languages/Language.php

   1 <?php
   2 /**
   3  * @defgroup Language Language
   4  *
   5  * @file
   6  * @ingroup Language
   7  */
   8
   9 if( !defined( 'MEDIAWIKI' ) ) {
  10         echo "This file is part of MediaWiki, it is not a valid entry point.\n";
  11         exit( 1 );
  12 }
  13
  14 # Read language names
  15 global $wgLanguageNames;
  16 require_once( dirname(__FILE__) . '/Names.php' ) ;
  17
  18 global $wgInputEncoding, $wgOutputEncoding;
  19
  20 /**
  21  * These are always UTF-8, they exist only for backwards compatibility
  22  */
  23 $wgInputEncoding    = "UTF-8";
  24 $wgOutputEncoding       = "UTF-8";
  25
  26 if( function_exists( 'mb_strtoupper' ) ) {
  27         mb_internal_encoding('UTF-8');
  28 }
  29
  30 /**
  31  * a fake language converter
  32  *
  33  * @ingroup Language
  34  */
  35 class FakeConverter {
  36         var $mLang;
  37         function FakeConverter($langobj) {$this->mLang = $langobj;}
  38         function convert($t, $i) {return $t;}
  39         function parserConvert($t, $p) {return $t;}
  40         function getVariants() { return array( $this->mLang->getCode() ); }
  41         function getPreferredVariant() {return $this->mLang->getCode(); }
  42         function findVariantLink(&$l, &$n, $forTemplate = false) {}
  43         function getExtraHashOptions() {return '';}
  44         function getParsedTitle() {return '';}
  45         function markNoConversion($text, $noParse=false) {return $text;}
  46         function convertCategoryKey( $key ) {return $key; }
  47         function convertLinkToAllVariants($text){ return array( $this->mLang->getCode() => $text); }
  48         function armourMath($text){ return $text; }
  49 }
  50
  51 /**
  52  * Internationalisation code
  53  * @ingroup Language
  54  */
  55 class Language {
  56         var $mConverter, $mVariants, $mCode, $mLoaded = false;
  57         var $mMagicExtensions = array(), $mMagicHookDone = false;
  58
  59         static public $mLocalisationKeys = array( 'fallback', 'namespaceNames',
  60                 'skinNames', 'mathNames',
  61                 'bookstoreList', 'magicWords', 'messages', 'rtl', 'digitTransformTable',
  62                 'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
  63                 'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
  64                 'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
  65                 'defaultDateFormat', 'extraUserToggles', 'specialPageAliases',
  66                 'imageFiles'
  67         );
  68
  69         static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
  70                 'dateFormats', 'defaultUserOptionOverrides', 'magicWords', 'imageFiles' );
  71
  72         static public $mMergeableListKeys = array( 'extraUserToggles' );
  73
  74         static public $mMergeableAliasListKeys = array( 'specialPageAliases' );
  75
  76         static public $mLocalisationCache = array();
  77         static public $mLangObjCache = 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         static public $mIranianCalendarMonthMsgs = array(
 104                 'iranian-calendar-m1', 'iranian-calendar-m2', 'iranian-calendar-m3',
 105                 'iranian-calendar-m4', 'iranian-calendar-m5', 'iranian-calendar-m6',
 106                 'iranian-calendar-m7', 'iranian-calendar-m8', 'iranian-calendar-m9',
 107                 'iranian-calendar-m10', 'iranian-calendar-m11', 'iranian-calendar-m12'
 108         );
 109
 110         static public $mHebrewCalendarMonthMsgs = array(
 111                 'hebrew-calendar-m1', 'hebrew-calendar-m2', 'hebrew-calendar-m3',
 112                 'hebrew-calendar-m4', 'hebrew-calendar-m5', 'hebrew-calendar-m6',
 113                 'hebrew-calendar-m7', 'hebrew-calendar-m8', 'hebrew-calendar-m9',
 114                 'hebrew-calendar-m10', 'hebrew-calendar-m11', 'hebrew-calendar-m12',
 115                 'hebrew-calendar-m6a', 'hebrew-calendar-m6b'
 116         );
 117
 118         static public $mHebrewCalendarMonthGenMsgs = array(
 119                 'hebrew-calendar-m1-gen', 'hebrew-calendar-m2-gen', 'hebrew-calendar-m3-gen',
 120                 'hebrew-calendar-m4-gen', 'hebrew-calendar-m5-gen', 'hebrew-calendar-m6-gen',
 121                 'hebrew-calendar-m7-gen', 'hebrew-calendar-m8-gen', 'hebrew-calendar-m9-gen',
 122                 'hebrew-calendar-m10-gen', 'hebrew-calendar-m11-gen', 'hebrew-calendar-m12-gen',
 123                 'hebrew-calendar-m6a-gen', 'hebrew-calendar-m6b-gen'
 124         );
 125
 126         static public $mHijriCalendarMonthMsgs = array(
 127                 'hijri-calendar-m1', 'hijri-calendar-m2', 'hijri-calendar-m3',
 128                 'hijri-calendar-m4', 'hijri-calendar-m5', 'hijri-calendar-m6',
 129                 'hijri-calendar-m7', 'hijri-calendar-m8', 'hijri-calendar-m9',
 130                 'hijri-calendar-m10', 'hijri-calendar-m11', 'hijri-calendar-m12'
 131         );
 132
 133         /**
 134          * Get a cached language object for a given language code
 135          */
 136         static function factory( $code ) {
 137                 if ( !isset( self::$mLangObjCache[$code] ) ) {
 138                         self::$mLangObjCache[$code] = self::newFromCode( $code );
 139                 }
 140                 return self::$mLangObjCache[$code];
 141         }
 142
 143         /**
 144          * Create a language object for a given language code
 145          */
 146         protected static function newFromCode( $code ) {
 147                 global $IP;
 148                 static $recursionLevel = 0;
 149                 if ( $code == 'en' ) {
 150                         $class = 'Language';
 151                 } else {
 152                         $class = 'Language' . str_replace( '-', '_', ucfirst( $code ) );
 153                         // Preload base classes to work around APC/PHP5 bug
 154                         if ( file_exists( "$IP/languages/classes/$class.deps.php" ) ) {
 155                                 include_once("$IP/languages/classes/$class.deps.php");
 156                         }
 157                         if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
 158                                 include_once("$IP/languages/classes/$class.php");
 159                         }
 160                 }
 161
 162                 if ( $recursionLevel > 5 ) {
 163                         throw new MWException( "Language fallback loop detected when creating class $class\n" );
 164                 }
 165
 166                 if( ! class_exists( $class ) ) {
 167                         $fallback = Language::getFallbackFor( $code );
 168                         ++$recursionLevel;
 169                         $lang = Language::newFromCode( $fallback );
 170                         --$recursionLevel;
 171                         $lang->setCode( $code );
 172                 } else {
 173                         $lang = new $class;
 174                 }
 175                 return $lang;
 176         }
 177
 178         function __construct() {
 179                 $this->mConverter = new FakeConverter($this);
 180                 // Set the code to the name of the descendant
 181                 if ( get_class( $this ) == 'Language' ) {
 182                         $this->mCode = 'en';
 183                 } else {
 184                         $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
 185                 }
 186         }
 187
 188         /**
 189          * Reduce memory usage
 190          */
 191         function __destruct() {
 192                 foreach ( $this as $name => $value ) {
 193                         unset( $this->$name );
 194                 }
 195         }
 196
 197         /**
 198          * Hook which will be called if this is the content language.
 199          * Descendants can use this to register hook functions or modify globals
 200          */
 201         function initContLang() {}
 202
 203         /**
 204          * @deprecated Use User::getDefaultOptions()
 205          * @return array
 206          */
 207         function getDefaultUserOptions() {
 208                 wfDeprecated( __METHOD__ );
 209                 return User::getDefaultOptions();
 210         }
 211
 212         function getFallbackLanguageCode() {
 213                 return self::getFallbackFor( $this->mCode );
 214         }
 215
 216         /**
 217          * Exports $wgBookstoreListEn
 218          * @return array
 219          */
 220         function getBookstoreList() {
 221                 $this->load();
 222                 return $this->bookstoreList;
 223         }
 224
 225         /**
 226          * @return array
 227          */
 228         function getNamespaces() {
 229                 $this->load();
 230                 return $this->namespaceNames;
 231         }
 232
 233         /**
 234          * A convenience function that returns the same thing as
 235          * getNamespaces() except with the array values changed to ' '
 236          * where it found '_', useful for producing output to be displayed
 237          * e.g. in <select> forms.
 238          *
 239          * @return array
 240          */
 241         function getFormattedNamespaces() {
 242                 $ns = $this->getNamespaces();
 243                 foreach($ns as $k => $v) {
 244                         $ns[$k] = strtr($v, '_', ' ');
 245                 }
 246                 return $ns;
 247         }
 248
 249         /**
 250          * Get a namespace value by key
 251          * <code>
 252          * $mw_ns = $wgContLang->getNsText( NS_MEDIAWIKI );
 253          * echo $mw_ns; // prints 'MediaWiki'
 254          * </code>
 255          *
 256          * @param $index Int: the array key of the namespace to return
 257          * @return mixed, string if the namespace value exists, otherwise false
 258          */
 259         function getNsText( $index ) {
 260                 $ns = $this->getNamespaces();
 261                 return isset( $ns[$index] ) ? $ns[$index] : false;
 262         }
 263
 264         /**
 265          * A convenience function that returns the same thing as
 266          * getNsText() except with '_' changed to ' ', useful for
 267          * producing output.
 268          *
 269          * @return array
 270          */
 271         function getFormattedNsText( $index ) {
 272                 $ns = $this->getNsText( $index );
 273                 return strtr($ns, '_', ' ');
 274         }
 275
 276         /**
 277          * Get a namespace key by value, case insensitive.
 278          * Only matches namespace names for the current language, not the
 279          * canonical ones defined in Namespace.php.
 280          *
 281          * @param $text String
 282          * @return mixed An integer if $text is a valid value otherwise false
 283          */
 284         function getLocalNsIndex( $text ) {
 285                 $this->load();
 286                 $lctext = $this->lc($text);
 287                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 288         }
 289
 290         /**
 291          * Get a namespace key by value, case insensitive.  Canonical namespace
 292          * names override custom ones defined for the current language.
 293          *
 294          * @param $text String
 295          * @return mixed An integer if $text is a valid value otherwise false
 296          */
 297         function getNsIndex( $text ) {
 298                 $this->load();
 299                 $lctext = $this->lc($text);
 300                 if( ( $ns = MWNamespace::getCanonicalIndex( $lctext ) ) !== null ) return $ns;
 301                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 302         }
 303
 304         /**
 305          * short names for language variants used for language conversion links.
