/* 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. */ //usage:#define ttysize_trivial_usage //usage: "[w] [h]" //usage:#define ttysize_full_usage "\n\n" //usage: "Print dimension(s) of stdin's terminal, on error return 80x25" #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; }