languages/Language.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  * @subpackage Language
   5  */
   6
   7 if( !defined( 'MEDIAWIKI' ) ) {
   8         echo "This file is part of MediaWiki, it is not a valid entry point.\n";
   9         exit( 1 );
  10 }
  11
  12 #
  13 # In general you should not make customizations in these language files
  14 # directly, but should use the MediaWiki: special namespace to customize
  15 # user interface messages through the wiki.
  16 # See http://meta.wikipedia.org/wiki/MediaWiki_namespace
  17 #
  18 # NOTE TO TRANSLATORS: Do not copy this whole file when making translations!
  19 # A lot of common constants and a base class with inheritable methods are
  20 # defined here, which should not be redefined. See the other LanguageXx.php
  21 # files for examples.
  22 #
  23
  24 # Read language names
  25 global $wgLanguageNames;
  26 require_once( 'Names.php' );
  27
  28 global $wgInputEncoding, $wgOutputEncoding;
  29 global $wgDBname, $wgMemc;
  30
  31 /**
  32  * These are always UTF-8, they exist only for backwards compatibility
  33  */
  34 $wgInputEncoding    = "UTF-8";
  35 $wgOutputEncoding       = "UTF-8";
  36
  37 if( function_exists( 'mb_strtoupper' ) ) {
  38         mb_internal_encoding('UTF-8');
  39 }
  40
  41 /* a fake language converter */
  42 class FakeConverter {
  43         var $mLang;
  44         function FakeConverter($langobj) {$this->mLang = $langobj;}
  45         function convert($t, $i) {return $t;}
  46         function parserConvert($t, $p) {return $t;}
  47         function getVariants() { return array( $this->mLang->getCode() ); }
  48         function getPreferredVariant() {return $this->mLang->getCode(); }
  49         function findVariantLink(&$l, &$n) {}
  50         function getExtraHashOptions() {return '';}
  51         function getParsedTitle() {return '';}
  52         function markNoConversion($text) {return $text;}
  53         function convertCategoryKey( $key ) {return $key; }
  54
  55 }
  56
  57 #--------------------------------------------------------------------------
  58 # Internationalisation code
  59 #--------------------------------------------------------------------------
  60
  61 class Language {
  62         var $mConverter, $mVariants, $mCode, $mLoaded = false;
  63
  64         static public $mLocalisationKeys = array( 'fallback', 'namespaceNames',
  65                 'quickbarSettings', 'skinNames', 'mathNames',
  66                 'bookstoreList', 'magicWords', 'messages', 'rtl', 'digitTransformTable',
  67                 'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
  68                 'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
  69                 'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
  70                 'defaultDateFormat', 'extraUserToggles' );
  71
  72         static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
  73                 'dateFormats', 'defaultUserOptionOverrides', 'magicWords' );
  74
  75         static public $mMergeableListKeys = array( 'extraUserToggles' );
  76
  77         static public $mLocalisationCache = array();
  78
  79         static public $mWeekdayMsgs = array(
  80                 'sunday', 'monday', 'tuesday', 'wednesday', 'thursday',
  81                 'friday', 'saturday'
  82         );
  83
  84         static public $mWeekdayAbbrevMsgs = array(
  85                 'sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'
  86         );
  87
  88         static public $mMonthMsgs = array(
  89                 'january', 'february', 'march', 'april', 'may_long', 'june',
  90                 'july', 'august', 'september', 'october', 'november',
  91                 'december'
  92         );
  93         static public $mMonthGenMsgs = array(
  94                 'january-gen', 'february-gen', 'march-gen', 'april-gen', 'may-gen', 'june-gen',
  95                 'july-gen', 'august-gen', 'september-gen', 'october-gen', 'november-gen',
  96                 'december-gen'
  97         );
  98         static public $mMonthAbbrevMsgs = array(
  99                 'jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug',
 100                 'sep', 'oct', 'nov', 'dec'
 101         );
 102
 103         /**
 104          * Create a language object for a given language code
 105          */
 106         static function factory( $code ) {
 107                 global $IP;
 108                 static $recursionLevel = 0;
 109
 110                 if ( $code == 'en' ) {
 111                         $class = 'Language';
 112                 } else {
 113                         $class = 'Language' . str_replace( '-', '_', ucfirst( $code ) );
 114                         // Preload base classes to work around APC/PHP5 bug
 115                         if ( file_exists( "$IP/languages/$class.deps.php" ) ) {
 116                                 include_once("$IP/languages/$class.deps.php");
 117                         }
 118                         if ( file_exists( "$IP/languages/$class.php" ) ) {
 119                                 include_once("$IP/languages/$class.php");
 120                         }
 121                 }
 122
 123                 if ( $recursionLevel > 5 ) {
 124                         throw new MWException( "Language fallback loop detected when creating class $class\n" );
 125                 }
 126
 127                 if( ! class_exists( $class ) ) {
 128                         $fallback = Language::getFallbackFor( $code );
 129                         ++$recursionLevel;
 130                         $lang = Language::factory( $fallback );
 131                         --$recursionLevel;
 132                         $lang->setCode( $code );
 133                 } else {
 134                         $lang = new $class;
 135                 }
 136
 137                 return $lang;
 138         }
 139
 140         function __construct() {
 141                 $this->mConverter = new FakeConverter($this);
 142                 // Set the code to the name of the descendant
 143                 if ( get_class( $this ) == 'Language' ) {
 144                         $this->mCode = 'en';
 145                 } else {
 146                         $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
 147                 }
 148         }
 149
 150         /**
 151          * Hook which will be called if this is the content language.
 152          * Descendants can use this to register hook functions or modify globals
 153          */
 154         function initContLang() {}
 155
 156         /**
 157          * @deprecated
 158          * @return array
 159          */
 160         function getDefaultUserOptions() {
 161                 return User::getDefaultOptions();
 162         }
 163
 164         /**
 165          * Exports $wgBookstoreListEn
 166          * @return array
 167          */
 168         function getBookstoreList() {
 169                 $this->load();
 170                 return $this->bookstoreList;
 171         }
 172
 173         /**
 174          * @return array
 175          */
 176         function getNamespaces() {
 177                 $this->load();
 178                 return $this->namespaceNames;
 179         }
 180
 181         /**
 182          * A convenience function that returns the same thing as
 183          * getNamespaces() except with the array values changed to ' '
 184          * where it found '_', useful for producing output to be displayed
 185          * e.g. in <select> forms.
