufsiz = 0;
  55     stream._flag = _IOSTRG | _IOWRT;
  56     stream._tmpfname = 0;
  57
  58 #if !USE_VARARGS
  59     va_start(argptr, format);
  60 #endif
  61     result = _tstreamout(&stream, format, argptr);
  62 #if !USE_VARARGS
  63     va_end(argptr);
  64 #endif
  65
  66     /* Only zero terminate if there is enough space left */
  67     if (stream._cnt >= sizeof(TCHAR)) *(TCHAR*)stream._ptr = _T('\0');
  68
  69     return result;
  70 }
  71
  72