1 /************************************************************
2 * Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
4 * Permission to use, copy, modify, and distribute this
5 * software and its documentation for any purpose and without
6 * fee is hereby granted, provided that the above copyright
7 * notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting
9 * documentation, and that the name of Silicon Graphics not be
10 * used in advertising or publicity pertaining to distribution
11 * of the software without specific prior written permission.
12 * Silicon Graphics makes no representation about the suitability
13 * of this software for any purpose. It is provided "as is"
14 * without any express or implied warranty.
16 * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
17 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
19 * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
20 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
22 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
23 * THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 ********************************************************/
27 #include "xkbcomp-priv.h"
33 * The xkb_keycodes section
34 * ========================
36 * This is the simplest section type, and is the first one to be
37 * compiled. The purpose of this is mostly to map between the
38 * hardware/evdev scancodes and xkb keycodes. Each key is given a name
39 * by which it can be referred to later, e.g. in the symbols section.
43 * Statements of the form:
47 * The above would let 49 and 10 be valid keycodes in the keymap, and
48 * assign them the names TLDE and AE01 respectively. The format <WXYZ> is
49 * always used to refer to a key by name.
51 * [ The naming convention <AE01> just denoted the position of the key
52 * in the main alphanumric section of the keyboard, with the two letters
53 * specifying the row and the two digits specifying the column, from
56 * In the common case this just maps to the evdev scancodes from
57 * /usr/include/linux/input.h, e.g. the following definitions:
58 * #define KEY_GRAVE 41
60 * Similar definitions appear in the xf86-input-keyboard driver. Note
61 * that in all current keymaps there's a constant offset of 8 (for
62 * historical reasons).
64 * If there's a conflict, like the same name given to different keycodes,
65 * or same keycode given different names, it is resolved according to the
66 * merge mode which applies to the definitions.
70 * Statements of the form:
71 * alias <MENU> = <COMP>;
73 * Allows to refer to a previously defined key (here <COMP>) by another
74 * name (here <MENU>). Conflicts are handled similarly.
77 * -------------------------
78 * Statements of the form:
79 * indicator 1 = "Caps Lock";
80 * indicator 2 = "Num Lock";
81 * indicator 3 = "Scroll Lock";
83 * Assigns a name to the keyboard LED (a.k.a indicator) with the given index.
84 * The led may be referred by this name later in the compat section
87 * Effect on the keymap
88 * --------------------
89 * After all of the xkb_keycodes sections have been compiled, the
90 * following members of struct xkb_keymap are finalized:
91 * xkb_keycode_t min_key_code;
92 * xkb_keycode_t max_key_code;
93 * unsigned int num_aliases;
94 * struct xkb_key_alias *key_aliases;
95 * char *keycodes_section_name;
96 * The 'name' field of leds declared in xkb_keycodes:
97 * darray(struct xkb_led) leds;
98 * Further, the array of keys:
99 * struct xkb_key *keys;
100 * had been resized to its final size (i.e. all of the xkb_key objects are
101 * referable by their keycode). However the objects themselves do not
102 * contain any useful information besides the key name at this point.
106 enum merge_mode merge;
113 enum merge_mode merge;
121 enum merge_mode merge;
123 xkb_keycode_t min_key_code;
124 xkb_keycode_t max_key_code;
125 darray(xkb_atom_t) key_names;
126 darray(LedNameInfo) led_names;
127 darray(AliasInfo) aliases;
129 struct xkb_context *ctx;
