1 /* vi: set sw=4 ts=4: */
3 * Replacement for "stty size", which is awkward for shell script use.
4 * - Allows to request width, height, or both, in any order.
5 * - Does not complain on error, but returns width 80, height 24.
6 * - Size: less than 200 bytes
8 * Copyright (C) 2007 by Denys Vlasenko <vda.linux@googlemail.com>
10 * Licensed under GPLv2, see file LICENSE in this source tree.
12 //config:config TTYSIZE
13 //config: bool "ttysize (372 bytes)"
16 //config: A replacement for "stty size". Unlike stty, can report only width,
17 //config: only height, or both, in any order. It also does not complain on
18 //config: error, but returns default 80x24.
19 //config: Usage in shell scripts: width=`ttysize w`.
21 //applet:IF_TTYSIZE(APPLET(ttysize, BB_DIR_USR_BIN, BB_SUID_DROP))
23 //kbuild:lib-$(CONFIG_TTYSIZE) += ttysize.o
25 //usage:#define ttysize_trivial_usage
27 //usage:#define ttysize_full_usage "\n\n"
28 //usage: "Print dimensions of stdin tty, or 80x24"
32 int ttysize_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
33 int ttysize_main(int argc UNUSED_PARAM, char **argv)
40 if (ioctl(0, TIOCGWINSZ, &wsz) == 0
41 || ioctl(1, TIOCGWINSZ, &wsz) == 0
42 || ioctl(2, TIOCGWINSZ, &wsz) == 0
49 printf("%u %u", w, h);
51 const char *fmt, *arg;
53 fmt = "%u %u" + 3; /* "%u" */
54 while ((arg = *++argv) != NULL) {
60 fmt = "%u %u" + 2; /* " %u" */