maintenance/language/languages.inc

   1 <?php
   2 /**
   3  * Handle messages in the language files.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup MaintenanceLanguage
  22  */
  23
  24 /**
  25  * @ingroup MaintenanceLanguage
  26  */
  27 class Languages {
  28         /** @var array List of languages */
  29         protected $mLanguages;
  30
  31         /** @var array Raw list of the messages in each language */
  32         protected $mRawMessages;
  33
  34         /** @var array Messages in each language (except for English), divided to groups */
  35         protected $mMessages;
  36
  37         /** @var array Fallback language in each language */
  38         protected $mFallback;
  39
  40         /** @var array General messages in English, divided to groups */
  41         protected $mGeneralMessages;
  42
  43         /** @var array All the messages which should be exist only in the English file */
  44         protected $mIgnoredMessages;
  45
  46         /** @var array All the messages which may be translated or not, depending on the language */
  47         protected $mOptionalMessages;
  48
  49         /** @var array Namespace names */
  50         protected $mNamespaceNames;
  51
  52         /** @var array Namespace aliases */
  53         protected $mNamespaceAliases;
  54
  55         /** @var array Magic words */
  56         protected $mMagicWords;
  57
  58         /** @var array Special page aliases */
  59         protected $mSpecialPageAliases;
  60
  61         /**
  62          * Load the list of languages: all the Messages*.php
  63          * files in the languages directory.
  64          */
  65         function __construct() {
  66                 Hooks::run( 'LocalisationIgnoredOptionalMessages',
  67                         [ &$this->mIgnoredMessages, &$this->mOptionalMessages ] );
  68
  69                 $this->mLanguages = array_keys( Language::fetchLanguageNames( null, 'mwfile' ) );
  70                 sort( $this->mLanguages );
  71         }
  72
  73         /**
  74          * Get the language list.
  75          *
  76          * @return array The language list.
  77          */
  78         public function getLanguages() {
  79                 return $this->mLanguages;
  80         }
  81
  82         /**
  83          * Get the ignored messages list.
  84          *
  85          * @return array The ignored messages list.
  86          */
  87         public function getIgnoredMessages() {
  88                 return $this->mIgnoredMessages;
  89         }
  90
  91         /**
  92          * Get the optional messages list.
  93          *
  94          * @return array The  optional messages list.
  95          */
  96         public function getOptionalMessages() {
  97                 return $this->mOptionalMessages;
  98         }
  99
 100         /**
 101          * Load the language file.
 102          *
 103          * @param string $code The language code.
 104          */
 105         protected function loadFile( $code ) {
 106                 if ( isset( $this->mRawMessages[$code] ) &&
 107                         isset( $this->mFallback[$code] ) &&
 108                         isset( $this->mNamespaceNames[$code] ) &&
 109                         isset( $this->mNamespaceAliases[$code] ) &&
 110                         isset( $this->mMagicWords[$code] ) &&
 111                         isset( $this->mSpecialPageAliases[$code] )
 112                 ) {
 113                         return;
 114                 }
 115                 $this->mRawMessages[$code] = [];
 116                 $this->mFallback[$code] = '';
 117                 $this->mNamespaceNames[$code] = [];
 118                 $this->mNamespaceAliases[$code] = [];
 119                 $this->mMagicWords[$code] = [];
 120                 $this->mSpecialPageAliases[$code] = [];
 121
 122                 $jsonfilename = Language::getJsonMessagesFileName( $code );
 123                 if ( file_exists( $jsonfilename ) ) {
 124                         $json = Language::getLocalisationCache()->readJSONFile( $jsonfilename );
 125                         $this->mRawMessages[$code] = $json['messages'];
 126                 }
 127
 128                 $filename = Language::getMessagesFileName( $code );
 129                 if ( file_exists( $filename ) ) {
 130                         require $filename;
 131                         if ( isset( $fallback ) ) {
 132                                 $this->mFallback[$code] = $fallback;
 133                         }
 134                         if ( isset( $namespaceNames ) ) {
 135                                 $this->mNamespaceNames[$code] = $namespaceNames;
 136                         }
 137                         if ( isset( $namespaceAliases ) ) {
 138                                 $this->mNamespaceAliases[$code] = $namespaceAliases;
 139                         }
 140                         if ( isset( $magicWords ) ) {
 141                                 $this->mMagicWords[$code] = $magicWords;
 142                         }
 143                         if ( isset( $specialPageAliases ) ) {
 144                                 $this->mSpecialPageAliases[$code] = $specialPageAliases;
 145                         }
 146                 }
 147         }
 148
 149         /**
 150          * Load the messages for a specific language (which is not English) and divide them to
 151          * groups:
 152          * all - all the messages.