 306          *
 307          * @param $code String
 308          * @return string
 309          */
 310         function getVariantname( $code ) {
 311                 return $this->getMessageFromDB( "variantname-$code" );
 312         }
 313
 314         function specialPage( $name ) {
 315                 $aliases = $this->getSpecialPageAliases();
 316                 if ( isset( $aliases[$name][0] ) ) {
 317                         $name = $aliases[$name][0];
 318                 }
 319                 return $this->getNsText(NS_SPECIAL) . ':' . $name;
 320         }
 321
 322         function getQuickbarSettings() {
 323                 return array(
 324                         $this->getMessage( 'qbsettings-none' ),
 325                         $this->getMessage( 'qbsettings-fixedleft' ),
 326                         $this->getMessage( 'qbsettings-fixedright' ),
 327                         $this->getMessage( 'qbsettings-floatingleft' ),
 328                         $this->getMessage( 'qbsettings-floatingright' )
 329                 );
 330         }
 331
 332         function getSkinNames() {
 333                 $this->load();
 334                 return $this->skinNames;
 335         }
 336
 337         function getMathNames() {
 338                 $this->load();
 339                 return $this->mathNames;
 340         }
 341
 342         function getDatePreferences() {
 343                 $this->load();
 344                 return $this->datePreferences;
 345         }
 346
 347         function getDateFormats() {
 348                 $this->load();
 349                 return $this->dateFormats;
 350         }
 351
 352         function getDefaultDateFormat() {
 353                 $this->load();
 354                 return $this->defaultDateFormat;
 355         }
 356
 357         function getDatePreferenceMigrationMap() {
 358                 $this->load();
 359                 return $this->datePreferenceMigrationMap;
 360         }
 361
 362         function getImageFile( $image ) {
 363                 $this->load();
 364                 return $this->imageFiles[$image];
 365         }
 366
 367         function getDefaultUserOptionOverrides() {
 368                 $this->load();
 369                 # XXX - apparently some languageas get empty arrays, didn't get to it yet -- midom
 370                 if (is_array($this->defaultUserOptionOverrides)) {
 371                         return $this->defaultUserOptionOverrides;
 372                 } else {
 373                         return array();
 374                 }
 375         }
 376
 377         function getExtraUserToggles() {
 378                 $this->load();
 379                 return $this->extraUserToggles;
 380         }
 381
 382         function getUserToggle( $tog ) {
 383                 return $this->getMessageFromDB( "tog-$tog" );
 384         }
 385
 386         /**
 387          * Get language names, indexed by code.
 388          * If $customisedOnly is true, only returns codes with a messages file
 389          */
 390         public static function getLanguageNames( $customisedOnly = false ) {
 391                 global $wgLanguageNames, $wgExtraLanguageNames;
 392                 $allNames = $wgExtraLanguageNames + $wgLanguageNames;
 393                 if ( !$customisedOnly ) {
 394                         return $allNames;
 395                 }
 396
 397                 global $IP;
 398                 $names = array();
 399                 $dir = opendir( "$IP/languages/messages" );
 400                 while( false !== ( $file = readdir( $dir ) ) ) {
 401                         $m = array();
 402                         if( preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $file, $m ) ) {
 403                                 $code = str_replace( '_', '-', strtolower( $m[1] ) );
 404                                 if ( isset( $allNames[$code] ) ) {
 405                                         $names[$code] = $allNames[$code];
 406                                 }
 407                         }
 408                 }
 409                 closedir( $dir );
 410                 return $names;
 411         }
 412
 413         /**
 414          * Get a message from the MediaWiki namespace.
 415          *
 416          * @param $msg String: message name
 417          * @return string
 418          */
 419         function getMessageFromDB( $msg ) {
 420                 return wfMsgExt( $msg, array( 'parsemag', 'language' => $this ) );
 421         }
 422
 423         function getLanguageName( $code ) {
 424                 $names = self::getLanguageNames();
 425                 if ( !array_key_exists( $code, $names ) ) {
 426                         return '';
 427                 }
 428                 return $names[$code];
 429         }
 430
 431         function getMonthName( $key ) {
 432                 return $this->getMessageFromDB( self::$mMonthMsgs[$key-1] );
 433         }
 434
 435         function getMonthNameGen( $key ) {
 436                 return $this->getMessageFromDB( self::$mMonthGenMsgs[$key-1] );
 437         }
 438
 439         function getMonthAbbreviation( $key ) {
 440                 return $this->getMessageFromDB( self::$mMonthAbbrevMsgs[$key-1] );
 441         }
 442
 443         function getWeekdayName( $key ) {
 444                 return $this->getMessageFromDB( self::$mWeekdayMsgs[$key-1] );
 445         }
 446
 447         function getWeekdayAbbreviation( $key ) {
 448                 return $this->getMessageFromDB( self::$mWeekdayAbbrevMsgs[$key-1] );
 449         }
 450
 451         function getIranianCalendarMonthName( $key ) {
 452                 return $this->getMessageFromDB( self::$mIranianCalendarMonthMsgs[$key-1] );
 453         }
 454
 455         function getHebrewCalendarMonthName( $key ) {
 456                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthMsgs[$key-1] );
 457         }
 458
 459         function getHebrewCalendarMonthNameGen( $key ) {
 460                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthGenMsgs[$key-1] );
 461         }
 462
 463         function getHijriCalendarMonthName( $key ) {
 464                 return $this->getMessageFromDB( self::$mHijriCalendarMonthMsgs[$key-1] );
 465         }
 466
 467         /**
 468          * Used by date() and time() to adjust the time output.
 469          *
 470          * @param $ts Int the time in date('YmdHis') format
 471          * @param $tz Mixed: adjust the time by this amount (default false, mean we
 472          *            get user timecorrection setting)
 473          * @return int
 474          */
 475         function userAdjust( $ts, $tz = false ) {
 476                 global $wgUser, $wgLocalTZoffset;
 477
 478                 if (!$tz) {
 479                         $tz = $wgUser->getOption( 'timecorrection' );
 480                 }
 481
 482                 # minutes and hours differences:
 483                 $minDiff = 0;
 484                 $hrDiff  = 0;
 485
 486                 if ( $tz === '' ) {
 487                         # Global offset in minutes.
 488                         if( isset($wgLocalTZoffset) ) {
 489                                 if( $wgLocalTZoffset >= 0 ) {
 490                                         $hrDiff = floor($wgLocalTZoffset / 60);
 491                                 } else {
 492                                         $hrDiff = ceil($wgLocalTZoffset / 60);
 493                                 }
 494                                 $minDiff = $wgLocalTZoffset % 60;
 495                         }
 496                 } elseif ( strpos( $tz, ':' ) !== false ) {
 497                         $tzArray = explode( ':', $tz );
 498                         $hrDiff = intval($tzArray[0]);
 499                         $minDiff = intval($hrDiff < 0 ? -$tzArray[1] : $tzArray[1]);
 500                 } else {
 501                         $hrDiff = intval( $tz );
 502                 }
 503
 504                 # No difference ? Return time unchanged
 505                 if ( 0 == $hrDiff && 0 == $minDiff ) { return $ts; }
 506
 507                 wfSuppressWarnings(); // E_STRICT system time bitching
 508                 # Generate an adjusted date
 509                 $t = mktime( (
 510                   (int)substr( $ts, 8, 2) ) + $hrDiff, # Hours
 511                   (int)substr( $ts, 10, 2 ) + $minDiff, # Minutes
 512                   (int)substr( $ts, 12, 2 ), # Seconds
 513                   (int)substr( $ts, 4, 2 ), # Month
 514                   (int)substr( $ts, 6, 2 ), # Day
 515                   (int)substr( $ts, 0, 4 ) ); #Year
 516
 517                 $date = date( 'YmdHis', $t );
 518                 wfRestoreWarnings();
 519
 520                 return $date;
 521         }
 522
 523         /**
 524          * This is a workalike of PHP's date() function, but with better
 525          * internationalisation, a reduced set of format characters, and a better
 526          * escaping format.
 527          *
 528          * Supported format characters are dDjlNwzWFmMntLYyaAgGhHiscrU. See the
 529          * PHP manual for definitions. There are a number of extensions, which
 530          * start with "x":
 531          *
 532          *    xn   Do not translate digits of the next numeric format character
 533          *    xN   Toggle raw digit (xn) flag, stays set until explicitly unset
 534          *    xr   Use roman numerals for the next numeric format character
 535          *    xh   Use hebrew numerals for the next numeric format character
 536          *    xx   Literal x
 537          *    xg   Genitive month name
 538          *
 539          *    xij  j (day number) in Iranian calendar
 540          *    xiF  F (month name) in Iranian calendar
 541          *    xin  n (month number) in Iranian calendar
 542          *    xiY  Y (full year) in Iranian calendar
 543          *
 544          *    xjj  j (day number) in Hebrew calendar
 545          *    xjF  F (month name) in Hebrew calendar
 546          *    xjt  t (days in month) in Hebrew calendar
 547          *    xjx  xg (genitive month name) in Hebrew calendar
 548          *    xjn  n (month number) in Hebrew calendar
 549          *    xjY  Y (full year) in Hebrew calendar
 550          *
 551          *   xmj  j (day number) in Hijri calendar
 552          *   xmF  F (month name) in Hijri calendar
 553          *   xmn  n (month number) in Hijri calendar
 554          *   xmY  Y (full year) in Hijri calendar
 555          *
 556          *    xkY  Y (full year) in Thai solar calendar. Months and days are
 557          *                       identical to the Gregorian calendar
 558          *
 559          * Characters enclosed in double quotes will be considered literal (with
 560          * the quotes themselves removed). Unmatched quotes will be considered
 561          * literal quotes. Example:
 562          *
 563          * "The month is" F       => The month is January
 564          * i's"                   => 20'11"
 565          *
 566          * Backslash escaping is also supported.
 567          *
 568          * Input timestamp is assumed to be pre-normalized to the desired local
 569          * time zone, if any.