 186          *
 187          * @return array
 188          */
 189         function getFormattedNamespaces() {
 190                 $ns = $this->getNamespaces();
 191                 foreach($ns as $k => $v) {
 192                         $ns[$k] = strtr($v, '_', ' ');
 193                 }
 194                 return $ns;
 195         }
 196
 197         /**
 198          * Get a namespace value by key
 199          * <code>
 200          * $mw_ns = $wgContLang->getNsText( NS_MEDIAWIKI );
 201          * echo $mw_ns; // prints 'MediaWiki'
 202          * </code>
 203          *
 204          * @param int $index the array key of the namespace to return
 205          * @return mixed, string if the namespace value exists, otherwise false
 206          */
 207         function getNsText( $index ) {
 208                 $ns = $this->getNamespaces();
 209                 return isset( $ns[$index] ) ? $ns[$index] : false;
 210         }
 211
 212         /**
 213          * A convenience function that returns the same thing as
 214          * getNsText() except with '_' changed to ' ', useful for
 215          * producing output.
 216          *
 217          * @return array
 218          */
 219         function getFormattedNsText( $index ) {
 220                 $ns = $this->getNsText( $index );
 221                 return strtr($ns, '_', ' ');
 222         }
 223
 224         /**
 225          * Get a namespace key by value, case insensetive.
 226          *
 227          * @param string $text
 228          * @return mixed An integer if $text is a valid value otherwise false
 229          */
 230         function getNsIndex( $text ) {
 231                 $this->load();
 232                 $index = @$this->mNamespaceIds[$this->lc($text)];
 233                 if ( is_null( $index ) ) {
 234                         return false;
 235                 } else {
 236                         return $index;
 237                 }
 238         }
 239
 240         /**
 241          * short names for language variants used for language conversion links.
 242          *
 243          * @param string $code
 244          * @return string
 245          */
 246         function getVariantname( $code ) {
 247                 return $this->getMessageFromDB( "variantname-$code" );
 248         }
 249
 250         function specialPage( $name ) {
 251                 return $this->getNsText(NS_SPECIAL) . ':' . $name;
 252         }
 253
 254         function getQuickbarSettings() {
 255                 $this->load();
 256                 return $this->quickbarSettings;
 257         }
 258
 259         function getSkinNames() {
 260                 $this->load();
 261                 return $this->skinNames;
 262         }
 263
 264         function getMathNames() {
 265                 $this->load();
 266                 return $this->mathNames;
 267         }
 268
 269         function getDatePreferences() {
 270                 $this->load();
 271                 return $this->datePreferences;
 272         }
 273
 274         function getDateFormats() {
 275                 $this->load();
 276                 return $this->dateFormats;
 277         }
 278
 279         function getDefaultDateFormat() {
 280                 $this->load();
 281                 return $this->defaultDateFormat;
 282         }
 283
 284         function getDatePreferenceMigrationMap() {
 285                 $this->load();
 286                 return $this->datePreferenceMigrationMap;
 287         }
 288
 289         function getDefaultUserOptionOverrides() {
 290                 $this->load();
 291                 return $this->defaultUserOptionOverrides;
 292         }
 293
 294         function getExtraUserToggles() {
 295                 $this->load();
 296                 return $this->extraUserToggles;
 297         }
 298
 299         function getUserToggle( $tog ) {
 300                 return $this->getMessageFromDB( "tog-$tog" );
 301         }
 302
 303         /**
 304          * Get language names, indexed by code.
 305          * If $customisedOnly is true, only returns codes with a messages file
 306          */
 307         function getLanguageNames( $customisedOnly = false ) {
 308                 global $wgLanguageNames;
 309                 if ( !$customisedOnly ) {
 310                         return $wgLanguageNames;
 311                 }
 312
 313                 global $IP;
 314                 $messageFiles = glob( "$IP/languages/Messages*.php" );
 315                 $names = array();
 316                 foreach ( $messageFiles as $file ) {
 317                         if( preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $file, $m ) ) {
 318                                 $code = str_replace( '_', '-', strtolower( $m[1] ) );
 319                                 if ( isset( $wgLanguageNames[$code] ) ) {
 320                                         $names[$code] = $wgLanguageNames[$code];
 321                                 }
 322                         }
 323                 }
 324                 return $names;
 325         }
 326
 327         /**
 328          * Ugly hack to get a message maybe from the MediaWiki namespace, if this
 329          * language object is the content or user language.
 330          */
 331         function getMessageFromDB( $msg ) {
 332                 global $wgContLang, $wgLang;
 333                 if ( $wgContLang->getCode() == $this->getCode() ) {
 334                         # Content language
 335                         return wfMsgForContent( $msg );
 336                 } elseif ( $wgLang->getCode() == $this->getCode() ) {
 337                         # User language
 338                         return wfMsg( $msg );
 339                 } else {
 340                         # Neither, get from localisation
 341                         return $this->getMessage( $msg );
 342                 }
 343         }
 344
 345         function getLanguageName( $code ) {
 346                 global $wgLanguageNames;
 347                 if ( ! array_key_exists( $code, $wgLanguageNames ) ) {
 348                         return '';
 349                 }
 350                 return $wgLanguageNames[$code];
 351         }
 352
 353         function getMonthName( $key ) {
 354                 return $this->getMessageFromDB( self::$mMonthMsgs[$key-1] );
 355         }
 356
 357         function getMonthNameGen( $key ) {
 358                 return $this->getMessageFromDB( self::$mMonthGenMsgs[$key-1] );
 359         }
 360
 361         function getMonthAbbreviation( $key ) {
 362                 return $this->getMessageFromDB( self::$mMonthAbbrevMsgs[$key-1] );
 363         }
 364
 365         function getWeekdayName( $key ) {
 366                 return $this->getMessageFromDB( self::$mWeekdayMsgs[$key-1] );
 367         }
 368
 369         function getWeekdayAbbreviation( $key ) {
 370                 return $this->getMessageFromDB( self::$mWeekdayAbbrevMsgs[$key-1] );
 371         }
 372
 373         /**
 374          * Used by date() and time() to adjust the time output.
 375          * @public
 376          * @param int   $ts the time in date('YmdHis') format
 377          * @param mixed $tz adjust the time by this amount (default false,
 378          *                  mean we get user timecorrection setting)
 379          * @return int
 380          */
 381         function userAdjust( $ts, $tz = false ) {
 382                 global $wgUser, $wgLocalTZoffset;
 383
 384                 if (!$tz) {
 385                         $tz = $wgUser->getOption( 'timecorrection' );
 386                 }
 387
 388                 # minutes and hours differences:
 389                 $minDiff = 0;
 390                 $hrDiff  = 0;
 391
 392                 if ( $tz === '' ) {
 393                         # Global offset in minutes.
 394                         if( isset($wgLocalTZoffset) ) {
 395                                 $hrDiff = $wgLocalTZoffset % 60;
 396                                 $minDiff = $wgLocalTZoffset - ($hrDiff * 60);
 397                         }
 398                 } elseif ( strpos( $tz, ':' ) !== false ) {
 399                         $tzArray = explode( ':', $tz );
 400                         $hrDiff = intval($tzArray[0]);
 401                         $minDiff = intval($hrDiff < 0 ? -$tzArray[1] : $tzArray[1]);
 402                 } else {
 403                         $hrDiff = intval( $tz );
 404                 }
 405
 406                 # No difference ? Return time unchanged
 407                 if ( 0 == $hrDiff && 0 == $minDiff ) { return $ts; }
 408
 409                 # Generate an adjusted date
 410                 $t = mktime( (
 411                   (int)substr( $ts, 8, 2) ) + $hrDiff, # Hours
 412                   (int)substr( $ts, 10, 2 ) + $minDiff, # Minutes
 413                   (int)substr( $ts, 12, 2 ), # Seconds
 414                   (int)substr( $ts, 4, 2 ), # Month
 415                   (int)substr( $ts, 6, 2 ), # Day
 416                   (int)substr( $ts, 0, 4 ) ); #Year
 417                 return date( 'YmdHis', $t );
 418         }
 419
 420         /**
 421          * This is a workalike of PHP's date() function, but with better
 422          * internationalisation, a reduced set of format characters, and a better
 423          * escaping format.
 424          *
 425          * Supported format characters are dDjlFmMnYyHis. See the PHP manual for
 426          * definitions. There are a number of extensions, which start with "x":
 427          *
 428          *    xn   Do not translate digits of the next numeric format character
 429          *    xr   Use roman numerals for the next numeric format character
 430          *    xx   Literal x
 431          *    xg   Genitive month name
 432          *
 433          * Characters enclosed in double quotes will be considered literal (with
 434          * the quotes themselves removed). Unmatched quotes will be considered
 435          * literal quotes. Example:
 436          *
 437          * "The month is" F       => The month is January
 438          * i's"                   => 20'11"
 439          *
 440          * Backslash escaping is also supported.
 441          *
 442          * @param string $format
 443          * @param string $ts 14-character timestamp
 444          *      YYYYMMDDHHMMSS
 445          *      01234567890123
 446          */
 447         function sprintfDate( $format, $ts ) {
 448                 $s = '';
 449                 $raw = false;
 450                 $roman = false;
 451                 for ( $p = 0; $p < strlen( $format ); $p++ ) {
 452                         $num = false;
 453                         $code = $format[$p];
 454                         if ( $code == 'x' && $p < strlen( $format ) - 1 ) {
 455                                 $code .= $format[++$p];
 456                         }
 457
 458                         switch ( $code ) {
 459                                 case 'xx':
 460                                         $s .= 'x';
 461                                         break;
 462                                 case 'xn':
 463                                         $raw = true;
 464                                         break;
 465                                 case 'xr':
 466                                         $roman = true;
 467                                         break;
 468                                 case 'xg':
 469                                         $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
 470                                         break;
 471                                 case 'd':
 472                                         $num = substr( $ts, 6, 2 );
 473                                         break;
 474                                 case 'D':
 475                                         $s .= $this->getWeekdayAbbreviation( self::calculateWeekday( $ts ) );
 476                                         break;
 477                                 case 'j':
 478                                         $num = intval( substr( $ts, 6, 2 ) );
 479                                         break;
 480                                 case 'l':
 481                                         $s .= $this->getWeekdayName( self::calculateWeekday( $ts ) );
 482                                         break;
 483                                 case 'F':
 484                                         $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
 485                                         break;
 486                                 case 'm':
 487                                         $num = substr( $ts, 4, 2 );
 488                                         break;
 489                                 case 'M':
 490                                         $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
 491                                         break;
 492                                 case 'n':
 493                                         $num = intval( substr( $ts, 4, 2 ) );
 494                                         break;
 495                                 case 'Y':
 496                                         $num = substr( $ts, 0, 4 );
 497                                         break;
 498                                 case 'y':
 499                                         $num = substr( $ts, 2, 2 );
 500                                         break;
 501                                 case 'H':
 502                                         $num = substr( $ts, 8, 2 );
 503                                         break;
 504                                 case 'G':
 505                                         $num = intval( substr( $ts, 8, 2 ) );
 506                                         break;
 507                                 case 'i':
 508                                         $num = substr( $ts, 10, 2 );
 509                                         break;
 510                                 case 's':
 511                                         $num = substr( $ts, 12, 2 );
 512                                         break;
 513                                 case '\\':
 514                                         # Backslash escaping
 515                                         if ( $p < strlen( $format ) - 1 ) {
 516                                                 $s .= $format[++$p];
 517                                         } else {
 518                                                 $s .= '\\';
 519                                         }
 520                                         break;
 521                                 case '"':
 522                                         # Quoted literal
 523                                         if ( $p < strlen( $format ) - 1 ) {
 524                                                 $endQuote = strpos( $format, '"', $p + 1 );
 525                                                 if ( $endQuote === false ) {
 526                                                         # No terminating quote, assume literal "
 527                                                         $s .= '"';
 528                                                 } else {
 529                                                         $s .= substr( $format, $p + 1, $endQuote - $p - 1 );
 530                                                         $p = $endQuote;
 531                                                 }
 532                                         } else {
 533                                                 # Quote at end of string, assume literal "
 534                                                 $s .= '"';
 535                                         }
 536                                         break;
 537                                 default:
 538                                         $s .= $format[$p];
 539                         }
 540                         if ( $num !== false ) {
 541                                 if ( $raw ) {
 542                                         $s .= $num;
 543                                         $raw = false;
 544                                 } elseif ( $roman ) {
 545                                         $s .= Language::romanNumeral( $num );
 546                                         $roman = false;
 547                                 } else {
 548                                         $s .= $this->formatNum( $num, true );
 549                                 }
 550                                 $num = false;
 551                         }
 552                 }
 553                 return $s;
 554         }
 555
 556         /**
 557          * Roman number formatting up to 100
 558          */
 559         static function romanNumeral( $num ) {
 560                 static $units = array( 0, 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X' );
 561                 static $decades = array( 0, 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', 'C' );
 562                 $num = intval( $num );
 563                 if ( $num > 100 || $num <= 0 ) {
 564                         return $num;
 565                 }
 566                 $s = '';
 567                 if ( $num >= 10 ) {
 568                         $s .= $decades[floor( $num / 10 )];
 569                         $num = $num % 10;
 570                 }
 571                 if ( $num >= 1 ) {
 572                         $s .= $units[$num];
 573                 }
 574                 return $s;
 575         }
 576
 577         /**
 578          * Calculate the day of the week for a 14-character timestamp
 579          * 1 for Sunday through to 7 for Saturday
 580          * This takes about 100us on a slow computer
 581          */
 582         static function calculateWeekday( $ts ) {
 583                 return date( 'w', wfTimestamp( TS_UNIX, $ts ) ) + 1;
 584         }
 585
 586         /**
 587          * This is meant to be used by time(), date(), and timeanddate() to get
 588          * the date preference they're supposed to use, it should be used in
 589          * all children.
