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comparison: widget/gonk/libui/KeyCharacterMap.cpp
widget/gonk/libui/KeyCharacterMap.cpp
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| -1:000000000000 | 0:7bd53e3bae80 |
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| 1 /* | |
| 2 * Copyright (C) 2008 The Android Open Source Project | |
| 3 * | |
| 4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 * you may not use this file except in compliance with the License. | |
| 6 * You may obtain a copy of the License at | |
| 7 * | |
| 8 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 * | |
| 10 * Unless required by applicable law or agreed to in writing, software | |
| 11 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 * See the License for the specific language governing permissions and | |
| 14 * limitations under the License. | |
| 15 */ | |
| 16 | |
| 17 #define LOG_TAG "KeyCharacterMap" | |
| 18 #include "cutils_log.h" | |
| 19 | |
| 20 #include <stdlib.h> | |
| 21 #include <string.h> | |
| 22 #include "android_keycodes.h" | |
| 23 #include "Keyboard.h" | |
| 24 #include "KeyCharacterMap.h" | |
| 25 | |
| 26 #if HAVE_ANDROID_OS | |
| 27 #include <binder/Parcel.h> | |
| 28 #endif | |
| 29 | |
| 30 #include <utils/Errors.h> | |
| 31 #include "Tokenizer.h" | |
| 32 #include <utils/Timers.h> | |
| 33 | |
| 34 // Enables debug output for the parser. | |
| 35 #define DEBUG_PARSER 0 | |
| 36 | |
| 37 // Enables debug output for parser performance. | |
| 38 #define DEBUG_PARSER_PERFORMANCE 0 | |
| 39 | |
| 40 // Enables debug output for mapping. | |
| 41 #define DEBUG_MAPPING 0 | |
| 42 | |
| 43 | |
| 44 namespace android { | |
| 45 | |
| 46 static const char* WHITESPACE = " \t\r"; | |
| 47 static const char* WHITESPACE_OR_PROPERTY_DELIMITER = " \t\r,:"; | |
| 48 | |
| 49 struct Modifier { | |
| 50 const char* label; | |
| 51 int32_t metaState; | |
| 52 }; | |
| 53 static const Modifier modifiers[] = { | |
| 54 { "shift", AMETA_SHIFT_ON }, | |
| 55 { "lshift", AMETA_SHIFT_LEFT_ON }, | |
| 56 { "rshift", AMETA_SHIFT_RIGHT_ON }, | |
| 57 { "alt", AMETA_ALT_ON }, | |
| 58 { "lalt", AMETA_ALT_LEFT_ON }, | |
| 59 { "ralt", AMETA_ALT_RIGHT_ON }, | |
| 60 { "ctrl", AMETA_CTRL_ON }, | |
| 61 { "lctrl", AMETA_CTRL_LEFT_ON }, | |
| 62 { "rctrl", AMETA_CTRL_RIGHT_ON }, | |
| 63 { "meta", AMETA_META_ON }, | |
| 64 { "lmeta", AMETA_META_LEFT_ON }, | |
| 65 { "rmeta", AMETA_META_RIGHT_ON }, | |
| 66 { "sym", AMETA_SYM_ON }, | |
| 67 { "fn", AMETA_FUNCTION_ON }, | |
| 68 { "capslock", AMETA_CAPS_LOCK_ON }, | |
| 69 { "numlock", AMETA_NUM_LOCK_ON }, | |
| 70 { "scrolllock", AMETA_SCROLL_LOCK_ON }, | |
| 71 }; | |
| 72 | |
| 73 #if DEBUG_MAPPING | |
| 74 static String8 toString(const char16_t* chars, size_t numChars) { | |
| 75 String8 result; | |
| 76 for (size_t i = 0; i < numChars; i++) { | |
| 77 result.appendFormat(i == 0 ? "%d" : ", %d", chars[i]); | |
| 78 } | |
| 79 return result; | |
| 80 } | |
| 81 #endif | |
| 82 | |
| 83 | |
| 84 // --- KeyCharacterMap --- | |
| 85 | |
| 86 sp<KeyCharacterMap> KeyCharacterMap::sEmpty = new KeyCharacterMap(); | |
| 87 | |
| 88 KeyCharacterMap::KeyCharacterMap() : | |
| 89 mType(KEYBOARD_TYPE_UNKNOWN) { | |
| 90 } | |
| 91 | |
| 92 KeyCharacterMap::KeyCharacterMap(const KeyCharacterMap& other) : | |
| 93 RefBase(), mType(other.mType), mKeysByScanCode(other.mKeysByScanCode), | |
| 94 mKeysByUsageCode(other.mKeysByUsageCode) { | |
| 95 for (size_t i = 0; i < other.mKeys.size(); i++) { | |
| 96 mKeys.add(other.mKeys.keyAt(i), new Key(*other.mKeys.valueAt(i))); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 KeyCharacterMap::~KeyCharacterMap() { | |
| 101 for (size_t i = 0; i < mKeys.size(); i++) { | |
| 102 Key* key = mKeys.editValueAt(i); | |
| 103 delete key; | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 status_t KeyCharacterMap::load(const String8& filename, | |
| 108 Format format, sp<KeyCharacterMap>* outMap) { | |
| 109 outMap->clear(); | |
| 110 | |
| 111 Tokenizer* tokenizer; | |
| 112 status_t status = Tokenizer::open(filename, &tokenizer); | |
| 113 if (status) { | |
| 114 ALOGE("Error %d opening key character map file %s.", status, filename.string()); | |
| 115 } else { | |
| 116 status = load(tokenizer, format, outMap); | |
| 117 delete tokenizer; | |
| 118 } | |
| 119 return status; | |
| 120 } | |
| 121 | |
| 122 status_t KeyCharacterMap::loadContents(const String8& filename, const char* contents, | |
| 123 Format format, sp<KeyCharacterMap>* outMap) { | |
| 124 outMap->clear(); | |
| 125 | |
| 126 Tokenizer* tokenizer; | |
| 127 status_t status = Tokenizer::fromContents(filename, contents, &tokenizer); | |
| 128 if (status) { | |
| 129 ALOGE("Error %d opening key character map.", status); | |
| 130 } else { | |
| 131 status = load(tokenizer, format, outMap); | |
| 132 delete tokenizer; | |
| 133 } | |
| 134 return status; | |
| 135 } | |
| 136 | |
| 137 status_t KeyCharacterMap::load(Tokenizer* tokenizer, | |
| 138 Format format, sp<KeyCharacterMap>* outMap) { | |
| 139 status_t status = OK; | |
| 140 sp<KeyCharacterMap> map = new KeyCharacterMap(); | |
| 141 if (!map.get()) { | |
| 142 ALOGE("Error allocating key character map."); | |
| 143 status = NO_MEMORY; | |
| 144 } else { | |
| 145 #if DEBUG_PARSER_PERFORMANCE | |
| 146 nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC); | |
| 147 #endif | |
| 148 Parser parser(map.get(), tokenizer, format); | |
| 149 status = parser.parse(); | |
| 150 #if DEBUG_PARSER_PERFORMANCE | |
