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"
34 * The xkb_types section
35 * =====================
36 * This section is the second to be processesed, after xkb_keycodes.
37 * However, it is completely independent and could have been the first
38 * to be processed (it does not refer to specific keys as specified in
39 * the xkb_keycodes section).
41 * This section defines key types, which, given a key and a keyboard
42 * state (i.e. modifier state and group), determine the shift level to
43 * be used in translating the key to keysyms. These types are assigned
44 * to each group in each key, in the xkb_symbols section.
46 * Key types are called this way because, in a way, they really describe
47 * the "type" of the key (or more correctly, a specific group of the
48 * key). For example, an ordinary keymap will provide a type called
49 * "KEYPAD", which consists of two levels, with the second level being
50 * chosen according to the state of the Num Lock (or Shift) modifiers.
51 * Another example is a type called "ONE_LEVEL", which is usually
52 * assigned to keys such as Escape; these have just one level and are
53 * not affected by the modifier state. Yet more common examples are
54 * "TWO_LEVEL" (with Shift choosing the second level), "ALPHABETIC"
55 * (where Caps Lock may also choose the second level), etc.
59 * Statements of the form:
60 * type "FOUR_LEVEL" { ... }
62 * The above would create a new type named "FOUR_LEVEL".
63 * The body of the definition may include statements of the following
66 * - level_name statements (mandatory for each level in the type):
67 * level_name[Level1] = "Base";
69 * Gives each level in this type a descriptive name. It isn't used
71 * Note: A level may be specified as Level[1-8] or just a number (can
74 * - modifiers statement (mandatory, should be specified only once):
75 * modifiers = Shift+Lock+LevelThree;
77 * A mask of real and virtual modifiers. These are the only modifiers
78 * being considered when matching the modifier state against the type.
79 * The other modifiers, whether active or not, are masked out in the
82 * - map entry statements (should have at least as many mappings as there
83 * are levels in the type):
84 * map[Shift+LevelThree] = Level4;
86 * If the active modifiers, masked with the type's modifiers (as stated
87 * above), match (i.e. equal) the modifiers inside the map[] statement,
88 * then the level in the right hand side is chosen. For example, in the
89 * above, if in the current keyboard state the Shift and LevelThree
90 * modifiers are active, while the Lock modifier is not, then the
91 * keysym(s) in the 4th level of the group will be returned to the
94 * - preserve statements:
95 * map[Shift+Lock+LevelThree] = Level5;
96 * preserve[Shift+Lock+LevelThree] = Lock;
98 * When a map entry matches the active modifiers and the level it
99 * specified is chosen, then these modifiers are said to be "consumed";
100 * for example, in a simple US keymap where the "g" key is assigned an
101 * ordinary ALPHABETIC key type, if the Lock (Caps Lock) modifier is
102 * active and the key is pressed, then a "G" keysym is produced (as
103 * opposed to lower-case "g"). This is because the type definition has
104 * a map entry like the following:
105 * map[Lock] = Level2;
106 * And as such the Lock modifier is consumed. This information is
107 * relevant for applications which further process the modifiers,
108 * since by then the consumed modifiers have already "done their part"
109 * and should be masked out.
111 * However, sometimes even if a modifier is actually used to choose
112 * the shift level (as Lock above), it should *not* be reported as
113 * consumed, for various reasons. In this case, a preserve[] statement
114 * can be used to augment the map entry. The modifiers inside the square
115 * brackets should match one of the map[] statements in the type. The
116 * right hand side should consists of modifiers from the left hand
117 * side; these modifiers are then "preserved" and not reported as
120 * Virtual modifier statements
121 * ---------------------------
122 * Statements of the form:
123 * virtual_modifiers LControl;
125 * Can appear in the xkb_types, xkb_compat, xkb_symbols sections.
130 * After all of the xkb_types sections have been compiled, the following
131 * members of struct xkb_keymap are finalized:
132 * struct xkb_key_type *types;
133 * unsigned int num_types;
134 * char *types_section_name;
135 * TODO: virtual modifiers.
