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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace MediaWiki\Extension\Translate\MessageGroupProcessing; |
| 5 | |
| 6 | use AggregateMessageGroup; |
| 7 | use AggregateMessageGroupLoader; |
| 8 | use CachedMessageGroupLoader; |
| 9 | use DependencyWrapper; |
| 10 | use InvalidArgumentException; |
| 11 | use MediaWiki\Extension\Translate\MessageLoading\MessageHandle; |
| 12 | use MediaWiki\Extension\Translate\MessageProcessing\StringMatcher; |
| 13 | use MediaWiki\Extension\Translate\Services; |
| 14 | use MediaWiki\Extension\Translate\Utilities\Utilities; |
| 15 | use MediaWiki\MediaWikiServices; |
| 16 | use MediaWiki\Title\Title; |
| 17 | use MessageGroup; |
| 18 | use MessageGroupBase; |
| 19 | use MessageGroupLoader; |
| 20 | use RuntimeException; |
| 21 | use WANObjectCache; |
| 22 | |
| 23 | /** |
| 24 | * Factory class for accessing message groups individually by id or |
| 25 | * all of them as a list. |
| 26 | * @todo Clean up the mixed static/member method interface. |
| 27 | * |
| 28 | * @author Niklas Laxström |
| 29 | * @author Siebrand Mazeland |
| 30 | * @copyright Copyright © 2008-2013, Niklas Laxström, Siebrand Mazeland |
| 31 | * @license GPL-2.0-or-later |
| 32 | */ |
| 33 | class MessageGroups { |
| 34 | /** @var MessageGroup[]|null Map of (group ID => MessageGroup) */ |
| 35 | private $groups; |
| 36 | /** @var MessageGroupLoader[]|null */ |
| 37 | private $groupLoaders; |
| 38 | /** @var WANObjectCache|null */ |
| 39 | private $cache; |
| 40 | |
| 41 | /** |
| 42 | * Tracks the current cache version. Update this when there are incompatible changes |
| 43 | * with the last version of the cache to force a new key to be used. The older cache |
| 44 | * will automatically expire and be cleared off. |
| 45 | * @var int |
| 46 | */ |
| 47 | private const CACHE_VERSION = 4; |
| 48 | |
| 49 | /** Initialises the list of groups */ |
| 50 | protected function init(): void { |
| 51 | if ( is_array( $this->groups ) ) { |
| 52 | return; // groups already initialized |
| 53 | } |
| 54 | |
| 55 | $value = $this->getCachedGroupDefinitions(); |
| 56 | $groups = $value['cc']; |
| 57 | |
| 58 | foreach ( $this->getGroupLoaders() as $loader ) { |
| 59 | $groups += $loader->getGroups(); |
| 60 | } |
| 61 | $this->initGroupsFromDefinitions( $groups ); |
| 62 | } |
| 63 | |
| 64 | /** @param string|false $recache Either "recache" or false */ |
| 65 | protected function getCachedGroupDefinitions( $recache = false ): array { |
| 66 | global $wgAutoloadClasses; |
| 67 | |
| 68 | $regenerator = function () { |
| 69 | global $wgAutoloadClasses; |
| 70 | |
| 71 | $groups = $deps = $autoload = []; |
| 72 | // This constructs the list of all groups from multiple different sources. |
| 73 | // When possible, a cache dependency is created to automatically recreate |
| 74 | // the cache when configuration changes. Currently used by other extensions |
| 75 | // such as Banner Messages and test cases to load message groups. |
| 76 | Services::getInstance()->getHookRunner() |
| 77 | ->onTranslatePostInitGroups( $groups, $deps, $autoload ); |
| 78 | // Register autoloaders for this request, both values modified by reference |
| 79 | self::appendAutoloader( $autoload, $wgAutoloadClasses ); |
| 80 | |
| 81 | $value = [ |
| 82 | 'ts' => wfTimestamp( TS_MW ), |
| 83 | 'cc' => $groups, |
| 84 | 'autoload' => $autoload |
| 85 | ]; |
| 86 | $wrapper = new DependencyWrapper( $value, $deps ); |
