blob: 57cebb4ea9ce59105a7aab38aad203ea01cee2b5
| 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Mini reset implementation for busybox |
| 4 | * |
| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
| 6 | * Written by Erik Andersen and Kent Robotti <robotti@metconnect.com> |
| 7 | * |
| 8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| 9 | */ |
| 10 | /* "Standard" version of this tool is in ncurses package */ |
| 11 | |
| 12 | //config:config RESET |
| 13 | //config: bool "reset" |
| 14 | //config: default y |
| 15 | //config: help |
| 16 | //config: This program is used to reset the terminal screen, if it |
| 17 | //config: gets messed up. |
| 18 | |
| 19 | //applet:IF_RESET(APPLET(reset, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| 20 | |
| 21 | //kbuild:lib-$(CONFIG_RESET) += reset.o |
| 22 | |
| 23 | //usage:#define reset_trivial_usage |
| 24 | //usage: "" |
| 25 | //usage:#define reset_full_usage "\n\n" |
| 26 | //usage: "Reset the screen" |
| 27 | |
| 28 | #include "libbb.h" |
| 29 | |
| 30 | #define ESC "\033" |
| 31 | |
| 32 | #if ENABLE_STTY |
| 33 | int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 34 | #endif |
| 35 | |
| 36 | int reset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 37 | int reset_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) |
| 38 | { |
| 39 | static const char *const args[] = { |
| 40 | "stty", "sane", NULL |
| 41 | }; |
| 42 | |
| 43 | /* no options, no getopt */ |
| 44 | |
| 45 | if (/*isatty(STDIN_FILENO) &&*/ isatty(STDOUT_FILENO)) { |
| 46 | /* See 'man 4 console_codes' for details: |
| 47 | * "ESC c" -- Reset |
| 48 | * "ESC ( B" -- Select G0 Character Set (B = US) |
| 49 | * "ESC [ 0 m" -- Reset all display attributes |
| 50 | * "ESC [ J" -- Erase to the end of screen |
| 51 | * "ESC [ ? 25 h" -- Make cursor visible |
| 52 | */ |
| 53 | printf(ESC"c" ESC"(B" ESC"[0m" ESC"[J" ESC"[?25h"); |
| 54 | /* http://bugs.busybox.net/view.php?id=1414: |
| 55 | * people want it to reset echo etc: */ |
| 56 | #if ENABLE_STTY |
| 57 | return stty_main(2, (char**)args); |
| 58 | #else |
| 59 | execvp("stty", (char**)args); |
| 60 | #endif |
| 61 | } |
| 62 | return EXIT_SUCCESS; |
| 63 | } |
| 64 |