reactos/lib/crtdll/stdio/vsprintf.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <msvcrt/stdio.h>
   3 #include <msvcrt/stdarg.h>
   4 #include <limits.h>
   5 #include <msvcrt/internal/file.h>
   6
   7 int
   8 vsprintf(char *str, const char *fmt, va_list ap)
   9 {
  10   FILE f;
  11   int len;
  12
  13   f._flag = _IOWRT|_IOSTRG;
  14   f._ptr = str;
  15   f._cnt = INT_MAX;
  16   f._file = -1;
  17   len = vfprintf(&f,fmt, ap);
  18   *f._ptr = 0;
  19   return len;
  20 }
  21
  22 int
  23 vswprintf(wchar_t *str, const wchar_t *fmt, va_list ap)
  24 {
  25   FILE f;
  26   int len;
  27
  28   f._flag = _IOWRT|_IOSTRG;
  29   f._ptr = (char*)str;
  30   f._cnt = INT_MAX;
  31   f._file = -1;
  32   len = vfwprintf(&f,fmt, ap);
  33   *f._ptr = 0;
  34   return len;
  35 }
  36
  37
  38 int
  39 _vsnprintf(char *str, size_t maxlen, const char *fmt, va_list ap)
  40 {
  41   FILE f;
  42   int len;
  43   f._flag = _IOWRT|_IOSTRG;
  44   f._ptr = str;
  45   f._cnt = maxlen;
  46   f._file = -1;
  47   len = vfprintf(&f,fmt, ap);
  48   // what if the buffer is full ??
  49   *f._ptr = 0;
  50   return len;
  51 }
  52
  53 int
  54 _vsnwprintf(wchar_t *str, size_t maxlen, const wchar_t *fmt, va_list ap)
  55 {
  56   FILE f;
  57   int len;
  58   f._flag = _IOWRT|_IOSTRG;
  59   f._ptr = (char*)str;
  60   f._cnt = maxlen;
  61   f._file = -1;
  62   len = vfwprintf(&f,fmt, ap);
  63   // what if the buffer is full ??
  64   *f._ptr = 0;
  65   return len;
  66 }
  67
  68