89852155b183ad522b6d58800d0bf7f512d79ca6
[dragonfly.git] / usr.bin / window / mloop.c
1 /*      $NetBSD: mloop.c,v 1.8 2003/08/07 11:17:27 agc 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
38 static char sccsid[] = "@(#)mloop.c     8.1 (Berkeley) 6/6/93";
39 #else
40 __RCSID("$NetBSD: mloop.c,v 1.8 2003/08/07 11:17:27 agc Exp $");
41 #endif
42 #endif /* not lint */
43
44 #include <sys/param.h>
45 #include <unistd.h>
46 #include "defs.h"
47
48 void
49 mloop(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 }