 590          *
 591          *<code>
 592          * function timeanddate([...], $format = true) {
 593          *      $datePreference = $this->dateFormat($format);
 594          * [...]
 595          * }
 596          *</code>
 597          *
 598          * @param mixed $usePrefs: if true, the user's preference is used
 599          *                         if false, the site/language default is used
 600          *                         if int/string, assumed to be a format.
 601          * @return string
 602          */
 603         function dateFormat( $usePrefs = true ) {
 604                 global $wgUser;
 605
 606                 if( is_bool( $usePrefs ) ) {
 607                         if( $usePrefs ) {
 608                                 $datePreference = $wgUser->getDatePreference();
 609                         } else {
 610                                 $options = User::getDefaultOptions();
 611                                 $datePreference = (string)$options['date'];
 612                         }
 613                 } else {
 614                         $datePreference = (string)$usePrefs;
 615                 }
 616
 617                 // return int
 618                 if( $datePreference == '' ) {
 619                         return 'default';
 620                 }
 621
 622                 return $datePreference;
 623         }
 624
 625         /**
 626          * @public
 627          * @param mixed  $ts the time format which needs to be turned into a
 628          *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
 629          * @param bool   $adj whether to adjust the time output according to the
 630          *               user configured offset ($timecorrection)
 631          * @param mixed  $format true to use user's date format preference
 632          * @param string $timecorrection the time offset as returned by
 633          *               validateTimeZone() in Special:Preferences
 634          * @return string
 635          */
 636         function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
 637                 $this->load();
 638                 if ( $adj ) {
 639                         $ts = $this->userAdjust( $ts, $timecorrection );
 640                 }
 641
 642                 $pref = $this->dateFormat( $format );
 643                 if( $pref == 'default' || !isset( $this->dateFormats["$pref date"] ) ) {
 644                         $pref = $this->defaultDateFormat;
 645                 }
 646                 return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
 647         }
 648
 649         /**
 650         * @public
 651         * @param mixed  $ts the time format which needs to be turned into a
 652         *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
 653         * @param bool   $adj whether to adjust the time output according to the
 654         *               user configured offset ($timecorrection)
 655         * @param mixed  $format true to use user's date format preference
 656         * @param string $timecorrection the time offset as returned by
 657         *               validateTimeZone() in Special:Preferences
 658         * @return string
 659         */
 660         function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
 661                 $this->load();
 662                 if ( $adj ) {
 663                         $ts = $this->userAdjust( $ts, $timecorrection );
 664                 }
 665
 666                 $pref = $this->dateFormat( $format );
 667                 if( $pref == 'default' || !isset( $this->dateFormats["$pref time"] ) ) {
 668                         $pref = $this->defaultDateFormat;
 669                 }
 670                 return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
 671         }
 672
 673         /**
 674         * @public
 675         * @param mixed  $ts the time format which needs to be turned into a
 676         *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
 677         * @param bool   $adj whether to adjust the time output according to the
 678         *               user configured offset ($timecorrection)
 679
 680         * @param mixed  $format what format to return, if it's false output the
 681         *               default one (default true)
 682         * @param string $timecorrection the time offset as returned by
 683         *               validateTimeZone() in Special:Preferences
 684         * @return string
 685         */
 686         function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false) {
 687                 $this->load();
 688                 if ( $adj ) {
 689                         $ts = $this->userAdjust( $ts, $timecorrection );
 690                 }
 691
 692                 $pref = $this->dateFormat( $format );
 693                 if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
 694                         $pref = $this->defaultDateFormat;
 695                 }
 696
 697                 return $this->sprintfDate( $this->dateFormats["$pref both"], $ts );
 698         }
 699
 700         function getMessage( $key ) {
 701                 $this->load();
 702                 return @$this->messages[$key];
 703         }
 704
 705         function getAllMessages() {
 706                 $this->load();
 707                 return $this->messages;
 708         }
 709
 710         function iconv( $in, $out, $string ) {
 711                 # For most languages, this is a wrapper for iconv
 712                 return iconv( $in, $out, $string );
 713         }
 714
 715         function ucfirst( $str ) {
 716                 return self::uc( $str, true );
 717         }
 718
 719         function uc( $str, $first = false ) {
 720                 if ( function_exists( 'mb_strtoupper' ) )
 721                         if ( $first )
 722                                 if ( self::isMultibyte( $str ) )
 723                                         return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
 724                                 else
 725                                         return ucfirst( $str );
 726                         else
 727                                 return self::isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
 728                 else
 729                         if ( self::isMultibyte( $str ) ) {
 730                                 list( $wikiUpperChars ) = $this->getCaseMaps();
 731                                 $x = $first ? '^' : '';
 732                                 return preg_replace(
 733                                         "/$x([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
 734                                         "strtr( \"\$1\" , \$wikiUpperChars )",
 735                                         $str
 736                                 );
 737                         } else
 738                                 return $first ? ucfirst( $str ) : strtoupper( $str );
 739         }
 740
 741         function lcfirst( $str ) {
 742                 return self::lc( $str, true );
 743         }
 744
 745         function lc( $str, $first = false ) {
 746                 if ( function_exists( 'mb_strtolower' ) )
 747                         if ( $first )
 748                                 if ( self::isMultibyte( $str ) )
 749                                         return mb_strtolower( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
 750                                 else
 751                                         return strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 );
 752                         else
 753                                 return self::isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
 754                 else
 755                         if ( self::isMultibyte( $str ) ) {
 756                                 list( , $wikiLowerChars ) = self::getCaseMaps();
 757                                 $x = $first ? '^' : '';
 758                                 return preg_replace(
 759                                         "/$x([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/e",
 760                                         "strtr( \"\$1\" , \$wikiLowerChars )",
 761                                         $str
 762                                 );
 763                         } else
 764                                 return $first ? strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 ) : strtolower( $str );
 765         }
 766
 767         function isMultibyte( $str ) {
 768                 return (bool)preg_match( '/[\x80-\xff]/', $str );
 769         }
 770
 771         function checkTitleEncoding( $s ) {
 772                 if( is_array( $s ) ) {
 773                         wfDebugDieBacktrace( 'Given array to checkTitleEncoding.' );
 774                 }
 775                 # Check for non-UTF-8 URLs
 776                 $ishigh = preg_match( '/[\x80-\xff]/', $s);
 777                 if(!$ishigh) return $s;
 778
 779                 $isutf8 = preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
 780                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})+$/', $s );
 781                 if( $isutf8 ) return $s;
 782
 783                 return $this->iconv( $this->fallback8bitEncoding(), "utf-8", $s );
 784         }
 785
 786         function fallback8bitEncoding() {
 787                 $this->load();
 788                 return $this->fallback8bitEncoding;
 789         }
 790
 791         /**
 792          * Some languages have special punctuation to strip out
 793          * or characters which need to be converted for MySQL's
 794          * indexing to grok it correctly. Make such changes here.
