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/*

 * Copyright (c) 1990, 2007 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/* doc in viprintf.c */

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "%W% (Berkeley) %G%";

#endif /* LIBC_SCCS and not lint */

#include <_ansi.h>

#include <reent.h>

#include <stdio.h>

#include <limits.h>

#include <stdarg.h>

#include <errno.h>

#ifndef _REENT_ONLY

int

_DEFUN(vsniprintf, (str, size, fmt, ap),

       char *str        _AND

       size_t size      _AND

       const char *fmt _AND

       va_list ap)

{

  return _vsniprintf_r (_REENT, str, size, fmt, ap);

}

#endif /* !_REENT_ONLY */

int

_DEFUN(_vsniprintf_r, (ptr, str, size, fmt, ap),

       struct _reent *ptr _AND

       char *str          _AND

       size_t size        _AND

       const char *fmt   _AND

       va_list ap)

{

  int ret;

  FILE f;

  if (size > INT_MAX)

    {

      ptr->_errno = EOVERFLOW;

      return EOF;

    }

  f._flags = __SWR | __SSTR;

  f._bf._base = f._p = (unsigned char *) str;

  f._bf._size = f._w = (size > 0 ? size - 1 : 0);

  f._file = -1;  /* No file. */

  ret = _svfiprintf_r (ptr, &f, fmt, ap);

  if (ret < EOF)

    ptr->_errno = EOVERFLOW;

  if (size > 0)

    *f._p = 0;

  return ret;

}