132 /***====================================================================***/
135 InitAliasInfo(AliasInfo *info, enum merge_mode merge,
136 xkb_atom_t alias, xkb_atom_t real)
138 memset(info, 0, sizeof(*info));
145 FindLedByName(KeyNamesInfo *info, xkb_atom_t name,
146 xkb_led_index_t *idx_out)
151 darray_enumerate(idx, ledi, info->led_names) {
152 if (ledi->name == name) {
162 AddLedName(KeyNamesInfo *info, enum merge_mode merge, bool same_file,
163 LedNameInfo *new, xkb_led_index_t new_idx)
165 xkb_led_index_t old_idx;
167 const int verbosity = xkb_context_get_log_verbosity(info->ctx);
168 const bool report = (same_file && verbosity > 0) || verbosity > 9;
169 const bool replace = (merge == MERGE_REPLACE || merge == MERGE_OVERRIDE);
171 /* LED with the same name already exists. */
172 old = FindLedByName(info, new->name, &old_idx);
174 if (old_idx == new_idx) {
176 "Multiple indicators named \"%s\"; "
177 "Identical definitions ignored\n",
178 xkb_atom_text(info->ctx, new->name));
183 xkb_led_index_t use = (replace ? new_idx + 1 : old_idx + 1);
184 xkb_led_index_t ignore = (replace ? old_idx + 1 : new_idx + 1);
186 "Multiple indicators named %s; Using %d, ignoring %d\n",
187 xkb_atom_text(info->ctx, new->name), use, ignore);
196 if (new_idx >= darray_size(info->led_names))
197 darray_resize0(info->led_names, new_idx + 1);
199 /* LED with the same index already exists. */
200 old = &darray_item(info->led_names, new_idx);
201 if (old->name != XKB_ATOM_NONE) {
203 const xkb_atom_t use = (replace ? new->name : old->name);
204 const xkb_atom_t ignore = (replace ? old->name : new->name);
205 log_warn(info->ctx, "Multiple names for indicator %d; "
206 "Using %s, ignoring %s\n", new_idx + 1,
207 xkb_atom_text(info->ctx, use),
208 xkb_atom_text(info->ctx, ignore));
217 darray_item(info->led_names, new_idx) = *new;
222 ClearKeyNamesInfo(KeyNamesInfo *info)
225 darray_free(info->key_names);
226 darray_free(info->aliases);
227 darray_free(info->led_names);
231 InitKeyNamesInfo(KeyNamesInfo *info, struct xkb_context *ctx)
233 memset(info, 0, sizeof(*info));
235 info->merge = MERGE_DEFAULT;
236 info->min_key_code = XKB_KEYCODE_MAX;
240 FindKeyByName(KeyNamesInfo * info, xkb_atom_t name)
244 for (i = info->min_key_code; i <= info->max_key_code; i++)
245 if (darray_item(info->key_names, i) == name)
248 return XKB_KEYCODE_INVALID;
252 AddKeyName(KeyNamesInfo *info, xkb_keycode_t kc, xkb_atom_t name,
253 enum merge_mode merge, bool same_file, bool report)
256 xkb_keycode_t old_kc;
257 const int verbosity = xkb_context_get_log_verbosity(info->ctx);
259 report = report && ((same_file && verbosity > 0) || verbosity > 7);
261 if (kc >= darray_size(info->key_names))
262 darray_resize0(info->key_names, kc + 1);
264 info->min_key_code = MIN(info->min_key_code, kc);
265 info->max_key_code = MAX(info->max_key_code, kc);
267 /* There's already a key with this keycode. */
268 old_name = darray_item(info->key_names, kc);
269 if (old_name != XKB_ATOM_NONE) {
270 const char *lname = KeyNameText(info->ctx, old_name);
271 const char *kname = KeyNameText(info->ctx, name);
273 if (old_name == name) {
276 "Multiple identical key name definitions; "
277 "Later occurrences of \"%s = %d\" ignored\n",
281 else if (merge == MERGE_AUGMENT) {
284 "Multiple names for keycode %d; "
285 "Using %s, ignoring %s\n", kc, lname, kname);
291 "Multiple names for keycode %d; "
292 "Using %s, ignoring %s\n", kc, kname, lname);
293 darray_item(info->key_names, kc) = XKB_ATOM_NONE;
297 /* There's already a key with this name. */
298 old_kc = FindKeyByName(info, name);
299 if (old_kc != XKB_KEYCODE_INVALID && old_kc != kc) {
300 const char *kname = KeyNameText(info->ctx, name);
302 if (merge == MERGE_OVERRIDE) {
303 darray_item(info->key_names, old_kc) = XKB_ATOM_NONE;
306 "Key name %s assigned to multiple keys; "
307 "Using %d, ignoring %d\n", kname, kc, old_kc);
311 log_vrb(info->ctx, 3,
312 "Key name %s assigned to multiple keys; "