| 87 | $wrapper->initialiseDeps(); |
| 88 | |
| 89 | return $wrapper; // save the new value to cache |
| 90 | }; |
| 91 | |
| 92 | $cache = $this->getCache(); |
| 93 | /** @var DependencyWrapper $wrapper */ |
| 94 | $wrapper = $cache->getWithSetCallback( |
| 95 | $this->getCacheKey(), |
| 96 | $cache::TTL_DAY, |
| 97 | $regenerator, |
| 98 | [ |
| 99 | 'lockTSE' => 30, // avoid stampedes (mutex) |
| 100 | 'checkKeys' => [ $this->getCacheKey() ], |
| 101 | 'touchedCallback' => static function ( $value ) { |
| 102 | return ( $value instanceof DependencyWrapper && $value->isExpired() ) |
| 103 | ? time() // treat value as if it just expired (for "lockTSE") |
| 104 | : null; |
| 105 | }, |
| 106 | 'minAsOf' => $recache ? INF : $cache::MIN_TIMESTAMP_NONE, // "miss" on recache |
| 107 | ] |
| 108 | ); |
| 109 | |
| 110 | $value = $wrapper->getValue(); |
| 111 | self::appendAutoloader( $value['autoload'], $wgAutoloadClasses ); |
| 112 | |
| 113 | return $value; |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Expand process cached groups to objects |
| 118 | * |
| 119 | * @param array $groups Map of (group ID => mixed) |
| 120 | */ |
| 121 | protected function initGroupsFromDefinitions( array $groups ): void { |
| 122 | foreach ( $groups as $id => $mixed ) { |
| 123 | if ( !is_object( $mixed ) ) { |
| 124 | $groups[$id] = call_user_func( $mixed, $id ); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | $this->groups = $groups; |
| 129 | } |
| 130 | |
| 131 | /** Immediately update the cache. */ |
| 132 | public function recache(): void { |
| 133 | // Purge the value from all datacenters |
| 134 | $cache = $this->getCache(); |
| 135 | $cache->touchCheckKey( $this->getCacheKey() ); |
| 136 | |
| 137 | $this->clearProcessCache(); |
| 138 | |
| 139 | foreach ( $this->getCacheGroupLoaders() as $cacheLoader ) { |
| 140 | $cacheLoader->recache(); |
| 141 | } |
| 142 | |
| 143 | // Reload the cache value and update the local datacenter |
| 144 | $value = $this->getCachedGroupDefinitions( 'recache' ); |
| 145 | $groups = $value['cc']; |
| 146 | |
| 147 | foreach ( $this->getGroupLoaders() as $loader ) { |
| 148 | $groups += $loader->getGroups(); |
| 149 | } |
| 150 | |
| 151 | $this->initGroupsFromDefinitions( $groups ); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Manually reset group cache. |
| 156 | * |
| 157 | * Use when automatic dependency tracking fails. |
| 158 | */ |
| 159 | public static function clearCache(): void { |
| 160 | $self = self::singleton(); |
| 161 | |
| 162 | $cache = $self->getCache(); |
| 163 | $cache->delete( $self->getCacheKey(), 1 ); |
| 164 | |
| 165 | foreach ( $self->getCacheGroupLoaders() as $cacheLoader ) { |
| 166 | $cacheLoader->clearCache(); |
| 167 | } |
| 168 | |
| 169 | $self->clearProcessCache(); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Manually reset the process cache. |
| 174 | * |
| 175 | * This is helpful for long running scripts where the process cache might get stale |
| 176 | * even though the global cache is updated. |
| 177 | */ |
| 178 | public function clearProcessCache(): void { |
| 179 | $this->groups = null; |
| 180 | $this->groupLoaders = null; |
| 181 | } |
| 182 | |
| 183 | protected function getCache(): WANObjectCache { |
| 184 | return $this->cache ?? MediaWikiServices::getInstance()->getMainWANObjectCache(); |
| 185 | } |
| 186 | |
| 187 | /** Override cache, for example during tests. */ |
| 188 | public function setCache( WANObjectCache $cache ) { |
| 189 | $this->cache = $cache; |