 795          *
 796          * @param string $in
 797          * @return string
 798          */
 799         function stripForSearch( $string ) {
 800                 # MySQL fulltext index doesn't grok utf-8, so we
 801                 # need to fold cases and convert to hex
 802
 803                 wfProfileIn( __METHOD__ );
 804                 if( function_exists( 'mb_strtolower' ) ) {
 805                         $out = preg_replace(
 806                                 "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
 807                                 "'U8' . bin2hex( \"$1\" )",
 808                                 mb_strtolower( $string ) );
 809                 } else {
 810                         list( , $wikiLowerChars ) = self::getCaseMaps();
 811                         $out = preg_replace(
 812                                 "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
 813                                 "'U8' . bin2hex( strtr( \"\$1\", \$wikiLowerChars ) )",
 814                                 $string );
 815                 }
 816                 wfProfileOut( __METHOD__ );
 817                 return $out;
 818         }
 819
 820         function convertForSearchResult( $termsArray ) {
 821                 # some languages, e.g. Chinese, need to do a conversion
 822                 # in order for search results to be displayed correctly
 823                 return $termsArray;
 824         }
 825
 826         /**
 827          * Get the first character of a string.
 828          *
 829          * @param string $s
 830          * @return string
 831          */
 832         function firstChar( $s ) {
 833                 preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
 834                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})/', $s, $matches);
 835
 836                 return isset( $matches[1] ) ? $matches[1] : "";
 837         }
 838
 839         function initEncoding() {
 840                 # Some languages may have an alternate char encoding option
 841                 # (Esperanto X-coding, Japanese furigana conversion, etc)
 842                 # If this language is used as the primary content language,
 843                 # an override to the defaults can be set here on startup.
 844         }
 845
 846         function recodeForEdit( $s ) {
 847                 # For some languages we'll want to explicitly specify
 848                 # which characters make it into the edit box raw
 849                 # or are converted in some way or another.
 850                 # Note that if wgOutputEncoding is different from
 851                 # wgInputEncoding, this text will be further converted
 852                 # to wgOutputEncoding.
 853                 global $wgEditEncoding;
 854                 if( $wgEditEncoding == '' or
 855                   $wgEditEncoding == 'UTF-8' ) {
 856                         return $s;
 857                 } else {
 858                         return $this->iconv( 'UTF-8', $wgEditEncoding, $s );
 859                 }
 860         }
 861
 862         function recodeInput( $s ) {
 863                 # Take the previous into account.
 864                 global $wgEditEncoding;
 865                 if($wgEditEncoding != "") {
 866                         $enc = $wgEditEncoding;
 867                 } else {
 868                         $enc = 'UTF-8';
 869                 }
 870                 if( $enc == 'UTF-8' ) {
 871                         return $s;
 872                 } else {
 873                         return $this->iconv( $enc, 'UTF-8', $s );
 874                 }
 875         }
 876
 877         /**
 878          * For right-to-left language support
 879          *
 880          * @return bool
 881          */
 882         function isRTL() {
 883                 $this->load();
 884                 return $this->rtl;
 885         }
 886
 887         /**
 888          * A hidden direction mark (LRM or RLM), depending on the language direction
 889          *
 890          * @return string
 891          */
 892         function getDirMark() {
 893                 return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
 894         }
 895
 896         /**
 897          * An arrow, depending on the language direction
 898          *
 899          * @return string
 900          */
 901         function getArrow() {
 902                 return $this->isRTL() ? '←' : '→';
 903         }
 904
 905         /**
 906          * To allow "foo[[bar]]" to extend the link over the whole word "foobar"
 907          *
 908          * @return bool
 909          */
 910         function linkPrefixExtension() {
 911                 $this->load();
 912                 return $this->linkPrefixExtension;
 913         }
 914
 915         function &getMagicWords() {
 916                 $this->load();
 917                 return $this->magicWords;
 918         }
 919
 920         # Fill a MagicWord object with data from here
 921         function getMagic( &$mw ) {
 922                 if ( !isset( $this->mMagicExtensions ) ) {
 923                         $this->mMagicExtensions = array();
 924                         wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
 925                 }
 926                 if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
 927                         $rawEntry = $this->mMagicExtensions[$mw->mId];
 928                 } else {
 929                         $magicWords =& $this->getMagicWords();
 930                         if ( isset( $magicWords[$mw->mId] ) ) {
 931                                 $rawEntry = $magicWords[$mw->mId];
 932                         } else {
 933                                 # Fall back to English if local list is incomplete
 934                                 $magicWords =& Language::getMagicWords();
 935                                 $rawEntry = $magicWords[$mw->mId];
 936                         }
 937                 }
 938
 939                 if( !is_array( $rawEntry ) ) {
 940                         error_log( "\"$rawEntry\" is not a valid magic thingie for \"$mw->mId\"" );
 941                 }
 942                 $mw->mCaseSensitive = $rawEntry[0];
 943                 $mw->mSynonyms = array_slice( $rawEntry, 1 );
 944         }
 945
 946         /**
 947          * Italic is unsuitable for some languages
 948          *
 949          * @public
 950          *
 951          * @param string $text The text to be emphasized.
 952          * @return string
 953          */
 954         function emphasize( $text ) {
 955                 return "<em>$text</em>";
 956         }
 957
 958          /**
 959          * Normally we output all numbers in plain en_US style, that is
 960          * 293,291.235 for twohundredninetythreethousand-twohundredninetyone
 961          * point twohundredthirtyfive. However this is not sutable for all
 962          * languages, some such as Pakaran want ੨੯੩,੨੯੫.੨੩੫ and others such as
 963          * Icelandic just want to use commas instead of dots, and dots instead
 964          * of commas like "293.291,235".
 965          *
 966          * An example of this function being called:
 967          * <code>
 968          * wfMsg( 'message', $wgLang->formatNum( $num ) )
 969          * </code>
 970          *
 971          * See LanguageGu.php for the Gujarati implementation and
 972          * LanguageIs.php for the , => . and . => , implementation.
 973          *
 974          * @todo check if it's viable to use localeconv() for the decimal
 975          *       seperator thing.
 976          * @public
 977          * @param mixed $number the string to be formatted, should be an integer or
 978          *        a floating point number.
