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         var $mLocalizedLanguagesNames = null;
  59
  60         static public $mLocalisationKeys = array(
  61                 'fallback', 'namespaceNames', 'mathNames', 'bookstoreList',
  62                 'magicWords', 'messages', 'rtl', 'digitTransformTable',
  63                 'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
  64                 'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
  65                 'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
  66                 'defaultDateFormat', 'extraUserToggles', 'specialPageAliases',
  67                 'imageFiles'
  68         );
  69
  70         static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
  71                 'dateFormats', 'defaultUserOptionOverrides', 'magicWords', 'imageFiles' );
  72
  73         static public $mMergeableListKeys = array( 'extraUserToggles' );
  74
  75         static public $mMergeableAliasListKeys = array( 'specialPageAliases' );
  76
  77         static public $mLocalisationCache = array();
  78         static public $mLangObjCache = array();
  79
  80         static public $mWeekdayMsgs = array(
  81                 'sunday', 'monday', 'tuesday', 'wednesday', 'thursday',
  82                 'friday', 'saturday'
  83         );
  84
  85         static public $mWeekdayAbbrevMsgs = array(
  86                 'sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'
  87         );
  88
  89         static public $mMonthMsgs = array(
  90                 'january', 'february', 'march', 'april', 'may_long', 'june',
  91                 'july', 'august', 'september', 'october', 'november',
  92                 'december'
  93         );
  94         static public $mMonthGenMsgs = array(
  95                 'january-gen', 'february-gen', 'march-gen', 'april-gen', 'may-gen', 'june-gen',
  96                 'july-gen', 'august-gen', 'september-gen', 'october-gen', 'november-gen',
  97                 'december-gen'
  98         );
  99         static public $mMonthAbbrevMsgs = array(
 100                 'jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug',
 101                 'sep', 'oct', 'nov', 'dec'
 102         );
 103
 104         static public $mIranianCalendarMonthMsgs = array(
 105                 'iranian-calendar-m1', 'iranian-calendar-m2', 'iranian-calendar-m3',
 106                 'iranian-calendar-m4', 'iranian-calendar-m5', 'iranian-calendar-m6',
 107                 'iranian-calendar-m7', 'iranian-calendar-m8', 'iranian-calendar-m9',
 108                 'iranian-calendar-m10', 'iranian-calendar-m11', 'iranian-calendar-m12'
 109         );
 110
 111         static public $mHebrewCalendarMonthMsgs = array(
 112                 'hebrew-calendar-m1', 'hebrew-calendar-m2', 'hebrew-calendar-m3',
 113                 'hebrew-calendar-m4', 'hebrew-calendar-m5', 'hebrew-calendar-m6',
 114                 'hebrew-calendar-m7', 'hebrew-calendar-m8', 'hebrew-calendar-m9',
 115                 'hebrew-calendar-m10', 'hebrew-calendar-m11', 'hebrew-calendar-m12',
 116                 'hebrew-calendar-m6a', 'hebrew-calendar-m6b'
 117         );
 118
 119         static public $mHebrewCalendarMonthGenMsgs = array(
 120                 'hebrew-calendar-m1-gen', 'hebrew-calendar-m2-gen', 'hebrew-calendar-m3-gen',
 121                 'hebrew-calendar-m4-gen', 'hebrew-calendar-m5-gen', 'hebrew-calendar-m6-gen',
 122                 'hebrew-calendar-m7-gen', 'hebrew-calendar-m8-gen', 'hebrew-calendar-m9-gen',
 123                 'hebrew-calendar-m10-gen', 'hebrew-calendar-m11-gen', 'hebrew-calendar-m12-gen',
 124                 'hebrew-calendar-m6a-gen', 'hebrew-calendar-m6b-gen'
 125         );
 126
 127         static public $mHijriCalendarMonthMsgs = array(
 128                 'hijri-calendar-m1', 'hijri-calendar-m2', 'hijri-calendar-m3',
 129                 'hijri-calendar-m4', 'hijri-calendar-m5', 'hijri-calendar-m6',
 130                 'hijri-calendar-m7', 'hijri-calendar-m8', 'hijri-calendar-m9',
 131                 'hijri-calendar-m10', 'hijri-calendar-m11', 'hijri-calendar-m12'
 132         );
 133
 134         /**
 135          * Get a cached language object for a given language code
 136          */
 137         static function factory( $code ) {
 138                 if ( !isset( self::$mLangObjCache[$code] ) ) {
 139                         if( count( self::$mLangObjCache ) > 10 ) {
 140                                 // Don't keep a billion objects around, that's stupid.
