68404f13d4
function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* resize - set terminal width and height.
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*
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* Copyright 2006 Bernhard Fischer
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* no options, no getopt */
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#include "libbb.h"
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#define ESC "\033"
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#define old_termios (*(struct termios*)&bb_common_bufsiz1)
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static void
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onintr(int sig ATTRIBUTE_UNUSED)
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{
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tcsetattr(STDERR_FILENO, TCSANOW, &old_termios);
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exit(1);
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}
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int resize_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int resize_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
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{
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struct termios new;
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struct winsize w = { 0, 0, 0, 0 };
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int ret;
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/* We use _stderr_ in order to make resize usable
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* in shell backticks (those redirect stdout away from tty).
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* NB: other versions of resize open "/dev/tty"
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* and operate on it - should we do the same?
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*/
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tcgetattr(STDERR_FILENO, &old_termios); /* fiddle echo */
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new = old_termios;
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new.c_cflag |= (CLOCAL | CREAD);
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new.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
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bb_signals(0
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+ (1 << SIGINT)
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+ (1 << SIGQUIT)
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+ (1 << SIGTERM)
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+ (1 << SIGALRM)
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, onintr);
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tcsetattr(STDERR_FILENO, TCSANOW, &new);
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/* save_cursor_pos 7
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* scroll_whole_screen [r
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* put_cursor_waaaay_off [$x;$yH
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* get_cursor_pos [6n
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* restore_cursor_pos 8
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*/
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fprintf(stderr, ESC"7" ESC"[r" ESC"[999;999H" ESC"[6n");
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alarm(3); /* Just in case terminal won't answer */
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scanf(ESC"[%hu;%huR", &w.ws_row, &w.ws_col);
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fprintf(stderr, ESC"8");
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/* BTW, other versions of resize recalculate w.ws_xpixel, ws.ws_ypixel
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* by calculating character cell HxW from old values
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* (gotten via TIOCGWINSZ) and recomputing *pixel values */
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ret = ioctl(STDERR_FILENO, TIOCSWINSZ, &w);
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tcsetattr(STDERR_FILENO, TCSANOW, &old_termios);
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if (ENABLE_FEATURE_RESIZE_PRINT)
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printf("COLUMNS=%d;LINES=%d;export COLUMNS LINES;\n",
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w.ws_col, w.ws_row);
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return ret;
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}
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