1 /* vi: set sw=4 ts=4: */
3 * Determine the width and height of the terminal.
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <sys/ioctl.h>
31 /* It is perfectly ok to pass in a NULL for either width or for
32 * height, in which case that value will not be set. */
33 int get_terminal_width_height(int fd, int *width, int *height)
35 struct winsize win = { 0, 0, 0, 0 };
36 int ret = ioctl(fd, TIOCGWINSZ, &win);
37 if (win.ws_row <= 1) win.ws_row = 24;
38 if (win.ws_col <= 1) win.ws_col = 80;
39 if (height) *height = (int) win.ws_row;
40 if (width) *width = (int) win.ws_col;