2 * Copyright © 2012 Ran Benita <ran234@gmail.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
36 #include <sys/epoll.h>
37 #include <linux/input.h>
44 struct xkb_state *state;
45 struct xkb_compose_state *compose_state;
46 struct keyboard *next;
49 static bool terminate;
50 static int evdev_offset = 8;
51 static bool report_state_changes;
52 static bool with_compose;
53 static enum xkb_consumed_mode consumed_mode = XKB_CONSUMED_MODE_XKB;
55 #define NLONGS(n) (((n) + LONG_BIT - 1) / LONG_BIT)
58 evdev_bit_is_set(const unsigned long *array, int bit)
60 return array[bit / LONG_BIT] & (1LL << (bit % LONG_BIT));
63 /* Some heuristics to see if the device is a keyboard. */
68 unsigned long evbits[NLONGS(EV_CNT)] = { 0 };
69 unsigned long keybits[NLONGS(KEY_CNT)] = { 0 };
72 ioctl(fd, EVIOCGBIT(0, sizeof(evbits)), evbits);
76 if (!evdev_bit_is_set(evbits, EV_KEY))
80 ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
84 for (i = KEY_RESERVED; i <= KEY_MIN_INTERESTING; i++)
85 if (evdev_bit_is_set(keybits, i))
92 keyboard_new(struct dirent *ent, struct xkb_keymap *keymap,
93 struct xkb_compose_table *compose_table, struct keyboard **out)
98 struct xkb_state *state;
99 struct xkb_compose_state *compose_state = NULL;
100 struct keyboard *kbd;
102 ret = asprintf(&path, "/dev/input/%s", ent->d_name);
106 fd = open(path, O_NONBLOCK | O_CLOEXEC | O_RDONLY);
112 if (!is_keyboard(fd)) {
113 /* Dummy "skip this device" value. */
118 state = xkb_state_new(keymap);
120 fprintf(stderr, "Couldn't create xkb state for %s\n", path);
126 compose_state = xkb_compose_state_new(compose_table,
127 XKB_COMPOSE_STATE_NO_FLAGS);
128 if (!compose_state) {
129 fprintf(stderr, "Couldn't create compose state for %s\n", path);
135 kbd = calloc(1, sizeof(*kbd));
138 goto err_compose_state;
144 kbd->compose_state = compose_state;
149 xkb_compose_state_unref(compose_state);
151 xkb_state_unref(state);
160 keyboard_free(struct keyboard *kbd)
167 xkb_state_unref(kbd->state);
168 xkb_compose_state_unref(kbd->compose_state);
173 filter_device_name(const struct dirent *ent)
175 return !fnmatch("event*", ent->d_name, 0);
178 static struct keyboard *
179 get_keyboards(struct xkb_keymap *keymap,
180 struct xkb_compose_table *compose_table)
183 struct dirent **ents;
184 struct keyboard *kbds = NULL, *kbd = NULL;
186 nents = scandir("/dev/input", &ents, filter_device_name, alphasort);
188 fprintf(stderr, "Couldn't scan /dev/input: %s\n", strerror(errno));
192 for (i = 0; i < nents; i++) {
193 ret = keyboard_new(ents[i], keymap, compose_table, &kbd);
195 if (ret == -EACCES) {
196 fprintf(stderr, "Couldn't open /dev/input/%s: %s. "
197 "You probably need root to run this.\n",
198 ents[i]->d_name, strerror(-ret));
201 if (ret != -ENOTSUP) {
202 fprintf(stderr, "Couldn't open /dev/input/%s: %s. Skipping.\n",
203 ents[i]->d_name, strerror(-ret));
214 fprintf(stderr, "Couldn't find any keyboards I can use! Quitting.\n");
219 for (i = 0; i < nents; i++)
226 free_keyboards(struct keyboard *kbds)
228 struct keyboard *next;
237 /* The meaning of the input_event 'value' field. */
239 KEY_STATE_RELEASE = 0,
241 KEY_STATE_REPEAT = 2,
245 process_event(struct keyboard *kbd, uint16_t type, uint16_t code, int32_t value)
247 xkb_keycode_t keycode;
248 struct xkb_keymap *keymap;
249 enum xkb_state_component changed;
250 enum xkb_compose_status status;
255 keycode = evdev_offset + code;
256 keymap = xkb_state_get_keymap(kbd->state);
258 if (value == KEY_STATE_REPEAT && !xkb_keymap_key_repeats(keymap, keycode))
261 if (with_compose && value != KEY_STATE_RELEASE) {
262 xkb_keysym_t keysym = xkb_state_key_get_one_sym(kbd->state, keycode);
263 xkb_compose_state_feed(kbd->compose_state, keysym);
266 if (value != KEY_STATE_RELEASE)