| 151 nsecs_t elapsedTime = systemTime(SYSTEM_TIME_MONOTONIC) - startTime; | |
| 152 ALOGD("Parsed key character map file '%s' %d lines in %0.3fms.", | |
| 153 tokenizer->getFilename().string(), tokenizer->getLineNumber(), | |
| 154 elapsedTime / 1000000.0); | |
| 155 #endif | |
| 156 if (!status) { | |
| 157 *outMap = map; | |
| 158 } | |
| 159 } | |
| 160 return status; | |
| 161 } | |
| 162 | |
| 163 sp<KeyCharacterMap> KeyCharacterMap::combine(const sp<KeyCharacterMap>& base, | |
| 164 const sp<KeyCharacterMap>& overlay) { | |
| 165 if (overlay == NULL) { | |
| 166 return base; | |
| 167 } | |
| 168 if (base == NULL) { | |
| 169 return overlay; | |
| 170 } | |
| 171 | |
| 172 sp<KeyCharacterMap> map = new KeyCharacterMap(*base.get()); | |
| 173 for (size_t i = 0; i < overlay->mKeys.size(); i++) { | |
| 174 int32_t keyCode = overlay->mKeys.keyAt(i); | |
| 175 Key* key = overlay->mKeys.valueAt(i); | |
| 176 ssize_t oldIndex = map->mKeys.indexOfKey(keyCode); | |
| 177 if (oldIndex >= 0) { | |
| 178 delete map->mKeys.valueAt(oldIndex); | |
| 179 map->mKeys.editValueAt(oldIndex) = new Key(*key); | |
| 180 } else { | |
| 181 map->mKeys.add(keyCode, new Key(*key)); | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 for (size_t i = 0; i < overlay->mKeysByScanCode.size(); i++) { | |
| 186 map->mKeysByScanCode.replaceValueFor(overlay->mKeysByScanCode.keyAt(i), | |
| 187 overlay->mKeysByScanCode.valueAt(i)); | |
| 188 } | |
| 189 | |
| 190 for (size_t i = 0; i < overlay->mKeysByUsageCode.size(); i++) { | |
| 191 map->mKeysByUsageCode.replaceValueFor(overlay->mKeysByUsageCode.keyAt(i), | |
| 192 overlay->mKeysByUsageCode.valueAt(i)); | |
| 193 } | |
| 194 return map; | |
| 195 } | |
| 196 | |
| 197 sp<KeyCharacterMap> KeyCharacterMap::empty() { | |
| 198 return sEmpty; | |
| 199 } | |
| 200 | |
| 201 int32_t KeyCharacterMap::getKeyboardType() const { | |
| 202 return mType; | |
| 203 } | |
| 204 | |
| 205 char16_t KeyCharacterMap::getDisplayLabel(int32_t keyCode) const { | |
| 206 char16_t result = 0; | |
| 207 const Key* key; | |
| 208 if (getKey(keyCode, &key)) { | |
| 209 result = key->label; | |
| 210 } | |
| 211 #if DEBUG_MAPPING | |
| 212 ALOGD("getDisplayLabel: keyCode=%d ~ Result %d.", keyCode, result); | |
| 213 #endif | |
| 214 return result; | |
| 215 } | |
| 216 | |
| 217 char16_t KeyCharacterMap::getNumber(int32_t keyCode) const { | |
| 218 char16_t result = 0; | |
| 219 const Key* key; | |
| 220 if (getKey(keyCode, &key)) { | |
| 221 result = key->number; | |
| 222 } | |
| 223 #if DEBUG_MAPPING | |
| 224 ALOGD("getNumber: keyCode=%d ~ Result %d.", keyCode, result); | |
| 225 #endif | |
| 226 return result; | |
| 227 } | |
| 228 | |
| 229 char16_t KeyCharacterMap::getCharacter(int32_t keyCode, int32_t metaState) const { | |
| 230 char16_t result = 0; | |
| 231 const Key* key; | |
| 232 const Behavior* behavior; | |
| 233 if (getKeyBehavior(keyCode, metaState, &key, &behavior)) { | |
| 234 result = behavior->character; | |
| 235 } | |
| 236 #if DEBUG_MAPPING | |
| 237 ALOGD("getCharacter: keyCode=%d, metaState=0x%08x ~ Result %d.", keyCode, metaState, result); | |
| 238 #endif | |
| 239 return result; | |
| 240 } | |
| 241 | |
| 242 bool KeyCharacterMap::getFallbackAction(int32_t keyCode, int32_t metaState, | |
| 243 FallbackAction* outFallbackAction) const { | |
| 244 outFallbackAction->keyCode = 0; | |
| 245 outFallbackAction->metaState = 0; | |
| 246 | |
| 247 bool result = false; | |
| 248 const Key* key; | |
| 249 const Behavior* behavior; | |
| 250 if (getKeyBehavior(keyCode, metaState, &key, &behavior)) { | |
| 251 if (behavior->fallbackKeyCode) { | |
| 252 outFallbackAction->keyCode = behavior->fallbackKeyCode; | |
| 253 outFallbackAction->metaState = metaState & ~behavior->metaState; | |
| 254 result = true; | |
| 255 } | |
| 256 } | |
| 257 #if DEBUG_MAPPING | |
| 258 ALOGD("getFallbackKeyCode: keyCode=%d, metaState=0x%08x ~ Result %s, " | |
| 259 "fallback keyCode=%d, fallback metaState=0x%08x.", | |
| 260 keyCode, metaState, result ? "true" : "false", | |
| 261 outFallbackAction->keyCode, outFallbackAction->metaState); | |
| 262 #endif | |
| 263 return result; | |
| 264 } | |
| 265 | |
| 266 char16_t KeyCharacterMap::getMatch(int32_t keyCode, const char16_t* chars, size_t numChars, | |
| 267 int32_t metaState) const { | |
| 268 char16_t result = 0; | |
| 269 const Key* key; | |
| 270 if (getKey(keyCode, &key)) { | |
| 271 // Try to find the most general behavior that maps to this character. | |
| 272 // For example, the base key behavior will usually be last in the list. | |
| 273 // However, if we find a perfect meta state match for one behavior then use that one. | |
| 274 for (const Behavior* behavior = key->firstBehavior; behavior; behavior = behavior->next) { | |
| 275 if (behavior->character) { | |
| 276 for (size_t i = 0; i < numChars; i++) { | |
| 277 if (behavior->character == chars[i]) { | |
| 278 result = behavior->character; | |
| 279 if ((behavior->metaState & metaState) == behavior->metaState) { | |
| 280 goto ExactMatch; | |
| 281 } | |
| 282 break; | |
| 283 } | |
| 284 } | |
| 285 } | |
| 286 } | |
| 287 ExactMatch: ; | |
| 288 } | |
| 289 #if DEBUG_MAPPING | |
| 290 ALOGD("getMatch: keyCode=%d, chars=[%s], metaState=0x%08x ~ Result %d.", | |
| 291 keyCode, toString(chars, numChars).string(), metaState, result); | |
| 292 #endif | |
| 293 return result; | |
| 294 } | |
| 295 | |
| 296 bool KeyCharacterMap::getEvents(int32_t deviceId, const char16_t* chars, size_t numChars, | |
| 297 Vector<KeyEvent>& outEvents) const { | |