| 190 | } |
| 191 | |
| 192 | /** Returns the cache key. */ |
| 193 | public function getCacheKey(): string { |
| 194 | return $this->getCache()->makeKey( 'translate-groups', 'v' . self::CACHE_VERSION ); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Safely merges first array to second array, throwing warning on duplicates and removing |
| 199 | * duplicates from the first array. |
| 200 | * @param array $additions Things to append |
| 201 | * @param array &$to Where to append |
| 202 | */ |
| 203 | protected static function appendAutoloader( array $additions, array &$to ): void { |
| 204 | foreach ( $additions as $class => $file ) { |
| 205 | if ( isset( $to[$class] ) && $to[$class] !== $file ) { |
| 206 | $msg = "Autoload conflict for $class: $to[$class] !== $file"; |
| 207 | trigger_error( $msg, E_USER_WARNING ); |
| 208 | continue; |
| 209 | } |
| 210 | |
| 211 | $to[$class] = $file; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Loads and returns group loaders. Group loaders must implement MessageGroupLoader |
| 217 | * and may additionally implement CachedMessageGroupLoader |
| 218 | * @return MessageGroupLoader[] |
| 219 | */ |
| 220 | protected function getGroupLoaders(): array { |
| 221 | if ( $this->groupLoaders !== null ) { |
| 222 | return $this->groupLoaders; |
| 223 | } |
| 224 | |
| 225 | $cache = $this->getCache(); |
| 226 | |
| 227 | $groupLoaderInstances = $this->groupLoaders = []; |
| 228 | |
| 229 | // Initialize the dependencies |
| 230 | $deps = [ |
| 231 | 'database' => Utilities::getSafeReadDB(), |
| 232 | 'cache' => $cache |
| 233 | ]; |
| 234 | |
| 235 | Services::getInstance()->getHookRunner() |
| 236 | ->onTranslateInitGroupLoaders( $groupLoaderInstances, $deps ); |
| 237 | |
| 238 | foreach ( $groupLoaderInstances as $loader ) { |
| 239 | if ( !$loader instanceof MessageGroupLoader ) { |
| 240 | throw new InvalidArgumentException( |
| 241 | "MessageGroupLoader - $loader must implement the " . |
| 242 | 'MessageGroupLoader interface.' |
| 243 | ); |
| 244 | } |
| 245 | |
| 246 | $this->groupLoaders[] = $loader; |
| 247 | } |
| 248 | |
| 249 | return $this->groupLoaders; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Returns group loaders that implement the CachedMessageGroupLoader |
| 254 | * |
| 255 | * @return CachedMessageGroupLoader[] |
| 256 | */ |
| 257 | protected function getCacheGroupLoaders(): array { |
| 258 | // @phan-suppress-next-line PhanTypeMismatchReturn |
| 259 | return array_filter( |
| 260 | $this->getGroupLoaders(), |
| 261 | static fn ( $groupLoader ) => $groupLoader instanceof CachedMessageGroupLoader |
| 262 | ); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Fetch a message group by id. |
| 267 | * |
| 268 | * @param string $id Message group id. |
| 269 | * @return MessageGroup|null if it doesn't exist. |
| 270 | */ |
| 271 | public static function getGroup( string $id ): ?MessageGroup { |
| 272 | $groups = self::singleton()->getGroups(); |
| 273 | $id = self::normalizeId( $id ); |
| 274 | |
| 275 | if ( isset( $groups[$id] ) ) { |
| 276 | return $groups[$id]; |
| 277 | } |
| 278 | |
| 279 | if ( $id !== '' && $id[0] === '!' ) { |
| 280 | $dynamic = self::getDynamicGroups(); |
| 281 | if ( isset( $dynamic[$id] ) ) { |
| 282 | return new $dynamic[$id]; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | return null; |
| 287 | } |
| 288 | |
| 289 | /** Fixes the id and resolves aliases. */ |
| 290 | public static function normalizeId( ?string $id ): string { |