139 TYPE_FIELD_MASK = (1 << 0),
140 TYPE_FIELD_MAP = (1 << 1),
141 TYPE_FIELD_PRESERVE = (1 << 2),
142 TYPE_FIELD_LEVEL_NAME = (1 << 3),
146 enum type_field defined;
148 enum merge_mode merge;
152 xkb_level_index_t num_levels;
153 darray(struct xkb_kt_map_entry) entries;
154 darray(xkb_atom_t) level_names;
162 darray(KeyTypeInfo) types;
163 struct xkb_keymap *keymap;
166 /***====================================================================***/
168 static inline const char *
169 MapEntryTxt(KeyTypesInfo *info, struct xkb_kt_map_entry *entry)
171 return ModMaskText(info->keymap, entry->mods.mods);
174 static inline const char *
175 TypeTxt(KeyTypesInfo *info, KeyTypeInfo *type)
177 return xkb_atom_text(info->keymap->ctx, type->name);
180 static inline const char *
181 TypeMaskTxt(KeyTypesInfo *info, KeyTypeInfo *type)
183 return ModMaskText(info->keymap, type->mods);
187 ReportTypeShouldBeArray(KeyTypesInfo *info, KeyTypeInfo *type,
190 return ReportShouldBeArray(info->keymap->ctx, "key type", field,
191 TypeTxt(info, type));
195 ReportTypeBadType(KeyTypesInfo *info, KeyTypeInfo *type,
196 const char *field, const char *wanted)
198 return ReportBadType(info->keymap->ctx, "key type", field,
199 TypeTxt(info, type), wanted);
203 ReportTypeBadWidth(KeyTypesInfo *info, const char *type, int has, int needs)
205 log_err(info->keymap->ctx,
206 "Key type \"%s\" has %d levels, must have %d; "
207 "Illegal type definition ignored\n",
212 /***====================================================================***/
215 InitKeyTypesInfo(KeyTypesInfo *info, struct xkb_keymap *keymap,
218 memset(info, 0, sizeof(*info));
219 info->keymap = keymap;
220 info->file_id = file_id;
224 ClearKeyTypeInfo(KeyTypeInfo *type)
226 darray_free(type->entries);
227 darray_free(type->level_names);
231 ClearKeyTypesInfo(KeyTypesInfo *info)
234 darray_free(info->types);
238 FindMatchingKeyType(KeyTypesInfo *info, xkb_atom_t name)
242 darray_foreach(old, info->types)
243 if (old->name == name)
250 AddKeyType(KeyTypesInfo *info, KeyTypeInfo *new)
253 int verbosity = xkb_context_get_log_verbosity(info->keymap->ctx);
255 old = FindMatchingKeyType(info, new->name);
257 if (new->merge == MERGE_REPLACE || new->merge == MERGE_OVERRIDE) {
258 if ((old->file_id == new->file_id && verbosity > 0) ||
260 log_warn(info->keymap->ctx,
261 "Multiple definitions of the %s key type; "
262 "Earlier definition ignored\n",
263 xkb_atom_text(info->keymap->ctx, new->name));
266 ClearKeyTypeInfo(old);
268 darray_init(new->entries);
269 darray_init(new->level_names);
273 if (old->file_id == new->file_id)
274 log_vrb(info->keymap->ctx, 4,
275 "Multiple definitions of the %s key type; "
276 "Later definition ignored\n",
277 xkb_atom_text(info->keymap->ctx, new->name));
279 ClearKeyTypeInfo(new);
283 new->file_id = info->file_id;
284 darray_append(info->types, *new);
288 /***====================================================================***/
291 MergeIncludedKeyTypes(KeyTypesInfo *into, KeyTypesInfo *from,
292 enum merge_mode merge)
296 if (from->errorCount > 0) {
297 into->errorCount += from->errorCount;
301 if (into->name == NULL) {
302 into->name = from->name;
306 darray_foreach(type, from->types) {
307 type->merge = (merge == MERGE_DEFAULT ? type->merge : merge);
308 if (!AddKeyType(into, type))
314 HandleKeyTypesFile(KeyTypesInfo *info, XkbFile *file, enum merge_mode merge);
317 HandleIncludeKeyTypes(KeyTypesInfo *info, IncludeStmt *include)
319 KeyTypesInfo included;
321 InitKeyTypesInfo(&included, info->keymap, info->file_id);
322 included.name = include->stmt;
323 include->stmt = NULL;
325 for (IncludeStmt *stmt = include; stmt; stmt = stmt->next_incl) {
326 KeyTypesInfo next_incl;
329 file = ProcessIncludeFile(info->keymap->ctx, stmt, FILE_TYPE_TYPES);
331 info->errorCount += 10;
332 ClearKeyTypesInfo(&included);
336 InitKeyTypesInfo(&next_incl, info->keymap, file->id);
338 HandleKeyTypesFile(&next_incl, file, stmt->merge);
340 MergeIncludedKeyTypes(&included, &next_incl, stmt->merge);
342 ClearKeyTypesInfo(&next_incl);
346 MergeIncludedKeyTypes(info, &included, include->merge);