 979          * @param bool $nocommafy Set to true for special numbers like dates
 980          * @return string
 981          */
 982         function formatNum( $number, $nocommafy = false ) {
 983                 global $wgTranslateNumerals;
 984                 if (!$nocommafy) {
 985                         $number = $this->commafy($number);
 986                         $s = $this->separatorTransformTable();
 987                         if (!is_null($s)) { $number = strtr($number, $s); }
 988                 }
 989
 990                 if ($wgTranslateNumerals) {
 991                         $s = $this->digitTransformTable();
 992                         if (!is_null($s)) { $number = strtr($number, $s); }
 993                 }
 994
 995                 return $number;
 996         }
 997
 998         /**
 999          * Adds commas to a given number
1000          *
1001          * @param mixed $_
1002          * @return string
1003          */
1004         function commafy($_) {
1005                 return strrev((string)preg_replace('/(\d{3})(?=\d)(?!\d*\.)/','$1,',strrev($_)));
1006         }
1007
1008         function digitTransformTable() {
1009                 $this->load();
1010                 return $this->digitTransformTable;
1011         }
1012
1013         function separatorTransformTable() {
1014                 $this->load();
1015                 return $this->separatorTransformTable;
1016         }
1017
1018
1019         /**
1020          * For the credit list in includes/Credits.php (action=credits)
1021          *
1022          * @param array $l
1023          * @return string
1024          */
1025         function listToText( $l ) {
1026                 $s = '';
1027                 $m = count($l) - 1;
1028                 for ($i = $m; $i >= 0; $i--) {
1029                         if ($i == $m) {
1030                                 $s = $l[$i];
1031                         } else if ($i == $m - 1) {
1032                                 $s = $l[$i] . ' ' . $this->getMessageFromDB( 'and' ) . ' ' . $s;
1033                         } else {
1034                                 $s = $l[$i] . ', ' . $s;
1035                         }
1036                 }
1037                 return $s;
1038         }
1039
1040         # Crop a string from the beginning or end to a certain number of bytes.
1041         # (Bytes are used because our storage has limited byte lengths for some
1042         # columns in the database.) Multibyte charsets will need to make sure that
1043         # only whole characters are included!
1044         #
1045         # $length does not include the optional ellipsis.
1046         # If $length is negative, snip from the beginning
1047         function truncate( $string, $length, $ellipsis = "" ) {
1048                 if( $length == 0 ) {
1049                         return $ellipsis;
1050                 }
1051                 if ( strlen( $string ) <= abs( $length ) ) {
1052                         return $string;
1053                 }
1054                 if( $length > 0 ) {
1055                         $string = substr( $string, 0, $length );
1056                         $char = ord( $string[strlen( $string ) - 1] );
1057                         if ($char >= 0xc0) {
1058                                 # We got the first byte only of a multibyte char; remove it.
1059                                 $string = substr( $string, 0, -1 );
1060                         } elseif( $char >= 0x80 &&
1061                                   preg_match( '/^(.*)(?:[\xe0-\xef][\x80-\xbf]|' .
1062                                               '[\xf0-\xf7][\x80-\xbf]{1,2})$/', $string, $m ) ) {
1063                             # We chopped in the middle of a character; remove it
1064                                 $string = $m[1];
1065                         }
1066                         return $string . $ellipsis;
1067                 } else {
1068                         $string = substr( $string, $length );
1069                         $char = ord( $string[0] );
1070                         if( $char >= 0x80 && $char < 0xc0 ) {
1071                                 # We chopped in the middle of a character; remove the whole thing
1072                                 $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
1073                         }
1074                         return $ellipsis . $string;
1075                 }
1076         }
1077
1078         /**
1079          * Grammatical transformations, needed for inflected languages
1080          * Invoked by putting {{grammar:case|word}} in a message
1081          *
1082          * @param string $word
1083          * @param string $case
1084          * @return string
1085          */
1086         function convertGrammar( $word, $case ) {
1087                 global $wgGrammarForms;
1088                 if ( isset($wgGrammarForms['en'][$case][$word]) ) {
1089                         return $wgGrammarForms['en'][$case][$word];
1090                 }
1091                 return $word;
1092         }
1093
1094         /**
1095          * Plural form transformations, needed for some languages.
1096          * For example, where are 3 form of plural in Russian and Polish,
1097          * depending on "count mod 10". See [[w:Plural]]
1098          * For English it is pretty simple.
1099          *
1100          * Invoked by putting {{plural:count|wordform1|wordform2}}
1101          * or {{plural:count|wordform1|wordform2|wordform3}}
1102          *
1103          * Example: {{plural:{{NUMBEROFARTICLES}}|article|articles}}
1104          *
1105          * @param integer $count
1106          * @param string $wordform1
1107          * @param string $wordform2
1108          * @param string $wordform3 (optional)
1109          * @return string
1110          */
1111         function convertPlural( $count, $w1, $w2, $w3) {
1112                 return $count == '1' ? $w1 : $w2;
1113         }
1114
1115         /**
1116          * For translaing of expiry times
1117          * @param string The validated block time in English
1118          * @return Somehow translated block time
1119          * @see LanguageFi.php for example implementation
1120          */
1121         function translateBlockExpiry( $str ) {
1122
1123                 $scBlockExpiryOptions = $this->getMessageFromDB( 'ipboptions' );
1124
1125                 if ( $scBlockExpiryOptions == '-') {
1126                         return $str;
1127                 }
1128
1129                 foreach (explode(',', $scBlockExpiryOptions) as $option) {
1130                         if ( strpos($option, ":") === false )
1131                                 continue;
1132                         list($show, $value) = explode(":", $option);
1133                         if ( strcmp ( $str, $value) == 0 )
1134                                 return '<span title="' . htmlspecialchars($str). '">' .
1135                                         htmlspecialchars( trim( $show ) ) . '</span>';
1136                 }
1137
1138                 return $str;
1139         }
1140
1141         /**
1142          * languages like Chinese need to be segmented in order for the diff
1143          * to be of any use
1144          *
1145          * @param string $text
1146          * @return string
1147          */
1148         function segmentForDiff( $text ) {
1149                 return $text;
1150         }
1151
1152         /**
1153          * and unsegment to show the result
1154          *
1155          * @param string $text
1156          * @return string
1157          */
1158         function unsegmentForDiff( $text ) {
1159                 return $text;
1160         }
1161
1162         # convert text to different variants of a language.
1163         function convert( $text, $isTitle = false) {
1164                 return $this->mConverter->convert($text, $isTitle);
1165         }
1166
1167         # Convert text from within Parser
1168         function parserConvert( $text, &$parser ) {
1169                 return $this->mConverter->parserConvert( $text, $parser );
1170         }
1171
1172         /**
1173          * Perform output conversion on a string, and encode for safe HTML output.
1174          * @param string $text
1175          * @param bool $isTitle -- wtf?
