newlib/libc/stdio/vdprintf.c

   1 /* Copyright 2005, 2007 Shaun Jackman
   2  * Permission to use, copy, modify, and distribute this software
   3  * is freely granted, provided that this notice is preserved.
   4  */
   5 /* doc in dprintf.c */
   6
   7 #include <_ansi.h>
   8 #include <reent.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdarg.h>
  13 #include "local.h"
  14
  15 int
  16 _vdprintf_r (struct _reent *ptr,
  17        int fd,
  18        const char *__restrict format,
  19        va_list ap)
  20 {
  21   char *p;
  22   char buf[512];
  23   size_t n = sizeof buf;
  24
  25   _REENT_SMALL_CHECK_INIT (ptr);
  26   p = _vasnprintf_r (ptr, buf, &n, format, ap);
  27   if (!p)
  28     return -1;
  29   n = _write_r (ptr, fd, p, n);
  30   if (p != buf)
  31     _free_r (ptr, p);
  32   return n;
  33 }
  34
  35 #ifdef _NANO_FORMATTED_IO
  36 int
  37 _vdiprintf_r (struct _reent *, int, const char *, __VALIST)
  38        _ATTRIBUTE ((__alias__("_vdprintf_r")));
  39 #endif
  40
  41 #ifndef _REENT_ONLY
  42
  43 int
  44 vdprintf (int fd,
  45        const char *__restrict format,
  46        va_list ap)
  47 {
  48   return _vdprintf_r (_REENT, fd, format, ap);
  49 }
  50
  51 #ifdef _NANO_FORMATTED_IO
  52 int
  53 vdiprintf (int, const char *, __VALIST)
  54        _ATTRIBUTE ((__alias__("vdprintf")));
  55 #endif
  56 #endif /* ! _REENT_ONLY */