267 test_print_keycode_state(kbd->state, kbd->compose_state, keycode,
271 status = xkb_compose_state_get_status(kbd->compose_state);
272 if (status == XKB_COMPOSE_CANCELLED || status == XKB_COMPOSE_COMPOSED)
273 xkb_compose_state_reset(kbd->compose_state);
276 if (value == KEY_STATE_RELEASE)
277 changed = xkb_state_update_key(kbd->state, keycode, XKB_KEY_UP);
279 changed = xkb_state_update_key(kbd->state, keycode, XKB_KEY_DOWN);
281 if (report_state_changes)
282 test_print_state_changes(changed);
286 read_keyboard(struct keyboard *kbd)
289 struct input_event evs[16];
291 /* No fancy error checking here. */
292 while ((len = read(kbd->fd, &evs, sizeof(evs))) > 0) {
293 const size_t nevs = len / sizeof(struct input_event);
294 for (size_t i = 0; i < nevs; i++)
295 process_event(kbd, evs[i].type, evs[i].code, evs[i].value);
298 if (len < 0 && errno != EWOULDBLOCK) {
299 fprintf(stderr, "Couldn't read %s: %s\n", kbd->path, strerror(errno));
307 loop(struct keyboard *kbds)
311 struct keyboard *kbd;
312 struct epoll_event ev;
313 struct epoll_event evs[16];
315 epfd = epoll_create1(0);
317 fprintf(stderr, "Couldn't create epoll instance: %s\n",
322 for (kbd = kbds; kbd; kbd = kbd->next) {
323 memset(&ev, 0, sizeof(ev));
326 ret = epoll_ctl(epfd, EPOLL_CTL_ADD, kbd->fd, &ev);
329 fprintf(stderr, "Couldn't add %s to epoll: %s\n",
330 kbd->path, strerror(errno));
336 ret = epoll_wait(epfd, evs, 16, -1);
341 fprintf(stderr, "Couldn't poll for events: %s\n",
346 for (i = 0; i < ret; i++) {
347 kbd = evs[i].data.ptr;
348 ret = read_keyboard(kbd);
364 sigintr_handler(int signum)
370 main(int argc, char *argv[])
374 struct keyboard *kbds;
375 struct xkb_context *ctx;
376 struct xkb_keymap *keymap;
377 struct xkb_compose_table *compose_table = NULL;
378 const char *rules = NULL;
379 const char *model = NULL;
380 const char *layout = NULL;
381 const char *variant = NULL;
382 const char *options = NULL;
383 const char *keymap_path = NULL;
385 struct sigaction act;
387 setlocale(LC_ALL, "");
389 while ((opt = getopt(argc, argv, "r:m:l:v:o:k:n:cdg")) != -1) {
407 keymap_path = optarg;
411 evdev_offset = strtol(optarg, NULL, 10);
413 fprintf(stderr, "error: -n option expects a number\n");
418 report_state_changes = true;
424 consumed_mode = XKB_CONSUMED_MODE_GTK;
427 fprintf(stderr, " Usage: %s [-r <rules>] [-m <model>] "
428 "[-l <layout>] [-v <variant>] [-o <options>]\n",
430 fprintf(stderr, " or: %s -k <path to keymap file>\n",
432 fprintf(stderr, "For both: -n <evdev keycode offset>\n"
433 " -c (to report changes to the state)\n"
434 " -d (to enable compose)\n"
435 " -g (to use GTK consumed mode)\n");
440 ctx = test_get_context(0);
443 fprintf(stderr, "Couldn't create xkb context\n");
448 FILE *file = fopen(keymap_path, "rb");
451 fprintf(stderr, "Couldn't open '%s': %s\n",
452 keymap_path, strerror(errno));
455 keymap = xkb_keymap_new_from_file(ctx, file,
456 XKB_KEYMAP_FORMAT_TEXT_V1,
457 XKB_KEYMAP_COMPILE_NO_FLAGS);
461 keymap = test_compile_rules(ctx, rules, model, layout, variant,
467 fprintf(stderr, "Couldn't create xkb keymap\n");
472 locale = setlocale(LC_CTYPE, NULL);
474 xkb_compose_table_new_from_locale(ctx, locale,
475 XKB_COMPOSE_COMPILE_NO_FLAGS);
476 if (!compose_table) {
478 fprintf(stderr, "Couldn't create compose from locale\n");
483 kbds = get_keyboards(keymap, compose_table);
489 act.sa_handler = sigintr_handler;
490 sigemptyset(&act.sa_mask);
492 sigaction(SIGINT, &act, NULL);
493 sigaction(SIGTERM, &act, NULL);
495 test_disable_stdin_echo();
497 test_enable_stdin_echo();
499 free_keyboards(kbds);
501 xkb_compose_table_unref(compose_table);
503 xkb_keymap_unref(keymap);
505 xkb_context_unref(ctx);
507 exit(ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE);