busybox/miscutils/ttysize.c
Denys Vlasenko 0ef64bdb40 *: make GNU licensing statement forms more regular
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 20:14:46 +02:00

45 lines
982 B
C

/* vi: set sw=4 ts=4: */
/*
* Replacement for "stty size", which is awkward for shell script use.
* - Allows to request width, height, or both, in any order.
* - Does not complain on error, but returns width 80, height 24.
* - Size: less than 200 bytes
*
* Copyright (C) 2007 by Denys Vlasenko <vda.linux@googlemail.com>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
int ttysize_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ttysize_main(int argc UNUSED_PARAM, char **argv)
{
unsigned w, h;
struct winsize wsz;
w = 80;
h = 24;
if (!ioctl(0, TIOCGWINSZ, &wsz)) {
w = wsz.ws_col;
h = wsz.ws_row;
}
if (!argv[1]) {
printf("%u %u", w, h);
} else {
const char *fmt, *arg;
fmt = "%u %u" + 3; /* "%u" */
while ((arg = *++argv) != NULL) {
char c = arg[0];
if (c == 'w')
printf(fmt, w);
if (c == 'h')
printf(fmt, h);
fmt = "%u %u" + 2; /* " %u" */
}
}
bb_putchar('\n');
return 0;
}