1 /*
2 * Copyright (c) 1988 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 */
17
18 #if defined(LIBC_SCCS) && !defined(lint)
19 static char sccsid[] = "@(#)vfprintf.c 5.2 (Berkeley) 6/27/88";
20 #endif /* LIBC_SCCS and not lint */
21
22 #include "config.h"
23 #if !HAVE_VPRINTF && HAVE_DOPRNT
24 #include <stdio.h>
25 #include <varargs.h>
26
27 int
vfprintf(iop,fmt,ap)28 vfprintf(iop, fmt, ap)
29 FILE *iop;
30 char *fmt;
31 va_list ap;
32 {
33 int len;
34 char localbuf[BUFSIZ];
35
36 if (iop->_flag & _IONBF) {
37 iop->_flag &= ~_IONBF;
38 iop->_ptr = iop->_base = localbuf;
39 len = _doprnt(fmt, ap, iop);
40 (void) fflush(iop);
41 iop->_flag |= _IONBF;
42 iop->_base = NULL;
43 iop->_bufsiz = 0;
44 iop->_cnt = 0;
45 } else
46 len = _doprnt(fmt, ap, iop);
47
48 return (ferror(iop) ? EOF : len);
49 }
50 #endif /* !HAVE_VPRINTF */
51