| 298 nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); | |
| 299 | |
| 300 for (size_t i = 0; i < numChars; i++) { | |
| 301 int32_t keyCode, metaState; | |
| 302 char16_t ch = chars[i]; | |
| 303 if (!findKey(ch, &keyCode, &metaState)) { | |
| 304 #if DEBUG_MAPPING | |
| 305 ALOGD("getEvents: deviceId=%d, chars=[%s] ~ Failed to find mapping for character %d.", | |
| 306 deviceId, toString(chars, numChars).string(), ch); | |
| 307 #endif | |
| 308 return false; | |
| 309 } | |
| 310 | |
| 311 int32_t currentMetaState = 0; | |
| 312 addMetaKeys(outEvents, deviceId, metaState, true, now, ¤tMetaState); | |
| 313 addKey(outEvents, deviceId, keyCode, currentMetaState, true, now); | |
| 314 addKey(outEvents, deviceId, keyCode, currentMetaState, false, now); | |
| 315 addMetaKeys(outEvents, deviceId, metaState, false, now, ¤tMetaState); | |
| 316 } | |
| 317 #if DEBUG_MAPPING | |
| 318 ALOGD("getEvents: deviceId=%d, chars=[%s] ~ Generated %d events.", | |
| 319 deviceId, toString(chars, numChars).string(), int32_t(outEvents.size())); | |
| 320 for (size_t i = 0; i < outEvents.size(); i++) { | |
| 321 ALOGD(" Key: keyCode=%d, metaState=0x%08x, %s.", | |
| 322 outEvents[i].getKeyCode(), outEvents[i].getMetaState(), | |
| 323 outEvents[i].getAction() == AKEY_EVENT_ACTION_DOWN ? "down" : "up"); | |
| 324 } | |
| 325 #endif | |
| 326 return true; | |
| 327 } | |
| 328 | |
| 329 status_t KeyCharacterMap::mapKey(int32_t scanCode, int32_t usageCode, int32_t* outKeyCode) const { | |
| 330 if (usageCode) { | |
| 331 ssize_t index = mKeysByUsageCode.indexOfKey(usageCode); | |
| 332 if (index >= 0) { | |
| 333 #if DEBUG_MAPPING | |
| 334 ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d.", | |
| 335 scanCode, usageCode, *outKeyCode); | |
| 336 #endif | |
| 337 *outKeyCode = mKeysByUsageCode.valueAt(index); | |
| 338 return OK; | |
| 339 } | |
| 340 } | |
| 341 if (scanCode) { | |
| 342 ssize_t index = mKeysByScanCode.indexOfKey(scanCode); | |
| 343 if (index >= 0) { | |
| 344 #if DEBUG_MAPPING | |
| 345 ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d.", | |
| 346 scanCode, usageCode, *outKeyCode); | |
| 347 #endif | |
| 348 *outKeyCode = mKeysByScanCode.valueAt(index); | |
| 349 return OK; | |
| 350 } | |
| 351 } | |
| 352 | |
| 353 #if DEBUG_MAPPING | |
| 354 ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Failed.", scanCode, usageCode); | |
| 355 #endif | |
| 356 *outKeyCode = AKEYCODE_UNKNOWN; | |
| 357 return NAME_NOT_FOUND; | |
| 358 } | |
| 359 | |
| 360 bool KeyCharacterMap::getKey(int32_t keyCode, const Key** outKey) const { | |
| 361 ssize_t index = mKeys.indexOfKey(keyCode); | |
| 362 if (index >= 0) { | |
| 363 *outKey = mKeys.valueAt(index); | |
| 364 return true; | |
| 365 } | |
| 366 return false; | |
| 367 } | |
| 368 | |
| 369 bool KeyCharacterMap::getKeyBehavior(int32_t keyCode, int32_t metaState, | |
| 370 const Key** outKey, const Behavior** outBehavior) const { | |
| 371 const Key* key; | |
| 372 if (getKey(keyCode, &key)) { | |
| 373 const Behavior* behavior = key->firstBehavior; | |
| 374 while (behavior) { | |
| 375 if (matchesMetaState(metaState, behavior->metaState)) { | |
| 376 *outKey = key; | |
| 377 *outBehavior = behavior; | |
| 378 return true; | |
| 379 } | |
| 380 behavior = behavior->next; | |
| 381 } | |
| 382 } | |
| 383 return false; | |
| 384 } | |
| 385 | |
| 386 bool KeyCharacterMap::matchesMetaState(int32_t eventMetaState, int32_t behaviorMetaState) { | |
| 387 // Behavior must have at least the set of meta states specified. | |
| 388 // And if the key event has CTRL, ALT or META then the behavior must exactly | |
| 389 // match those, taking into account that a behavior can specify that it handles | |
| 390 // one, both or either of a left/right modifier pair. | |
| 391 if ((eventMetaState & behaviorMetaState) == behaviorMetaState) { | |
| 392 const int32_t EXACT_META_STATES = | |
| 393 AMETA_CTRL_ON | AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON | |
| 394 | AMETA_ALT_ON | AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON | |
| 395 | AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON; | |
| 396 int32_t unmatchedMetaState = eventMetaState & ~behaviorMetaState & EXACT_META_STATES; | |
| 397 if (behaviorMetaState & AMETA_CTRL_ON) { | |
| 398 unmatchedMetaState &= ~(AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON); | |
| 399 } else if (behaviorMetaState & (AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) { | |
| 400 unmatchedMetaState &= ~AMETA_CTRL_ON; | |
| 401 } | |
| 402 if (behaviorMetaState & AMETA_ALT_ON) { | |
| 403 unmatchedMetaState &= ~(AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON); | |
| 404 } else if (behaviorMetaState & (AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) { | |
| 405 unmatchedMetaState &= ~AMETA_ALT_ON; | |
| 406 } | |
| 407 if (behaviorMetaState & AMETA_META_ON) { | |
| 408 unmatchedMetaState &= ~(AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON); | |
| 409 } else if (behaviorMetaState & (AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) { | |
| 410 unmatchedMetaState &= ~AMETA_META_ON; | |
| 411 } | |
| 412 return !unmatchedMetaState; | |
| 413 } | |
| 414 return false; | |
| 415 } | |
| 416 | |
| 417 bool KeyCharacterMap::findKey(char16_t ch, int32_t* outKeyCode, int32_t* outMetaState) const { | |
| 418 if (!ch) { | |
| 419 return false; | |
| 420 } | |
| 421 | |
| 422 for (size_t i = 0; i < mKeys.size(); i++) { | |
| 423 const Key* key = mKeys.valueAt(i); | |
