/*
* QEMU keymap utility
*
* Copyright Red Hat, Inc. 2017
*
* Authors:
* Gerd Hoffmann <kraxel@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/notify.h"
#include "ui/input.h"
#include <xkbcommon/xkbcommon.h>
struct xkb_rule_names names = {
.rules = NULL,
.model = "pc105",
.layout = "us",
.variant = NULL,
.options = NULL,
};
static xkb_mod_mask_t shift;
static xkb_mod_mask_t ctrl;
static xkb_mod_mask_t altgr;
static xkb_mod_mask_t numlock;
static FILE *outfile;
/* ------------------------------------------------------------------------ */
static uint32_t qcode_to_number(uint32_t qcode)
{
KeyValue keyvalue;
uint32_t number;
keyvalue.type = KEY_VALUE_KIND_QCODE;
keyvalue.u.qcode.data = qcode;
number = qemu_input_key_value_to_number(&keyvalue);
assert(number != 0);
return number;
}
static void print_sym(xkb_keysym_t sym, uint32_t qcode, const char *mod)
{
char name[64];
if (sym == XKB_KEY_NoSymbol) {
return;
}
xkb_keysym_get_name(sym, name, sizeof(name));
/* TODO: make ui/keymap.c parser accept QKeyCode names */
fprintf(outfile, "%s 0x%02x%s\n", name, qcode_to_number(qcode), mod);
}
static void walk_map(struct xkb_keymap *map, xkb_keycode_t code, void *data)
{
struct xkb_state *state = data;
xkb_keysym_t kbase, knumlock, kshift, kaltgr, kaltgrshift;
uint32_t evdev, qcode;
char name[64];
fprintf(outfile, "\n");
/*
* map xkb keycode -> QKeyCode
*
* xkb keycode is linux evdev shifted by 8
*/
evdev = code - 8;
qcode = qemu_input_linux_to_qcode(evdev);
if (qcode == Q_KEY_CODE_UNMAPPED) {
xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0);
kbase = xkb_state_key_get_one_sym(state, code);
xkb_keysym_get_name(kbase, name, sizeof(name));
fprintf(outfile, "# evdev %d (0x%x): no evdev -> QKeyCode mapping"
" (xkb keysym %s)\n", evdev, evdev, name);
return;
}
fprintf(outfile, "# evdev %d (0x%x), QKeyCode \"%s\", number 0x%x\n",
evdev, evdev,
QKeyCode_str(qcode),
qcode_to_number(qcode));
/*
* check which modifier states generate which keysyms
*/
xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0);
kbase = xkb_state_key_get_one_sym(state, code);
print_sym(kbase, qcode, "");
xkb_state_update_mask(state, 0, 0, numlock, 0, 0, 0);
knumlock = xkb_state_key_get_one_sym(state, code);
if (kbase != knumlock) {
print_sym(knumlock, qcode, " numlock");
}
xkb_state_update_mask(state, shift, 0, 0, 0, 0, 0);
kshift = xkb_state_key_get_one_sym(state, code);
if (kbase != kshift && knumlock != kshift) {
print_sym(kshift, qcode, " shift");
}
xkb_state_update_mask(state, altgr, 0, 0, 0, 0, 0);
kaltgr = xkb_state_key_get_one_sym(state, code);
if (kbase != kaltgr) {
print_sym(kaltgr, qcode, " altgr");
}
xkb_state_update_mask(state, altgr | shift, 0, 0, 0, 0, 0);
kaltgrshift = xkb_state_key_get_one_sym(state, code);
if (kshift != kaltgrshift && kaltgr != kaltgrshift) {
print_sym(kaltgrshift, qcode, " shift altgr");
}
return;
}
static void usage(FILE *out)
{
fprintf(out,
"\n"