 153          * required - messages which should be translated in order to get a complete translation.
 154          * optional - messages which can be translated, the fallback translation is used if not
 155          *   translated.
 156          * obsolete - messages which should not be translated, either because they do not exist,
 157          *   or they are ignored messages.
 158          * translated - messages which are either required or optional, but translated from
 159          *   English and needed.
 160          *
 161          * @param string $code The language code.
 162          */
 163         private function loadMessages( $code ) {
 164                 if ( isset( $this->mMessages[$code] ) ) {
 165                         return;
 166                 }
 167                 $this->loadFile( $code );
 168                 $this->loadGeneralMessages();
 169                 $this->mMessages[$code]['all'] = $this->mRawMessages[$code];
 170                 $this->mMessages[$code]['required'] = [];
 171                 $this->mMessages[$code]['optional'] = [];
 172                 $this->mMessages[$code]['obsolete'] = [];
 173                 $this->mMessages[$code]['translated'] = [];
 174                 foreach ( $this->mMessages[$code]['all'] as $key => $value ) {
 175                         if ( isset( $this->mGeneralMessages['required'][$key] ) ) {
 176                                 $this->mMessages[$code]['required'][$key] = $value;
 177                                 $this->mMessages[$code]['translated'][$key] = $value;
 178                         } elseif ( isset( $this->mGeneralMessages['optional'][$key] ) ) {
 179                                 $this->mMessages[$code]['optional'][$key] = $value;
 180                                 $this->mMessages[$code]['translated'][$key] = $value;
 181                         } else {
 182                                 $this->mMessages[$code]['obsolete'][$key] = $value;
 183                         }
 184                 }
 185         }
 186
 187         /**
 188          * Load the messages for English and divide them to groups:
 189          * all - all the messages.
 190          * required - messages which should be translated to other languages in order to get a
 191          *   complete translation.
 192          * optional - messages which can be translated to other languages, but it's not required
 193          *   for a complete translation.
 194          * ignored - messages which should not be translated to other languages.
 195          * translatable - messages which are either required or optional, but can be translated
 196          *   from English.
 197          */
 198         private function loadGeneralMessages() {
 199                 if ( isset( $this->mGeneralMessages ) ) {
 200                         return;
 201                 }
 202                 $this->loadFile( 'en' );
 203                 $this->mGeneralMessages['all'] = $this->mRawMessages['en'];
 204                 $this->mGeneralMessages['required'] = [];
 205                 $this->mGeneralMessages['optional'] = [];
 206                 $this->mGeneralMessages['ignored'] = [];
 207                 $this->mGeneralMessages['translatable'] = [];
 208                 foreach ( $this->mGeneralMessages['all'] as $key => $value ) {
 209                         if ( in_array( $key, $this->mIgnoredMessages ) ) {
 210                                 $this->mGeneralMessages['ignored'][$key] = $value;
 211                         } elseif ( in_array( $key, $this->mOptionalMessages ) ) {
 212                                 $this->mGeneralMessages['optional'][$key] = $value;
 213                                 $this->mGeneralMessages['translatable'][$key] = $value;
 214                         } else {
 215                                 $this->mGeneralMessages['required'][$key] = $value;
 216                                 $this->mGeneralMessages['translatable'][$key] = $value;
 217                         }
 218                 }
 219         }
 220
 221         /**
 222          * Get all the messages for a specific language (not English), without the
 223          * fallback language messages, divided to groups:
 224          * all - all the messages.
 225          * required - messages which should be translated in order to get a complete translation.
 226          * optional - messages which can be translated, the fallback translation is used if not
 227          *   translated.
 228          * obsolete - messages which should not be translated, either because they do not exist,
 229          *   or they are ignored messages.
 230          * translated - messages which are either required or optional, but translated from
 231          *   English and needed.
 232          *
 233          * @param string $code The language code.
 234          *
 235          * @return string The messages in this language.
 236          */
 237         public function getMessages( $code ) {
 238                 $this->loadMessages( $code );
 239
 240                 return $this->mMessages[$code];
 241         }
 242
 243         /**
 244          * Get all the general English messages, divided to groups:
 245          * all - all the messages.
 246          * required - messages which should be translated to other languages in
 247          *   order to get a complete translation.
 248          * optional - messages which can be translated to other languages, but it's
 249          *   not required for a complete translation.
 250          * ignored - messages which should not be translated to other languages.
 251          * translatable - messages which are either required or optional, but can be
 252          *   translated from English.
 253          *
 254          * @return array The general English messages.
 255          */
 256         public function getGeneralMessages() {
 257                 $this->loadGeneralMessages();
 258
 259                 return $this->mGeneralMessages;
 260         }
 261
 262         /**
 263          * Get fallback language code for a specific language.
 264          *
 265          * @param string $code The language code.
 266          *
 267          * @return string Fallback code.
 268          */
 269         public function getFallback( $code ) {
 270                 $this->loadFile( $code );
 271
 272                 return $this->mFallback[$code];
 273         }
 274
 275         /**
 276          * Get namespace names for a specific language.
 277          *
 278          * @param string $code The language code.
 279          *
 280          * @return array Namespace names.
 281          */
 282         public function getNamespaceNames( $code ) {
 283                 $this->loadFile( $code );
 284
 285                 return $this->mNamespaceNames[$code];
 286         }
 287
 288         /**
 289          * Get namespace aliases for a specific language.
 290          *
 291          * @param string $code The language code.
 292          *
 293          * @return array Namespace aliases.
 294          */
 295         public function getNamespaceAliases( $code ) {
 296                 $this->loadFile( $code );
 297
 298                 return $this->mNamespaceAliases[$code];
 299         }
 300
 301         /**
 302          * Get magic words for a specific language.
 303          *
 304          * @param string $code The language code.
 305          *
 306          * @return array Magic words.
 307          */
 308         public function getMagicWords( $code ) {
 309                 $this->loadFile( $code );
 310
 311                 return $this->mMagicWords[$code];
 312         }
 313
 314         /**
 315          * Get special page aliases for a specific language.
 316          *
 317          * @param string $code The language code.
 318          *
 319          * @return array Special page aliases.
 320          */
 321         public function getSpecialPageAliases( $code ) {
 322                 $this->loadFile( $code );
 323
 324                 return $this->mSpecialPageAliases[$code];
 325         }
 326
 327         /**
 328          * Get the untranslated messages for a specific language.
 329          *
 330          * @param string $code The language code.
 331          *
 332          * @return array The untranslated messages for this language.
 333          */
 334         public function getUntranslatedMessages( $code ) {
 335                 $this->loadGeneralMessages();
 336                 $this->loadMessages( $code );
 337
 338                 return array_diff_key( $this->mGeneralMessages['required'], $this->mMessages[$code]['required'] );
 339         }
 340
 341         /**
 342          * Get the duplicate messages for a specific language.
 343          *
 344          * @param string $code The language code.
 345          *
 346          * @return array The duplicate messages for this language.
 347          */
 348         public function getDuplicateMessages( $code ) {
 349                 $this->loadGeneralMessages();
 350                 $this->loadMessages( $code );
 351                 $duplicateMessages = [];
 352                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 353                         if ( $this->mGeneralMessages['translatable'][$key] == $value ) {
 354                                 $duplicateMessages[$key] = $value;
 355                         }
 356                 }
 357
 358                 return $duplicateMessages;
 359         }
 360
 361         /**
 362          * Get the obsolete messages for a specific language.
 363          *
 364          * @param string $code The language code.
