window/mloop.c

   1 /*      $NetBSD: mloop.c,v 1.6 1997/11/21 08:36:08 lukem 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. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)mloop.c     8.1 (Berkeley) 6/6/93";
  43 #else
  44 __RCSID("$NetBSD: mloop.c,v 1.6 1997/11/21 08:36:08 lukem Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include <sys/param.h>
  49 #include <unistd.h>
  50 #include "defs.h"
  51
  52 void
  53 mloop()
  54 {
  55         while (!quit) {
  56                 if (incmd) {
  57                         docmd();
  58                 } else if (wwcurwin->ww_state != WWS_HASPROC) {
  59                         if (!ISSET(wwcurwin->ww_uflags, WWU_KEEPOPEN))
  60                                 closewin(wwcurwin);
  61                         setcmd(1);
  62                         if (wwpeekc() == escapec)
  63                                 (void) wwgetc();
  64                         error("Process died.");
  65                 } else {
  66                         struct ww *w = wwcurwin;
  67                         char *p;
  68                         int n;
  69
  70                         if (wwibp >= wwibq) {
  71                                 wwibp = wwibq = wwib;
  72                                 wwiomux();
  73                         }
  74                         for (p = wwibp; p < wwibq && wwmaskc(*p) != escapec;
  75                              p++)
  76                                 ;
  77                         if ((n = p - wwibp) > 0) {
  78                                 if (w->ww_type != WWT_PTY &&
  79                                     ISSET(w->ww_pflags, WWP_STOPPED))
  80                                         startwin(w);
  81 #if defined(sun) && !defined(BSD)
  82                                 /* workaround for SunOS pty bug */
  83                                 while (--n >= 0)
  84                                         (void) write(w->ww_pty, wwibp++, 1);
  85 #else
  86                                 (void) write(w->ww_pty, wwibp, n);
  87                                 wwibp = p;
  88 #endif
  89                         }
  90                         if (wwpeekc() == escapec) {
  91                                 (void) wwgetc();
  92                                 setcmd(1);
  93                         }
  94                 }
  95         }
  96 }