| 291 | /* Translatable pages use spaces, but MW occasionally likes to |
| 292 | * normalize spaces to underscores */ |
| 293 | $id = (string)$id; |
| 294 | |
| 295 | if ( str_starts_with( $id, 'page-' ) ) { |
| 296 | $id = strtr( $id, '_', ' ' ); |
| 297 | } |
| 298 | |
| 299 | global $wgTranslateGroupAliases; |
| 300 | if ( isset( $wgTranslateGroupAliases[$id] ) ) { |
| 301 | $id = $wgTranslateGroupAliases[$id]; |
| 302 | } |
| 303 | |
| 304 | return $id; |
| 305 | } |
| 306 | |
| 307 | public static function exists( string $id ): bool { |
| 308 | return (bool)self::getGroup( $id ); |
| 309 | } |
| 310 | |
| 311 | /** Check if a particular aggregate group label exists */ |
| 312 | public static function labelExists( string $name ): bool { |
| 313 | $loader = AggregateMessageGroupLoader::getInstance(); |
| 314 | $labels = array_map( static function ( MessageGroupBase $g ) { |
| 315 | return $g->getLabel(); |
| 316 | }, $loader->loadAggregateGroups() ); |
| 317 | return in_array( $name, $labels, true ); |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * Get all enabled message groups. |
| 322 | * @return MessageGroup[] Map of (string => MessageGroup) |
| 323 | */ |
| 324 | public static function getAllGroups(): array { |
| 325 | return self::singleton()->getGroups(); |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * We want to de-emphasize time sensitive groups like news for 2009. |
| 330 | * They can still exist in the system, but should not appear in front |
| 331 | * of translators looking to do some useful work. |
| 332 | * |
| 333 | * @param MessageGroup|string $group Message group ID |
| 334 | * @return string Message group priority |
| 335 | */ |
| 336 | public static function getPriority( $group ): string { |
| 337 | if ( $group instanceof MessageGroup ) { |
| 338 | $id = $group->getId(); |
| 339 | } else { |
| 340 | $id = self::normalizeId( $group ); |
| 341 | } |
| 342 | |
| 343 | return Services::getInstance()->getMessageGroupReviewStore()->getGroupPriority( $id ) ?? ''; |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * Sets the message group priority. |
| 348 | * |
| 349 | * @param MessageGroup|string $group Message group |
| 350 | * @param string $priority Priority (empty string to unset) |
| 351 | */ |
| 352 | public static function setPriority( $group, string $priority = '' ): void { |
| 353 | if ( $group instanceof MessageGroup ) { |
| 354 | $id = $group->getId(); |
| 355 | } else { |
| 356 | $id = self::normalizeId( $group ); |
| 357 | } |
| 358 | |
| 359 | $priority = $priority === '' ? null : $priority; |
| 360 | Services::getInstance()->getMessageGroupReviewStore()->setGroupPriority( $id, $priority ); |
| 361 | } |
| 362 | |
| 363 | public static function isDynamic( MessageGroup $group ): bool { |
| 364 | $id = $group->getId(); |
| 365 | |
| 366 | return ( $id[0] ?? null ) === '!'; |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Returns a list of message groups that share (certain) messages |
| 371 | * with this group. |
| 372 | */ |
| 373 | public static function getSharedGroups( MessageGroup $group ): array { |
| 374 | // Take the first message, get a handle for it and check |
| 375 | // if that message belongs to other groups. Those are the |
| 376 | // parent aggregate groups. Ideally we loop over all keys, |
| 377 | // but this should be enough. |
| 378 | $keys = array_keys( $group->getDefinitions() ); |
| 379 | $title = Title::makeTitle( $group->getNamespace(), $keys[0] ); |