 365          *
 366          * @return array The obsolete messages for this language.
 367          */
 368         public function getObsoleteMessages( $code ) {
 369                 $this->loadGeneralMessages();
 370                 $this->loadMessages( $code );
 371
 372                 return $this->mMessages[$code]['obsolete'];
 373         }
 374
 375         /**
 376          * Get the messages whose variables do not match the original ones.
 377          *
 378          * @param string $code The language code.
 379          *
 380          * @return array The messages whose variables do not match the original ones.
 381          */
 382         public function getMessagesWithMismatchVariables( $code ) {
 383                 $this->loadGeneralMessages();
 384                 $this->loadMessages( $code );
 385                 $variables = [ '\$1', '\$2', '\$3', '\$4', '\$5', '\$6', '\$7', '\$8', '\$9' ];
 386                 $mismatchMessages = [];
 387                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 388                         $missing = false;
 389                         foreach ( $variables as $var ) {
 390                                 if ( preg_match( "/$var/sU", $this->mGeneralMessages['translatable'][$key] ) &&
 391                                         !preg_match( "/$var/sU", $value )
 392                                 ) {
 393                                         $missing = true;
 394                                 }
 395                                 if ( !preg_match( "/$var/sU", $this->mGeneralMessages['translatable'][$key] ) &&
 396                                         preg_match( "/$var/sU", $value )
 397                                 ) {
 398                                         $missing = true;
 399                                 }
 400                         }
 401                         if ( $missing ) {
 402                                 $mismatchMessages[$key] = $value;
 403                         }
 404                 }
 405
 406                 return $mismatchMessages;
 407         }
 408
 409         /**
 410          * Get the messages which do not use plural.
 411          *
 412          * @param string $code The language code.
 413          *
 414          * @return array The messages which do not use plural in this language.
 415          */
 416         public function getMessagesWithoutPlural( $code ) {
 417                 $this->loadGeneralMessages();
 418                 $this->loadMessages( $code );
 419                 $messagesWithoutPlural = [];
 420                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 421                         if ( stripos( $this->mGeneralMessages['translatable'][$key], '{{plural:' ) !== false &&
 422                                 stripos( $value, '{{plural:' ) === false
 423                         ) {
 424                                 $messagesWithoutPlural[$key] = $value;
 425                         }
 426                 }
 427
 428                 return $messagesWithoutPlural;
 429         }
 430
 431         /**
 432          * Get the empty messages.
 433          *
 434          * @param string $code The language code.
 435          *
 436          * @return array The empty messages for this language.
 437          */
 438         public function getEmptyMessages( $code ) {
 439                 $this->loadGeneralMessages();
 440                 $this->loadMessages( $code );
 441                 $emptyMessages = [];
 442                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 443                         if ( $value === '' || $value === '-' ) {
 444                                 $emptyMessages[$key] = $value;
 445                         }
 446                 }
 447
 448                 return $emptyMessages;
 449         }
 450
 451         /**
 452          * Get the messages with trailing whitespace.
 453          *
 454          * @param string $code The language code.
 455          *
 456          * @return array The messages with trailing whitespace in this language.
 457          */
 458         public function getMessagesWithWhitespace( $code ) {
 459                 $this->loadGeneralMessages();
 460                 $this->loadMessages( $code );
 461                 $messagesWithWhitespace = [];
 462                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 463                         if ( $this->mGeneralMessages['translatable'][$key] !== '' && $value !== rtrim( $value ) ) {
 464                                 $messagesWithWhitespace[$key] = $value;
 465                         }
 466                 }
 467
 468                 return $messagesWithWhitespace;
 469         }
 470
 471         /**
 472          * Get the non-XHTML messages.
 473          *
 474          * @param string $code The language code.
 475          *
 476          * @return array The non-XHTML messages for this language.
 477          */
 478         public function getNonXHTMLMessages( $code ) {
 479                 $this->loadGeneralMessages();
 480                 $this->loadMessages( $code );
 481                 $wrongPhrases = [
 482                         '<hr *\\?>',
 483                         '<br *\\?>',
 484                         '<hr/>',
 485                         '<br/>',
 486                         '<hr>',
 487                         '<br>',
 488                 ];
 489                 $wrongPhrases = '~(' . implode( '|', $wrongPhrases ) . ')~sDu';
 490                 $nonXHTMLMessages = [];
 491                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 492                         if ( preg_match( $wrongPhrases, $value ) ) {
 493                                 $nonXHTMLMessages[$key] = $value;
 494                         }
 495                 }
 496
 497                 return $nonXHTMLMessages;
 498         }
 499
 500         /**
 501          * Get the messages which include wrong characters.
 502          *
 503          * @param string $code The language code.
 504          *
 505          * @return array The messages which include wrong characters in this language.
 506          */
 507         public function getMessagesWithWrongChars( $code ) {
 508                 $this->loadGeneralMessages();
 509                 $this->loadMessages( $code );
 510                 $wrongChars = [
 511                         '[LRM]' => "\xE2\x80\x8E",
 512                         '[RLM]' => "\xE2\x80\x8F",
 513                         '[LRE]' => "\xE2\x80\xAA",
 514                         '[RLE]' => "\xE2\x80\xAB",
 515                         '[POP]' => "\xE2\x80\xAC",
 516                         '[LRO]' => "\xE2\x80\xAD",
 517                         '[RLO]' => "\xE2\x80\xAB",
 518                         '[ZWSP]' => "\xE2\x80\x8B",
 519                         '[NBSP]' => "\xC2\xA0",
 520                         '[WJ]' => "\xE2\x81\xA0",
 521                         '[BOM]' => "\xEF\xBB\xBF",
 522                         '[FFFD]' => "\xEF\xBF\xBD",
 523                 ];
 524                 $wrongRegExp = '/(' . implode( '|', array_values( $wrongChars ) ) . ')/sDu';
 525                 $wrongCharsMessages = [];
 526                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 527                         if ( preg_match( $wrongRegExp, $value ) ) {
 528                                 foreach ( $wrongChars as $viewableChar => $hiddenChar ) {
 529                                         $value = str_replace( $hiddenChar, $viewableChar, $value );
 530                                 }
 531                                 $wrongCharsMessages[$key] = $value;
 532                         }
 533                 }
 534
 535                 return $wrongCharsMessages;
 536         }
 537
 538         /**
 539          * Get the messages which include dubious links.
 540          *
 541          * @param string $code The language code.
 542          *
 543          * @return array The messages which include dubious links in this language.
 544          */
 545         public function getMessagesWithDubiousLinks( $code ) {
 546                 $this->loadGeneralMessages();
 547                 $this->loadMessages( $code );
 548                 $tc = Title::legalChars() . '#%{}';
 549                 $messages = [];
 550                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 551                         $matches = [];
 552                         preg_match_all( "/\[\[([{$tc}]+)(?:\\|(.+?))?]]/sDu", $value, $matches );
 553                         $numMatches = count( $matches[0] );
 554                         for ( $i = 0; $i < $numMatches; $i++ ) {
 555                                 if ( preg_match( "/.*project.*/isDu", $matches[1][$i] ) ) {
 556                                         $messages[$key][] = $matches[0][$i];
 557                                 }
 558                         }
 559
 560                         if ( isset( $messages[$key] ) ) {
 561                                 $messages[$key] = implode( $messages[$key], ", " );
 562                         }
 563                 }
 564
 565                 return $messages;
 566         }
 567
 568         /**
 569          * Get the messages which include unbalanced brackets.
 570          *
 571          * @param string $code The language code.
 572          *
 573          * @return array The messages which include unbalanced brackets in this language.
