BSD 4_3 release

[unix-history] / usr / src / ucb / window / mloop.c

#ifndef lint
static char sccsid[] = "@(#)mloop.c     3.8 4/24/85";
#endif

/*
* Copyright (c) 1983 Regents of the University of California,
* All rights reserved.  Redistribution permitted subject to
* the terms of the Berkeley Software License Agreement.
*/

#include "defs.h"

mloop()
{
       wwrint();               /* catch typeahead before we set ASYNC */
       while (!quit) {
               if (incmd) {
                       docmd();
               } else if (wwcurwin->ww_state != WWS_HASPROC) {
                       setcmd(1);
                       if (wwpeekc() == escapec)
                               (void) wwgetc();
                       error("Process died.");
               } else {
                       register struct ww *w = wwcurwin;
                       register char *p;
                       register n;

                       wwiomux();
                       if (wwibp < wwibq) {
                               for (p = wwibp; p < wwibq && *p != escapec;
                                    p++)
                                       ;
                               if ((n = p - wwibp) > 0) {
                                       if (!w->ww_ispty && w->ww_stopped)
                                               startwin(w);
                                       (void) write(w->ww_pty, wwibp, n);
                                       wwibp = p;
                               }
                               if (wwpeekc() == escapec) {
                                       (void) wwgetc();
                                       setcmd(1);
                               }
                       }
               }
       }
}