| /* 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; |
| } |