 574          */
 575         public function getMessagesWithUnbalanced( $code ) {
 576                 $this->loadGeneralMessages();
 577                 $this->loadMessages( $code );
 578                 $messages = [];
 579                 foreach ( $this->mMessages[$code]['translated'] as $key => $value ) {
 580                         $a = $b = $c = $d = 0;
 581                         foreach ( preg_split( '//', $value ) as $char ) {
 582                                 switch ( $char ) {
 583                                         case '[':
 584                                                 $a++;
 585                                                 break;
 586                                         case ']':
 587                                                 $b++;
 588                                                 break;
 589                                         case '{':
 590                                                 $c++;
 591                                                 break;
 592                                         case '}':
 593                                                 $d++;
 594                                                 break;
 595                                 }
 596                         }
 597
 598                         if ( $a !== $b || $c !== $d ) {
 599                                 $messages[$key] = "$a, $b, $c, $d";
 600                         }
 601                 }
 602
 603                 return $messages;
 604         }
 605
 606         /**
 607          * Get the untranslated namespace names.
 608          *
 609          * @param string $code The language code.
 610          *
 611          * @return array The untranslated namespace names in this language.
 612          */
 613         public function getUntranslatedNamespaces( $code ) {
 614                 $this->loadFile( 'en' );
 615                 $this->loadFile( $code );
 616                 $namespacesDiff = array_diff_key( $this->mNamespaceNames['en'], $this->mNamespaceNames[$code] );
 617                 if ( isset( $namespacesDiff[NS_MAIN] ) ) {
 618                         unset( $namespacesDiff[NS_MAIN] );
 619                 }
 620
 621                 return $namespacesDiff;
 622         }
 623
 624         /**
 625          * Get the project talk namespace names with no $1.
 626          *
 627          * @param string $code The language code.
 628          *
 629          * @return array The problematic project talk namespaces in this language.
 630          */
 631         public function getProblematicProjectTalks( $code ) {
 632                 $this->loadFile( $code );
 633                 $namespaces = [];
 634
 635                 # Check default namespace name
 636                 if ( isset( $this->mNamespaceNames[$code][NS_PROJECT_TALK] ) ) {
 637                         $default = $this->mNamespaceNames[$code][NS_PROJECT_TALK];
 638                         if ( strpos( $default, '$1' ) === false ) {
 639                                 $namespaces[$default] = 'default';
 640                         }
 641                 }
 642
 643                 # Check namespace aliases
 644                 foreach ( $this->mNamespaceAliases[$code] as $key => $value ) {
 645                         if ( $value == NS_PROJECT_TALK && strpos( $key, '$1' ) === false ) {
 646                                 $namespaces[$key] = '';
 647                         }
 648                 }
 649
 650                 return $namespaces;
 651         }
 652
 653         /**
 654          * Get the untranslated magic words.
 655          *
 656          * @param string $code The language code.
 657          *
 658          * @return array The untranslated magic words in this language.
 659          */
 660         public function getUntranslatedMagicWords( $code ) {
 661                 $this->loadFile( 'en' );
 662                 $this->loadFile( $code );
 663                 $magicWords = [];
 664                 foreach ( $this->mMagicWords['en'] as $key => $value ) {
 665                         if ( !isset( $this->mMagicWords[$code][$key] ) ) {
 666                                 $magicWords[$key] = $value[1];
 667                         }
 668                 }
 669
 670                 return $magicWords;
 671         }
 672
 673         /**
 674          * Get the obsolete magic words.
 675          *
 676          * @param string $code The language code.
 677          *
 678          * @return array The obsolete magic words in this language.
 679          */
 680         public function getObsoleteMagicWords( $code ) {
 681                 $this->loadFile( 'en' );
 682                 $this->loadFile( $code );
 683                 $magicWords = [];
 684                 foreach ( $this->mMagicWords[$code] as $key => $value ) {
 685                         if ( !isset( $this->mMagicWords['en'][$key] ) ) {
 686                                 $magicWords[$key] = $value[1];
 687                         }
 688                 }
 689
 690                 return $magicWords;
 691         }
 692
 693         /**
 694          * Get the magic words that override the original English magic word.
 695          *
 696          * @param string $code The language code.
 697          *
 698          * @return array The overriding magic words in this language.
