source: branches/3.2/mindi-busybox/console-tools/kbd_mode.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
  • Property svn:eol-style set to native
File size: 1.8 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini kbd_mode implementation for busybox
4 *
5 * Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com>
6 *   written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
7 *   console-utils v0.2.3, licensed under GNU GPLv2
8 *
9 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 */
11
12//usage:#define kbd_mode_trivial_usage
13//usage:       "[-a|k|s|u] [-C TTY]"
14//usage:#define kbd_mode_full_usage "\n\n"
15//usage:       "Report or set the keyboard mode\n"
16//usage:     "\n    -a  Default (ASCII)"
17//usage:     "\n    -k  Medium-raw (keyboard)"
18//usage:     "\n    -s  Raw (scancode)"
19//usage:     "\n    -u  Unicode (utf-8)"
20//usage:     "\n    -C TTY  Affect TTY instead of /dev/tty"
21
22#include "libbb.h"
23#include <linux/kd.h>
24
25int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
26int kbd_mode_main(int argc UNUSED_PARAM, char **argv)
27{
28    enum {
29        SCANCODE  = (1 << 0),
30        ASCII     = (1 << 1),
31        MEDIUMRAW = (1 << 2),
32        UNICODE   = (1 << 3),
33    };
34    int fd;
35    unsigned opt;
36    const char *tty_name = CURRENT_TTY;
37
38    opt = getopt32(argv, "sakuC:", &tty_name);
39    fd = xopen_nonblocking(tty_name);
40    opt &= 0xf; /* clear -C bit, see (*) */
41
42    if (!opt) { /* print current setting */
43        const char *mode = "unknown";
44        int m;
45
46        xioctl(fd, KDGKBMODE, &m);
47        if (m == K_RAW)
48            mode = "raw (scancode)";
49        else if (m == K_XLATE)
50            mode = "default (ASCII)";
51        else if (m == K_MEDIUMRAW)
52            mode = "mediumraw (keycode)";
53        else if (m == K_UNICODE)
54            mode = "Unicode (UTF-8)";
55        printf("The keyboard is in %s mode\n", mode);
56    } else {
57        /* here we depend on specific bits assigned to options (*) */
58        opt = opt & UNICODE ? 3 : opt >> 1;
59        /* double cast prevents warnings about widening conversion */
60        xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt);
61    }
62
63    if (ENABLE_FEATURE_CLEAN_UP)
64        close(fd);
65    return EXIT_SUCCESS;
66}
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