| 424 | |
| 425 // Try to find the most general behavior that maps to this character. | |
| 426 // For example, the base key behavior will usually be last in the list. | |
| 427 const Behavior* found = NULL; | |
| 428 for (const Behavior* behavior = key->firstBehavior; behavior; behavior = behavior->next) { | |
| 429 if (behavior->character == ch) { | |
| 430 found = behavior; | |
| 431 } | |
| 432 } | |
| 433 if (found) { | |
| 434 *outKeyCode = mKeys.keyAt(i); | |
| 435 *outMetaState = found->metaState; | |
| 436 return true; | |
| 437 } | |
| 438 } | |
| 439 return false; | |
| 440 } | |
| 441 | |
| 442 void KeyCharacterMap::addKey(Vector<KeyEvent>& outEvents, | |
| 443 int32_t deviceId, int32_t keyCode, int32_t metaState, bool down, nsecs_t time) { | |
| 444 outEvents.push(); | |
| 445 KeyEvent& event = outEvents.editTop(); | |
| 446 event.initialize(deviceId, AINPUT_SOURCE_KEYBOARD, | |
| 447 down ? AKEY_EVENT_ACTION_DOWN : AKEY_EVENT_ACTION_UP, | |
| 448 0, keyCode, 0, metaState, 0, time, time); | |
| 449 } | |
| 450 | |
| 451 void KeyCharacterMap::addMetaKeys(Vector<KeyEvent>& outEvents, | |
| 452 int32_t deviceId, int32_t metaState, bool down, nsecs_t time, | |
| 453 int32_t* currentMetaState) { | |
| 454 // Add and remove meta keys symmetrically. | |
| 455 if (down) { | |
| 456 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 457 AKEYCODE_CAPS_LOCK, AMETA_CAPS_LOCK_ON, currentMetaState); | |
| 458 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 459 AKEYCODE_NUM_LOCK, AMETA_NUM_LOCK_ON, currentMetaState); | |
| 460 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 461 AKEYCODE_SCROLL_LOCK, AMETA_SCROLL_LOCK_ON, currentMetaState); | |
| 462 | |
| 463 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 464 AKEYCODE_SHIFT_LEFT, AMETA_SHIFT_LEFT_ON, | |
| 465 AKEYCODE_SHIFT_RIGHT, AMETA_SHIFT_RIGHT_ON, | |
| 466 AMETA_SHIFT_ON, currentMetaState); | |
| 467 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 468 AKEYCODE_ALT_LEFT, AMETA_ALT_LEFT_ON, | |
| 469 AKEYCODE_ALT_RIGHT, AMETA_ALT_RIGHT_ON, | |
| 470 AMETA_ALT_ON, currentMetaState); | |
| 471 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 472 AKEYCODE_CTRL_LEFT, AMETA_CTRL_LEFT_ON, | |
| 473 AKEYCODE_CTRL_RIGHT, AMETA_CTRL_RIGHT_ON, | |
| 474 AMETA_CTRL_ON, currentMetaState); | |
| 475 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 476 AKEYCODE_META_LEFT, AMETA_META_LEFT_ON, | |
| 477 AKEYCODE_META_RIGHT, AMETA_META_RIGHT_ON, | |
| 478 AMETA_META_ON, currentMetaState); | |
| 479 | |
| 480 addSingleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 481 AKEYCODE_SYM, AMETA_SYM_ON, currentMetaState); | |
| 482 addSingleEphemeralMetaKey(outEvents, deviceId, metaState, true, time, | |
| 483 AKEYCODE_FUNCTION, AMETA_FUNCTION_ON, currentMetaState); | |
| 484 } else { | |
| 485 addSingleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 486 AKEYCODE_FUNCTION, AMETA_FUNCTION_ON, currentMetaState); | |
| 487 addSingleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 488 AKEYCODE_SYM, AMETA_SYM_ON, currentMetaState); | |
| 489 | |
| 490 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 491 AKEYCODE_META_LEFT, AMETA_META_LEFT_ON, | |
| 492 AKEYCODE_META_RIGHT, AMETA_META_RIGHT_ON, | |
| 493 AMETA_META_ON, currentMetaState); | |
| 494 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 495 AKEYCODE_CTRL_LEFT, AMETA_CTRL_LEFT_ON, | |
| 496 AKEYCODE_CTRL_RIGHT, AMETA_CTRL_RIGHT_ON, | |
| 497 AMETA_CTRL_ON, currentMetaState); | |
| 498 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 499 AKEYCODE_ALT_LEFT, AMETA_ALT_LEFT_ON, | |
| 500 AKEYCODE_ALT_RIGHT, AMETA_ALT_RIGHT_ON, | |
| 501 AMETA_ALT_ON, currentMetaState); | |
| 502 addDoubleEphemeralMetaKey(outEvents, deviceId, metaState, false, time, | |
| 503 AKEYCODE_SHIFT_LEFT, AMETA_SHIFT_LEFT_ON, | |
| 504 AKEYCODE_SHIFT_RIGHT, AMETA_SHIFT_RIGHT_ON, | |
| 505 AMETA_SHIFT_ON, currentMetaState); | |
| 506 | |
| 507 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 508 AKEYCODE_SCROLL_LOCK, AMETA_SCROLL_LOCK_ON, currentMetaState); | |
| 509 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 510 AKEYCODE_NUM_LOCK, AMETA_NUM_LOCK_ON, currentMetaState); | |
| 511 addLockedMetaKey(outEvents, deviceId, metaState, time, | |
| 512 AKEYCODE_CAPS_LOCK, AMETA_CAPS_LOCK_ON, currentMetaState); | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 bool KeyCharacterMap::addSingleEphemeralMetaKey(Vector<KeyEvent>& outEvents, | |
| 517 int32_t deviceId, int32_t metaState, bool down, nsecs_t time, | |
| 518 int32_t keyCode, int32_t keyMetaState, | |
| 519 int32_t* currentMetaState) { | |
| 520 if ((metaState & keyMetaState) == keyMetaState) { | |
| 521 *currentMetaState = updateMetaState(keyCode, down, *currentMetaState); | |
| 522 addKey(outEvents, deviceId, keyCode, *currentMetaState, down, time); | |
| 523 return true; | |
| 524 } | |
| 525 return false; | |
| 526 } | |
| 527 | |
| 528 void KeyCharacterMap::addDoubleEphemeralMetaKey(Vector<KeyEvent>& outEvents, | |
| 529 int32_t deviceId, int32_t metaState, bool down, nsecs_t time, | |
| 530 int32_t leftKeyCode, int32_t leftKeyMetaState, | |
| 531 int32_t rightKeyCode, int32_t rightKeyMetaState, | |
| 532 int32_t eitherKeyMetaState, | |
| 533 int32_t* currentMetaState) { | |
| 534 bool specific = false; | |
| 535 specific |= addSingleEphemeralMetaKey(outEvents, deviceId, metaState, down, time, | |
| 536 leftKeyCode, leftKeyMetaState, currentMetaState); | |
| 537 specific |= addSingleEphemeralMetaKey(outEvents, deviceId, metaState, down, time, | |