 570          *
 571          * @param $format String
 572          * @param $ts String: 14-character timestamp
 573          *      YYYYMMDDHHMMSS
 574          *      01234567890123
 575          */
 576         function sprintfDate( $format, $ts ) {
 577                 $s = '';
 578                 $raw = false;
 579                 $roman = false;
 580                 $hebrewNum = false;
 581                 $unix = false;
 582                 $rawToggle = false;
 583                 $iranian = false;
 584                 $hebrew = false;
 585                 $hijri = false;
 586                 $thai = false;
 587                 for ( $p = 0; $p < strlen( $format ); $p++ ) {
 588                         $num = false;
 589                         $code = $format[$p];
 590                         if ( $code == 'x' && $p < strlen( $format ) - 1 ) {
 591                                 $code .= $format[++$p];
 592                         }
 593
 594                         if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' ) && $p < strlen( $format ) - 1 ) {
 595                                 $code .= $format[++$p];
 596                         }
 597
 598                         switch ( $code ) {
 599                                 case 'xx':
 600                                         $s .= 'x';
 601                                         break;
 602                                 case 'xn':
 603                                         $raw = true;
 604                                         break;
 605                                 case 'xN':
 606                                         $rawToggle = !$rawToggle;
 607                                         break;
 608                                 case 'xr':
 609                                         $roman = true;
 610                                         break;
 611                                 case 'xh':
 612                                         $hebrewNum = true;
 613                                         break;
 614                                 case 'xg':
 615                                         $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
 616                                         break;
 617                                 case 'xjx':
 618                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 619                                         $s .= $this->getHebrewCalendarMonthNameGen( $hebrew[1] );
 620                                         break;
 621                                 case 'd':
 622                                         $num = substr( $ts, 6, 2 );
 623                                         break;
 624                                 case 'D':
 625                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 626                                         $s .= $this->getWeekdayAbbreviation( gmdate( 'w', $unix ) + 1 );
 627                                         break;
 628                                 case 'j':
 629                                         $num = intval( substr( $ts, 6, 2 ) );
 630                                         break;
 631                                 case 'xij':
 632                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 633                                         $num = $iranian[2];
 634                                         break;
 635                                 case 'xmj':
 636                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 637                                         $num = $hijri[2];
 638                                         break;
 639                                 case 'xjj':
 640                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 641                                         $num = $hebrew[2];
 642                                         break;
 643                                 case 'l':
 644                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 645                                         $s .= $this->getWeekdayName( gmdate( 'w', $unix ) + 1 );
 646                                         break;
 647                                 case 'N':
 648                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 649                                         $w = gmdate( 'w', $unix );
 650                                         $num = $w ? $w : 7;
 651                                         break;
 652                                 case 'w':
 653                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 654                                         $num = gmdate( 'w', $unix );
 655                                         break;
 656                                 case 'z':
 657                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 658                                         $num = gmdate( 'z', $unix );
 659                                         break;
 660                                 case 'W':
 661                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 662                                         $num = gmdate( 'W', $unix );
 663                                         break;
 664                                 case 'F':
 665                                         $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
 666                                         break;
 667                                 case 'xiF':
 668                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 669                                         $s .= $this->getIranianCalendarMonthName( $iranian[1] );
 670                                         break;
 671                                 case 'xmF':
 672                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 673                                         $s .= $this->getHijriCalendarMonthName( $hijri[1] );
 674                                         break;
 675                                 case 'xjF':
 676                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 677                                         $s .= $this->getHebrewCalendarMonthName( $hebrew[1] );
 678                                         break;
 679                                 case 'm':
 680                                         $num = substr( $ts, 4, 2 );
 681                                         break;
 682                                 case 'M':
 683                                         $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
 684                                         break;
 685                                 case 'n':
 686                                         $num = intval( substr( $ts, 4, 2 ) );
 687                                         break;
 688                                 case 'xin':
 689                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 690                                         $num = $iranian[1];
 691                                         break;
 692                                 case 'xmn':
 693                                         if ( !$hijri ) $hijri = self::tsToHijri ( $ts );
 694                                         $num = $hijri[1];
 695                                         break;
 696                                 case 'xjn':
 697                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 698                                         $num = $hebrew[1];
 699                                         break;
 700                                 case 't':
 701                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 702                                         $num = gmdate( 't', $unix );
 703                                         break;
 704                                 case 'xjt':
 705                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 706                                         $num = $hebrew[3];
 707                                         break;
 708                                 case 'L':
 709                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 710                                         $num = gmdate( 'L', $unix );
 711                                         break;
 712                                 case 'Y':
 713                                         $num = substr( $ts, 0, 4 );
 714                                         break;
 715                                 case 'xiY':
 716                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 717                                         $num = $iranian[0];
 718                                         break;
 719                                 case 'xmY':
 720                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 721                                         $num = $hijri[0];
 722                                         break;
 723                                 case 'xjY':
 724                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 725                                         $num = $hebrew[0];
 726                                         break;
 727                                 case 'xkY':
 728                                         if ( !$thai ) $thai = self::tsToThai( $ts );
 729                                         $num = $thai[0];
 730                                         break;
 731                                 case 'y':
 732                                         $num = substr( $ts, 2, 2 );
 733                                         break;
 734                                 case 'a':
 735                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'am' : 'pm';
 736                                         break;
 737                                 case 'A':
 738                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'AM' : 'PM';
 739                                         break;
 740                                 case 'g':
 741                                         $h = substr( $ts, 8, 2 );
 742                                         $num = $h % 12 ? $h % 12 : 12;
 743                                         break;
 744                                 case 'G':
 745                                         $num = intval( substr( $ts, 8, 2 ) );
 746                                         break;
 747                                 case 'h':
 748                                         $h = substr( $ts, 8, 2 );
 749                                         $num = sprintf( '%02d', $h % 12 ? $h % 12 : 12 );
 750                                         break;
 751                                 case 'H':
 752                                         $num = substr( $ts, 8, 2 );
 753                                         break;
 754                                 case 'i':
 755                                         $num = substr( $ts, 10, 2 );
 756                                         break;
 757                                 case 's':
 758                                         $num = substr( $ts, 12, 2 );
 759                                         break;
 760                                 case 'c':
 761                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 762                                         $s .= gmdate( 'c', $unix );
 763                                         break;
 764                                 case 'r':
 765                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 766                                         $s .= gmdate( 'r', $unix );
 767                                         break;
 768                                 case 'U':
 769                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 770                                         $num = $unix;
 771                                         break;
 772                                 case '\\':
 773                                         # Backslash escaping
 774                                         if ( $p < strlen( $format ) - 1 ) {
 775                                                 $s .= $format[++$p];
 776                                         } else {
 777                                                 $s .= '\\';
 778                                         }
 779                                         break;
 780                                 case '"':
 781                                         # Quoted literal
 782                                         if ( $p < strlen( $format ) - 1 ) {
 783                                                 $endQuote = strpos( $format, '"', $p + 1 );
 784                                                 if ( $endQuote === false ) {
 785                                                         # No terminating quote, assume literal "
 786                                                         $s .= '"';
 787                                                 } else {
 788                                                         $s .= substr( $format, $p + 1, $endQuote - $p - 1 );
 789                                                         $p = $endQuote;
 790                                                 }
 791                                         } else {
 792                                                 # Quote at end of string, assume literal "
 793                                                 $s .= '"';
 794                                         }
 795                                         break;
 796                                 default:
 797                                         $s .= $format[$p];
 798                         }
 799                         if ( $num !== false ) {
 800                                 if ( $rawToggle || $raw ) {
 801                                         $s .= $num;
 802                                         $raw = false;
 803                                 } elseif ( $roman ) {
 804                                         $s .= self::romanNumeral( $num );
 805                                         $roman = false;
 806                                 } elseif( $hebrewNum ) {
 807                                         $s .= self::hebrewNumeral( $num );
 808                                         $hebrewNum = false;
 809                                 } else {
 810                                         $s .= $this->formatNum( $num, true );
 811                                 }
 812                                 $num = false;
 813                         }
 814                 }
 815                 return $s;
 816         }
 817
 818         private static $GREG_DAYS = array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
 819         private static $IRANIAN_DAYS = array( 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29 );
 820         /**
 821          * Algorithm by Roozbeh Pournader and Mohammad Toossi to convert
 822          * Gregorian dates to Iranian dates. Originally written in C, it
 823          * is released under the terms of GNU Lesser General Public
 824          * License. Conversion to PHP was performed by Niklas Laxström.
 825          *
 826          * Link: http://www.farsiweb.info/jalali/jalali.c
 827          */
 828         private static function tsToIranian( $ts ) {
 829                 $gy = substr( $ts, 0, 4 ) -1600;
 830                 $gm = substr( $ts, 4, 2 ) -1;
 831                 $gd = substr( $ts, 6, 2 ) -1;
 832
 833                 # Days passed from the beginning (including leap years)
 834                 $gDayNo = 365*$gy
 835                         + floor(($gy+3) / 4)
 836                         - floor(($gy+99) / 100)
 837                         + floor(($gy+399) / 400);
 838
 839
 840                 // Add days of the past months of this year
 841                 for( $i = 0; $i < $gm; $i++ ) {
 842                         $gDayNo += self::$GREG_DAYS[$i];
 843                 }
 844
 845                 // Leap years
 846                 if ( $gm > 1 && (($gy%4===0 && $gy%100!==0 || ($gy%400==0)))) {
 847                         $gDayNo++;
 848                 }
 849
 850                 // Days passed in current month
 851                 $gDayNo += $gd;
 852
 853                 $jDayNo = $gDayNo - 79;
 854
 855                 $jNp = floor($jDayNo / 12053);
 856                 $jDayNo %= 12053;
 857
 858                 $jy = 979 + 33*$jNp + 4*floor($jDayNo/1461);
 859                 $jDayNo %= 1461;
 860
 861                 if ( $jDayNo >= 366 ) {
 862                         $jy += floor(($jDayNo-1)/365);
 863                         $jDayNo = floor(($jDayNo-1)%365);
 864                 }
 865
 866                 for ( $i = 0; $i < 11 && $jDayNo >= self::$IRANIAN_DAYS[$i]; $i++ ) {
 867                         $jDayNo -= self::$IRANIAN_DAYS[$i];
 868                 }
 869
 870                 $jm= $i+1;
 871                 $jd= $jDayNo+1;
 872
 873                 return array($jy, $jm, $jd);
 874         }
 875         /**
 876          * Converting Gregorian dates to Hijri dates.
 877          *
 878          * Based on a PHP-Nuke block by Sharjeel which is released under GNU/GPL license
 879          *
 880          * @link http://phpnuke.org/modules.php?name=News&file=article&sid=8234&mode=thread&order=0&thold=0
 881          */
 882         private static function tsToHijri ( $ts ) {
 883                 $year = substr( $ts, 0, 4 );
 884                 $month = substr( $ts, 4, 2 );
 885                 $day = substr( $ts, 6, 2 );
 886
 887                 $zyr = $year;
 888                 $zd=$day;
 889                 $zm=$month;
 890                 $zy=$zyr;
 891
 892
 893
 894                 if (($zy>1582)||(($zy==1582)&&($zm>10))||(($zy==1582)&&($zm==10)&&($zd>14)))
 895                         {
 896
 897
 898                                     $zjd=(int)((1461*($zy + 4800 + (int)( ($zm-14) /12) ))/4) + (int)((367*($zm-2-12*((int)(($zm-14)/12))))/12)-(int)((3*(int)(( ($zy+4900+(int)(($zm-14)/12))/100)))/4)+$zd-32075;
 899                                     }
 900                  else
 901                         {
 902                                     $zjd = 367*$zy-(int)((7*($zy+5001+(int)(($zm-9)/7)))/4)+(int)((275*$zm)/9)+$zd+1729777;
 903                         }
 904
 905                 $zl=$zjd-1948440+10632;
 906                 $zn=(int)(($zl-1)/10631);
 907                 $zl=$zl-10631*$zn+354;
 908                 $zj=((int)((10985-$zl)/5316))*((int)((50*$zl)/17719))+((int)($zl/5670))*((int)((43*$zl)/15238));
 909                 $zl=$zl-((int)((30-$zj)/15))*((int)((17719*$zj)/50))-((int)($zj/16))*((int)((15238*$zj)/43))+29;
 910                 $zm=(int)((24*$zl)/709);
 911                 $zd=$zl-(int)((709*$zm)/24);
 912                 $zy=30*$zn+$zj-30;
 913
 914                 return array ($zy, $zm, $zd);
 915         }
 916
 917         /**
 918          * Converting Gregorian dates to Hebrew dates.
 919          *
 920          * Based on a JavaScript code by Abu Mami and Yisrael Hersch
 921          * (abu-mami@kaluach.net, http://www.kaluach.net), who permitted
 922          * to translate the relevant functions into PHP and release them under
 923          * GNU GPL.
 924          *
 925          * The months are counted from Tishrei = 1. In a leap year, Adar I is 13
 926          * and Adar II is 14. In a non-leap year, Adar is 6.
