grub/commands/keylayouts.c

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/term.h>
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/time.h>
#include <grub/dl.h>
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#include <grub/keyboard_layouts.h>
#include <grub/command.h>
#include <grub/i18n.h>
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#include <grub/file.h>
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static struct grub_keyboard_layout layout_us = {
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.keyboard_map = {
/* 0x00 */ '\0', GRUB_TERM_ESC, '1', '2', '3', '4', '5', '6',
/* 0x08 */ '7', '8', '9', '0', '-', '=', GRUB_TERM_BACKSPACE, GRUB_TERM_TAB,
/* 0x10 */ 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
/* 0x18 */ 'o', 'p', '[', ']', '\n', '\0', 'a', 's',
/* 0x20 */ 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
/* 0x28 */ '\'', '`', '\0', '\\', 'z', 'x', 'c', 'v',
/* 0x30 */ 'b', 'n', 'm', ',', '.', '/', '\0', '*',
/* 0x38 */ '\0', ' ', '\0', GRUB_TERM_KEY_F1,
/* 0x3c */ GRUB_TERM_KEY_F2, GRUB_TERM_KEY_F3,
/* 0x3e */ GRUB_TERM_KEY_F4, GRUB_TERM_KEY_F5,
/* 0x40 */ GRUB_TERM_KEY_F6, GRUB_TERM_KEY_F7,
/* 0x42 */ GRUB_TERM_KEY_F8, GRUB_TERM_KEY_F9,
/* 0x44 */ GRUB_TERM_KEY_F10, '\0', '\0', GRUB_TERM_KEY_HOME,
/* 0x48 */ GRUB_TERM_KEY_UP, GRUB_TERM_KEY_NPAGE, '-', GRUB_TERM_KEY_LEFT,
/* 0x4c */ GRUB_TERM_KEY_CENTER, GRUB_TERM_KEY_RIGHT,
/* 0x4e */ '+', GRUB_TERM_KEY_END,
/* 0x50 */ GRUB_TERM_KEY_DOWN, GRUB_TERM_KEY_PPAGE,
/* 0x52 */ GRUB_TERM_KEY_INSERT, GRUB_TERM_KEY_DC,
/* 0x54 */ '\0', '\0', '\\', GRUB_TERM_KEY_F11,
/* 0x58 */ GRUB_TERM_KEY_F12, '\0', '\0', '\0', '\0', '\0', '\0', '\0',
/* 0x60 */ '\0', '\0', '\0', '\0',
/* 0x64 */ '\0', GRUB_TERM_KEY_UP, GRUB_TERM_KEY_DOWN, GRUB_TERM_KEY_LEFT,
/* 0x68 */ GRUB_TERM_KEY_RIGHT
},
.keyboard_map_shift = {
'\0', '\0', '!', '@', '#', '$', '%', '^',
'&', '*', '(', ')', '_', '+', '\0', '\0',
'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
'O', 'P', '{', '}', '\n', '\0', 'A', 'S',
'D', 'F', 'G', 'H', 'J', 'K', 'L', ':',
'\"', '~', '\0', '|', 'Z', 'X', 'C', 'V',
'B', 'N', 'M', '<', '>', '?',
[0x56] = '|'
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}
};
static struct grub_keyboard_layout *grub_current_layout = &layout_us;
static int
map_key_core (int code, int status, int *alt_gr_consumed)
{
*alt_gr_consumed = 0;
if (status & GRUB_TERM_STATUS_RALT)
{
if (status & (GRUB_TERM_STATUS_LSHIFT | GRUB_TERM_STATUS_RSHIFT))
{
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if (grub_current_layout->keyboard_map_shift_l3[code])
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{
*alt_gr_consumed = 1;
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return grub_current_layout->keyboard_map_shift_l3[code];
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}
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else if (grub_current_layout->keyboard_map_shift[code])
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{
*alt_gr_consumed = 1;
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return grub_current_layout->keyboard_map_l3[code]
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| GRUB_TERM_SHIFT;
}
}
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else if (grub_current_layout->keyboard_map_shift[code])
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{
*alt_gr_consumed = 1;
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return grub_current_layout->keyboard_map_l3[code];
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}
}
if (status & (GRUB_TERM_STATUS_LSHIFT | GRUB_TERM_STATUS_RSHIFT))
{
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if (grub_current_layout->keyboard_map_shift[code])
return grub_current_layout->keyboard_map_shift[code];
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else
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return grub_current_layout->keyboard_map[code] | GRUB_TERM_SHIFT;
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}
else
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return grub_current_layout->keyboard_map[code];
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}