| 538 rightKeyCode, rightKeyMetaState, currentMetaState); | |
| 539 | |
| 540 if (!specific) { | |
| 541 addSingleEphemeralMetaKey(outEvents, deviceId, metaState, down, time, | |
| 542 leftKeyCode, eitherKeyMetaState, currentMetaState); | |
| 543 } | |
| 544 } | |
| 545 | |
| 546 void KeyCharacterMap::addLockedMetaKey(Vector<KeyEvent>& outEvents, | |
| 547 int32_t deviceId, int32_t metaState, nsecs_t time, | |
| 548 int32_t keyCode, int32_t keyMetaState, | |
| 549 int32_t* currentMetaState) { | |
| 550 if ((metaState & keyMetaState) == keyMetaState) { | |
| 551 *currentMetaState = updateMetaState(keyCode, true, *currentMetaState); | |
| 552 addKey(outEvents, deviceId, keyCode, *currentMetaState, true, time); | |
| 553 *currentMetaState = updateMetaState(keyCode, false, *currentMetaState); | |
| 554 addKey(outEvents, deviceId, keyCode, *currentMetaState, false, time); | |
| 555 } | |
| 556 } | |
| 557 | |
| 558 #if HAVE_ANDROID_OS | |
| 559 sp<KeyCharacterMap> KeyCharacterMap::readFromParcel(Parcel* parcel) { | |
| 560 sp<KeyCharacterMap> map = new KeyCharacterMap(); | |
| 561 map->mType = parcel->readInt32(); | |
| 562 size_t numKeys = parcel->readInt32(); | |
| 563 if (parcel->errorCheck()) { | |
| 564 return NULL; | |
| 565 } | |
| 566 | |
| 567 for (size_t i = 0; i < numKeys; i++) { | |
| 568 int32_t keyCode = parcel->readInt32(); | |
| 569 char16_t label = parcel->readInt32(); | |
| 570 char16_t number = parcel->readInt32(); | |
| 571 if (parcel->errorCheck()) { | |
| 572 return NULL; | |
| 573 } | |
| 574 | |
| 575 Key* key = new Key(); | |
| 576 key->label = label; | |
| 577 key->number = number; | |
| 578 map->mKeys.add(keyCode, key); | |
| 579 | |
| 580 Behavior* lastBehavior = NULL; | |
| 581 while (parcel->readInt32()) { | |
| 582 int32_t metaState = parcel->readInt32(); | |
| 583 char16_t character = parcel->readInt32(); | |
| 584 int32_t fallbackKeyCode = parcel->readInt32(); | |
| 585 if (parcel->errorCheck()) { | |
| 586 return NULL; | |
| 587 } | |
| 588 | |
| 589 Behavior* behavior = new Behavior(); | |
| 590 behavior->metaState = metaState; | |
| 591 behavior->character = character; | |
| 592 behavior->fallbackKeyCode = fallbackKeyCode; | |
| 593 if (lastBehavior) { | |
| 594 lastBehavior->next = behavior; | |
| 595 } else { | |
| 596 key->firstBehavior = behavior; | |
| 597 } | |
| 598 lastBehavior = behavior; | |
| 599 } | |
| 600 | |
| 601 if (parcel->errorCheck()) { | |
| 602 return NULL; | |
| 603 } | |
| 604 } | |
| 605 return map; | |
| 606 } | |
| 607 | |
| 608 void KeyCharacterMap::writeToParcel(Parcel* parcel) const { | |
| 609 parcel->writeInt32(mType); | |
| 610 | |
| 611 size_t numKeys = mKeys.size(); | |
| 612 parcel->writeInt32(numKeys); | |
| 613 for (size_t i = 0; i < numKeys; i++) { | |
| 614 int32_t keyCode = mKeys.keyAt(i); | |
| 615 const Key* key = mKeys.valueAt(i); | |
| 616 parcel->writeInt32(keyCode); | |
| 617 parcel->writeInt32(key->label); | |
| 618 parcel->writeInt32(key->number); | |
| 619 for (const Behavior* behavior = key->firstBehavior; behavior != NULL; | |
| 620 behavior = behavior->next) { | |
| 621 parcel->writeInt32(1); | |
| 622 parcel->writeInt32(behavior->metaState); | |
| 623 parcel->writeInt32(behavior->character); | |
| 624 parcel->writeInt32(behavior->fallbackKeyCode); | |
| 625 } | |
| 626 parcel->writeInt32(0); | |
| 627 } | |
| 628 } | |
| 629 #endif | |
| 630 | |
| 631 | |
| 632 // --- KeyCharacterMap::Key --- | |
| 633 | |
| 634 KeyCharacterMap::Key::Key() : | |
| 635 label(0), number(0), firstBehavior(NULL) { | |
| 636 } | |
| 637 | |
| 638 KeyCharacterMap::Key::Key(const Key& other) : | |
| 639 label(other.label), number(other.number), | |
| 640 firstBehavior(other.firstBehavior ? new Behavior(*other.firstBehavior) : NULL) { | |
| 641 } | |
| 642 | |
| 643 KeyCharacterMap::Key::~Key() { | |
| 644 Behavior* behavior = firstBehavior; | |
| 645 while (behavior) { | |
| 646 Behavior* next = behavior->next; | |
| 647 delete behavior; | |
| 648 behavior = next; | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 | |
| 653 // --- KeyCharacterMap::Behavior --- | |
| 654 | |
| 655 KeyCharacterMap::Behavior::Behavior() : | |
| 656 next(NULL), metaState(0), character(0), fallbackKeyCode(0) { | |
| 657 } | |
| 658 | |
| 659 KeyCharacterMap::Behavior::Behavior(const Behavior& other) : | |
| 660 next(other.next ? new Behavior(*other.next) : NULL), | |
| 661 metaState(other.metaState), character(other.character), | |
| 662 fallbackKeyCode(other.fallbackKeyCode) { | |
| 663 } | |
| 664 | |
| 665 | |
| 666 // --- KeyCharacterMap::Parser --- | |
| 667 | |
| 668 KeyCharacterMap::Parser::Parser(KeyCharacterMap* map, Tokenizer* tokenizer, Format format) : | |
| 669 mMap(map), mTokenizer(tokenizer), mFormat(format), mState(STATE_TOP) { | |
| 670 } | |
| 671 | |
| 672 KeyCharacterMap::Parser::~Parser() { | |
| 673 } | |
| 674 | |
| 675 status_t KeyCharacterMap::Parser::parse() { | |
| 676 while (!mTokenizer->isEof()) { | |
| 677 #if DEBUG_PARSER | |
| 678 ALOGD("Parsing %s: '%s'.", mTokenizer->getLocation().string(), | |
| 679 mTokenizer->peekRemainderOfLine().string()); | |
| 680 #endif | |
| 681 | |
| 682 mTokenizer->skipDelimiters(WHITESPACE); | |
| 683 | |
| 684 if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') { | |
| 685 switch (mState) { | |
| 686 case STATE_TOP: { | |
| 687 String8 keywordToken = mTokenizer->nextToken(WHITESPACE); | |
| 688 if (keywordToken == "type") { | |
| 689 mTokenizer->skipDelimiters(WHITESPACE); | |
| 690 status_t status = parseType(); | |