 141                                 self::$mLangObjCache = array();
 142                         }
 143                         self::$mLangObjCache[$code] = self::newFromCode( $code );
 144                 }
 145                 return self::$mLangObjCache[$code];
 146         }
 147
 148         /**
 149          * Create a language object for a given language code
 150          */
 151         protected static function newFromCode( $code ) {
 152                 global $IP;
 153                 static $recursionLevel = 0;
 154                 if ( $code == 'en' ) {
 155                         $class = 'Language';
 156                 } else {
 157                         $class = 'Language' . str_replace( '-', '_', ucfirst( $code ) );
 158                         // Preload base classes to work around APC/PHP5 bug
 159                         if ( file_exists( "$IP/languages/classes/$class.deps.php" ) ) {
 160                                 include_once("$IP/languages/classes/$class.deps.php");
 161                         }
 162                         if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
 163                                 include_once("$IP/languages/classes/$class.php");
 164                         }
 165                 }
 166
 167                 if ( $recursionLevel > 5 ) {
 168                         throw new MWException( "Language fallback loop detected when creating class $class\n" );
 169                 }
 170
 171                 if( ! class_exists( $class ) ) {
 172                         $fallback = Language::getFallbackFor( $code );
 173                         ++$recursionLevel;
 174                         $lang = Language::newFromCode( $fallback );
 175                         --$recursionLevel;
 176                         $lang->setCode( $code );
 177                 } else {
 178                         $lang = new $class;
 179                 }
 180                 return $lang;
 181         }
 182
 183         function __construct() {
 184                 $this->mConverter = new FakeConverter($this);
 185                 // Set the code to the name of the descendant
 186                 if ( get_class( $this ) == 'Language' ) {
 187                         $this->mCode = 'en';
 188                 } else {
 189                         $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
 190                 }
 191         }
 192
 193         /**
 194          * Reduce memory usage
 195          */
 196         function __destruct() {
 197                 foreach ( $this as $name => $value ) {
 198                         unset( $this->$name );
 199                 }
 200         }
 201
 202         /**
 203          * Hook which will be called if this is the content language.
 204          * Descendants can use this to register hook functions or modify globals
 205          */
 206         function initContLang() {}
 207
 208         /**
 209          * @deprecated Use User::getDefaultOptions()
 210          * @return array
 211          */
 212         function getDefaultUserOptions() {
 213                 wfDeprecated( __METHOD__ );
 214                 return User::getDefaultOptions();
 215         }
 216
 217         function getFallbackLanguageCode() {
 218                 return self::getFallbackFor( $this->mCode );
 219         }
 220
 221         /**
 222          * Exports $wgBookstoreListEn
 223          * @return array
 224          */
 225         function getBookstoreList() {
 226                 $this->load();
 227                 return $this->bookstoreList;
 228         }
 229
 230         /**
 231          * @return array
 232          */
 233         function getNamespaces() {
 234                 $this->load();
 235                 return $this->namespaceNames;
 236         }
 237
 238         /**
 239          * A convenience function that returns the same thing as
 240          * getNamespaces() except with the array values changed to ' '
 241          * where it found '_', useful for producing output to be displayed
 242          * e.g. in <select> forms.
 243          *
 244          * @return array
 245          */
 246         function getFormattedNamespaces() {
 247                 $ns = $this->getNamespaces();
 248                 foreach($ns as $k => $v) {
 249                         $ns[$k] = strtr($v, '_', ' ');
 250                 }
 251                 return $ns;
 252         }
 253
 254         /**
 255          * Get a namespace value by key
 256          * <code>
 257          * $mw_ns = $wgContLang->getNsText( NS_MEDIAWIKI );
 258          * echo $mw_ns; // prints 'MediaWiki'
 259          * </code>
 260          *
 261          * @param $index Int: the array key of the namespace to return
 262          * @return mixed, string if the namespace value exists, otherwise false
 263          */
 264         function getNsText( $index ) {
 265                 $ns = $this->getNamespaces();
 266                 return isset( $ns[$index] ) ? $ns[$index] : false;
 267         }
 268
 269         /**
 270          * A convenience function that returns the same thing as
 271          * getNsText() except with '_' changed to ' ', useful for
 272          * producing output.
 273          *
 274          * @return array
 275          */
 276         function getFormattedNsText( $index ) {
 277                 $ns = $this->getNsText( $index );
 278                 return strtr($ns, '_', ' ');
 279         }
 280
 281         /**
 282          * Get a namespace key by value, case insensitive.
 283          * Only matches namespace names for the current language, not the
 284          * canonical ones defined in Namespace.php.
