1
/* keystatus.c - Command to check key modifier status. */
3
* GRUB -- GRand Unified Bootloader
4
* Copyright (C) 2009 Free Software Foundation, Inc.
6
* GRUB is free software: you can redistribute it and/or modify
7
* it under the terms of the GNU General Public License as published by
8
* the Free Software Foundation, either version 3 of the License, or
9
* (at your option) any later version.
11
* GRUB is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14
* GNU General Public License for more details.
16
* You should have received a copy of the GNU General Public License
17
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
21
#include <grub/misc.h>
22
#include <grub/extcmd.h>
23
#include <grub/term.h>
24
#include <grub/i18n.h>
26
static const struct grub_arg_option options[] =
28
{"shift", 's', 0, N_("Check Shift key."), 0, 0},
29
{"ctrl", 'c', 0, N_("Check Control key."), 0, 0},
30
{"alt", 'a', 0, N_("Check Alt key."), 0, 0},
34
#define grub_cur_term_input grub_term_get_current_input ()
37
grub_cmd_keystatus (grub_extcmd_t cmd,
38
int argc __attribute__ ((unused)),
39
char **args __attribute__ ((unused)))
41
struct grub_arg_list *state = cmd->state;
46
expect_mods |= GRUB_TERM_STATUS_SHIFT;
48
expect_mods |= GRUB_TERM_STATUS_CTRL;
50
expect_mods |= GRUB_TERM_STATUS_ALT;
52
grub_dprintf ("keystatus", "expect_mods: %d\n", expect_mods);
54
/* Without arguments, just check whether getkeystatus is supported at
58
grub_term_input_t term;
61
FOR_ACTIVE_TERM_INPUTS (term)
62
if (!term->getkeystatus)
63
return grub_error (GRUB_ERR_TEST_FAILURE, "false");
67
return grub_error (GRUB_ERR_TEST_FAILURE, "false");
71
mods = grub_getkeystatus ();
72
grub_dprintf ("keystatus", "mods: %d\n", mods);
73
if (mods >= 0 && (mods & expect_mods) != 0)
76
return grub_error (GRUB_ERR_TEST_FAILURE, "false");
79
static grub_extcmd_t cmd;
81
GRUB_MOD_INIT(keystatus)
83
cmd = grub_register_extcmd ("keystatus", grub_cmd_keystatus,
84
GRUB_COMMAND_FLAG_BOTH,
85
N_("[--shift] [--ctrl] [--alt]"),
86
N_("Check key modifier status."),
90
GRUB_MOD_FINI(keystatus)
92
grub_unregister_extcmd (cmd);