unsigned
grub_term_map_key (int code, int status)
{
int alt_gr_consumed;
int key;
key = map_key_core (code, status, &alt_gr_consumed);
if (key == 0 || key == GRUB_TERM_SHIFT)
grub_dprintf ("atkeyb", "Unknown key 0x%x detected\n", code);
if (status & GRUB_TERM_STATUS_CAPS)
{
if ((key >= 'a') && (key <= 'z'))
key += 'A' - 'a';
else if ((key >= 'A') && (key <= 'Z'))
key += 'a' - 'A';
}
if ((status & GRUB_TERM_STATUS_LALT) ||
((status & GRUB_TERM_STATUS_RALT) && !alt_gr_consumed))
key |= GRUB_TERM_ALT;
if (status & (GRUB_TERM_STATUS_LCTRL | GRUB_TERM_STATUS_RCTRL))
key |= GRUB_TERM_CTRL;
return key;
}
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static grub_err_t
grub_cmd_keymap (struct grub_command *cmd __attribute__ ((unused)),
int argc, char *argv[])
{
char *filename;
grub_file_t file;
grub_uint32_t version;
grub_uint8_t magic[GRUB_KEYBOARD_LAYOUTS_FILEMAGIC_SIZE];
struct grub_keyboard_layout *newmap = NULL;
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unsigned i;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "file or layout name required");
if (argv[0][0] != '(' && argv[0][0] != '/' && argv[0][0] != '+')
{
const char *prefix = grub_env_get ("prefix");
if (!prefix)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "No prefix set");
filename = grub_xasprintf ("%s/layouts/%s.gkb", prefix, argv[0]);
if (!filename)
return grub_errno;
}
else
filename = argv[0];
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file = grub_file_open (filename);
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if (! file)
goto fail;
if (grub_file_read (file, magic, sizeof (magic)) != sizeof (magic))
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_ARGUMENT, "file is too short");
goto fail;
}
if (grub_memcmp (magic, GRUB_KEYBOARD_LAYOUTS_FILEMAGIC,
GRUB_KEYBOARD_LAYOUTS_FILEMAGIC_SIZE) != 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid magic");
goto fail;
}
if (grub_file_read (file, &version, sizeof (version)) != sizeof (version))
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_ARGUMENT, "file is too short");
goto fail;
}
if (grub_le_to_cpu32 (version) != GRUB_KEYBOARD_LAYOUTS_VERSION)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid version");
goto fail;
}
newmap = grub_malloc (sizeof (*newmap));
if (!newmap)
goto fail;
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if (grub_file_read (file, newmap, sizeof (*newmap)) != sizeof (*newmap))
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{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_ARGUMENT, "file is too short");
goto fail;
}
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for (i = 0; i < ARRAY_SIZE (newmap->keyboard_map); i++)
newmap->keyboard_map[i] = grub_le_to_cpu32(newmap->keyboard_map[i]);
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for (i = 0; i < ARRAY_SIZE (newmap->keyboard_map_shift); i++)
newmap->keyboard_map_shift[i]
= grub_le_to_cpu32(newmap->keyboard_map_shift[i]);
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for (i = 0; i < ARRAY_SIZE (newmap->keyboard_map_l3); i++)
newmap->keyboard_map_l3[i]
= grub_le_to_cpu32(newmap->keyboard_map_l3[i]);
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for (i = 0; i < ARRAY_SIZE (newmap->keyboard_map_shift_l3); i++)
newmap->keyboard_map_shift_l3[i]
= grub_le_to_cpu32(newmap->keyboard_map_shift_l3[i]);
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grub_current_layout = newmap;
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return GRUB_ERR_NONE;
fail:
if (filename != argv[0])
grub_free (filename);
grub_free (newmap);
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if (file)
grub_file_close (file);
return grub_errno;
}
static grub_command_t cmd;
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GRUB_MOD_INIT(keylayouts)
{
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cmd = grub_register_command ("keymap", grub_cmd_keymap,
0, N_("Load a keyboard layout."));
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}
GRUB_MOD_FINI(keylayouts)
{
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grub_unregister_command (cmd);
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}