Remove window(1) from the base system.

Some time ago Tom Rhodes sent me an email that he was willing to perform
various cleanups to the window(1) source code. After some discussion, we
both decided the best thing to do, was to move window(1) to the ports
tree. The application isn't used a lot nowadays, mainly because it has
been superseeded by screen, tmux, etc.

A couple of hours ago Tom committed window(1) to ports (misc/window), so
I'm removing it from the tree. I don't think people will really miss it,
but I'm describing the change in UPDATING anyway.

Discussed with:	trhodes, pav, kib
Approved by:	re

1 files changed, 0 insertions, 205 deletions

diff --git a/usr.bin/window/wwiomux.c b/usr.bin/window/wwiomux.c
deleted file mode 100644
index 7803557c16b6..000000000000
--- a/usr.bin/window/wwiomux.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- * Copyright (c) 1983, 1993
- *	The 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, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)wwiomux.c	8.1 (Berkeley) 6/6/93";
-static char rcsid[] =
-  "$FreeBSD$";
-#endif /* not lint */
-
-#include "ww.h"
-#include <sys/time.h>
-#include <sys/types.h>
-#if !defined(OLD_TTY) && !defined(TIOCPKT_DATA)
-#include <sys/ioctl.h>
-#endif
-#include <fcntl.h>
-
-/*
- * Multiple window output handler.
- * The idea is to copy window outputs to the terminal, via the
- * display package.  We try to give wwcurwin highest priority.
- * The only return conditions are when there is keyboard input
- * and when a child process dies, which are serviced by signal
- * catchers (wwrint() and wwchild()).
- * When there's nothing to do, we sleep in a select().
- * This can be done better with interrupt driven io.  But that's
- * not supported on ptys, yet.
- * The history of this routine is interesting.
- */
-wwiomux()
-{
-	register struct ww *w;
-	fd_set imask;
-	register n;
-	register char *p;
-	char c;
-	struct timeval tv;
-	char noblock = 0;
-
-	for (;;) {
-		if (wwinterrupt()) {
-			wwclrintr();
-			return;
-		}
-
-		FD_ZERO(&imask);
-		n = -1;
-		for (w = wwhead.ww_forw; w != &wwhead; w = w->ww_forw) {
-			if (w->ww_pty < 0)
-				continue;
-			if (w->ww_obq < w->ww_obe) {
-				if (w->ww_pty > n)
-					n = w->ww_pty;
-				FD_SET(w->ww_pty, &imask);
-			}
-			if (w->ww_obq > w->ww_obp && !w->ww_stopped)
-				noblock = 1;
-		}
-
-		if (!noblock) {
-			if (wwcurwin != 0)
-				wwcurtowin(wwcurwin);
-			wwupdate();
-			wwflush();
-			(void) setjmp(wwjmpbuf);
-			wwsetjmp = 1;
-			if (wwinterrupt()) {
-				wwsetjmp = 0;
-				wwclrintr();
-				return;
-			}
-			/*
-			 * Defensive code.  If somebody else (for example,
-			 * wall) clears the ASYNC flag on us, we will block
-			 * forever.  So we need a finite timeout and set
-			 * the flag again.  Anything more clever will probably
-			 * need even more system calls.  (This is a bug
-			 * in the kernel.)
-			 * I don't like this one bit.
-			 */
-			(void) fcntl(0, F_SETFL, wwnewtty.ww_fflags);
-			tv.tv_sec = 30;
-			tv.tv_usec = 0;
-		} else {
-			tv.tv_sec = 0;
-			tv.tv_usec = 10000;
-		}
-		wwnselect++;
-		n = select(n + 1, &imask, (fd_set *)0, (fd_set *)0, &tv);
-		wwsetjmp = 0;
-		noblock = 0;
-
-		if (n < 0)
-			wwnselecte++;
-		else if (n == 0)
-			wwnselectz++;
-		else
-			for (w = wwhead.ww_forw; w != &wwhead; w = w->ww_forw) {
-				if (w->ww_pty < 0 ||
-				    !FD_ISSET(w->ww_pty, &imask))
-					continue;
-				wwnwread++;
-				p = w->ww_obq;
-				if (w->ww_ispty) {
-					if (p == w->ww_ob) {
-						w->ww_obp++;
-						w->ww_obq++;
-					} else
-						p--;
-					c = *p;
-				}
-				n = read(w->ww_pty, p, w->ww_obe - p);
-				if (n < 0) {
-					wwnwreade++;
-					(void) close(w->ww_pty);
-					w->ww_pty = -1;
-				} else if (n == 0) {
-					wwnwreadz++;
-					(void) close(w->ww_pty);
-					w->ww_pty = -1;
-				} else if (!w->ww_ispty) {
-					wwnwreadd++;
-					wwnwreadc += n;
-					w->ww_obq += n;
-				} else if (*p == TIOCPKT_DATA) {
-					n--;
-					wwnwreadd++;
-					wwnwreadc += n;
-					w->ww_obq += n;
-				} else {
-					wwnwreadp++;
-					if (*p & TIOCPKT_STOP)
-						w->ww_stopped = 1;
-					if (*p & TIOCPKT_START)
-						w->ww_stopped = 0;
-					if (*p & TIOCPKT_FLUSHWRITE) {
-						w->ww_stopped = 0;
-						w->ww_obq = w->ww_obp =
-							w->ww_ob;
-					}
-				}
-				if (w->ww_ispty)
-					*p = c;
-			}
-		/*
-		 * Try the current window first, if there is output
-		 * then process it and go back to the top to try again.
-		 * This can lead to starvation of the other windows,
-		 * but presumably that what we want.
-		 * Update will eventually happen when output from wwcurwin
-		 * dies down.
-		 */
-		if ((w = wwcurwin) != 0 && w->ww_pty >= 0 &&
-		    w->ww_obq > w->ww_obp && !w->ww_stopped) {
-			n = wwwrite(w, w->ww_obp, w->ww_obq - w->ww_obp);
-			if ((w->ww_obp += n) == w->ww_obq)
-				w->ww_obq = w->ww_obp = w->ww_ob;
-			noblock = 1;
-			continue;
-		}
-		for (w = wwhead.ww_forw; w != &wwhead; w = w->ww_forw)
-			if (w->ww_pty >= 0 && w->ww_obq > w->ww_obp &&
-			    !w->ww_stopped) {
-				n = wwwrite(w, w->ww_obp,
-					w->ww_obq - w->ww_obp);
-				if ((w->ww_obp += n) == w->ww_obq)
-					w->ww_obq = w->ww_obp = w->ww_ob;
-				if (wwinterrupt())
-					break;
-			}
-	}
-}