4.3BSD-Reno/src/usr.bin/window/mloop.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)mloop.c	3.17 (Berkeley) 6/6/90";
#endif /* not lint */

#include "defs.h"

mloop()
{
	while (!quit) {
		if (incmd) {
			docmd();
		} else if (wwcurwin->ww_state != WWS_HASPROC) {
			if (!wwcurwin->ww_keepopen)
				closewin(wwcurwin);
			setcmd(1);
			if (wwpeekc() == escapec)
				(void) wwgetc();
			error("Process died.");
		} else {
			register struct ww *w = wwcurwin;
			register char *p;
			register n;

			if (wwibp >= wwibq)
				wwiomux();
			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);
			}
		}
	}
}