 927          */
 928         private static function tsToHebrew( $ts ) {
 929                 # Parse date
 930                 $year = substr( $ts, 0, 4 );
 931                 $month = substr( $ts, 4, 2 );
 932                 $day = substr( $ts, 6, 2 );
 933
 934                 # Calculate Hebrew year
 935                 $hebrewYear = $year + 3760;
 936
 937                 # Month number when September = 1, August = 12
 938                 $month += 4;
 939                 if( $month > 12 ) {
 940                         # Next year
 941                         $month -= 12;
 942                         $year++;
 943                         $hebrewYear++;
 944                 }
 945
 946                 # Calculate day of year from 1 September
 947                 $dayOfYear = $day;
 948                 for( $i = 1; $i < $month; $i++ ) {
 949                         if( $i == 6 ) {
 950                                 # February
 951                                 $dayOfYear += 28;
 952                                 # Check if the year is leap
 953                                 if( $year % 400 == 0 || ( $year % 4 == 0 && $year % 100 > 0 ) ) {
 954                                         $dayOfYear++;
 955                                 }
 956                         } elseif( $i == 8 || $i == 10 || $i == 1 || $i == 3 ) {
 957                                 $dayOfYear += 30;
 958                         } else {
 959                                 $dayOfYear += 31;
 960                         }
 961                 }
 962
 963                 # Calculate the start of the Hebrew year
 964                 $start = self::hebrewYearStart( $hebrewYear );
 965
 966                 # Calculate next year's start
 967                 if( $dayOfYear <= $start ) {
 968                         # Day is before the start of the year - it is the previous year
 969                         # Next year's start
 970                         $nextStart = $start;
 971                         # Previous year
 972                         $year--;
 973                         $hebrewYear--;
 974                         # Add days since previous year's 1 September
 975                         $dayOfYear += 365;
 976                         if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
 977                                 # Leap year
 978                                 $dayOfYear++;
 979                         }
 980                         # Start of the new (previous) year
 981                         $start = self::hebrewYearStart( $hebrewYear );
 982                 } else {
 983                         # Next year's start
 984                         $nextStart = self::hebrewYearStart( $hebrewYear + 1 );
 985                 }
 986
 987                 # Calculate Hebrew day of year
 988                 $hebrewDayOfYear = $dayOfYear - $start;
 989
 990                 # Difference between year's days
 991                 $diff = $nextStart - $start;
 992                 # Add 12 (or 13 for leap years) days to ignore the difference between
 993                 # Hebrew and Gregorian year (353 at least vs. 365/6) - now the
 994                 # difference is only about the year type
 995                 if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
 996                         $diff += 13;
 997                 } else {
 998                         $diff += 12;
 999                 }
1000
1001                 # Check the year pattern, and is leap year
1002                 # 0 means an incomplete year, 1 means a regular year, 2 means a complete year
1003                 # This is mod 30, to work on both leap years (which add 30 days of Adar I)
1004                 # and non-leap years
1005                 $yearPattern = $diff % 30;
1006                 # Check if leap year
1007                 $isLeap = $diff >= 30;
1008
1009                 # Calculate day in the month from number of day in the Hebrew year
1010                 # Don't check Adar - if the day is not in Adar, we will stop before;
1011                 # if it is in Adar, we will use it to check if it is Adar I or Adar II
1012                 $hebrewDay = $hebrewDayOfYear;
1013                 $hebrewMonth = 1;
1014                 $days = 0;
1015                 while( $hebrewMonth <= 12 ) {
1016                         # Calculate days in this month
1017                         if( $isLeap && $hebrewMonth == 6 ) {
1018                                 # Adar in a leap year
1019                                 if( $isLeap ) {
1020                                         # Leap year - has Adar I, with 30 days, and Adar II, with 29 days
1021                                         $days = 30;
1022                                         if( $hebrewDay <= $days ) {
1023                                                 # Day in Adar I
1024                                                 $hebrewMonth = 13;
1025                                         } else {
1026                                                 # Subtract the days of Adar I
1027                                                 $hebrewDay -= $days;
1028                                                 # Try Adar II
1029                                                 $days = 29;
1030                                                 if( $hebrewDay <= $days ) {
1031                                                         # Day in Adar II
1032                                                         $hebrewMonth = 14;
1033                                                 }
1034                                         }
1035                                 }
1036                         } elseif( $hebrewMonth == 2 && $yearPattern == 2 ) {
1037                                 # Cheshvan in a complete year (otherwise as the rule below)
1038                                 $days = 30;
1039                         } elseif( $hebrewMonth == 3 && $yearPattern == 0 ) {
1040                                 # Kislev in an incomplete year (otherwise as the rule below)
1041                                 $days = 29;
1042                         } else {
1043                                 # Odd months have 30 days, even have 29
1044                                 $days = 30 - ( $hebrewMonth - 1 ) % 2;
1045                         }
1046                         if( $hebrewDay <= $days ) {
1047                                 # In the current month
1048                                 break;
1049                         } else {
1050                                 # Subtract the days of the current month
1051                                 $hebrewDay -= $days;
1052                                 # Try in the next month
1053                                 $hebrewMonth++;
1054                         }
1055                 }
1056
1057                 return array( $hebrewYear, $hebrewMonth, $hebrewDay, $days );
1058         }
1059
1060         /**
1061          * This calculates the Hebrew year start, as days since 1 September.
1062          * Based on Carl Friedrich Gauss algorithm for finding Easter date.
1063          * Used for Hebrew date.
1064          */
1065         private static function hebrewYearStart( $year ) {
1066                 $a = intval( ( 12 * ( $year - 1 ) + 17 ) % 19 );
1067                 $b = intval( ( $year - 1 ) % 4 );
1068                 $m = 32.044093161144 + 1.5542417966212 * $a +  $b / 4.0 - 0.0031777940220923 * ( $year - 1 );
1069                 if( $m < 0 ) {
1070                         $m--;
1071                 }
1072                 $Mar = intval( $m );
1073                 if( $m < 0 ) {
1074                         $m++;
1075                 }
1076                 $m -= $Mar;
1077
1078                 $c = intval( ( $Mar + 3 * ( $year - 1 ) + 5 * $b + 5 ) % 7);
1079                 if( $c == 0 && $a > 11 && $m >= 0.89772376543210 ) {
1080                         $Mar++;
1081                 } else if( $c == 1 && $a > 6 && $m >= 0.63287037037037 ) {
1082                         $Mar += 2;
1083                 } else if( $c == 2 || $c == 4 || $c == 6 ) {
1084                         $Mar++;
1085                 }
1086
1087                 $Mar += intval( ( $year - 3761 ) / 100 ) - intval( ( $year - 3761 ) / 400 ) - 24;
1088                 return $Mar;
1089         }
1090
1091         /**
1092          * Algorithm to convert Gregorian dates to Thai solar dates.
1093          *
1094          * Link: http://en.wikipedia.org/wiki/Thai_solar_calendar
1095          *
1096          * @param $ts String: 14-character timestamp
1097          * @return array converted year, month, day
1098          */
1099         private static function tsToThai( $ts ) {
1100                 $gy = substr( $ts, 0, 4 );
1101                 $gm = substr( $ts, 4, 2 );
1102                 $gd = substr( $ts, 6, 2 );
1103
1104                 # Add 543 years to the Gregorian calendar
1105                 # Months and days are identical
1106                 $gy_thai = $gy + 543;
1107
1108                 return array( $gy_thai, $gm, $gd );
1109         }
1110
1111
1112         /**
1113          * Roman number formatting up to 3000
1114          */
1115         static function romanNumeral( $num ) {
1116                 static $table = array(
1117                         array( '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X' ),
1118                         array( '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', 'C' ),
1119                         array( '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM', 'M' ),
1120                         array( '', 'M', 'MM', 'MMM' )
1121                 );
1122
1123                 $num = intval( $num );
1124                 if ( $num > 3000 || $num <= 0 ) {
1125                         return $num;
1126                 }
1127
1128                 $s = '';
1129                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1130                         if ( $num >= $pow10 ) {
1131                                 $s .= $table[$i][floor($num / $pow10)];
1132                         }
1133                         $num = $num % $pow10;
1134                 }
1135                 return $s;
1136         }
1137
1138         /**
1139          * Hebrew Gematria number formatting up to 9999
1140          */
1141         static function hebrewNumeral( $num ) {
1142                 static $table = array(
1143                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' ),
1144                         array( '', 'י', 'כ', 'ל', 'מ', 'נ', 'ס', 'ע', 'פ', 'צ', 'ק' ),
1145                         array( '', 'ק', 'ר', 'ש', 'ת', 'תק', 'תר', 'תש', 'תת', 'תתק', 'תתר' ),
1146                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' )
1147                 );
1148
1149                 $num = intval( $num );
1150                 if ( $num > 9999 || $num <= 0 ) {
1151                         return $num;
1152                 }
1153
1154                 $s = '';
1155                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1156                         if ( $num >= $pow10 ) {
1157                                 if ( $num == 15 || $num == 16 ) {
1158                                         $s .= $table[0][9] . $table[0][$num - 9];
1159                                         $num = 0;
1160                                 } else {
1161                                         $s .= $table[$i][intval( ( $num / $pow10 ) )];
1162                                         if( $pow10 == 1000 ) {
1163                                                 $s .= "'";
1164                                         }
1165                                 }
1166                         }
1167                         $num = $num % $pow10;
1168                 }
1169                 if( strlen( $s ) == 2 ) {
1170                         $str = $s . "'";
1171                 } else  {
1172                         $str = substr( $s, 0, strlen( $s ) - 2 ) . '"';
1173                         $str .= substr( $s, strlen( $s ) - 2, 2 );
1174                 }
1175                 $start = substr( $str, 0, strlen( $str ) - 2 );
1176                 $end = substr( $str, strlen( $str ) - 2 );
1177                 switch( $end ) {
1178                         case 'כ':
1179                                 $str = $start . 'ך';
1180                                 break;
1181                         case 'מ':
1182                                 $str = $start . 'ם';
1183                                 break;
1184                         case 'נ':
1185                                 $str = $start . 'ן';
1186                                 break;
1187                         case 'פ':
1188                                 $str = $start . 'ף';
1189                                 break;
1190                         case 'צ':
1191                                 $str = $start . 'ץ';
1192                                 break;
1193                 }
1194                 return $str;
1195         }
1196
1197         /**
1198          * This is meant to be used by time(), date(), and timeanddate() to get
1199          * the date preference they're supposed to use, it should be used in
1200          * all children.
1201          *
1202          *<code>
1203          * function timeanddate([...], $format = true) {
1204          *      $datePreference = $this->dateFormat($format);
1205          * [...]
1206          * }
1207          *</code>
1208          *
1209          * @param $usePrefs Mixed: if true, the user's preference is used
1210          *                         if false, the site/language default is used
1211          *                         if int/string, assumed to be a format.
