[5877] in Athena Bugs
top and screen heights (comp.sources.bugs)
daemon@ATHENA.MIT.EDU (Jonathan I. Kamens)
Tue Aug 28 10:54:02 1990
Date: Tue, 28 Aug 90 10:53:48 -0400
From: Jonathan I. Kamens <jik@PIT-MANAGER.MIT.EDU>
To: bugs@ATHENA.MIT.EDU
In article <1990Aug25.042839.15222@umigw.miami.edu>, jim@mango.miami.edu (jim brown) writes:
|> The following patch to top v2.1 was found to be necessary for both
|> RISC Ultrix 3.1 and 4.0. Top was treating a normal ASCII tube
|> (say a vt200 or vt100) as 'dumb' because ws.ws_row was coming back 0.
|>
|> If the ioctl works and ws.ws_row is 0 then use "li" and "co" to size
|> the 'dumb'er (but not stupid) terminal.
|>
|> *** screen.c.orig Mon Sep 5 22:35:05 1988
|> --- screen.c Sat Aug 25 00:19:39 1990
|> ***************
|> *** 8,13 ****
|> --- 8,14 ----
|>
|> #include <stdio.h>
|> #include <sgtty.h>
|> + #include <errno.h>
|> #include "screen.h"
|> #include "boolean.h"
|>
|> ***************
|> *** 89,102 ****
|> #if defined(TIOCGWINSZ)
|> {
|> struct winsize ws;
|>
|> ! ioctl(0, TIOCGWINSZ, &ws);
|> ! if (!(screen_length = ws.ws_row)) { /* yes I mean "=" */
|> screen_length = smart_terminal = 0;
|> return;
|> ! }
|> ! if (!(screen_width = ws.ws_col - 1)) { /* uh huh */
|> screen_width = 79;
|> }
|> }
|> #else
|> --- 90,132 ----
|> #if defined(TIOCGWINSZ)
|> {
|> struct winsize ws;
|> + int stat;
|>
|> ! stat = ioctl(0, TIOCGWINSZ, &ws);
|> ! if (stat != -1 && ws.ws_row == 0) {
|> ! stat = -1; errno = ENOTTY; /* values no good */
|> ! }
|> ! if (stat != -1) {
|> ! if (!(screen_length = ws.ws_row)) { /* yes I mean "=" */
|> ! screen_length = smart_terminal = 0;
|> ! return;
|> ! }
|> ! if (!(screen_width = ws.ws_col - 1)) { /* uh huh */
|> ! screen_width = 79;
|> ! }
|> ! }
|> ! else if (errno == ENOTTY) {
|> ! /* set up common terminal capabilities */
|> ! if ((screen_length = tgetnum("li")) <= 0)
|> ! {
|> screen_length = smart_terminal = 0;
|> return;
|> ! }
|> !
|> ! /* screen_width is a little different */
|> ! if ((screen_width = tgetnum("co")) == -1)
|> ! {
|> screen_width = 79;
|> + }
|> + else
|> + {
|> + screen_width -= 1;
|> + }
|> + }
|> + else {
|> + fprintf("Can't ioctl TTY: %d\n", errno);
|> + screen_length = smart_terminal = 0;
|> + return;
|> }
|> }
|> #else
|>
|> =========== end of patch for screen.c ============
|> --
|> Jim Brown, University of Miami, RSMAS/MPO
|> [send mail to jim@umigw.miami.edu]
Jonathan Kamens USnail:
MIT Project Athena 11 Ashford Terrace
jik@Athena.MIT.EDU Allston, MA 02134
Office: 617-253-8495 Home: 617-782-0710