347 ClearKeyTypesInfo(&included);
349 return (info->errorCount == 0);
352 /***====================================================================***/
355 SetModifiers(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
361 log_warn(info->keymap->ctx,
362 "The modifiers field of a key type is not an array; "
363 "Illegal array subscript ignored\n");
365 if (!ExprResolveModMask(info->keymap, value, MOD_BOTH, &mods)) {
366 log_err(info->keymap->ctx,
367 "Key type mask field must be a modifier mask; "
368 "Key type definition ignored\n");
372 if (type->defined & TYPE_FIELD_MASK) {
373 log_warn(info->keymap->ctx,
374 "Multiple modifier mask definitions for key type %s; "
375 "Using %s, ignoring %s\n",
376 xkb_atom_text(info->keymap->ctx, type->name),
377 TypeMaskTxt(info, type),
378 ModMaskText(info->keymap, mods));
386 /***====================================================================***/
388 static struct xkb_kt_map_entry *
389 FindMatchingMapEntry(KeyTypeInfo *type, xkb_mod_mask_t mods)
391 struct xkb_kt_map_entry *entry;
393 darray_foreach(entry, type->entries)
394 if (entry->mods.mods == mods)
401 AddMapEntry(KeyTypesInfo *info, KeyTypeInfo *type,
402 struct xkb_kt_map_entry *new, bool clobber, bool report)
404 struct xkb_kt_map_entry * old;
406 old = FindMatchingMapEntry(type, new->mods.mods);
408 if (report && old->level != new->level) {
409 log_warn(info->keymap->ctx,
410 "Multiple map entries for %s in %s; "
411 "Using %d, ignoring %d\n",
412 MapEntryTxt(info, new), TypeTxt(info, type),
413 (clobber ? new->level : old->level) + 1,
414 (clobber ? old->level : new->level) + 1);
417 log_vrb(info->keymap->ctx, 10,
418 "Multiple occurrences of map[%s]= %d in %s; Ignored\n",
419 MapEntryTxt(info, new), new->level + 1,
420 TypeTxt(info, type));
425 if (new->level >= type->num_levels)
426 type->num_levels = new->level + 1;
427 old->level = new->level;
433 if (new->level >= type->num_levels)
434 type->num_levels = new->level + 1;
436 darray_append(type->entries, *new);
441 SetMapEntry(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
444 struct xkb_kt_map_entry entry;
446 if (arrayNdx == NULL)
447 return ReportTypeShouldBeArray(info, type, "map entry");
449 if (!ExprResolveModMask(info->keymap, arrayNdx, MOD_BOTH, &entry.mods.mods))
450 return ReportTypeBadType(info, type, "map entry", "modifier mask");
452 if (entry.mods.mods & (~type->mods)) {
453 log_vrb(info->keymap->ctx, 1,
454 "Map entry for unused modifiers in %s; "
455 "Using %s instead of %s\n",
457 ModMaskText(info->keymap, entry.mods.mods & type->mods),
458 MapEntryTxt(info, &entry));
459 entry.mods.mods &= type->mods;
462 if (!ExprResolveLevel(info->keymap->ctx, value, &entry.level)) {
463 log_err(info->keymap->ctx,
464 "Level specifications in a key type must be integer; "
465 "Ignoring malformed level specification\n");
469 entry.preserve.mods = 0;
471 return AddMapEntry(info, type, &entry, true, true);
474 /***====================================================================***/
477 AddPreserve(KeyTypesInfo *info, KeyTypeInfo *type,
478 xkb_mod_mask_t mods, xkb_mod_mask_t preserve_mods)
480 struct xkb_kt_map_entry *entry;
481 struct xkb_kt_map_entry new;
483 darray_foreach(entry, type->entries) {
484 if (entry->mods.mods != mods)
487 /* Map exists without previous preserve (or "None"); override. */
488 if (entry->preserve.mods == 0) {
489 entry->preserve.mods = preserve_mods;
493 /* Map exists with same preserve; do nothing. */
494 if (entry->preserve.mods == preserve_mods) {
495 log_vrb(info->keymap->ctx, 10,
496 "Identical definitions for preserve[%s] in %s; "
498 ModMaskText(info->keymap, mods),
499 TypeTxt(info, type));
503 /* Map exists with different preserve; latter wins. */
504 log_vrb(info->keymap->ctx, 1,
505 "Multiple definitions for preserve[%s] in %s; "
506 "Using %s, ignoring %s\n",
507 ModMaskText(info->keymap, mods),
509 ModMaskText(info->keymap, preserve_mods),
510 ModMaskText(info->keymap, entry->preserve.mods));
512 entry->preserve.mods = preserve_mods;
517 * Map does not exist, i.e. preserve[] came before map[].
