text: /*
   * 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 = _vfiprintf_r (ptr, &f, fmt, ap);
    if (ret < EOF)
      ptr->_errno = EOVERFLOW;
    if (size > 0)
      *f._p = 0;
    return ret;
  }
  