/* * Copyright (c) 1988 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)vfprintf.c 5.2 (Berkeley) 6/27/88"; #endif /* LIBC_SCCS and not lint */ #include #include int vfprintf(iop, fmt, ap) FILE *iop; char *fmt; va_list ap; { int len; char localbuf[BUFSIZ]; if (iop->_flag & _IONBF) { iop->_flag &= ~_IONBF; iop->_ptr = iop->_base = localbuf; len = _doprnt(fmt, ap, iop); (void) fflush(iop); iop->_flag |= _IONBF; iop->_base = NULL; iop->_bufsiz = 0; iop->_cnt = 0; } else len = _doprnt(fmt, ap, iop); return (ferror(iop) ? EOF : len); }