"This tool generates qemu reverse keymaps from xkb keymaps,\n"
"which can be used with the qemu \"-k\" command line switch.\n"
"\n"
"usage: qemu-keymap <options>\n"
"options:\n"
" -h print this text\n"
" -f <file> set output file (default: stdout)\n"
" -m <model> set kbd model (default: %s)\n"
" -l <layout> set kbd layout (default: %s)\n"
" -v <variant> set kbd variant (default: %s)\n"
" -o <options> set kbd options (default: %s)\n"
"\n",
names.model, names.layout,
names.variant ?: "-",
names.options ?: "-");
}
int main(int argc, char *argv[])
{
struct xkb_context *ctx;
struct xkb_keymap *map;
struct xkb_state *state;
xkb_mod_index_t mod, mods;
int rc;
for (;;) {
rc = getopt(argc, argv, "hm:l:v:o:f:");
if (rc == -1) {
break;
}
switch (rc) {
case 'm':
names.model = optarg;
break;
case 'l':
names.layout = optarg;
break;
case 'v':
names.variant = optarg;
break;
case 'o':
names.options = optarg;
break;
case 'f':
outfile = fopen(optarg, "w");
if (outfile == NULL) {
fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
exit(1);
}
break;
case 'h':
usage(stdout);
exit(0);
default:
usage(stderr);
exit(1);
}
}
if (outfile == NULL) {
outfile = stdout;
}
fprintf(outfile,
"# SPDX-License-Identifier: GPL-2.0-or-later\n"
"#\n"
"# generated by qemu-keymap\n"
"# model : %s\n"
"# layout : %s\n"
"# variant : %s\n"
"# options : %s\n"
"\n",
names.model, names.layout,
names.variant ?: "-",
names.options ?: "-");
ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
map = xkb_keymap_new_from_names(ctx, &names, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!map) {
/* libxkbcommon prints error */
exit(1);
}
fprintf(outfile, "# name: \"%s\"\n\n",
xkb_keymap_layout_get_name(map, 0));
fprintf(outfile, "# modifiers\n");
mods = xkb_keymap_num_mods(map);
for (mod = 0; mod < mods; mod++) {
fprintf(outfile, "# %2d: %s\n",
mod, xkb_keymap_mod_get_name(map, mod));
}
mod = xkb_keymap_mod_get_index(map, "Shift");
shift = (1 << mod);
mod = xkb_keymap_mod_get_index(map, "Control");
ctrl = (1 << mod);
mod = xkb_keymap_mod_get_index(map, "AltGr");
altgr = (1 << mod);
mod = xkb_keymap_mod_get_index(map, "NumLock");
numlock = (1 << mod);
state = xkb_state_new(map);
xkb_keymap_key_for_each(map, walk_map, state);
/* add quirks */
fprintf(outfile,
"\n"
"#\n"
"# quirks section start\n"
"#\n"
"# Sometimes multiple keysyms map to the same keycodes.\n"
"# The keycode -> keysym lookup finds only one of the\n"
"# keysyms. So append them here.\n"
"#\n"
"\n");
print_sym(XKB_KEY_Print, Q_KEY_CODE_SYSRQ, "");
print_sym(XKB_KEY_Sys_Req, Q_KEY_CODE_SYSRQ, "");
print_sym(XKB_KEY_Execute, Q_KEY_CODE_SYSRQ, "");
print_sym(XKB_KEY_KP_Decimal, Q_KEY_CODE_KP_DECIMAL, " numlock");
print_sym(XKB_KEY_KP_Separator, Q_KEY_CODE_KP_DECIMAL, " numlock");
print_sym(XKB_KEY_Alt_R, Q_KEY_CODE_ALT_R, "");
print_sym(XKB_KEY_ISO_Level3_Shift, Q_KEY_CODE_ALT_R, "");
print_sym(XKB_KEY_Mode_switch, Q_KEY_CODE_ALT_R, "");
fprintf(outfile,
"\n"
"# quirks section end\n");
exit(0);
}