| 380 | $handle = new MessageHandle( $title ); |
| 381 | $ids = $handle->getGroupIds(); |
| 382 | foreach ( $ids as $index => $id ) { |
| 383 | if ( $id === $group->getId() ) { |
| 384 | unset( $ids[$index] ); |
| 385 | break; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | return $ids; |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * Returns a list of parent message groups. If message group exists |
| 394 | * in multiple places in the tree, multiple lists are returned. |
| 395 | */ |
| 396 | public static function getParentGroups( MessageGroup $targetGroup ): array { |
| 397 | $ids = self::getSharedGroups( $targetGroup ); |
| 398 | if ( $ids === [] ) { |
| 399 | return []; |
| 400 | } |
| 401 | |
| 402 | $targetId = $targetGroup->getId(); |
| 403 | |
| 404 | /* Get the group structure. We will be using this to find which |
| 405 | * of our candidates are top-level groups. Prefilter it to only |
| 406 | * contain aggregate groups. */ |
| 407 | $structure = self::getGroupStructure(); |
| 408 | foreach ( $structure as $index => $group ) { |
| 409 | if ( $group instanceof MessageGroup ) { |
| 410 | unset( $structure[$index] ); |
| 411 | } else { |
| 412 | $structure[$index] = array_shift( $group ); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /* Now that we have all related groups, use them to find all paths |
| 417 | * from top-level groups to target group with any number of subgroups |
| 418 | * in between. */ |
| 419 | $paths = []; |
| 420 | |
| 421 | /* This function recursively finds paths to the target group */ |
| 422 | $pathFinder = static function ( &$paths, $group, $targetId, $prefix = '' ) |
| 423 | use ( &$pathFinder ) { |
| 424 | if ( $group instanceof AggregateMessageGroup ) { |
| 425 | foreach ( $group->getGroups() as $subgroup ) { |
| 426 | $subId = $subgroup->getId(); |
| 427 | if ( $subId === $targetId ) { |
| 428 | $paths[] = $prefix; |
| 429 | continue; |
| 430 | } |
| 431 | |
| 432 | $pathFinder( $paths, $subgroup, $targetId, "$prefix|$subId" ); |
| 433 | } |
| 434 | } |
| 435 | }; |
| 436 | |
| 437 | // Iterate over the top-level groups only |
| 438 | foreach ( $ids as $id ) { |
| 439 | // First, find a top level groups |
| 440 | $group = self::getGroup( $id ); |
| 441 | |
| 442 | // Quick escape for leaf groups |
| 443 | if ( !$group instanceof AggregateMessageGroup ) { |
| 444 | continue; |
| 445 | } |
| 446 | |
| 447 | foreach ( $structure as $rootGroup ) { |
| 448 | /** @var MessageGroup $rootGroup */ |
| 449 | if ( $rootGroup->getId() === $group->getId() ) { |
| 450 | // Yay we found a top-level group |
| 451 | $pathFinder( $paths, $rootGroup, $targetId, $id ); |
| 452 | break; // No we have one or more paths appended into $paths |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | // And finally explode the strings |
| 458 | return array_map( static function ( string $pathString ): array { |
| 459 | return explode( '|', $pathString ); |
| 460 | }, $paths ); |
| 461 | } |
| 462 | |
| 463 | public static function singleton(): self { |
| 464 | static $instance; |
| 465 | if ( !$instance instanceof self ) { |
| 466 | $instance = new self(); |
| 467 | } |
| 468 | |
| 469 | return $instance; |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Get all enabled non-dynamic message groups. |
| 474 | * |
| 475 | * @return MessageGroup[] Map of (group ID => MessageGroup) |
| 476 | */ |
| 477 | public function getGroups(): array { |
| 478 | $this->init(); |
| 479 | |