518 * Create a map with the specified mask mapping to Level1. The level
519 * may be overridden later with an explicit map[] statement.
522 new.mods.mods = mods;
523 new.preserve.mods = preserve_mods;
524 darray_append(type->entries, new);
529 SetPreserve(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
532 xkb_mod_mask_t mods, preserve_mods;
534 if (arrayNdx == NULL)
535 return ReportTypeShouldBeArray(info, type, "preserve entry");
537 if (!ExprResolveModMask(info->keymap, arrayNdx, MOD_BOTH, &mods))
538 return ReportTypeBadType(info, type, "preserve entry",
541 if (mods & ~type->mods) {
542 const char *before, *after;
544 before = ModMaskText(info->keymap, mods);
546 after = ModMaskText(info->keymap, mods);
548 log_vrb(info->keymap->ctx, 1,
549 "Preserve for modifiers not used by the %s type; "
550 "Index %s converted to %s\n",
551 TypeTxt(info, type), before, after);
554 if (!ExprResolveModMask(info->keymap, value, MOD_BOTH, &preserve_mods)) {
555 log_err(info->keymap->ctx,
556 "Preserve value in a key type is not a modifier mask; "
557 "Ignoring preserve[%s] in type %s\n",
558 ModMaskText(info->keymap, mods),
559 TypeTxt(info, type));
563 if (preserve_mods & ~mods) {
564 const char *before, *after;
566 before = ModMaskText(info->keymap, preserve_mods);
567 preserve_mods &= mods;
568 after = ModMaskText(info->keymap, preserve_mods);
570 log_vrb(info->keymap->ctx, 1,
571 "Illegal value for preserve[%s] in type %s; "
572 "Converted %s to %s\n",
573 ModMaskText(info->keymap, mods),
574 TypeTxt(info, type), before, after);
577 return AddPreserve(info, type, mods, preserve_mods);
580 /***====================================================================***/
583 AddLevelName(KeyTypesInfo *info, KeyTypeInfo *type,
584 xkb_level_index_t level, xkb_atom_t name, bool clobber)
587 if (level >= darray_size(type->level_names)) {
588 darray_resize0(type->level_names, level + 1);
592 /* Same level, same name. */
593 if (darray_item(type->level_names, level) == name) {
594 log_vrb(info->keymap->ctx, 10,
595 "Duplicate names for level %d of key type %s; Ignored\n",
596 level + 1, TypeTxt(info, type));
600 /* Same level, different name. */
601 if (darray_item(type->level_names, level) != XKB_ATOM_NONE) {
602 const char *old, *new;
603 old = xkb_atom_text(info->keymap->ctx,
604 darray_item(type->level_names, level));
605 new = xkb_atom_text(info->keymap->ctx, name);
606 log_vrb(info->keymap->ctx, 1,
607 "Multiple names for level %d of key type %s; "
608 "Using %s, ignoring %s\n",
609 level + 1, TypeTxt(info, type),
610 (clobber ? new : old), (clobber ? old : new));
616 /* XXX: What about different level, same name? */
619 darray_item(type->level_names, level) = name;
624 SetLevelName(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
627 xkb_level_index_t level;
628 xkb_atom_t level_name;
629 struct xkb_context *ctx = info->keymap->ctx;
631 if (arrayNdx == NULL)
632 return ReportTypeShouldBeArray(info, type, "level name");
634 if (!ExprResolveLevel(ctx, arrayNdx, &level))
635 return ReportTypeBadType(info, type, "level name", "integer");
637 if (!ExprResolveString(ctx, value, &level_name)) {
638 log_err(info->keymap->ctx,
639 "Non-string name for level %d in key type %s; "
640 "Ignoring illegal level name definition\n",
641 level + 1, xkb_atom_text(ctx, type->name));
645 return AddLevelName(info, type, level, level_name, true);
648 /***====================================================================***/
651 SetKeyTypeField(KeyTypesInfo *info, KeyTypeInfo *type,
652 const char *field, ExprDef *arrayNdx, ExprDef *value)
655 enum type_field type_field = 0;
657 if (istreq(field, "modifiers")) {
