4.3BSD-UWisc/src/lib/libc/stdio/fputs.c

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#if defined(LIBC_RCS) && !defined(lint)
static char rcs_id[] =
	"$Header:$";
#endif
/*
 * RCS info
 *	$Locker:$
 */
/*
 * Copyright (c) 1984 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)fputs.c	5.2 (Berkeley) 3/9/86";
#endif LIBC_SCCS and not lint

#include	<stdio.h>

fputs(s, iop)
register char *s;
register FILE *iop;
{
	register r = 0;
	register c;
	int unbuffered;
	char localbuf[BUFSIZ];

	unbuffered = iop->_flag & _IONBF;
	if (unbuffered) {
		iop->_flag &= ~_IONBF;
		iop->_ptr = iop->_base = localbuf;
		iop->_bufsiz = BUFSIZ;
	}

	while (c = *s++)
		r = putc(c, iop);

	if (unbuffered) {
		fflush(iop);
		iop->_flag |= _IONBF;
		iop->_base = NULL;
		iop->_bufsiz = NULL;
		iop->_cnt = 0;
	}

	return(r);
}