1212          * @return string
1213          */
1214         function dateFormat( $usePrefs = true ) {
1215                 global $wgUser;
1216
1217                 if( is_bool( $usePrefs ) ) {
1218                         if( $usePrefs ) {
1219                                 $datePreference = $wgUser->getDatePreference();
1220                         } else {
1221                                 $options = User::getDefaultOptions();
1222                                 $datePreference = (string)$options['date'];
1223                         }
1224                 } else {
1225                         $datePreference = (string)$usePrefs;
1226                 }
1227
1228                 // return int
1229                 if( $datePreference == '' ) {
1230                         return 'default';
1231                 }
1232
1233                 return $datePreference;
1234         }
1235
1236         /**
1237          * @param $ts Mixed: the time format which needs to be turned into a
1238          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1239          * @param $adj Bool: whether to adjust the time output according to the
1240          *             user configured offset ($timecorrection)
1241          * @param $format Mixed: true to use user's date format preference
1242          * @param $timecorrection String: the time offset as returned by
1243          *                        validateTimeZone() in Special:Preferences
1244          * @return string
1245          */
1246         function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
1247                 $this->load();
1248                 if ( $adj ) {
1249                         $ts = $this->userAdjust( $ts, $timecorrection );
1250                 }
1251
1252                 $pref = $this->dateFormat( $format );
1253                 if( $pref == 'default' || !isset( $this->dateFormats["$pref date"] ) ) {
1254                         $pref = $this->defaultDateFormat;
1255                 }
1256                 return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
1257         }
1258
1259         /**
1260          * @param $ts Mixed: the time format which needs to be turned into a
1261          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1262          * @param $adj Bool: whether to adjust the time output according to the
1263          *             user configured offset ($timecorrection)
1264          * @param $format Mixed: true to use user's date format preference
1265          * @param $timecorrection String: the time offset as returned by
1266          *                        validateTimeZone() in Special:Preferences
1267          * @return string
1268          */
1269         function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
1270                 $this->load();
1271                 if ( $adj ) {
1272                         $ts = $this->userAdjust( $ts, $timecorrection );
1273                 }
1274
1275                 $pref = $this->dateFormat( $format );
1276                 if( $pref == 'default' || !isset( $this->dateFormats["$pref time"] ) ) {
1277                         $pref = $this->defaultDateFormat;
1278                 }
1279                 return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
1280         }
1281
1282         /**
1283          * @param $ts Mixed: the time format which needs to be turned into a
1284          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1285          * @param $adj Bool: whether to adjust the time output according to the
1286          *             user configured offset ($timecorrection)
1287          * @param $format Mixed: what format to return, if it's false output the
1288          *                default one (default true)
1289          * @param $timecorrection String: the time offset as returned by
1290          *                        validateTimeZone() in Special:Preferences
1291          * @return string
1292          */
1293         function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false) {
1294                 $this->load();
1295
1296                 $ts = wfTimestamp( TS_MW, $ts );
1297
1298                 if ( $adj ) {
1299                         $ts = $this->userAdjust( $ts, $timecorrection );
1300                 }
1301
1302                 $pref = $this->dateFormat( $format );
1303                 if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
1304                         $pref = $this->defaultDateFormat;
1305                 }
1306
1307                 return $this->sprintfDate( $this->dateFormats["$pref both"], $ts );
1308         }
1309
1310         function getMessage( $key ) {
1311                 $this->load();
1312                 return isset( $this->messages[$key] ) ? $this->messages[$key] : null;
1313         }
1314
1315         function getAllMessages() {
1316                 $this->load();
1317                 return $this->messages;
1318         }
1319
1320         function iconv( $in, $out, $string ) {
1321                 # For most languages, this is a wrapper for iconv
1322                 return iconv( $in, $out . '//IGNORE', $string );
1323         }
1324
1325         // callback functions for uc(), lc(), ucwords(), ucwordbreaks()
1326         function ucwordbreaksCallbackAscii($matches){
1327                 return $this->ucfirst($matches[1]);
1328         }
1329
1330         function ucwordbreaksCallbackMB($matches){
1331                 return mb_strtoupper($matches[0]);
1332         }
1333
1334         function ucCallback($matches){
1335                 list( $wikiUpperChars ) = self::getCaseMaps();
1336                 return strtr( $matches[1], $wikiUpperChars );
1337         }
1338
1339         function lcCallback($matches){
1340                 list( , $wikiLowerChars ) = self::getCaseMaps();
1341                 return strtr( $matches[1], $wikiLowerChars );
1342         }
1343
1344         function ucwordsCallbackMB($matches){
1345                 return mb_strtoupper($matches[0]);
1346         }
1347
1348         function ucwordsCallbackWiki($matches){
1349                 list( $wikiUpperChars ) = self::getCaseMaps();
1350                 return strtr( $matches[0], $wikiUpperChars );
1351         }
1352
1353         function ucfirst( $str ) {
1354                 if ( empty($str) ) return $str;
1355                 if ( ord($str[0]) < 128 ) return ucfirst($str);
1356                 else return self::uc($str,true); // fall back to more complex logic in case of multibyte strings
1357         }
1358
1359         function uc( $str, $first = false ) {
1360                 if ( function_exists( 'mb_strtoupper' ) ) {
1361                         if ( $first ) {
1362                                 if ( self::isMultibyte( $str ) ) {
1363                                         return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1364                                 } else {
1365                                         return ucfirst( $str );
1366                                 }
1367                         } else {
1368                                 return self::isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
1369                         }
1370                 } else {
1371                         if ( self::isMultibyte( $str ) ) {
1372                                 list( $wikiUpperChars ) = $this->getCaseMaps();
1373                                 $x = $first ? '^' : '';
1374                                 return preg_replace_callback(
1375                                         "/$x([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1376                                         array($this,"ucCallback"),
1377                                         $str
1378                                 );
1379                         } else {
1380                                 return $first ? ucfirst( $str ) : strtoupper( $str );
1381                         }
1382                 }
1383         }
1384
1385         function lcfirst( $str ) {
1386                 if ( empty($str) ) return $str;
1387                 if ( is_string( $str ) && ord($str[0]) < 128 ) {
1388                         // editing string in place = cool
1389                         $str[0]=strtolower($str[0]);
1390                         return $str;
1391                 }
1392                 else return self::lc( $str, true );
1393         }
1394
1395         function lc( $str, $first = false ) {
1396                 if ( function_exists( 'mb_strtolower' ) )
1397                         if ( $first )
1398                                 if ( self::isMultibyte( $str ) )
1399                                         return mb_strtolower( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1400                                 else
1401                                         return strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 );
1402                         else
1403                                 return self::isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
1404                 else
1405                         if ( self::isMultibyte( $str ) ) {
1406                                 list( , $wikiLowerChars ) = self::getCaseMaps();
1407                                 $x = $first ? '^' : '';
1408                                 return preg_replace_callback(
1409                                         "/$x([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1410                                         array($this,"lcCallback"),
1411                                         $str
1412                                 );
1413                         } else
1414                                 return $first ? strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 ) : strtolower( $str );
1415         }
1416
1417         function isMultibyte( $str ) {
1418                 return (bool)preg_match( '/[\x80-\xff]/', $str );
1419         }
1420
1421         function ucwords($str) {
1422                 if ( self::isMultibyte( $str ) ) {
1423                         $str = self::lc($str);
1424
1425                         // regexp to find first letter in each word (i.e. after each space)
1426                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)| ([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1427
1428                         // function to use to capitalize a single char
1429                         if ( function_exists( 'mb_strtoupper' ) )
1430                                 return preg_replace_callback(
1431                                         $replaceRegexp,
1432                                         array($this,"ucwordsCallbackMB"),
1433                                         $str
1434                                 );
1435                         else
1436                                 return preg_replace_callback(
1437                                         $replaceRegexp,
1438                                         array($this,"ucwordsCallbackWiki"),
1439                                         $str
1440                                 );
1441                 }
1442                 else
1443                         return ucwords( strtolower( $str ) );
1444         }
1445
1446   # capitalize words at word breaks
1447         function ucwordbreaks($str){
1448                 if (self::isMultibyte( $str ) ) {
1449                         $str = self::lc($str);
1450
1451                         // since \b doesn't work for UTF-8, we explicitely define word break chars
1452                         $breaks= "[ \-\(\)\}\{\.,\?!]";
1453
1454                         // find first letter after word break
1455                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)|$breaks([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1456
1457                         if ( function_exists( 'mb_strtoupper' ) )
1458                                 return preg_replace_callback(
1459                                         $replaceRegexp,
1460                                         array($this,"ucwordbreaksCallbackMB"),
1461                                         $str
1462                                 );
1463                         else
1464                                 return preg_replace_callback(
1465                                         $replaceRegexp,
1466                                         array($this,"ucwordsCallbackWiki"),
1467                                         $str
1468                                 );
1469                 }
1470                 else
1471                         return preg_replace_callback(
1472                         '/\b([\w\x80-\xff]+)\b/',
1473                         array($this,"ucwordbreaksCallbackAscii"),
1474                         $str );
1475         }
1476
1477         /**
1478          * Return a case-folded representation of $s
1479          *
1480          * This is a representation such that caseFold($s1)==caseFold($s2) if $s1
1481          * and $s2 are the same except for the case of their characters. It is not
1482          * necessary for the value returned to make sense when displayed.
1483          *
1484          * Do *not* perform any other normalisation in this function. If a caller
1485          * uses this function when it should be using a more general normalisation
1486          * function, then fix the caller.
1487          */
1488         function caseFold( $s ) {
1489                 return $this->uc( $s );
1490         }
1491
1492         function checkTitleEncoding( $s ) {
1493                 if( is_array( $s ) ) {
1494                         wfDebugDieBacktrace( 'Given array to checkTitleEncoding.' );
1495                 }
1496                 # Check for non-UTF-8 URLs
1497                 $ishigh = preg_match( '/[\x80-\xff]/', $s);
1498                 if(!$ishigh) return $s;
1499
1500                 $isutf8 = preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1501                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})+$/', $s );
1502                 if( $isutf8 ) return $s;
1503
1504                 return $this->iconv( $this->fallback8bitEncoding(), "utf-8", $s );
1505         }
1506
1507         function fallback8bitEncoding() {
1508                 $this->load();
1509                 return $this->fallback8bitEncoding;
1510         }
1511
1512         /**
1513          * Some languages have special punctuation to strip out
1514          * or characters which need to be converted for MySQL's
1515          * indexing to grok it correctly. Make such changes here.
1516          *
1517          * @param $string String
1518          * @return String
1519          */
1520         function stripForSearch( $string ) {
1521                 global $wgDBtype;
1522                 if ( $wgDBtype != 'mysql' ) {
1523                         return $string;
1524                 }
1525
1526                 # MySQL fulltext index doesn't grok utf-8, so we
1527                 # need to fold cases and convert to hex
1528
1529                 wfProfileIn( __METHOD__ );
1530                 if( function_exists( 'mb_strtolower' ) ) {
1531                         $out = preg_replace(
1532                                 "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
1533                                 "'U8' . bin2hex( \"$1\" )",
1534                                 mb_strtolower( $string ) );
1535                 } else {
1536                         list( , $wikiLowerChars ) = self::getCaseMaps();
1537                         $out = preg_replace(
1538                                 "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
1539                                 "'U8' . bin2hex( strtr( \"\$1\", \$wikiLowerChars ) )",
1540                                 $string );
1541                 }
1542                 wfProfileOut( __METHOD__ );
1543                 return $out;
1544         }
1545
1546         function convertForSearchResult( $termsArray ) {
1547                 # some languages, e.g. Chinese, need to do a conversion
1548                 # in order for search results to be displayed correctly
1549                 return $termsArray;
1550         }
1551
1552         /**
1553          * Get the first character of a string.
1554          *
1555          * @param $s string
1556          * @return string
1557          */
1558         function firstChar( $s ) {
1559                 $matches = array();
1560                 preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1561                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})/', $s, $matches);
1562
1563                 if ( isset( $matches[1] ) ) {
1564                         if ( strlen( $matches[1] ) != 3 ) {
1565                                 return $matches[1];
1566                         }
1567
1568                         // Break down Hangul syllables to grab the first jamo
1569                         $code = utf8ToCodepoint( $matches[1] );
1570                         if ( $code < 0xac00 || 0xd7a4 <= $code) {
1571                                 return $matches[1];
1572                         } elseif ( $code < 0xb098 ) {
1573                                 return "\xe3\x84\xb1";
1574                         } elseif ( $code < 0xb2e4 ) {
1575                                 return "\xe3\x84\xb4";
1576                         } elseif ( $code < 0xb77c ) {
1577                                 return "\xe3\x84\xb7";
1578                         } elseif ( $code < 0xb9c8 ) {
1579                                 return "\xe3\x84\xb9";
1580                         } elseif ( $code < 0xbc14 ) {
1581                                 return "\xe3\x85\x81";
1582                         } elseif ( $code < 0xc0ac ) {
1583                                 return "\xe3\x85\x82";
1584                         } elseif ( $code < 0xc544 ) {
1585                                 return "\xe3\x85\x85";
1586                         } elseif ( $code < 0xc790 ) {
1587                                 return "\xe3\x85\x87";
1588                         } elseif ( $code < 0xcc28 ) {
1589                                 return "\xe3\x85\x88";
1590                         } elseif ( $code < 0xce74 ) {
1591                                 return "\xe3\x85\x8a";
1592                         } elseif ( $code < 0xd0c0 ) {
1593                                 return "\xe3\x85\x8b";
1594                         } elseif ( $code < 0xd30c ) {
1595                                 return "\xe3\x85\x8c";
1596                         } elseif ( $code < 0xd558 ) {
1597                                 return "\xe3\x85\x8d";
1598                         } else {
1599                                 return "\xe3\x85\x8e";
1600                         }
1601                 } else {
1602                         return "";
1603                 }
1604         }
1605
1606         function initEncoding() {
1607                 # Some languages may have an alternate char encoding option
1608                 # (Esperanto X-coding, Japanese furigana conversion, etc)
1609                 # If this language is used as the primary content language,
1610                 # an override to the defaults can be set here on startup.
1611         }
1612
1613         function recodeForEdit( $s ) {
1614                 # For some languages we'll want to explicitly specify
1615                 # which characters make it into the edit box raw
1616                 # or are converted in some way or another.
1617                 # Note that if wgOutputEncoding is different from
1618                 # wgInputEncoding, this text will be further converted
1619                 # to wgOutputEncoding.
1620                 global $wgEditEncoding;
1621                 if( $wgEditEncoding == '' or
1622                   $wgEditEncoding == 'UTF-8' ) {
1623                         return $s;
1624                 } else {
1625                         return $this->iconv( 'UTF-8', $wgEditEncoding, $s );
1626                 }
1627         }
1628
1629         function recodeInput( $s ) {
1630                 # Take the previous into account.