313 "Using %d, ignoring %d\n", kname, old_kc, kc);
318 darray_item(info->key_names, kc) = name;
322 /***====================================================================***/
325 HandleAliasDef(KeyNamesInfo *info, KeyAliasDef *def, enum merge_mode merge);
328 MergeIncludedKeycodes(KeyNamesInfo *into, KeyNamesInfo *from,
329 enum merge_mode merge)
331 if (from->errorCount > 0) {
332 into->errorCount += from->errorCount;
336 if (into->name == NULL) {
337 into->name = from->name;
341 /* Merge key names. */
342 if (darray_empty(into->key_names)) {
343 into->key_names = from->key_names;
344 darray_init(from->key_names);
345 into->min_key_code = from->min_key_code;
346 into->max_key_code = from->max_key_code;
349 if (darray_size(into->key_names) < darray_size(from->key_names))
350 darray_resize0(into->key_names, darray_size(from->key_names));
352 for (unsigned i = from->min_key_code; i <= from->max_key_code; i++) {
353 xkb_atom_t name = darray_item(from->key_names, i);
354 if (name == XKB_ATOM_NONE)
357 if (!AddKeyName(into, i, name, merge, true, false))
362 /* Merge key aliases. */
363 if (darray_empty(into->aliases)) {
364 into->aliases = from->aliases;
365 darray_init(from->aliases);
370 darray_foreach(alias, from->aliases) {
373 def.merge = (merge == MERGE_DEFAULT ? alias->merge : merge);
374 def.alias = alias->alias;
375 def.real = alias->real;
377 if (!HandleAliasDef(into, &def, def.merge))
382 /* Merge LED names. */
383 if (darray_empty(into->led_names)) {
384 into->led_names = from->led_names;
385 darray_init(from->led_names);
391 darray_enumerate(idx, ledi, from->led_names) {
392 if (ledi->name == XKB_ATOM_NONE)
395 ledi->merge = (merge == MERGE_DEFAULT ? ledi->merge : merge);
396 if (!AddLedName(into, ledi->merge, false, ledi, idx))
403 HandleKeycodesFile(KeyNamesInfo *info, XkbFile *file, enum merge_mode merge);
406 HandleIncludeKeycodes(KeyNamesInfo *info, IncludeStmt *include)
408 KeyNamesInfo included;
410 InitKeyNamesInfo(&included, info->ctx);
411 included.name = include->stmt;
412 include->stmt = NULL;
414 for (IncludeStmt *stmt = include; stmt; stmt = stmt->next_incl) {
415 KeyNamesInfo next_incl;
418 file = ProcessIncludeFile(info->ctx, stmt, FILE_TYPE_KEYCODES);
420 info->errorCount += 10;
421 ClearKeyNamesInfo(&included);
425 InitKeyNamesInfo(&next_incl, info->ctx);
427 HandleKeycodesFile(&next_incl, file, MERGE_OVERRIDE);
429 MergeIncludedKeycodes(&included, &next_incl, stmt->merge);
431 ClearKeyNamesInfo(&next_incl);
435 MergeIncludedKeycodes(info, &included, include->merge);
436 ClearKeyNamesInfo(&included);
438 return (info->errorCount == 0);
442 HandleKeycodeDef(KeyNamesInfo *info, KeycodeDef *stmt, enum merge_mode merge)
444 if (stmt->merge != MERGE_DEFAULT) {
445 if (stmt->merge == MERGE_REPLACE)
446 merge = MERGE_OVERRIDE;
451 if (stmt->value < 0 || stmt->value > XKB_KEYCODE_MAX) {
453 "Illegal keycode %lld: must be between 0..%u; "
454 "Key ignored\n", (long long) stmt->value, XKB_KEYCODE_MAX);
458 return AddKeyName(info, stmt->value, stmt->name, merge, false, true);
462 HandleAliasDef(KeyNamesInfo *info, KeyAliasDef *def, enum merge_mode merge)
466 darray_foreach(old, info->aliases) {
467 if (old->alias == def->alias) {
468 if (def->real == old->real) {
469 log_vrb(info->ctx, 1,
470 "Alias of %s for %s declared more than once; "
471 "First definition ignored\n",
472 KeyNameText(info->ctx, def->alias),
473 KeyNameText(info->ctx, def->real));
476 xkb_atom_t use, ignore;
478 use = (merge == MERGE_AUGMENT ? old->real : def->real);
479 ignore = (merge == MERGE_AUGMENT ? def->real : old->real);
482 "Multiple definitions for alias %s; "
483 "Using %s, ignoring %s\n",
484 KeyNameText(info->ctx, old->alias),
485 KeyNameText(info->ctx, use),
486 KeyNameText(info->ctx, ignore));
496 InitAliasInfo(&new, merge, def->alias, def->real);
497 darray_append(info->aliases, new);
502 HandleKeyNameVar(KeyNamesInfo *info, VarDef *stmt)
504 const char *elem, *field;
507 if (!ExprResolveLhs(info->ctx, stmt->name, &elem, &field, &arrayNdx))