1176          * @return string
1177          * @todo this should get integrated somewhere sane
1178          */
1179         function convertHtml( $text, $isTitle = false ) {
1180                 return htmlspecialchars( $this->convert( $text, $isTitle ) );
1181         }
1182
1183         function convertCategoryKey( $key ) {
1184                 return $this->mConverter->convertCategoryKey( $key );
1185         }
1186
1187         /**
1188          * get the list of variants supported by this langauge
1189          * see sample implementation in LanguageZh.php
1190          *
1191          * @return array an array of language codes
1192          */
1193         function getVariants() {
1194                 return $this->mConverter->getVariants();
1195         }
1196
1197
1198         function getPreferredVariant( $fromUser = true ) {
1199                 return $this->mConverter->getPreferredVariant( $fromUser );
1200         }
1201
1202         /**
1203          * if a language supports multiple variants, it is
1204          * possible that non-existing link in one variant
1205          * actually exists in another variant. this function
1206          * tries to find it. See e.g. LanguageZh.php
1207          *
1208          * @param string $link the name of the link
1209          * @param mixed $nt the title object of the link
1210          * @return null the input parameters may be modified upon return
1211          */
1212         function findVariantLink( &$link, &$nt ) {
1213                 $this->mConverter->findVariantLink($link, $nt);
1214         }
1215
1216         /**
1217          * returns language specific options used by User::getPageRenderHash()
1218          * for example, the preferred language variant
1219          *
1220          * @return string
1221          * @public
1222          */
1223         function getExtraHashOptions() {
1224                 return $this->mConverter->getExtraHashOptions();
1225         }
1226
1227         /**
1228          * for languages that support multiple variants, the title of an
1229          * article may be displayed differently in different variants. this
1230          * function returns the apporiate title defined in the body of the article.
1231          *
1232          * @return string
1233          */
1234         function getParsedTitle() {
1235                 return $this->mConverter->getParsedTitle();
1236         }
1237
1238         /**
1239          * Enclose a string with the "no conversion" tag. This is used by
1240          * various functions in the Parser
1241          *
1242          * @param string $text text to be tagged for no conversion
1243          * @return string the tagged text
1244         */
1245         function markNoConversion( $text ) {
1246                 return $this->mConverter->markNoConversion( $text );
1247         }
1248
1249         /**
1250          * A regular expression to match legal word-trailing characters
1251          * which should be merged onto a link of the form [[foo]]bar.
1252          *
1253          * @return string
1254          * @public
1255          */
1256         function linkTrail() {
1257                 $this->load();
1258                 return $this->linkTrail;
1259         }
1260
1261         function getLangObj() {
1262                 return $this;
1263         }
1264
1265         /**
1266          * Get the RFC 3066 code for this language object
1267          */
1268         function getCode() {
1269                 return $this->mCode;
1270         }
1271
1272         function setCode( $code ) {
1273                 $this->mCode = $code;
1274         }
1275
1276         static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
1277                 return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
1278         }
1279
1280         static function getLocalisationArray( $code, $disableCache = false ) {
1281                 self::loadLocalisation( $code, $disableCache );
1282                 return self::$mLocalisationCache[$code];
1283         }
1284
1285         /**
1286          * Load localisation data for a given code into the static cache
1287          *
1288          * @return array Dependencies, map of filenames to mtimes
1289          */
1290         static function loadLocalisation( $code, $disableCache = false ) {
1291                 static $recursionGuard = array();
1292                 global $wgMemc, $wgDBname, $IP;
1293
1294                 if ( !$code ) {
1295                         throw new MWException( "Invalid language code requested" );
1296                 }
1297
1298                 if ( !$disableCache ) {
1299                         # Try the per-process cache
1300                         if ( isset( self::$mLocalisationCache[$code] ) ) {
1301                                 return self::$mLocalisationCache[$code]['deps'];
1302                         }
1303
1304                         wfProfileIn( __METHOD__ );
1305
1306                         # Try the serialized directory
1307                         $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
1308                         if ( $cache ) {
1309                                 self::$mLocalisationCache[$code] = $cache;
1310                                 wfDebug( "Got localisation for $code from precompiled data file\n" );
1311                                 wfProfileOut( __METHOD__ );
1312                                 return self::$mLocalisationCache[$code]['deps'];
1313                         }
1314
1315                         # Try the global cache
1316                         $memcKey = "$wgDBname:localisation:$code";
1317                         $cache = $wgMemc->get( $memcKey );
1318                         if ( $cache ) {
1319                                 $expired = false;
1320                                 # Check file modification times
1321                                 foreach ( $cache['deps'] as $file => $mtime ) {
1322                                         if ( filemtime( $file ) > $mtime ) {
1323                                                 $expired = true;
1324                                                 break;
1325                                         }
1326                                 }
1327                                 if ( self::isLocalisationOutOfDate( $cache ) ) {
1328                                         $wgMemc->delete( $memcKey );
1329                                         $cache = false;
1330                                         wfDebug( "Localisation cache for $code had expired due to update of $file\n" );
1331                                 } else {
1332                                         self::$mLocalisationCache[$code] = $cache;
1333                                         wfDebug( "Got localisation for $code from cache\n" );
1334                                         wfProfileOut( __METHOD__ );
1335                                         return $cache['deps'];
1336                                 }
1337                         }
1338                 } else {
1339                         wfProfileIn( __METHOD__ );
1340                 }
1341
1342                 if ( $code != 'en' ) {
1343                         $fallback = 'en';
1344                 } else {
1345                         $fallback = false;
1346                 }
1347
1348                 # Load the primary localisation from the source file
1349                 global $IP;
1350                 $filename = self::getFileName( "$IP/languages/Messages", $code, '.php' );
1351                 if ( !file_exists( $filename ) ) {
1352                         wfDebug( "No localisation file for $code, using implicit fallback to en\n" );
1353                         $cache = array();
1354                         $deps = array();
1355                 } else {
1356                         $deps = array( $filename => filemtime( $filename ) );
1357                         require( $filename );
1358                         $cache = compact( self::$mLocalisationKeys );
1359                         wfDebug( "Got localisation for $code from source\n" );
1360                 }
1361
1362                 if ( !empty( $fallback ) ) {
1363                         # Load the fallback localisation, with a circular reference guard
1364                         if ( isset( $recursionGuard[$code] ) ) {
1365                                 throw new MWException( "Error: Circular fallback reference in language code $code" );
1366                         }
1367                         $recursionGuard[$code] = true;
1368                         $newDeps = self::loadLocalisation( $fallback, $disableCache );
1369                         unset( $recursionGuard[$code] );
1370
1371                         $secondary = self::$mLocalisationCache[$fallback];
1372                         $deps = array_merge( $deps, $newDeps );
1373
1374                         # Merge the fallback localisation with the current localisation
1375                         foreach ( self::$mLocalisationKeys as $key ) {
1376                                 if ( isset( $cache[$key] ) ) {
1377                                         if ( isset( $secondary[$key] ) ) {
1378                                                 if ( in_array( $key, self::$mMergeableMapKeys ) ) {
1379                                                         $cache[$key] = $cache[$key] + $secondary[$key];
1380                                                 } elseif ( in_array( $key, self::$mMergeableListKeys ) ) {
1381                                                         $cache[$key] = array_merge( $secondary[$key], $cache[$key] );
1382                                                 }
1383                                         }
1384                                 } else {
1385                                         $cache[$key] = $secondary[$key];
1386                                 }
1387                         }
1388
1389                         # Merge bookstore lists if requested
1390                         if ( !empty( $cache['bookstoreList']['inherit'] ) ) {
1391                                 $cache['bookstoreList'] = array_merge( $cache['bookstoreList'], $secondary['bookstoreList'] );
1392                         }
1393                         if ( isset( $cache['bookstoreList']['inherit'] ) ) {
1394                                 unset( $cache['bookstoreList']['inherit'] );
1395                         }
1396                 }
1397
1398                 # Add dependencies to the cache entry
1399                 $cache['deps'] = $deps;
1400
1401                 # Save to both caches
1402                 self::$mLocalisationCache[$code] = $cache;
1403                 if ( !$disableCache ) {
1404                         $wgMemc->set( $memcKey, $cache );
1405                 }
1406
1407                 wfProfileOut( __METHOD__ );
1408                 return $deps;
1409         }
1410
1411         /**
1412          * Test if a given localisation cache is out of date with respect to the
1413          * source Messages files. This is done automatically for the global cache
1414          * in $wgMemc, but is only done on certain occasions for the serialized
1415          * data file.