1631                 global $wgEditEncoding;
1632                 if($wgEditEncoding != "") {
1633                         $enc = $wgEditEncoding;
1634                 } else {
1635                         $enc = 'UTF-8';
1636                 }
1637                 if( $enc == 'UTF-8' ) {
1638                         return $s;
1639                 } else {
1640                         return $this->iconv( $enc, 'UTF-8', $s );
1641                 }
1642         }
1643
1644         /**
1645          * For right-to-left language support
1646          *
1647          * @return bool
1648          */
1649         function isRTL() {
1650                 $this->load();
1651                 return $this->rtl;
1652         }
1653
1654         /**
1655          * A hidden direction mark (LRM or RLM), depending on the language direction
1656          *
1657          * @return string
1658          */
1659         function getDirMark() {
1660                 return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
1661         }
1662
1663         /**
1664          * An arrow, depending on the language direction
1665          *
1666          * @return string
1667          */
1668         function getArrow() {
1669                 return $this->isRTL() ? '←' : '→';
1670         }
1671
1672         /**
1673          * To allow "foo[[bar]]" to extend the link over the whole word "foobar"
1674          *
1675          * @return bool
1676          */
1677         function linkPrefixExtension() {
1678                 $this->load();
1679                 return $this->linkPrefixExtension;
1680         }
1681
1682         function &getMagicWords() {
1683                 $this->load();
1684                 return $this->magicWords;
1685         }
1686
1687         # Fill a MagicWord object with data from here
1688         function getMagic( &$mw ) {
1689                 if ( !$this->mMagicHookDone ) {
1690                         $this->mMagicHookDone = true;
1691                         wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
1692                 }
1693                 if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
1694                         $rawEntry = $this->mMagicExtensions[$mw->mId];
1695                 } else {
1696                         $magicWords =& $this->getMagicWords();
1697                         if ( isset( $magicWords[$mw->mId] ) ) {
1698                                 $rawEntry = $magicWords[$mw->mId];
1699                         } else {
1700                                 # Fall back to English if local list is incomplete
1701                                 $magicWords =& Language::getMagicWords();
1702                                 if ( !isset($magicWords[$mw->mId]) ) {
1703                                         throw new MWException("Magic word '{$mw->mId}' not found" );
1704                                 }
1705                                 $rawEntry = $magicWords[$mw->mId];
1706                         }
1707                 }
1708
1709                 if( !is_array( $rawEntry ) ) {
1710                         error_log( "\"$rawEntry\" is not a valid magic thingie for \"$mw->mId\"" );
1711                 } else {
1712                         $mw->mCaseSensitive = $rawEntry[0];
1713                         $mw->mSynonyms = array_slice( $rawEntry, 1 );
1714                 }
1715         }
1716
1717         /**
1718          * Add magic words to the extension array
1719          */
1720         function addMagicWordsByLang( $newWords ) {
1721                 $code = $this->getCode();
1722                 $fallbackChain = array();
1723                 while ( $code && !in_array( $code, $fallbackChain ) ) {
1724                         $fallbackChain[] = $code;
1725                         $code = self::getFallbackFor( $code );
1726                 }
1727                 if ( !in_array( 'en', $fallbackChain ) ) {
1728                         $fallbackChain[] = 'en';
1729                 }
1730                 $fallbackChain = array_reverse( $fallbackChain );
1731                 foreach ( $fallbackChain as $code ) {
1732                         if ( isset( $newWords[$code] ) ) {
1733                                 $this->mMagicExtensions = $newWords[$code] + $this->mMagicExtensions;
1734                         }
1735                 }
1736         }
1737
1738         /**
1739          * Get special page names, as an associative array
1740          *   case folded alias => real name
1741          */
1742         function getSpecialPageAliases() {
1743                 $this->load();
1744
1745                 // Cache aliases because it may be slow to load them
1746                 if ( !isset( $this->mExtendedSpecialPageAliases ) ) {
1747
1748                         // Initialise array
1749                         $this->mExtendedSpecialPageAliases = $this->specialPageAliases;
1750
1751                         global $wgExtensionAliasesFiles;
1752                         foreach ( $wgExtensionAliasesFiles as $file ) {
1753
1754                                 // Fail fast
1755                                 if ( !file_exists($file) )
1756                                         throw new MWException( "Aliases file does not exist: $file" );
1757
1758                                 $aliases = array();
1759                                 require($file);
1760
1761                                 // Check the availability of aliases
1762                                 if ( !isset($aliases['en']) )
1763                                         throw new MWException( "Malformed aliases file: $file" );
1764
1765                                 // Merge all aliases in fallback chain
1766                                 $code = $this->getCode();
1767                                 do {
1768                                         if ( !isset($aliases[$code]) ) continue;
1769
1770                                         $aliases[$code] = $this->fixSpecialPageAliases( $aliases[$code] );
1771                                         /* Merge the aliases, THIS will break if there is special page name
1772                                         * which looks like a numerical key, thanks to PHP...
1773                                         * See the array_merge_recursive manual entry */
1774                                         $this->mExtendedSpecialPageAliases = array_merge_recursive(
1775                                                 $this->mExtendedSpecialPageAliases, $aliases[$code] );
1776
1777                                 } while ( $code = self::getFallbackFor( $code ) );
1778                         }
1779
1780                         wfRunHooks( 'LanguageGetSpecialPageAliases',
1781                                 array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
1782                 }
1783
1784                 return $this->mExtendedSpecialPageAliases;
1785         }
1786
1787         /**
1788          * Function to fix special page aliases. Will convert the first letter to
1789          * upper case and spaces to underscores. Can be given a full aliases array,
1790          * in which case it will recursively fix all aliases.
1791          */
1792         public function fixSpecialPageAliases( $mixed ) {
1793                 // Work recursively until in string level
1794                 if ( is_array($mixed) ) {
1795                         $callback = array( $this, 'fixSpecialPageAliases' );
1796                         return array_map( $callback, $mixed );
1797                 }
1798                 return str_replace( ' ', '_', $this->ucfirst( $mixed ) );
1799         }
1800
1801         /**
1802          * Italic is unsuitable for some languages
1803          *
1804          * @param $text String: the text to be emphasized.
1805          * @return string
1806          */
1807         function emphasize( $text ) {
1808                 return "<em>$text</em>";
1809         }
1810
1811          /**
1812           * Normally we output all numbers in plain en_US style, that is
1813           * 293,291.235 for twohundredninetythreethousand-twohundredninetyone
1814           * point twohundredthirtyfive. However this is not sutable for all
1815           * languages, some such as Pakaran want ੨੯੩,੨੯੫.੨੩੫ and others such as
1816           * Icelandic just want to use commas instead of dots, and dots instead
1817           * of commas like "293.291,235".
1818           *
1819           * An example of this function being called:
1820           * <code>
1821           * wfMsg( 'message', $wgLang->formatNum( $num ) )
1822           * </code>
1823           *
1824           * See LanguageGu.php for the Gujarati implementation and
1825           * $separatorTransformTable on MessageIs.php for
1826           * the , => . and . => , implementation.
1827           *
1828           * @todo check if it's viable to use localeconv() for the decimal
1829           *       separator thing.
1830           * @param $number Mixed: the string to be formatted, should be an integer
1831           *        or a floating point number.
1832           * @param $nocommafy Bool: set to true for special numbers like dates
1833           * @return string
1834           */
1835         function formatNum( $number, $nocommafy = false ) {
1836                 global $wgTranslateNumerals;
1837                 if (!$nocommafy) {
1838                         $number = $this->commafy($number);
1839                         $s = $this->separatorTransformTable();
1840                         if (!is_null($s)) { $number = strtr($number, $s); }
1841                 }
1842
1843                 if ($wgTranslateNumerals) {
1844                         $s = $this->digitTransformTable();
1845                         if (!is_null($s)) { $number = strtr($number, $s); }
1846                 }
1847
1848                 return $number;
1849         }
1850
1851         function parseFormattedNumber( $number ) {
1852                 $s = $this->digitTransformTable();
1853                 if (!is_null($s)) { $number = strtr($number, array_flip($s)); }
1854
1855                 $s = $this->separatorTransformTable();
1856                 if (!is_null($s)) { $number = strtr($number, array_flip($s)); }
1857
1858                 $number = strtr( $number, array (',' => '') );
1859                 return $number;
1860         }
1861
1862         /**
1863          * Adds commas to a given number
1864          *
1865          * @param $_ mixed
1866          * @return string
1867          */
1868         function commafy($_) {
1869                 return strrev((string)preg_replace('/(\d{3})(?=\d)(?!\d*\.)/','$1,',strrev($_)));
1870         }
1871
1872         function digitTransformTable() {
1873                 $this->load();
1874                 return $this->digitTransformTable;
1875         }
1876
1877         function separatorTransformTable() {
1878                 $this->load();
1879                 return $this->separatorTransformTable;
1880         }
1881
1882
1883         /**
1884          * For the credit list in includes/Credits.php (action=credits)
1885          *
1886          * @param $l Array
1887          * @return string
1888          */
1889         function listToText( $l ) {
1890                 $s = '';
1891                 $m = count($l) - 1;
1892                 for ($i = $m; $i >= 0; $i--) {
1893                         if ($i == $m) {
1894                                 $s = $l[$i];
1895                         } else if ($i == $m - 1) {
1896                                 $s = $l[$i] . ' ' . $this->getMessageFromDB( 'and' ) . ' ' . $s;
1897                         } else {
1898                                 $s = $l[$i] . ', ' . $s;
1899                         }
1900                 }
1901                 return $s;
1902         }
1903
1904         /**
1905          * Take a list of strings and build a locale-friendly comma-separated
1906          * list, using the local comma-separator message.
1907          * @param $list array of strings to put in a comma list
1908          * @return string
1909          */
1910         function commaList( $list, $forContent = false ) {
1911                 return implode(
1912                         $list,
1913                         wfMsgExt( 'comma-separator', array( 'escapenoentities', 'language' => $this ) ) );
1914         }
1915
1916         /**
1917          * Same as commaList, but separate it with the pipe instead.
1918          * @param $list array of strings to put in a pipe list
1919          * @return string
1920          */
1921         function pipeList( $list ) {
1922                 return implode(
1923                         $list,
1924                         wfMsgExt( 'pipe-separator', array( 'escapenoentities', 'language' => $this ) ) );
1925         }
1926
1927         /**
1928          * Truncate a string to a specified length in bytes, appending an optional
1929          * string (e.g. for ellipses)
1930          *
1931          * The database offers limited byte lengths for some columns in the database;
1932          * multi-byte character sets mean we need to ensure that only whole characters
1933          * are included, otherwise broken characters can be passed to the user
1934          *
1935          * If $length is negative, the string will be truncated from the beginning
1936          *
1937          * @param $string String to truncate
1938          * @param $length Int: maximum length (excluding ellipses)
1939          * @param $ellipsis String to append to the truncated text
1940          * @return string
1941          */
1942         function truncate( $string, $length, $ellipsis = "" ) {
1943                 if( $length == 0 ) {
1944                         return $ellipsis;
1945                 }
1946                 if ( strlen( $string ) <= abs( $length ) ) {
1947                         return $string;
1948                 }
1949                 if( $length > 0 ) {
1950                         $string = substr( $string, 0, $length );
1951                         $char = ord( $string[strlen( $string ) - 1] );
1952                         $m = array();
1953                         if ($char >= 0xc0) {
1954                                 # We got the first byte only of a multibyte char; remove it.
1955                                 $string = substr( $string, 0, -1 );
1956                         } elseif( $char >= 0x80 &&
1957                                   preg_match( '/^(.*)(?:[\xe0-\xef][\x80-\xbf]|' .
