+
−/* Formatted output to a stream.
+
−   Copyright (C) 2004, 2006-2011 Free Software Foundation, Inc.
+
−
+
−   This program is free software: you can redistribute it and/or modify
+
−   it under the terms of the GNU General Public License as published by
+
−   the Free Software Foundation; either version 3 of the License, or
+
−   (at your option) any later version.
+
−
+
−   This program is distributed in the hope that it will be useful,
+
−   but WITHOUT ANY WARRANTY; without even the implied warranty of
+
−   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+
−   GNU General Public License for more details.
+
−
+
−   You should have received a copy of the GNU General Public License
+
−   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
−
+
−#ifdef HAVE_CONFIG_H
+
−# include <config.h>
+
−#endif
+
−
+
−/* Specification.  */
+
−#include <stdio.h>
+
−
+
−#include <errno.h>
+
−#include <limits.h>
+
−#include <stdarg.h>
+
−#include <stdlib.h>
+
−
+
−#include "fseterr.h"
+
−#include "vasnprintf.h"
+
−
+
−/* Print formatted output to the stream FP.
+
−   Return string length of formatted string.  On error, return a negative
+
−   value.  */
+
−int
+
−vfprintf (FILE *fp, const char *format, va_list args)
+
−{
+
−  char buf[2000];
+
−  char *output;
+
−  size_t len;
+
−  size_t lenbuf = sizeof (buf);
+
−
+
−  output = vasnprintf (buf, &lenbuf, format, args);
+
−  len = lenbuf;
+
−
+
−  if (!output)
+
−    {
+
−      fseterr (fp);
+
−      return -1;
+
−    }
+
−
+
−  if (fwrite (output, 1, len, fp) < len)
+
−    {
+
−      if (output != buf)
+
−        {
+
−          int saved_errno = errno;
+
−          free (output);
+
−          errno = saved_errno;
+
−        }
+
−      return -1;
+
−    }
+
−
+
−  if (output != buf)
+
−    free (output);
+
−
+
−  if (len > INT_MAX)
+
−    {
+
−      errno = EOVERFLOW;
+
−      fseterr (fp);
+
−      return -1;
+
−    }
+
−
+
−  return len;
+
−}