511 log_err(info->ctx, "Unknown element %s encountered; "
512 "Default for field %s ignored\n", elem, field);
516 if (!istreq(field, "minimum") && !istreq(field, "maximum")) {
517 log_err(info->ctx, "Unknown field encountered; "
518 "Assignment to field %s ignored\n", field);
522 /* We ignore explicit min/max statements, we always use computed. */
527 HandleLedNameDef(KeyNamesInfo *info, LedNameDef *def,
528 enum merge_mode merge)
533 if (def->ndx < 1 || def->ndx > XKB_MAX_LEDS) {
536 "Illegal indicator index (%d) specified; must be between 1 .. %d; "
537 "Ignored\n", def->ndx, XKB_MAX_LEDS);
541 if (!ExprResolveString(info->ctx, def->name, &name)) {
543 snprintf(buf, sizeof(buf), "%d", def->ndx);
545 return ReportBadType(info->ctx, "indicator", "name", buf, "string");
548 ledi.merge = info->merge;
550 return AddLedName(info, merge, true, &ledi, def->ndx - 1);
554 HandleKeycodesFile(KeyNamesInfo *info, XkbFile *file, enum merge_mode merge)
559 info->name = strdup_safe(file->name);
561 for (ParseCommon *stmt = file->defs; stmt; stmt = stmt->next) {
562 switch (stmt->type) {
564 ok = HandleIncludeKeycodes(info, (IncludeStmt *) stmt);
567 ok = HandleKeycodeDef(info, (KeycodeDef *) stmt, merge);
570 ok = HandleAliasDef(info, (KeyAliasDef *) stmt, merge);
573 ok = HandleKeyNameVar(info, (VarDef *) stmt);
576 ok = HandleLedNameDef(info, (LedNameDef *) stmt, merge);
580 "Keycode files may define key and indicator names only; "
581 "Ignoring %s\n", stmt_type_to_string(stmt->type));
589 if (info->errorCount > 10) {
590 log_err(info->ctx, "Abandoning keycodes file \"%s\"\n",
597 /***====================================================================***/
600 CopyKeyNamesToKeymap(struct xkb_keymap *keymap, KeyNamesInfo *info)
608 keymap->keycodes_section_name = strdup_safe(info->name);
610 keymap->min_key_code = info->min_key_code;
611 keymap->max_key_code = info->max_key_code;
613 /* Copy key names. */
614 keymap->keys = calloc(info->max_key_code + 1, sizeof(*keymap->keys));
615 for (kc = info->min_key_code; kc <= info->max_key_code; kc++) {
616 keymap->keys[kc].keycode = kc;
617 keymap->keys[kc].name = darray_item(info->key_names, kc);
621 * Do some sanity checking on the aliases. We can't do it before
622 * because keys and their aliases may be added out-of-order.
624 keymap->num_key_aliases = 0;
625 darray_foreach(alias, info->aliases) {
626 /* Check that ->real is a key. */
627 if (!XkbKeyByName(keymap, alias->real, false)) {
628 log_vrb(info->ctx, 5,
629 "Attempt to alias %s to non-existent key %s; Ignored\n",
630 KeyNameText(info->ctx, alias->alias),
631 KeyNameText(info->ctx, alias->real));
632 alias->real = XKB_ATOM_NONE;
636 /* Check that ->alias is not a key. */
637 if (XkbKeyByName(keymap, alias->alias, false)) {
638 log_vrb(info->ctx, 5,
639 "Attempt to create alias with the name of a real key; "
640 "Alias \"%s = %s\" ignored\n",
641 KeyNameText(info->ctx, alias->alias),
642 KeyNameText(info->ctx, alias->real));
643 alias->real = XKB_ATOM_NONE;
647 keymap->num_key_aliases++;
650 /* Copy key aliases. */
651 keymap->key_aliases = calloc(keymap->num_key_aliases,
652 sizeof(*keymap->key_aliases));
654 darray_foreach(alias, info->aliases) {
655 if (alias->real != XKB_ATOM_NONE) {
656 keymap->key_aliases[i].alias = alias->alias;
657 keymap->key_aliases[i].real = alias->real;
662 /* Copy LED names. */
663 darray_resize0(keymap->leds, darray_size(info->led_names));
664 darray_enumerate(idx, ledi, info->led_names)
665 if (ledi->name != XKB_ATOM_NONE)
666 darray_item(keymap->leds, idx).name = ledi->name;
671 /***====================================================================***/
674 CompileKeycodes(XkbFile *file, struct xkb_keymap *keymap,
675 enum merge_mode merge)
679 InitKeyNamesInfo(&info, keymap->ctx);
681 HandleKeycodesFile(&info, file, merge);
682 if (info.errorCount != 0)
685 if (!CopyKeyNamesToKeymap(keymap, &info))
688 ClearKeyNamesInfo(&info);
692 ClearKeyNamesInfo(&info);