1958                                               '[\xf0-\xf7][\x80-\xbf]{1,2})$/', $string, $m ) ) {
1959                             # We chopped in the middle of a character; remove it
1960                                 $string = $m[1];
1961                         }
1962                         return $string . $ellipsis;
1963                 } else {
1964                         $string = substr( $string, $length );
1965                         $char = ord( $string[0] );
1966                         if( $char >= 0x80 && $char < 0xc0 ) {
1967                                 # We chopped in the middle of a character; remove the whole thing
1968                                 $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
1969                         }
1970                         return $ellipsis . $string;
1971                 }
1972         }
1973
1974         /**
1975          * Grammatical transformations, needed for inflected languages
1976          * Invoked by putting {{grammar:case|word}} in a message
1977          *
1978          * @param $word string
1979          * @param $case string
1980          * @return string
1981          */
1982         function convertGrammar( $word, $case ) {
1983                 global $wgGrammarForms;
1984                 if ( isset($wgGrammarForms[$this->getCode()][$case][$word]) ) {
1985                         return $wgGrammarForms[$this->getCode()][$case][$word];
1986                 }
1987                 return $word;
1988         }
1989
1990         /**
1991          * Plural form transformations, needed for some languages.
1992          * For example, there are 3 form of plural in Russian and Polish,
1993          * depending on "count mod 10". See [[w:Plural]]
1994          * For English it is pretty simple.
1995          *
1996          * Invoked by putting {{plural:count|wordform1|wordform2}}
1997          * or {{plural:count|wordform1|wordform2|wordform3}}
1998          *
1999          * Example: {{plural:{{NUMBEROFARTICLES}}|article|articles}}
2000          *
2001          * @param $count Integer: non-localized number
2002          * @param $forms Array: different plural forms
2003          * @return string Correct form of plural for $count in this language
2004          */
2005         function convertPlural( $count, $forms ) {
2006                 if ( !count($forms) ) { return ''; }
2007                 $forms = $this->preConvertPlural( $forms, 2 );
2008
2009                 return ( $count == 1 ) ? $forms[0] : $forms[1];
2010         }
2011
2012         /**
2013          * Checks that convertPlural was given an array and pads it to requested
2014          * amound of forms by copying the last one.
2015          *
2016          * @param $count Integer: How many forms should there be at least
2017          * @param $forms Array of forms given to convertPlural
2018          * @return array Padded array of forms or an exception if not an array
2019          */
2020         protected function preConvertPlural( /* Array */ $forms, $count ) {
2021                 while ( count($forms) < $count ) {
2022                         $forms[] = $forms[count($forms)-1];
2023                 }
2024                 return $forms;
2025         }
2026
2027         /**
2028          * For translaing of expiry times
2029          * @param $str String: the validated block time in English
2030          * @return Somehow translated block time
2031          * @see LanguageFi.php for example implementation
2032          */
2033         function translateBlockExpiry( $str ) {
2034
2035                 $scBlockExpiryOptions = $this->getMessageFromDB( 'ipboptions' );
2036
2037                 if ( $scBlockExpiryOptions == '-') {
2038                         return $str;
2039                 }
2040
2041                 foreach (explode(',', $scBlockExpiryOptions) as $option) {
2042                         if ( strpos($option, ":") === false )
2043                                 continue;
2044                         list($show, $value) = explode(":", $option);
2045                         if ( strcmp ( $str, $value) == 0 ) {
2046                                 return htmlspecialchars( trim( $show ) );
2047                         }
2048                 }
2049
2050                 return $str;
2051         }
2052
2053         /**
2054          * languages like Chinese need to be segmented in order for the diff
2055          * to be of any use
2056          *
2057          * @param $text String
2058          * @return String
2059          */
2060         function segmentForDiff( $text ) {
2061                 return $text;
2062         }
2063
2064         /**
2065          * and unsegment to show the result
2066          *
2067          * @param $text String
2068          * @return String
2069          */
2070         function unsegmentForDiff( $text ) {
2071                 return $text;
2072         }
2073
2074         # convert text to different variants of a language.
2075         function convert( $text, $isTitle = false) {
2076                 return $this->mConverter->convert($text, $isTitle);
2077         }
2078
2079         # Convert text from within Parser
2080         function parserConvert( $text, &$parser ) {
2081                 return $this->mConverter->parserConvert( $text, $parser );
2082         }
2083
2084         # Check if this is a language with variants
2085         function hasVariants(){
2086                 return sizeof($this->getVariants())>1;
2087         }
2088
2089         # Put custom tags (e.g. -{ }-) around math to prevent conversion
2090         function armourMath($text){
2091                 return $this->mConverter->armourMath($text);
2092         }
2093
2094
2095         /**
2096          * Perform output conversion on a string, and encode for safe HTML output.
2097          * @param $text String
2098          * @param $isTitle Bool -- wtf?
2099          * @return string
2100          * @todo this should get integrated somewhere sane
2101          */
2102         function convertHtml( $text, $isTitle = false ) {
2103                 return htmlspecialchars( $this->convert( $text, $isTitle ) );
2104         }
2105
2106         function convertCategoryKey( $key ) {
2107                 return $this->mConverter->convertCategoryKey( $key );
2108         }
2109
2110         /**
2111          * get the list of variants supported by this langauge
2112          * see sample implementation in LanguageZh.php
2113          *
2114          * @return array an array of language codes
2115          */
2116         function getVariants() {
2117                 return $this->mConverter->getVariants();
2118         }
2119
2120
2121         function getPreferredVariant( $fromUser = true ) {
2122                 return $this->mConverter->getPreferredVariant( $fromUser );
2123         }
2124
2125         /**
2126          * if a language supports multiple variants, it is
2127          * possible that non-existing link in one variant
2128          * actually exists in another variant. this function
2129          * tries to find it. See e.g. LanguageZh.php
2130          *
2131          * @param $link String: the name of the link
2132          * @param $nt Mixed: the title object of the link
2133          * @return null the input parameters may be modified upon return
2134          */
2135         function findVariantLink( &$link, &$nt, $forTemplate = false ) {
2136                 $this->mConverter->findVariantLink($link, $nt, $forTemplate );
2137         }
2138
2139         /**
2140          * If a language supports multiple variants, converts text
2141          * into an array of all possible variants of the text:
2142          *  'variant' => text in that variant
2143          */
2144
2145         function convertLinkToAllVariants($text){
2146                 return $this->mConverter->convertLinkToAllVariants($text);
2147         }
2148
2149
2150         /**
2151          * returns language specific options used by User::getPageRenderHash()
2152          * for example, the preferred language variant
2153          *
2154          * @return string
2155          */
2156         function getExtraHashOptions() {
2157                 return $this->mConverter->getExtraHashOptions();
2158         }
2159
2160         /**
2161          * for languages that support multiple variants, the title of an
2162          * article may be displayed differently in different variants. this
2163          * function returns the apporiate title defined in the body of the article.
2164          *
2165          * @return string
2166          */
2167         function getParsedTitle() {
2168                 return $this->mConverter->getParsedTitle();
2169         }
2170
2171         /**
2172          * Enclose a string with the "no conversion" tag. This is used by
2173          * various functions in the Parser
2174          *
2175          * @param $text String: text to be tagged for no conversion
2176          * @param $noParse
2177          * @return string the tagged text
2178          */
2179         function markNoConversion( $text, $noParse=false ) {
2180                 return $this->mConverter->markNoConversion( $text, $noParse );
2181         }
2182
2183         /**
2184          * A regular expression to match legal word-trailing characters
2185          * which should be merged onto a link of the form [[foo]]bar.
2186          *
2187          * @return string
2188          */
2189         function linkTrail() {
2190                 $this->load();
2191                 return $this->linkTrail;
2192         }
2193
2194         function getLangObj() {
2195                 return $this;
2196         }
2197
2198         /**
2199          * Get the RFC 3066 code for this language object
2200          */
2201         function getCode() {
2202                 return $this->mCode;
2203         }
2204
2205         function setCode( $code ) {
2206                 $this->mCode = $code;
2207         }
2208
2209         static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
2210                 return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
2211         }
2212
2213         static function getMessagesFileName( $code ) {
2214                 global $IP;
2215                 return self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
2216         }
2217
2218         static function getClassFileName( $code ) {
2219                 global $IP;
2220                 return self::getFileName( "$IP/languages/classes/Language", $code, '.php' );
2221         }
2222
2223         static function getLocalisationArray( $code, $disableCache = false ) {
2224                 self::loadLocalisation( $code, $disableCache );
2225                 return self::$mLocalisationCache[$code];
2226         }
2227
2228         /**
2229          * Load localisation data for a given code into the static cache
2230          *
2231          * @return array Dependencies, map of filenames to mtimes
2232          */
2233         static function loadLocalisation( $code, $disableCache = false ) {
2234                 static $recursionGuard = array();
2235                 global $wgMemc, $wgCheckSerialized;
2236
2237                 if ( !$code ) {
2238                         throw new MWException( "Invalid language code requested" );
2239                 }
2240
2241                 if ( !$disableCache ) {
2242                         # Try the per-process cache
2243                         if ( isset( self::$mLocalisationCache[$code] ) ) {
2244                                 return self::$mLocalisationCache[$code]['deps'];
2245                         }
2246
2247                         wfProfileIn( __METHOD__ );
2248
2249                         # Try the serialized directory
2250                         $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
2251                         if ( $cache ) {
2252                                 if ( $wgCheckSerialized && self::isLocalisationOutOfDate( $cache ) ) {
2253                                         $cache = false;
2254                                         wfDebug( "Language::loadLocalisation(): precompiled data file for $code is out of date\n" );
2255                                 } else {
2256                                         self::$mLocalisationCache[$code] = $cache;
2257                                         wfDebug( "Language::loadLocalisation(): got localisation for $code from precompiled data file\n" );
2258                                         wfProfileOut( __METHOD__ );
2259                                         return self::$mLocalisationCache[$code]['deps'];
2260                                 }
2261                         }
2262
2263                         # Try the global cache
2264                         $memcKey = wfMemcKey('localisation', $code );
2265                         $fbMemcKey = wfMemcKey('fallback', $cache['fallback'] );
2266                         $cache = $wgMemc->get( $memcKey );
2267                         if ( $cache ) {
2268                                 if ( self::isLocalisationOutOfDate( $cache ) ) {
2269                                         $wgMemc->delete( $memcKey );
2270                                         $wgMemc->delete( $fbMemcKey );
2271                                         $cache = false;
2272                                         wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired\n" );
2273                                 } else {
2274                                         self::$mLocalisationCache[$code] = $cache;
2275                                         wfDebug( "Language::loadLocalisation(): got localisation for $code from cache\n" );
2276                                         wfProfileOut( __METHOD__ );
2277                                         return $cache['deps'];
2278                                 }
2279                         }
2280                 } else {
2281                         wfProfileIn( __METHOD__ );
2282                 }
2283
2284                 # Default fallback, may be overridden when the messages file is included
2285                 if ( $code != 'en' ) {
2286                         $fallback = 'en';
2287                 } else {
2288                         $fallback = false;
2289                 }
2290
2291                 # Load the primary localisation from the source file
2292                 $filename = self::getMessagesFileName( $code );
2293                 if ( !file_exists( $filename ) ) {
2294                         wfDebug( "Language::loadLocalisation(): no localisation file for $code, using implicit fallback to en\n" );
2295                         $cache = compact( self::$mLocalisationKeys ); // Set correct fallback
2296                         $deps = array();
2297                 } else {
2298                         $deps = array( $filename => filemtime( $filename ) );
2299                         require( $filename );
2300                         $cache = compact( self::$mLocalisationKeys );
2301                         wfDebug( "Language::loadLocalisation(): got localisation for $code from source\n" );
2302                 }
2303
2304                 if ( !empty( $fallback ) ) {
2305                         # Load the fallback localisation, with a circular reference guard
2306                         if ( isset( $recursionGuard[$code] ) ) {
2307                                 throw new MWException( "Error: Circular fallback reference in language code $code" );
2308                         }
2309                         $recursionGuard[$code] = true;
2310                         $newDeps = self::loadLocalisation( $fallback, $disableCache );
2311                         unset( $recursionGuard[$code] );
2312
2313                         $secondary = self::$mLocalisationCache[$fallback];
2314                         $deps = array_merge( $deps, $newDeps );
2315
2316                         # Merge the fallback localisation with the current localisation
2317                         foreach ( self::$mLocalisationKeys as $key ) {
2318                                 if ( isset( $cache[$key] ) ) {
2319                                         if ( isset( $secondary[$key] ) ) {
2320                                                 if ( in_array( $key, self::$mMergeableMapKeys ) ) {
2321                                                         $cache[$key] = $cache[$key] + $secondary[$key];
2322                                                 } elseif ( in_array( $key, self::$mMergeableListKeys ) ) {
2323                                                         $cache[$key] = array_merge( $secondary[$key], $cache[$key] );
2324                                                 } elseif ( in_array( $key, self::$mMergeableAliasListKeys ) ) {
2325                                                         $cache[$key] = array_merge_recursive( $cache[$key], $secondary[$key] );
2326                                                 }
2327                                         }
2328                                 } else {
2329                                         $cache[$key] = $secondary[$key];
2330                                 }
2331                         }
2332
2333                         # Merge bookstore lists if requested
2334                         if ( !empty( $cache['bookstoreList']['inherit'] ) ) {
2335                                 $cache['bookstoreList'] = array_merge( $cache['bookstoreList'], $secondary['bookstoreList'] );
2336                         }
2337                         if ( isset( $cache['bookstoreList']['inherit'] ) ) {
2338                                 unset( $cache['bookstoreList']['inherit'] );
2339                         }
2340                 }
2341
2342                 # Add dependencies to the cache entry
2343                 $cache['deps'] = $deps;
2344
2345                 # Replace spaces with underscores in namespace names
2346                 $cache['namespaceNames'] = str_replace( ' ', '_', $cache['namespaceNames'] );
2347
2348                 # And do the same for specialpage aliases. $page is an array.