 285          *
 286          * @param $text String
 287          * @return mixed An integer if $text is a valid value otherwise false
 288          */
 289         function getLocalNsIndex( $text ) {
 290                 $this->load();
 291                 $lctext = $this->lc($text);
 292                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 293         }
 294
 295         /**
 296          * Get a namespace key by value, case insensitive.  Canonical namespace
 297          * names override custom ones defined for the current language.
 298          *
 299          * @param $text String
 300          * @return mixed An integer if $text is a valid value otherwise false
 301          */
 302         function getNsIndex( $text ) {
 303                 $this->load();
 304                 $lctext = $this->lc($text);
 305                 if( ( $ns = MWNamespace::getCanonicalIndex( $lctext ) ) !== null ) return $ns;
 306                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 307         }
 308
 309         /**
 310          * short names for language variants used for language conversion links.
 311          *
 312          * @param $code String
 313          * @return string
 314          */
 315         function getVariantname( $code ) {
 316                 return $this->getMessageFromDB( "variantname-$code" );
 317         }
 318
 319         function specialPage( $name ) {
 320                 $aliases = $this->getSpecialPageAliases();
 321                 if ( isset( $aliases[$name][0] ) ) {
 322                         $name = $aliases[$name][0];
 323                 }
 324                 return $this->getNsText( NS_SPECIAL ) . ':' . $name;
 325         }
 326
 327         function getQuickbarSettings() {
 328                 return array(
 329                         $this->getMessage( 'qbsettings-none' ),
 330                         $this->getMessage( 'qbsettings-fixedleft' ),
 331                         $this->getMessage( 'qbsettings-fixedright' ),
 332                         $this->getMessage( 'qbsettings-floatingleft' ),
 333                         $this->getMessage( 'qbsettings-floatingright' )
 334                 );
 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 localized language names
 415          *
 416          * @return array
 417          */
 418         function getLocalizedLanguageNames() {
 419                 if( !is_array( $this->mLocalizedLanguagesNames ) ) {
 420                         $this->mLocalizedLanguagesNames = array();
 421                         wfRunHooks( 'LanguageGetLocalizedLanguageNames', array( &$this->mLocalizedLanguagesNames, $this->getCode() ) );
 422                 }
 423                 return $this->mLocalizedLanguagesNames;
 424         }
 425
 426         /**
 427          * Get a message from the MediaWiki namespace.
 428          *
 429          * @param $msg String: message name
 430          * @return string
 431          */
 432         function getMessageFromDB( $msg ) {
 433                 return wfMsgExt( $msg, array( 'parsemag', 'language' => $this ) );
 434         }
 435
 436         /**
 437          * Get a language name
 438          *
 439          * @param $code String language code
 440          * @return $localized boolean gets the localized language name
 441          */
 442         function getLanguageName( $code, $localized = false ) {
 443                 $names = self::getLanguageNames();
 444                 if ( !array_key_exists( $code, $names ) ) {
 445                         return '';
 446                 }
 447                 if( $localized ) {
 448                         $languageNames = $this->getLocalizedLanguageNames();
 449                         return isset( $languageNames[$code] ) ? $languageNames[$code] : $names[$code];
 450                 } else {
 451                         return $names[$code];
 452                 }
 453         }
 454
 455         function getLanguageNameLocalized( $code ) {
 456                 return self::getLanguageName( $code, true );
 457         }
 458
 459         function getMonthName( $key ) {
 460                 return $this->getMessageFromDB( self::$mMonthMsgs[$key-1] );
 461         }
 462
 463         function getMonthNameGen( $key ) {
 464                 return $this->getMessageFromDB( self::$mMonthGenMsgs[$key-1] );
 465         }
 466
 467         function getMonthAbbreviation( $key ) {
 468                 return $this->getMessageFromDB( self::$mMonthAbbrevMsgs[$key-1] );
 469         }
 470
 471         function getWeekdayName( $key ) {
 472                 return $this->getMessageFromDB( self::$mWeekdayMsgs[$key-1] );
 473         }
 474
 475         function getWeekdayAbbreviation( $key ) {
 476                 return $this->getMessageFromDB( self::$mWeekdayAbbrevMsgs[$key-1] );
 477         }
 478
 479         function getIranianCalendarMonthName( $key ) {
 480                 return $this->getMessageFromDB( self::$mIranianCalendarMonthMsgs[$key-1] );
 481         }
 482
 483         function getHebrewCalendarMonthName( $key ) {
 484                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthMsgs[$key-1] );
 485         }
 486
 487         function getHebrewCalendarMonthNameGen( $key ) {
 488                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthGenMsgs[$key-1] );
 489         }
 490
 491         function getHijriCalendarMonthName( $key ) {
 492                 return $this->getMessageFromDB( self::$mHijriCalendarMonthMsgs[$key-1] );
 493         }
 494
 495         /**
 496          * Used by date() and time() to adjust the time output.