 699          */
 700         public function getOverridingMagicWords( $code ) {
 701                 $this->loadFile( 'en' );
 702                 $this->loadFile( $code );
 703                 $magicWords = [];
 704                 foreach ( $this->mMagicWords[$code] as $key => $local ) {
 705                         if ( !isset( $this->mMagicWords['en'][$key] ) ) {
 706                                 # Unrecognized magic word
 707                                 continue;
 708                         }
 709                         $en = $this->mMagicWords['en'][$key];
 710                         array_shift( $local );
 711                         array_shift( $en );
 712                         foreach ( $en as $word ) {
 713                                 if ( !in_array( $word, $local ) ) {
 714                                         $magicWords[$key] = $word;
 715                                         break;
 716                                 }
 717                         }
 718                 }
 719
 720                 return $magicWords;
 721         }
 722
 723         /**
 724          * Get the magic words which do not match the case-sensitivity of the original words.
 725          *
 726          * @param string $code The language code.
 727          *
 728          * @return array The magic words whose case does not match in this language.
 729          */
 730         public function getCaseMismatchMagicWords( $code ) {
 731                 $this->loadFile( 'en' );
 732                 $this->loadFile( $code );
 733                 $magicWords = [];
 734                 foreach ( $this->mMagicWords[$code] as $key => $local ) {
 735                         if ( !isset( $this->mMagicWords['en'][$key] ) ) {
 736                                 # Unrecognized magic word
 737                                 continue;
 738                         }
 739                         if ( $local[0] != $this->mMagicWords['en'][$key][0] ) {
 740                                 $magicWords[$key] = $local[0];
 741                         }
 742                 }
 743
 744                 return $magicWords;
 745         }
 746
 747         /**
 748          * Get the untranslated special page names.
 749          *
 750          * @param string $code The language code.
 751          *
 752          * @return array The untranslated special page names in this language.
 753          */
 754         public function getUntraslatedSpecialPages( $code ) {
 755                 $this->loadFile( 'en' );
 756                 $this->loadFile( $code );
 757                 $specialPageAliases = [];
 758                 foreach ( $this->mSpecialPageAliases['en'] as $key => $value ) {
 759                         if ( !isset( $this->mSpecialPageAliases[$code][$key] ) ) {
 760                                 $specialPageAliases[$key] = $value[0];
 761                         }
 762                 }
 763
 764                 return $specialPageAliases;
 765         }
 766
 767         /**
 768          * Get the obsolete special page names.
 769          *
 770          * @param string $code The language code.
 771          *
 772          * @return array The obsolete special page names in this language.
 773          */
 774         public function getObsoleteSpecialPages( $code ) {
 775                 $this->loadFile( 'en' );
 776                 $this->loadFile( $code );
 777                 $specialPageAliases = [];
 778                 foreach ( $this->mSpecialPageAliases[$code] as $key => $value ) {
 779                         if ( !isset( $this->mSpecialPageAliases['en'][$key] ) ) {
 780                                 $specialPageAliases[$key] = $value[0];
 781                         }
 782                 }
 783
 784                 return $specialPageAliases;
 785         }
 786 }
 787
 788 class ExtensionLanguages extends Languages {
 789         /**
 790          * @var MessageGroup
 791          */
 792         private $mMessageGroup;
 793
 794         /**
 795          * Load the messages group.
 796          * @param MessageGroup $group The messages group.
 797          */
 798         function __construct( MessageGroup $group ) {
 799                 $this->mMessageGroup = $group;
 800
 801                 $this->mIgnoredMessages = $this->mMessageGroup->getIgnored();
 802                 $this->mOptionalMessages = $this->mMessageGroup->getOptional();
 803         }
 804
 805         /**
 806          * Get the extension name.
 807          *
 808          * @return string The extension name.
 809          */
 810         public function name() {
 811                 return $this->mMessageGroup->getLabel();
 812         }
 813
 814         /**
 815          * Load the language file.
 816          *
 817          * @param string $code The language code.
 818          */
 819         protected function loadFile( $code ) {
 820                 if ( !isset( $this->mRawMessages[$code] ) ) {
 821                         $this->mRawMessages[$code] = $this->mMessageGroup->load( $code );
 822                         if ( empty( $this->mRawMessages[$code] ) ) {
 823                                 $this->mRawMessages[$code] = [];
 824                         }
 825                 }
 826         }
 827 }