658 type_field = TYPE_FIELD_MASK;
659 ok = SetModifiers(info, type, arrayNdx, value);
661 else if (istreq(field, "map")) {
662 type_field = TYPE_FIELD_MAP;
663 ok = SetMapEntry(info, type, arrayNdx, value);
665 else if (istreq(field, "preserve")) {
666 type_field = TYPE_FIELD_PRESERVE;
667 ok = SetPreserve(info, type, arrayNdx, value);
669 else if (istreq(field, "levelname") || istreq(field, "level_name")) {
670 type_field = TYPE_FIELD_LEVEL_NAME;
671 ok = SetLevelName(info, type, arrayNdx, value);
673 log_err(info->keymap->ctx,
674 "Unknown field %s in key type %s; Definition ignored\n",
675 field, TypeTxt(info, type));
678 type->defined |= type_field;
683 HandleKeyTypeBody(KeyTypesInfo *info, VarDef *def, KeyTypeInfo *type)
686 const char *elem, *field;
689 for (; def; def = (VarDef *) def->common.next) {
690 ok = ExprResolveLhs(info->keymap->ctx, def->name, &elem, &field,
695 if (elem && istreq(elem, "type")) {
696 log_err(info->keymap->ctx,
697 "Support for changing the default type has been removed; "
698 "Statement ignored\n");
702 ok = SetKeyTypeField(info, type, field, arrayNdx, def->value);
709 HandleKeyTypeDef(KeyTypesInfo *info, KeyTypeDef *def, enum merge_mode merge)
713 .file_id = info->file_id,
714 .merge = (def->merge == MERGE_DEFAULT ? merge : def->merge),
718 .entries = darray_new(),
719 .level_names = darray_new(),
722 if (!HandleKeyTypeBody(info, def->body, &type)) {
727 if (!AddKeyType(info, &type)) {
736 HandleKeyTypesFile(KeyTypesInfo *info, XkbFile *file, enum merge_mode merge)
741 info->name = strdup_safe(file->name);
743 for (ParseCommon *stmt = file->defs; stmt; stmt = stmt->next) {
744 switch (stmt->type) {
746 ok = HandleIncludeKeyTypes(info, (IncludeStmt *) stmt);
749 ok = HandleKeyTypeDef(info, (KeyTypeDef *) stmt, merge);
752 log_err(info->keymap->ctx,
753 "Support for changing the default type has been removed; "
754 "Statement ignored\n");
758 ok = HandleVModDef(info->keymap, (VModDef *) stmt);
761 log_err(info->keymap->ctx,
762 "Key type files may not include other declarations; "
763 "Ignoring %s\n", stmt_type_to_string(stmt->type));
771 if (info->errorCount > 10) {
772 log_err(info->keymap->ctx,
773 "Abandoning keytypes file \"%s\"\n", file->topName);
780 CopyDefToKeyType(KeyTypeInfo *def, struct xkb_key_type *type)
782 type->mods.mods = def->mods;
783 type->num_levels = def->num_levels;
784 type->map = darray_mem(def->entries, 0);
785 type->num_entries = darray_size(def->entries);
786 darray_init(def->entries);
787 type->name = def->name;
788 type->level_names = darray_mem(def->level_names, 0);
789 darray_init(def->level_names);
793 CopyKeyTypesToKeymap(struct xkb_keymap *keymap, KeyTypesInfo *info)
796 unsigned int num_types;
798 num_types = darray_size(info->types) ? darray_size(info->types) : 1;
799 keymap->types = calloc(num_types, sizeof(*keymap->types));
803 keymap->num_types = num_types;
806 * If no types were specified, a default unnamed one-level type is
809 if (darray_empty(info->types)) {
811 .name = xkb_atom_intern(keymap->ctx, "default"),
814 .entries = darray_new(),
815 .level_names = darray_new(),
818 CopyDefToKeyType(&dflt, &keymap->types[0]);
820 for (i = 0; i < num_types; i++)
821 CopyDefToKeyType(&darray_item(info->types, i), &keymap->types[i]);
824 keymap->types_section_name = strdup_safe(info->name);
830 CompileKeyTypes(XkbFile *file, struct xkb_keymap *keymap,
831 enum merge_mode merge)
835 InitKeyTypesInfo(&info, keymap, file->id);
837 HandleKeyTypesFile(&info, file, merge);
838 if (info.errorCount != 0)
841 if (!CopyKeyTypesToKeymap(keymap, &info))
844 ClearKeyTypesInfo(&info);
848 ClearKeyTypesInfo(&info);