newlib/libc/stdio/vdiprintf.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 diprintf.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 _vdiprintf_r (struct _reent *ptr,
  17        int fd,
  18        const char *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 = _vasniprintf_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 #ifndef _REENT_ONLY
  36
  37 int
  38 vdiprintf (int fd,
  39        const char *format,
  40        va_list ap)
  41 {
  42   return _vdiprintf_r (_REENT, fd, format, ap);
  43 }
  44
  45 #endif /* ! _REENT_ONLY */