| 480 | return $this->groups; |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Get message groups for corresponding message group ids. |
| 485 | * |
| 486 | * @param string[] $ids Group IDs |
| 487 | * @param bool $skipMeta Skip aggregate message groups |
| 488 | * @return MessageGroup[] |
| 489 | * @since 2012-02-13 |
| 490 | */ |
| 491 | public static function getGroupsById( array $ids, bool $skipMeta = false ): array { |
| 492 | $groups = []; |
| 493 | foreach ( $ids as $id ) { |
| 494 | $group = self::getGroup( $id ); |
| 495 | |
| 496 | if ( $group !== null ) { |
| 497 | if ( $skipMeta && $group->isMeta() ) { |
| 498 | continue; |
| 499 | } else { |
| 500 | $groups[$id] = $group; |
| 501 | } |
| 502 | } else { |
| 503 | wfDebug( __METHOD__ . ": Invalid message group id: $id\n" ); |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | return $groups; |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * If the list of message group ids contains wildcards, this function will match |
| 512 | * them against the list of all supported message groups and return matched |
| 513 | * message group ids. |
| 514 | * @param string[]|string $ids |
| 515 | * @return string[] |
| 516 | */ |
| 517 | public static function expandWildcards( $ids ): array { |
| 518 | $all = []; |
| 519 | |
| 520 | $ids = (array)$ids; |
| 521 | foreach ( $ids as $index => $id ) { |
| 522 | // Fast path, no wildcards |
| 523 | if ( strcspn( $id, '*?' ) === strlen( $id ) ) { |
| 524 | $g = self::getGroup( $id ); |
| 525 | if ( $g ) { |
| 526 | $all[] = $g->getId(); |
| 527 | } |
| 528 | unset( $ids[$index] ); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | if ( $ids === [] ) { |
| 533 | return $all; |
| 534 | } |
| 535 | |
| 536 | // Slow path for the ones with wildcards |
| 537 | $matcher = new StringMatcher( '', $ids ); |
| 538 | foreach ( self::getAllGroups() as $id => $_ ) { |
| 539 | if ( $matcher->matches( $id ) ) { |
| 540 | $all[] = $id; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | return $all; |
| 545 | } |
| 546 | |
| 547 | /** Contents on these groups changes on a whim. */ |
| 548 | public static function getDynamicGroups(): array { |
| 549 | return [ |
| 550 | '!recent' => 'RecentMessageGroup', |
| 551 | '!additions' => 'RecentAdditionsMessageGroup', |
| 552 | '!sandbox' => 'SandboxMessageGroup', |
| 553 | ]; |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * Get only groups of specific type (class). |
| 558 | * @phan-template T |
| 559 | * @param string $type Class name of wanted type |
| 560 | * @phan-param class-string<T> $type |
| 561 | * @return MessageGroup[] Map of (group ID => MessageGroupBase) |
| 562 | * @phan-return array<T&MessageGroup> |
| 563 | * @since 2012-04-30 |
| 564 | */ |
| 565 | public static function getGroupsByType( string $type ): array { |
| 566 | $groups = self::getAllGroups(); |
| 567 | foreach ( $groups as $id => $group ) { |
| 568 | if ( !$group instanceof $type ) { |
| 569 | unset( $groups[$id] ); |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | // @phan-suppress-next-line PhanTypeMismatchReturn |
| 574 | return $groups; |
| 575 | } |
| 576 | |
| 577 | /** |
| 578 | * Returns a tree of message groups. First group in each subgroup is |
| 579 | * the aggregate group. Groups can be nested infinitely, though in practice |
| 580 | * other code might not handle more than two (or even one) nesting levels. |
| 581 | * One group can exist multiple times in different parts of the tree. |
| 582 | * In other words: [Group1, Group2, [AggGroup, Group3, Group4]] |