2349                 foreach ( $cache['specialPageAliases'] as &$page ) {
2350                         $page = str_replace( ' ', '_', $page );
2351                 }
2352                 # Decouple the reference to prevent accidental damage
2353                 unset($page);
2354
2355                 # Save to both caches
2356                 self::$mLocalisationCache[$code] = $cache;
2357                 if ( !$disableCache ) {
2358                         $wgMemc->set( $memcKey, $cache );
2359                         $wgMemc->set( $fbMemcKey, (string) $cache['fallback'] );
2360                 }
2361
2362                 wfProfileOut( __METHOD__ );
2363                 return $deps;
2364         }
2365
2366         /**
2367          * Test if a given localisation cache is out of date with respect to the
2368          * source Messages files. This is done automatically for the global cache
2369          * in $wgMemc, but is only done on certain occasions for the serialized
2370          * data file.
2371          *
2372          * @param $cache mixed Either a language code or a cache array
2373          */
2374         static function isLocalisationOutOfDate( $cache ) {
2375                 if ( !is_array( $cache ) ) {
2376                         self::loadLocalisation( $cache );
2377                         $cache = self::$mLocalisationCache[$cache];
2378                 }
2379                 $expired = false;
2380                 foreach ( $cache['deps'] as $file => $mtime ) {
2381                         if ( !file_exists( $file ) || filemtime( $file ) > $mtime ) {
2382                                 $expired = true;
2383                                 break;
2384                         }
2385                 }
2386                 return $expired;
2387         }
2388
2389         /**
2390          * Get the fallback for a given language
2391          */
2392         static function getFallbackFor( $code ) {
2393                 // Shortcut
2394                 if ( $code === 'en' ) return false;
2395
2396                 // Local cache
2397                 static $cache = array();
2398                 // Quick return
2399                 if ( isset($cache[$code]) ) return $cache[$code];
2400
2401                 // Try memcache
2402                 global $wgMemc;
2403                 $memcKey = wfMemcKey( 'fallback', $code );
2404                 $fbcode = $wgMemc->get( $memcKey );
2405
2406                 if ( is_string($fbcode) ) {
2407                         // False is stored as a string to detect failures in memcache properly
2408                         if ( $fbcode === '' ) $fbcode = false;
2409
2410                         // Update local cache and return
2411                         $cache[$code] = $fbcode;
2412                         return $fbcode;
2413                 }
2414
2415                 // Nothing in caches, load and and update both caches
2416                 self::loadLocalisation( $code );
2417                 $fbcode = self::$mLocalisationCache[$code]['fallback'];
2418
2419                 $cache[$code] = $fbcode;
2420                 $wgMemc->set( $memcKey, (string) $fbcode );
2421
2422                 return $fbcode;
2423         }
2424
2425         /**
2426          * Get all messages for a given language
2427          */
2428         static function getMessagesFor( $code ) {
2429                 self::loadLocalisation( $code );
2430                 return self::$mLocalisationCache[$code]['messages'];
2431         }
2432
2433         /**
2434          * Get a message for a given language
2435          */
2436         static function getMessageFor( $key, $code ) {
2437                 self::loadLocalisation( $code );
2438                 return isset( self::$mLocalisationCache[$code]['messages'][$key] ) ? self::$mLocalisationCache[$code]['messages'][$key] : null;
2439         }
2440
2441         /**
2442          * Load localisation data for this object
2443          */
2444         function load() {
2445                 if ( !$this->mLoaded ) {
2446                         self::loadLocalisation( $this->getCode() );
2447                         $cache =& self::$mLocalisationCache[$this->getCode()];
2448                         foreach ( self::$mLocalisationKeys as $key ) {
2449                                 $this->$key = $cache[$key];
2450                         }
2451                         $this->mLoaded = true;
2452
2453                         $this->fixUpSettings();
2454                 }
2455         }
2456
2457         /**
2458          * Do any necessary post-cache-load settings adjustment
2459          */
2460         function fixUpSettings() {
2461                 global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk,
2462                         $wgNamespaceAliases, $wgAmericanDates;
2463                 wfProfileIn( __METHOD__ );
2464                 if ( $wgExtraNamespaces ) {
2465                         $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames;
2466                 }
2467
2468                 $this->namespaceNames[NS_PROJECT] = $wgMetaNamespace;
2469                 if ( $wgMetaNamespaceTalk ) {
2470                         $this->namespaceNames[NS_PROJECT_TALK] = $wgMetaNamespaceTalk;
2471                 } else {
2472                         $talk = $this->namespaceNames[NS_PROJECT_TALK];
2473                         $talk = str_replace( '$1', $wgMetaNamespace, $talk );
2474
2475                         # Allow grammar transformations
2476                         # Allowing full message-style parsing would make simple requests
2477                         # such as action=raw much more expensive than they need to be.
2478                         # This will hopefully cover most cases.
2479                         $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
2480                                 array( &$this, 'replaceGrammarInNamespace' ), $talk );
2481                         $talk = str_replace( ' ', '_', $talk );
2482                         $this->namespaceNames[NS_PROJECT_TALK] = $talk;
2483                 }
2484
2485                 # The above mixing may leave namespaces out of canonical order.
2486                 # Re-order by namespace ID number...
2487                 ksort( $this->namespaceNames );
2488
2489                 # Put namespace names and aliases into a hashtable.
2490                 # If this is too slow, then we should arrange it so that it is done
2491                 # before caching. The catch is that at pre-cache time, the above
2492                 # class-specific fixup hasn't been done.
2493                 $this->mNamespaceIds = array();
2494                 foreach ( $this->namespaceNames as $index => $name ) {
2495                         $this->mNamespaceIds[$this->lc($name)] = $index;
2496                 }
2497                 if ( $this->namespaceAliases ) {
2498                         foreach ( $this->namespaceAliases as $name => $index ) {
2499                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2500                         }
2501                 }
2502                 if ( $wgNamespaceAliases ) {
2503                         foreach ( $wgNamespaceAliases as $name => $index ) {
2504                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2505                         }
2506                 }
2507
2508                 if ( $this->defaultDateFormat == 'dmy or mdy' ) {
2509                         $this->defaultDateFormat = $wgAmericanDates ? 'mdy' : 'dmy';
2510                 }
2511                 wfProfileOut( __METHOD__ );
2512         }
2513
2514         function replaceGrammarInNamespace( $m ) {
2515                 return $this->convertGrammar( trim( $m[2] ), trim( $m[1] ) );
2516         }
2517
2518         static function getCaseMaps() {
2519                 static $wikiUpperChars, $wikiLowerChars;
2520                 if ( isset( $wikiUpperChars ) ) {
2521                         return array( $wikiUpperChars, $wikiLowerChars );
2522                 }
2523
2524                 wfProfileIn( __METHOD__ );
2525                 $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
2526                 if ( $arr === false ) {
2527                         throw new MWException(
2528                                 "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
2529                 }
2530                 extract( $arr );
2531                 wfProfileOut( __METHOD__ );
2532                 return array( $wikiUpperChars, $wikiLowerChars );
2533         }
2534
2535         function formatTimePeriod( $seconds ) {
2536                 if ( $seconds < 10 ) {
2537                         return $this->formatNum( sprintf( "%.1f", $seconds ) ) . wfMsg( 'seconds-abbrev' );
2538                 } elseif ( $seconds < 60 ) {
2539                         return $this->formatNum( round( $seconds ) ) . wfMsg( 'seconds-abbrev' );
2540                 } elseif ( $seconds < 3600 ) {
2541                         return $this->formatNum( floor( $seconds / 60 ) ) . wfMsg( 'minutes-abbrev' ) .
2542                                 $this->formatNum( round( fmod( $seconds, 60 ) ) ) . wfMsg( 'seconds-abbrev' );
2543                 } else {
2544                         $hours = floor( $seconds / 3600 );
2545                         $minutes = floor( ( $seconds - $hours * 3600 ) / 60 );
2546                         $secondsPart = round( $seconds - $hours * 3600 - $minutes * 60 );
2547                         return $this->formatNum( $hours ) . wfMsg( 'hours-abbrev' ) .
2548                                 $this->formatNum( $minutes ) . wfMsg( 'minutes-abbrev' ) .
2549                                 $this->formatNum( $secondsPart ) . wfMsg( 'seconds-abbrev' );
2550                 }
2551         }
2552
2553         function formatBitrate( $bps ) {
2554                 $units = array( 'bps', 'kbps', 'Mbps', 'Gbps' );
2555                 if ( $bps <= 0 ) {
2556                         return $this->formatNum( $bps ) . $units[0];
2557                 }
2558                 $unitIndex = floor( log10( $bps ) / 3 );
2559                 $mantissa = $bps / pow( 1000, $unitIndex );
2560                 if ( $mantissa < 10 ) {
2561                         $mantissa = round( $mantissa, 1 );
2562                 } else {
2563                         $mantissa = round( $mantissa );
2564                 }
2565                 return $this->formatNum( $mantissa ) . $units[$unitIndex];
2566         }
2567
2568         /**
2569          * Format a size in bytes for output, using an appropriate
2570          * unit (B, KB, MB or GB) according to the magnitude in question
2571          *
2572          * @param $size Size to format
2573          * @return string Plain text (not HTML)
2574          */
2575         function formatSize( $size ) {
2576                 // For small sizes no decimal places necessary
2577                 $round = 0;
2578                 if( $size > 1024 ) {
2579                         $size = $size / 1024;
2580                         if( $size > 1024 ) {
2581                                 $size = $size / 1024;
2582                                 // For MB and bigger two decimal places are smarter
2583                                 $round = 2;
2584                                 if( $size > 1024 ) {
2585                                         $size = $size / 1024;
2586                                         $msg = 'size-gigabytes';
2587                                 } else {
2588                                         $msg = 'size-megabytes';
2589                                 }
2590                         } else {
2591                                 $msg = 'size-kilobytes';
2592                         }
2593                 } else {
2594                         $msg = 'size-bytes';
2595                 }
2596                 $size = round( $size, $round );
2597                 $text = $this->getMessageFromDB( $msg );
2598                 return str_replace( '$1', $this->formatNum( $size ), $text );
2599         }
2600 }