reactos/lib/crt/stdio/vsprintf.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <stdio.h>
   3 #include <stdarg.h>
   4 #include <limits.h>
   5 #include <internal/file.h>
   6 #include <tchar.h>
   7
   8 int
   9 _vstprintf(_TCHAR *str, const _TCHAR *fmt, va_list ap)
  10 {
  11   FILE f = {0};
  12   int len;
  13
  14   f._flag = _IOWRT|_IOSTRG|_IOBINARY;
  15   f._ptr = (char*)str;
  16   f._cnt = INT_MAX;
  17   f._file = -1;
  18   len = _vftprintf(&f,fmt, ap);
  19   *(_TCHAR*)f._ptr = 0;
  20   return len;
  21 }
  22
  23
  24 int
  25 _vsntprintf(_TCHAR *str, size_t maxlen, const _TCHAR *fmt, va_list ap)
  26 {
  27   FILE f = {0};
  28   int len;
  29
  30   f._flag = _IOWRT|_IOSTRG|_IOBINARY;
  31   f._ptr = (char*)str;
  32   f._cnt = maxlen;
  33   f._file = -1;
  34   len = _vftprintf(&f,fmt, ap);
  35   // what if the buffer is full ??
  36   *(_TCHAR *)f._ptr = 0;
  37   return len;
  38 }