| 583 | * |
| 584 | * @return array Map of (group ID => MessageGroup or recursive array) |
| 585 | */ |
| 586 | public static function getGroupStructure(): array { |
| 587 | $groups = self::getAllGroups(); |
| 588 | |
| 589 | // Determine the top level groups of the tree |
| 590 | $tree = $groups; |
| 591 | foreach ( $groups as $id => $o ) { |
| 592 | if ( !$o->exists() ) { |
| 593 | unset( $groups[$id], $tree[$id] ); |
| 594 | continue; |
| 595 | } |
| 596 | |
| 597 | if ( $o instanceof AggregateMessageGroup ) { |
| 598 | foreach ( $o->getGroups() as $sid => $so ) { |
| 599 | unset( $tree[$sid] ); |
| 600 | } |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | usort( $tree, [ self::class, 'groupLabelSort' ] ); |
| 605 | |
| 606 | /* Now we have two things left in $tree array: |
| 607 | * - solitaries: top-level non-aggregate message groups |
| 608 | * - top-level aggregate message groups */ |
| 609 | foreach ( $tree as $index => $group ) { |
| 610 | if ( $group instanceof AggregateMessageGroup ) { |
| 611 | $tree[$index] = self::subGroups( $group ); |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | /* Essentially we are done now. Cyclic groups can cause part of the |
| 616 | * groups not be included at all, because they have all unset each |
| 617 | * other in the first loop. So now we check if there are groups left |
| 618 | * over. */ |
| 619 | $used = []; |
| 620 | array_walk_recursive( |
| 621 | $tree, |
| 622 | static function ( MessageGroup $group ) use ( &$used ) { |
| 623 | $used[$group->getId()] = true; |
| 624 | } |
| 625 | ); |
| 626 | $unused = array_diff_key( $groups, $used ); |
| 627 | if ( $unused ) { |
| 628 | foreach ( $unused as $index => $group ) { |
| 629 | if ( !$group instanceof AggregateMessageGroup ) { |
| 630 | unset( $unused[$index] ); |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | // Only list the aggregate groups, other groups cannot cause cycles |
| 635 | $participants = implode( ', ', array_keys( $unused ) ); |
| 636 | throw new RuntimeException( "Found cyclic aggregate message groups: $participants" ); |
| 637 | } |
| 638 | |
| 639 | return $tree; |
| 640 | } |
| 641 | |
| 642 | /** Sorts groups by label value */ |
| 643 | public static function groupLabelSort( MessageGroup $a, MessageGroup $b ): int { |
| 644 | $al = $a->getLabel(); |
| 645 | $bl = $b->getLabel(); |
| 646 | |
| 647 | return strcasecmp( $al, $bl ); |
| 648 | } |
| 649 | |
| 650 | /** |
| 651 | * Like getGroupStructure but start from one root which must be an |
| 652 | * AggregateMessageGroup. |
| 653 | * |
| 654 | * @param AggregateMessageGroup $parent |
| 655 | * @param string[] &$childIds Flat list of child group IDs [returned] |
| 656 | * @param string $fname Calling method name; used to identify recursion [optional] |
| 657 | * @return array |
| 658 | */ |
| 659 | public static function subGroups( |
| 660 | AggregateMessageGroup $parent, |
| 661 | array &$childIds = [], |
| 662 | string $fname = 'caller' |
| 663 | ): array { |
| 664 | static $recursionGuard = []; |
| 665 | |
| 666 | $pid = $parent->getId(); |
| 667 | if ( isset( $recursionGuard[$pid] ) ) { |
| 668 | $tid = $pid; |
| 669 | $path = [ $tid ]; |
| 670 | do { |
| 671 | $tid = $recursionGuard[$tid]; |
| 672 | $path[] = $tid; |
| 673 | // Until we have gone full cycle |
| 674 | } while ( $tid !== $pid ); |
| 675 | $path = implode( ' > ', $path ); |
| 676 | throw new RuntimeException( "Found cyclic aggregate message groups: $path" ); |