| 691 if (status) return status; | |
| 692 } else if (keywordToken == "map") { | |
| 693 mTokenizer->skipDelimiters(WHITESPACE); | |
| 694 status_t status = parseMap(); | |
| 695 if (status) return status; | |
| 696 } else if (keywordToken == "key") { | |
| 697 mTokenizer->skipDelimiters(WHITESPACE); | |
| 698 status_t status = parseKey(); | |
| 699 if (status) return status; | |
| 700 } else { | |
| 701 ALOGE("%s: Expected keyword, got '%s'.", mTokenizer->getLocation().string(), | |
| 702 keywordToken.string()); | |
| 703 return BAD_VALUE; | |
| 704 } | |
| 705 break; | |
| 706 } | |
| 707 | |
| 708 case STATE_KEY: { | |
| 709 status_t status = parseKeyProperty(); | |
| 710 if (status) return status; | |
| 711 break; | |
| 712 } | |
| 713 } | |
| 714 | |
| 715 mTokenizer->skipDelimiters(WHITESPACE); | |
| 716 if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') { | |
| 717 ALOGE("%s: Expected end of line or trailing comment, got '%s'.", | |
| 718 mTokenizer->getLocation().string(), | |
| 719 mTokenizer->peekRemainderOfLine().string()); | |
| 720 return BAD_VALUE; | |
| 721 } | |
| 722 } | |
| 723 | |
| 724 mTokenizer->nextLine(); | |
| 725 } | |
| 726 | |
| 727 if (mState != STATE_TOP) { | |
| 728 ALOGE("%s: Unterminated key description at end of file.", | |
| 729 mTokenizer->getLocation().string()); | |
| 730 return BAD_VALUE; | |
| 731 } | |
| 732 | |
| 733 if (mMap->mType == KEYBOARD_TYPE_UNKNOWN) { | |
| 734 ALOGE("%s: Keyboard layout missing required keyboard 'type' declaration.", | |
| 735 mTokenizer->getLocation().string()); | |
| 736 return BAD_VALUE; | |
| 737 } | |
| 738 | |
| 739 if (mFormat == FORMAT_BASE) { | |
| 740 if (mMap->mType == KEYBOARD_TYPE_OVERLAY) { | |
| 741 ALOGE("%s: Base keyboard layout must specify a keyboard 'type' other than 'OVERLAY'.", | |
| 742 mTokenizer->getLocation().string()); | |
| 743 return BAD_VALUE; | |
| 744 } | |
| 745 } else if (mFormat == FORMAT_OVERLAY) { | |
| 746 if (mMap->mType != KEYBOARD_TYPE_OVERLAY) { | |
| 747 ALOGE("%s: Overlay keyboard layout missing required keyboard " | |
| 748 "'type OVERLAY' declaration.", | |
| 749 mTokenizer->getLocation().string()); | |
| 750 return BAD_VALUE; | |
| 751 } | |
| 752 } | |
| 753 | |
| 754 return NO_ERROR; | |
| 755 } | |
| 756 | |
| 757 status_t KeyCharacterMap::Parser::parseType() { | |
| 758 if (mMap->mType != KEYBOARD_TYPE_UNKNOWN) { | |
| 759 ALOGE("%s: Duplicate keyboard 'type' declaration.", | |
| 760 mTokenizer->getLocation().string()); | |
| 761 return BAD_VALUE; | |
| 762 } | |
| 763 | |
| 764 KeyboardType type; | |
| 765 String8 typeToken = mTokenizer->nextToken(WHITESPACE); | |
| 766 if (typeToken == "NUMERIC") { | |
| 767 type = KEYBOARD_TYPE_NUMERIC; | |
| 768 } else if (typeToken == "PREDICTIVE") { | |
| 769 type = KEYBOARD_TYPE_PREDICTIVE; | |
| 770 } else if (typeToken == "ALPHA") { | |
| 771 type = KEYBOARD_TYPE_ALPHA; | |
| 772 } else if (typeToken == "FULL") { | |
| 773 type = KEYBOARD_TYPE_FULL; | |
| 774 } else if (typeToken == "SPECIAL_FUNCTION") { | |
| 775 type = KEYBOARD_TYPE_SPECIAL_FUNCTION; | |
| 776 } else if (typeToken == "OVERLAY") { | |
| 777 type = KEYBOARD_TYPE_OVERLAY; | |
| 778 } else { | |
| 779 ALOGE("%s: Expected keyboard type label, got '%s'.", mTokenizer->getLocation().string(), | |
| 780 typeToken.string()); | |
| 781 return BAD_VALUE; | |
| 782 } | |
| 783 | |
| 784 #if DEBUG_PARSER | |
| 785 ALOGD("Parsed type: type=%d.", type); | |
| 786 #endif | |
| 787 mMap->mType = type; | |
| 788 return NO_ERROR; | |
| 789 } | |
| 790 | |
| 791 status_t KeyCharacterMap::Parser::parseMap() { | |
| 792 String8 keywordToken = mTokenizer->nextToken(WHITESPACE); | |
| 793 if (keywordToken == "key") { | |
| 794 mTokenizer->skipDelimiters(WHITESPACE); | |
| 795 return parseMapKey(); | |
| 796 } | |
| 797 ALOGE("%s: Expected keyword after 'map', got '%s'.", mTokenizer->getLocation().string(), | |
| 798 keywordToken.string()); | |
| 799 return BAD_VALUE; | |
| 800 } | |
| 801 | |
| 802 status_t KeyCharacterMap::Parser::parseMapKey() { | |
| 803 String8 codeToken = mTokenizer->nextToken(WHITESPACE); | |
| 804 bool mapUsage = false; | |
| 805 if (codeToken == "usage") { | |
| 806 mapUsage = true; | |
| 807 mTokenizer->skipDelimiters(WHITESPACE); | |
| 808 codeToken = mTokenizer->nextToken(WHITESPACE); | |
| 809 } | |
| 810 | |
| 811 char* end; | |
| 812 int32_t code = int32_t(strtol(codeToken.string(), &end, 0)); | |
| 813 if (*end) { | |
| 814 ALOGE("%s: Expected key %s number, got '%s'.", mTokenizer->getLocation().string(), | |
| 815 mapUsage ? "usage" : "scan code", codeToken.string()); | |
| 816 return BAD_VALUE; | |
| 817 } | |
| 818 KeyedVector<int32_t, int32_t>& map = | |
| 819 mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode; | |
| 820 if (map.indexOfKey(code) >= 0) { | |
| 821 ALOGE("%s: Duplicate entry for key %s '%s'.", mTokenizer->getLocation().string(), | |
| 822 mapUsage ? "usage" : "scan code", codeToken.string()); | |
| 823 return BAD_VALUE; | |
| 824 } | |
| 825 | |
| 826 mTokenizer->skipDelimiters(WHITESPACE); | |
| 827 String8 keyCodeToken = mTokenizer->nextToken(WHITESPACE); | |
| 828 int32_t keyCode = getKeyCodeByLabel(keyCodeToken.string()); | |
| 829 if (!keyCode) { | |
| 830 ALOGE("%s: Expected key code label, got '%s'.", mTokenizer->getLocation().string(), | |
| 831 keyCodeToken.string()); | |
| 832 return BAD_VALUE; | |
| 833 } | |
| 834 | |
| 835 #if DEBUG_PARSER | |
| 836 ALOGD("Parsed map key %s: code=%d, keyCode=%d.", | |
| 837 mapUsage ? "usage" : "scan code", code, keyCode); | |