1416          *
1417          * @param $cache mixed Either a language code or a cache array
1418          */
1419         static function isLocalisationOutOfDate( $cache ) {
1420                 if ( !is_array( $cache ) ) {
1421                         self::loadLocalisation( $cache );
1422                         $cache = self::$mLocalisationCache[$cache];
1423                 }
1424                 $expired = false;
1425                 foreach ( $cache['deps'] as $file => $mtime ) {
1426                         if ( filemtime( $file ) > $mtime ) {
1427                                 $expired = true;
1428                                 break;
1429                         }
1430                 }
1431                 return $expired;
1432         }
1433
1434         /**
1435          * Get the fallback for a given language
1436          */
1437         static function getFallbackFor( $code ) {
1438                 self::loadLocalisation( $code );
1439                 return self::$mLocalisationCache[$code]['fallback'];
1440         }
1441
1442         /**
1443          * Get all messages for a given language
1444          */
1445         static function getMessagesFor( $code ) {
1446                 self::loadLocalisation( $code );
1447                 return self::$mLocalisationCache[$code]['messages'];
1448         }
1449
1450         /**
1451          * Get a message for a given language
1452          */
1453         static function getMessageFor( $key, $code ) {
1454                 self::loadLocalisation( $code );
1455                 return @self::$mLocalisationCache[$code]['messages'][$key];
1456         }
1457
1458         /**
1459          * Load localisation data for this object
1460          */
1461         function load() {
1462                 if ( !$this->mLoaded ) {
1463                         self::loadLocalisation( $this->getCode() );
1464                         $cache =& self::$mLocalisationCache[$this->getCode()];
1465                         foreach ( self::$mLocalisationKeys as $key ) {
1466                                 $this->$key = $cache[$key];
1467                         }
1468                         $this->mLoaded = true;
1469
1470                         $this->fixUpSettings();
1471                 }
1472         }
1473
1474         /**
1475          * Do any necessary post-cache-load settings adjustment
1476          */
1477         function fixUpSettings() {
1478                 global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk, $wgMessageCache,
1479                         $wgNamespaceAliases, $wgAmericanDates;
1480                 wfProfileIn( __METHOD__ );
1481                 if ( $wgExtraNamespaces ) {
1482                         $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames;
1483                 }
1484
1485                 $this->namespaceNames[NS_PROJECT] = $wgMetaNamespace;
1486                 if ( $wgMetaNamespaceTalk ) {
1487                         $this->namespaceNames[NS_PROJECT_TALK] = $wgMetaNamespaceTalk;
1488                 } else {
1489                         $talk = $this->namespaceNames[NS_PROJECT_TALK];
1490                         $talk = str_replace( '$1', $wgMetaNamespace, $talk );
1491
1492                         # Allow grammar transformations
1493                         # Allowing full message-style parsing would make simple requests
1494                         # such as action=raw much more expensive than they need to be.
1495                         # This will hopefully cover most cases.
1496                         $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
1497                                 array( &$this, 'replaceGrammarInNamespace' ), $talk );
1498                         $talk = str_replace( ' ', '_', $talk );
1499                         $this->namespaceNames[NS_PROJECT_TALK] = $talk;
1500                 }
1501
1502                 # The above mixing may leave namespaces out of canonical order.
1503                 # Re-order by namespace ID number...
1504                 ksort( $this->namespaceNames );
1505
1506                 # Put namespace names and aliases into a hashtable.
1507                 # If this is too slow, then we should arrange it so that it is done
1508                 # before caching. The catch is that at pre-cache time, the above
1509                 # class-specific fixup hasn't been done.
1510                 $this->mNamespaceIds = array();
1511                 foreach ( $this->namespaceNames as $index => $name ) {
1512                         $this->mNamespaceIds[$this->lc($name)] = $index;
1513                 }
1514                 if ( $this->namespaceAliases ) {
1515                         foreach ( $this->namespaceAliases as $name => $index ) {
1516                                 $this->mNamespaceIds[$this->lc($name)] = $index;
1517                         }
1518                 }
1519                 if ( $wgNamespaceAliases ) {
1520                         foreach ( $wgNamespaceAliases as $name => $index ) {
1521                                 $this->mNamespaceIds[$this->lc($name)] = $index;
1522                         }
1523                 }
1524
1525                 if ( $this->defaultDateFormat == 'dmy or mdy' ) {
1526                         $this->defaultDateFormat = $wgAmericanDates ? 'mdy' : 'dmy';
1527                 }
1528                 wfProfileOut( __METHOD__ );
1529         }
1530
1531         function replaceGrammarInNamespace( $m ) {
1532                 return $this->convertGrammar( trim( $m[2] ), trim( $m[1] ) );
1533         }
1534
1535         static function getCaseMaps() {
1536                 static $wikiUpperChars, $wikiLowerChars;
1537                 global $IP;
1538                 if ( isset( $wikiUpperChars ) ) {
1539                         return array( $wikiUpperChars, $wikiLowerChars );
1540                 }
1541
1542                 wfProfileIn( __METHOD__ );
1543                 $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
1544                 if ( $arr === false ) {
1545                         throw new MWException(
1546                                 "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
1547                 }
1548                 extract( $arr );
1549                 wfProfileOut( __METHOD__ );
1550                 return array( $wikiUpperChars, $wikiLowerChars );
1551         }
1552 }
1553
1554 ?>