| 677 | } |
| 678 | |
| 679 | // We don't care about the ids. |
| 680 | $tree = array_values( $parent->getGroups() ); |
| 681 | usort( $tree, [ self::class, 'groupLabelSort' ] ); |
| 682 | // Expand aggregate groups (if any left) after sorting to form a tree |
| 683 | foreach ( $tree as $index => $group ) { |
| 684 | if ( $group instanceof AggregateMessageGroup ) { |
| 685 | $sid = $group->getId(); |
| 686 | $recursionGuard[$pid] = $sid; |
| 687 | $tree[$index] = self::subGroups( $group, $childIds, __METHOD__ ); |
| 688 | unset( $recursionGuard[$pid] ); |
| 689 | |
| 690 | $childIds[$sid] = 1; |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | // Parent group must be first item in the array |
| 695 | array_unshift( $tree, $parent ); |
| 696 | |
| 697 | if ( $fname !== __METHOD__ ) { |
| 698 | // Move the IDs from the keys to the value for final return |
| 699 | $childIds = array_values( $childIds ); |
| 700 | } |
| 701 | |
| 702 | return $tree; |
| 703 | } |
| 704 | |
| 705 | /** |
| 706 | * Checks whether all the message groups have the same source language. |
| 707 | * @param array $groups A list of message groups objects. |
| 708 | * @return string Language code if the languages are the same, empty string otherwise. |
| 709 | */ |
| 710 | public static function haveSingleSourceLanguage( array $groups ): string { |
| 711 | $seen = ''; |
| 712 | |
| 713 | foreach ( $groups as $group ) { |
| 714 | $language = $group->getSourceLanguage(); |
| 715 | if ( $seen === '' ) { |
| 716 | $seen = $language; |
| 717 | } elseif ( $language !== $seen ) { |
| 718 | return ''; |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | return $seen; |
| 723 | } |
| 724 | |
| 725 | /** |
| 726 | * Filters out messages that should not be translated under normal |
| 727 | * conditions. |
| 728 | * |
| 729 | * @param MessageHandle $handle Handle for the translation target. |
| 730 | * @param string $targetLanguage |
| 731 | * @return bool |
| 732 | */ |
| 733 | public static function isTranslatableMessage( MessageHandle $handle, string $targetLanguage ): bool { |
| 734 | static $cache = []; |
| 735 | |
| 736 | if ( !$handle->isValid() ) { |
| 737 | return false; |
| 738 | } |
| 739 | |
| 740 | $group = $handle->getGroup(); |
| 741 | $groupId = $group->getId(); |
| 742 | $cacheKey = "$groupId:$targetLanguage"; |
| 743 | |
| 744 | if ( !isset( $cache[$cacheKey] ) ) { |
| 745 | $supportedLanguages = Utilities::getLanguageNames( 'en' ); |
| 746 | $inclusionList = $group->getTranslatableLanguages() ?? $supportedLanguages; |
| 747 | |
| 748 | $included = isset( $inclusionList[$targetLanguage] ); |
| 749 | $excluded = Services::getInstance()->getMessageGroupMetadata()->isExcluded( $groupId, $targetLanguage ); |
| 750 | |
| 751 | $cache[$cacheKey] = [ |
| 752 | 'relevant' => $included && !$excluded, |
| 753 | 'tags' => [], |
| 754 | ]; |
| 755 | |
| 756 | $groupTags = $group->getTags(); |
| 757 | foreach ( [ 'ignored', 'optional' ] as $tag ) { |
| 758 | if ( isset( $groupTags[$tag] ) ) { |
| 759 | foreach ( $groupTags[$tag] as $key ) { |
| 760 | // TODO: ucfirst should not be here |
| 761 | $cache[$cacheKey]['tags'][ucfirst( $key )] = true; |
| 762 | } |
| 763 | } |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | return $cache[$cacheKey]['relevant'] && |
| 768 | !isset( $cache[$cacheKey]['tags'][ucfirst( $handle->getKey() )] ); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | class_alias( MessageGroups::class, 'MessageGroups' ); |