| 838 #endif | |
| 839 map.add(code, keyCode); | |
| 840 return NO_ERROR; | |
| 841 } | |
| 842 | |
| 843 status_t KeyCharacterMap::Parser::parseKey() { | |
| 844 String8 keyCodeToken = mTokenizer->nextToken(WHITESPACE); | |
| 845 int32_t keyCode = getKeyCodeByLabel(keyCodeToken.string()); | |
| 846 if (!keyCode) { | |
| 847 ALOGE("%s: Expected key code label, got '%s'.", mTokenizer->getLocation().string(), | |
| 848 keyCodeToken.string()); | |
| 849 return BAD_VALUE; | |
| 850 } | |
| 851 if (mMap->mKeys.indexOfKey(keyCode) >= 0) { | |
| 852 ALOGE("%s: Duplicate entry for key code '%s'.", mTokenizer->getLocation().string(), | |
| 853 keyCodeToken.string()); | |
| 854 return BAD_VALUE; | |
| 855 } | |
| 856 | |
| 857 mTokenizer->skipDelimiters(WHITESPACE); | |
| 858 String8 openBraceToken = mTokenizer->nextToken(WHITESPACE); | |
| 859 if (openBraceToken != "{") { | |
| 860 ALOGE("%s: Expected '{' after key code label, got '%s'.", | |
| 861 mTokenizer->getLocation().string(), openBraceToken.string()); | |
| 862 return BAD_VALUE; | |
| 863 } | |
| 864 | |
| 865 #if DEBUG_PARSER | |
| 866 ALOGD("Parsed beginning of key: keyCode=%d.", keyCode); | |
| 867 #endif | |
| 868 mKeyCode = keyCode; | |
| 869 mMap->mKeys.add(keyCode, new Key()); | |
| 870 mState = STATE_KEY; | |
| 871 return NO_ERROR; | |
| 872 } | |
| 873 | |
| 874 status_t KeyCharacterMap::Parser::parseKeyProperty() { | |
| 875 Key* key = mMap->mKeys.valueFor(mKeyCode); | |
| 876 String8 token = mTokenizer->nextToken(WHITESPACE_OR_PROPERTY_DELIMITER); | |
| 877 if (token == "}") { | |
| 878 mState = STATE_TOP; | |
| 879 return finishKey(key); | |
| 880 } | |
| 881 | |
| 882 Vector<Property> properties; | |
| 883 | |
| 884 // Parse all comma-delimited property names up to the first colon. | |
| 885 for (;;) { | |
| 886 if (token == "label") { | |
| 887 properties.add(Property(PROPERTY_LABEL)); | |
| 888 } else if (token == "number") { | |
| 889 properties.add(Property(PROPERTY_NUMBER)); | |
| 890 } else { | |
| 891 int32_t metaState; | |
| 892 status_t status = parseModifier(token, &metaState); | |
| 893 if (status) { | |
| 894 ALOGE("%s: Expected a property name or modifier, got '%s'.", | |
| 895 mTokenizer->getLocation().string(), token.string()); | |
| 896 return status; | |
| 897 } | |
| 898 properties.add(Property(PROPERTY_META, metaState)); | |
| 899 } | |
| 900 | |
| 901 mTokenizer->skipDelimiters(WHITESPACE); | |
| 902 if (!mTokenizer->isEol()) { | |
| 903 char ch = mTokenizer->nextChar(); | |
| 904 if (ch == ':') { | |
| 905 break; | |
| 906 } else if (ch == ',') { | |
| 907 mTokenizer->skipDelimiters(WHITESPACE); | |
| 908 token = mTokenizer->nextToken(WHITESPACE_OR_PROPERTY_DELIMITER); | |
| 909 continue; | |
| 910 } | |
| 911 } | |
| 912 | |
| 913 ALOGE("%s: Expected ',' or ':' after property name.", | |
| 914 mTokenizer->getLocation().string()); | |
| 915 return BAD_VALUE; | |
| 916 } | |
| 917 | |
| 918 // Parse behavior after the colon. | |
| 919 mTokenizer->skipDelimiters(WHITESPACE); | |
| 920 | |
| 921 Behavior behavior; | |
| 922 bool haveCharacter = false; | |
| 923 bool haveFallback = false; | |
| 924 | |
| 925 do { | |
| 926 char ch = mTokenizer->peekChar(); | |
| 927 if (ch == '\'') { | |
| 928 char16_t character; | |
| 929 status_t status = parseCharacterLiteral(&character); | |
| 930 if (status || !character) { | |
| 931 ALOGE("%s: Invalid character literal for key.", | |
| 932 mTokenizer->getLocation().string()); | |
| 933 return BAD_VALUE; | |
| 934 } | |
| 935 if (haveCharacter) { | |
| 936 ALOGE("%s: Cannot combine multiple character literals or 'none'.", | |
| 937 mTokenizer->getLocation().string()); | |
| 938 return BAD_VALUE; | |
| 939 } | |
| 940 behavior.character = character; | |
| 941 haveCharacter = true; | |
| 942 } else { | |
| 943 token = mTokenizer->nextToken(WHITESPACE); | |
| 944 if (token == "none") { | |
| 945 if (haveCharacter) { | |
| 946 ALOGE("%s: Cannot combine multiple character literals or 'none'.", | |
| 947 mTokenizer->getLocation().string()); | |
| 948 return BAD_VALUE; | |
| 949 } | |
| 950 haveCharacter = true; | |
| 951 } else if (token == "fallback") { | |
| 952 mTokenizer->skipDelimiters(WHITESPACE); | |
| 953 token = mTokenizer->nextToken(WHITESPACE); | |
| 954 int32_t keyCode = getKeyCodeByLabel(token.string()); | |
| 955 if (!keyCode) { | |
| 956 ALOGE("%s: Invalid key code label for fallback behavior, got '%s'.", | |
| 957 mTokenizer->getLocation().string(), | |
| 958 token.string()); | |
| 959 return BAD_VALUE; | |
| 960 } | |
| 961 if (haveFallback) { | |
| 962 ALOGE("%s: Cannot combine multiple fallback key codes.", | |
| 963 mTokenizer->getLocation().string()); | |
| 964 return BAD_VALUE; | |
| 965 } | |
| 966 behavior.fallbackKeyCode = keyCode; | |
| 967 haveFallback = true; | |
| 968 } else { | |
| 969 ALOGE("%s: Expected a key behavior after ':'.", | |
| 970 mTokenizer->getLocation().string()); | |
| 971 return BAD_VALUE; | |
| 972 } | |
| 973 } | |
| 974 | |
| 975 mTokenizer->skipDelimiters(WHITESPACE); | |
| 976 } while (!mTokenizer->isEol() && mTokenizer->peekChar() != '#'); | |
| 977 | |
| 978 // Add the behavior. | |
| 979 for (size_t i = 0; i < properties.size(); i++) { | |
| 980 const Property& property = properties.itemAt(i); | |
| 981 switch (property.property) { | |
| 982 case PROPERTY_LABEL: | |
| 983 if (key->label) { | |
| 984 ALOGE("%s: Duplicate label for key.", | |
| 985 mTokenizer->getLocation().string()); | |
| 986 return BAD_VALUE; | |
| 987 } | |
