busybox/libbb/get_terminal_width_height.c
Bernhard Reutner-Fischer b1629b1b2a - remove emacs layout block as suggested by Robert P.J. Day
- use shorter boilerplate while at it
2006-05-19 19:29:19 +00:00

32 lines
837 B
C

/* vi: set sw=4 ts=4: */
/*
* Determine the width and height of the terminal.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <unistd.h>
#include <termios.h>
#include <sys/ioctl.h>
#include "libbb.h"
/* It is perfectly ok to pass in a NULL for either width or for
* height, in which case that value will not be set. */
int get_terminal_width_height(int fd, int *width, int *height)
{
struct winsize win = { 0, 0, 0, 0 };
int ret = ioctl(fd, TIOCGWINSZ, &win);
if (win.ws_row <= 1) win.ws_row = 24;
if (win.ws_col <= 1) win.ws_col = 80;
if (height) *height = (int) win.ws_row;
if (width) *width = (int) win.ws_col;
return ret;
}