1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini reset implementation for busybox
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | * Written by Erik Andersen and Kent Robotti <robotti@metconnect.com>
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7 | *
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8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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9 | */
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10 |
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11 | /* BTW, which "standard" package has this utility? It doesn't seem
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12 | * to be ncurses, coreutils, console-tools... then what? */
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13 |
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14 | #include "libbb.h"
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15 |
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16 | #define ESC "\033"
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17 |
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18 | #if ENABLE_STTY
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19 | int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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20 | #endif
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21 |
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22 | int reset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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23 | int reset_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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24 | {
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25 | static const char *const args[] = {
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26 | "stty", "sane", NULL
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27 | };
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28 |
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29 | /* no options, no getopt */
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30 |
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31 | if (/*isatty(STDIN_FILENO) &&*/ isatty(STDOUT_FILENO)) {
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32 | /* See 'man 4 console_codes' for details:
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33 | * "ESC c" -- Reset
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34 | * "ESC ( K" -- Select user mapping
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35 | * "ESC [ 0 m" -- Reset all display attributes
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36 | * "ESC [ J" -- Erase to the end of screen
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37 | * "ESC [ ? 25 h" -- Make cursor visible
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38 | */
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39 | printf(ESC"c" ESC"(K" ESC"[0m" ESC"[J" ESC"[?25h");
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40 | /* http://bugs.busybox.net/view.php?id=1414:
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41 | * people want it to reset echo etc: */
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42 | #if ENABLE_STTY
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43 | return stty_main(2, (char**)args);
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44 | #else
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45 | execvp("stty", (char**)args);
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46 | #endif
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47 | }
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48 | return EXIT_SUCCESS;
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49 | }
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