| 988 key->label = behavior.character; | |
| 989 #if DEBUG_PARSER | |
| 990 ALOGD("Parsed key label: keyCode=%d, label=%d.", mKeyCode, key->label); | |
| 991 #endif | |
| 992 break; | |
| 993 case PROPERTY_NUMBER: | |
| 994 if (key->number) { | |
| 995 ALOGE("%s: Duplicate number for key.", | |
| 996 mTokenizer->getLocation().string()); | |
| 997 return BAD_VALUE; | |
| 998 } | |
| 999 key->number = behavior.character; | |
| 1000 #if DEBUG_PARSER | |
| 1001 ALOGD("Parsed key number: keyCode=%d, number=%d.", mKeyCode, key->number); | |
| 1002 #endif | |
| 1003 break; | |
| 1004 case PROPERTY_META: { | |
| 1005 for (Behavior* b = key->firstBehavior; b; b = b->next) { | |
| 1006 if (b->metaState == property.metaState) { | |
| 1007 ALOGE("%s: Duplicate key behavior for modifier.", | |
| 1008 mTokenizer->getLocation().string()); | |
| 1009 return BAD_VALUE; | |
| 1010 } | |
| 1011 } | |
| 1012 Behavior* newBehavior = new Behavior(behavior); | |
| 1013 newBehavior->metaState = property.metaState; | |
| 1014 newBehavior->next = key->firstBehavior; | |
| 1015 key->firstBehavior = newBehavior; | |
| 1016 #if DEBUG_PARSER | |
| 1017 ALOGD("Parsed key meta: keyCode=%d, meta=0x%x, char=%d, fallback=%d.", mKeyCode, | |
| 1018 newBehavior->metaState, newBehavior->character, newBehavior->fallbackKeyCode); | |
| 1019 #endif | |
| 1020 break; | |
| 1021 } | |
| 1022 } | |
| 1023 } | |
| 1024 return NO_ERROR; | |
| 1025 } | |
| 1026 | |
| 1027 status_t KeyCharacterMap::Parser::finishKey(Key* key) { | |
| 1028 // Fill in default number property. | |
| 1029 if (!key->number) { | |
| 1030 char16_t digit = 0; | |
| 1031 char16_t symbol = 0; | |
| 1032 for (Behavior* b = key->firstBehavior; b; b = b->next) { | |
| 1033 char16_t ch = b->character; | |
| 1034 if (ch) { | |
| 1035 if (ch >= '0' && ch <= '9') { | |
| 1036 digit = ch; | |
| 1037 } else if (ch == '(' || ch == ')' || ch == '#' || ch == '*' | |
| 1038 || ch == '-' || ch == '+' || ch == ',' || ch == '.' | |
| 1039 || ch == '\'' || ch == ':' || ch == ';' || ch == '/') { | |
| 1040 symbol = ch; | |
| 1041 } | |
| 1042 } | |
| 1043 } | |
| 1044 key->number = digit ? digit : symbol; | |
| 1045 } | |
| 1046 return NO_ERROR; | |
| 1047 } | |
| 1048 | |
| 1049 status_t KeyCharacterMap::Parser::parseModifier(const String8& token, int32_t* outMetaState) { | |
| 1050 if (token == "base") { | |
| 1051 *outMetaState = 0; | |
| 1052 return NO_ERROR; | |
| 1053 } | |
| 1054 | |
| 1055 int32_t combinedMeta = 0; | |
| 1056 | |
| 1057 const char* str = token.string(); | |
| 1058 const char* start = str; | |
| 1059 for (const char* cur = str; ; cur++) { | |
| 1060 char ch = *cur; | |
| 1061 if (ch == '+' || ch == '\0') { | |
| 1062 size_t len = cur - start; | |
| 1063 int32_t metaState = 0; | |
| 1064 for (size_t i = 0; i < sizeof(modifiers) / sizeof(Modifier); i++) { | |
| 1065 if (strlen(modifiers[i].label) == len | |
| 1066 && strncmp(modifiers[i].label, start, len) == 0) { | |
| 1067 metaState = modifiers[i].metaState; | |
| 1068 break; | |
| 1069 } | |
| 1070 } | |
| 1071 if (!metaState) { | |
| 1072 return BAD_VALUE; | |
| 1073 } | |
| 1074 if (combinedMeta & metaState) { | |
| 1075 ALOGE("%s: Duplicate modifier combination '%s'.", | |
| 1076 mTokenizer->getLocation().string(), token.string()); | |
| 1077 return BAD_VALUE; | |
| 1078 } | |
| 1079 | |
| 1080 combinedMeta |= metaState; | |
| 1081 start = cur + 1; | |
| 1082 | |
| 1083 if (ch == '\0') { | |
| 1084 break; | |
| 1085 } | |
| 1086 } | |
| 1087 } | |
| 1088 *outMetaState = combinedMeta; | |
| 1089 return NO_ERROR; | |
| 1090 } | |
| 1091 | |
| 1092 status_t KeyCharacterMap::Parser::parseCharacterLiteral(char16_t* outCharacter) { | |
| 1093 char ch = mTokenizer->nextChar(); | |
| 1094 if (ch != '\'') { | |
| 1095 goto Error; | |
| 1096 } | |
| 1097 | |
| 1098 ch = mTokenizer->nextChar(); | |
| 1099 if (ch == '\\') { | |
| 1100 // Escape sequence. | |
| 1101 ch = mTokenizer->nextChar(); | |
| 1102 if (ch == 'n') { | |
| 1103 *outCharacter = '\n'; | |
| 1104 } else if (ch == 't') { | |
| 1105 *outCharacter = '\t'; | |
| 1106 } else if (ch == '\\') { | |
| 1107 *outCharacter = '\\'; | |
| 1108 } else if (ch == '\'') { | |
| 1109 *outCharacter = '\''; | |
| 1110 } else if (ch == '"') { | |
| 1111 *outCharacter = '"'; | |
| 1112 } else if (ch == 'u') { | |
| 1113 *outCharacter = 0; | |
| 1114 for (int i = 0; i < 4; i++) { | |
| 1115 ch = mTokenizer->nextChar(); | |
| 1116 int digit; | |
| 1117 if (ch >= '0' && ch <= '9') { | |
| 1118 digit = ch - '0'; | |
| 1119 } else if (ch >= 'A' && ch <= 'F') { | |
| 1120 digit = ch - 'A' + 10; | |
| 1121 } else if (ch >= 'a' && ch <= 'f') { | |
| 1122 digit = ch - 'a' + 10; | |
| 1123 } else { | |
| 1124 goto Error; | |
| 1125 } | |
| 1126 *outCharacter = (*outCharacter << 4) | digit; | |
| 1127 } | |
| 1128 } else { | |
| 1129 goto Error; | |
| 1130 } | |
| 1131 } else if (ch >= 32 && ch <= 126 && ch != '\'') { | |
| 1132 // ASCII literal character. | |
| 1133 *outCharacter = ch; | |
| 1134 } else { | |
| 1135 goto Error; | |
| 1136 } | |
| 1137 | |
| 1138 ch = mTokenizer->nextChar(); | |
| 1139 if (ch != '\'') { | |
| 1140 goto Error; | |
| 1141 } | |
| 1142 | |
| 1143 // Ensure that we consumed the entire token. | |
| 1144 if (mTokenizer->nextToken(WHITESPACE).isEmpty()) { | |
| 1145 return NO_ERROR; | |
| 1146 } | |
| 1147 | |
| 1148 Error: | |
| 1149 ALOGE("%s: Malformed character literal.", mTokenizer->getLocation().string()); | |
| 1150 return BAD_VALUE; | |
| 1151 } | |
| 1152 | |
| 1153 } // namespace android |
