1/*	$NetBSD: mloop.c,v 1.7 2002/06/14 01:06:53 wiz Exp $	*/
2
3/*
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Edward Wang at The University of California, Berkeley.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)mloop.c	8.1 (Berkeley) 6/6/93";
39#else
40__RCSID("$NetBSD: mloop.c,v 1.7 2002/06/14 01:06:53 wiz Exp $");
41#endif
42#endif /* not lint */
43
44#include <sys/param.h>
45#include <unistd.h>
46#include "defs.h"
47
48void
49mloop(void)
50{
51	while (!quit) {
52		if (incmd) {
53			docmd();
54		} else if (wwcurwin->ww_state != WWS_HASPROC) {
55			if (!ISSET(wwcurwin->ww_uflags, WWU_KEEPOPEN))
56				closewin(wwcurwin);
57			setcmd(1);
58			if (wwpeekc() == escapec)
59				(void) wwgetc();
60			error("Process died.");
61		} else {
62			struct ww *w = wwcurwin;
63			char *p;
64			int n;
65
66			if (wwibp >= wwibq) {
67				wwibp = wwibq = wwib;
68				wwiomux();
69			}
70			for (p = wwibp; p < wwibq && wwmaskc(*p) != escapec;
71			     p++)
72				;
73			if ((n = p - wwibp) > 0) {
74				if (w->ww_type != WWT_PTY &&
75				    ISSET(w->ww_pflags, WWP_STOPPED))
76					startwin(w);
77#if defined(sun) && !defined(BSD)
78				/* workaround for SunOS pty bug */
79				while (--n >= 0)
80					(void) write(w->ww_pty, wwibp++, 1);
81#else
82				(void) write(w->ww_pty, wwibp, n);
83				wwibp = p;
84#endif
85			}
86			if (wwpeekc() == escapec) {
87				(void) wwgetc();
88				setcmd(1);
89			}
90		}
91	}
92}
93