 497          *
 498          * @param $ts Int the time in date('YmdHis') format
 499          * @param $tz Mixed: adjust the time by this amount (default false, mean we
 500          *            get user timecorrection setting)
 501          * @return int
 502          */
 503         function userAdjust( $ts, $tz = false ) {
 504                 global $wgUser, $wgLocalTZoffset;
 505
 506                 if ( $tz === false ) {
 507                         $tz = $wgUser->getOption( 'timecorrection' );
 508                 }
 509
 510                 $data = explode( '|', $tz, 3 );
 511
 512                 if ( $data[0] == 'ZoneInfo' ) {
 513                         if ( function_exists( 'timezone_open' ) && @timezone_open( $data[2] ) !== false ) {
 514                                 $date = date_create( $ts, timezone_open( 'UTC' ) );
 515                                 date_timezone_set( $date, timezone_open( $data[2] ) );
 516                                 $date = date_format( $date, 'YmdHis' );
 517                                 return $date;
 518                         }
 519                         # Unrecognized timezone, default to 'Offset' with the stored offset.
 520                         $data[0] = 'Offset';
 521                 }
 522
 523                 $minDiff = 0;
 524                 if ( $data[0] == 'System' || $tz == '' ) {
 525                         # Global offset in minutes.
 526                         if( isset($wgLocalTZoffset) ) $minDiff = $wgLocalTZoffset;
 527                 } else if ( $data[0] == 'Offset' ) {
 528                         $minDiff = intval( $data[1] );
 529                 } else {
 530                         $data = explode( ':', $tz );
 531                         if( count( $data ) == 2 ) {
 532                                 $data[0] = intval( $data[0] );
 533                                 $data[1] = intval( $data[1] );
 534                                 $minDiff = abs( $data[0] ) * 60 + $data[1];
 535                                 if ( $data[0] < 0 ) $minDiff = -$minDiff;
 536                         } else {
 537                                 $minDiff = intval( $data[0] ) * 60;
 538                         }
 539                 }
 540
 541                 # No difference ? Return time unchanged
 542                 if ( 0 == $minDiff ) return $ts;
 543
 544                 wfSuppressWarnings(); // E_STRICT system time bitching
 545                 # Generate an adjusted date; take advantage of the fact that mktime
 546                 # will normalize out-of-range values so we don't have to split $minDiff
 547                 # into hours and minutes.
 548                 $t = mktime( (
 549                   (int)substr( $ts, 8, 2) ), # Hours
 550                   (int)substr( $ts, 10, 2 ) + $minDiff, # Minutes
 551                   (int)substr( $ts, 12, 2 ), # Seconds
 552                   (int)substr( $ts, 4, 2 ), # Month
 553                   (int)substr( $ts, 6, 2 ), # Day
 554                   (int)substr( $ts, 0, 4 ) ); #Year
 555
 556                 $date = date( 'YmdHis', $t );
 557                 wfRestoreWarnings();
 558
 559                 return $date;
 560         }
 561
 562         /**
 563          * This is a workalike of PHP's date() function, but with better
 564          * internationalisation, a reduced set of format characters, and a better
 565          * escaping format.
 566          *
 567          * Supported format characters are dDjlNwzWFmMntLoYyaAgGhHiscrU. See the
 568          * PHP manual for definitions. "o" format character is supported since
 569          * PHP 5.1.0, previous versions return literal o.
 570          * There are a number of extensions, which start with "x":
 571          *
 572          *    xn   Do not translate digits of the next numeric format character
 573          *    xN   Toggle raw digit (xn) flag, stays set until explicitly unset
 574          *    xr   Use roman numerals for the next numeric format character
 575          *    xh   Use hebrew numerals for the next numeric format character
 576          *    xx   Literal x
 577          *    xg   Genitive month name
 578          *
 579          *    xij  j (day number) in Iranian calendar
 580          *    xiF  F (month name) in Iranian calendar
 581          *    xin  n (month number) in Iranian calendar
 582          *    xiY  Y (full year) in Iranian calendar
 583          *
 584          *    xjj  j (day number) in Hebrew calendar
 585          *    xjF  F (month name) in Hebrew calendar
 586          *    xjt  t (days in month) in Hebrew calendar
 587          *    xjx  xg (genitive month name) in Hebrew calendar
 588          *    xjn  n (month number) in Hebrew calendar
 589          *    xjY  Y (full year) in Hebrew calendar
 590          *
 591          *    xmj  j (day number) in Hijri calendar
 592          *    xmF  F (month name) in Hijri calendar
 593          *    xmn  n (month number) in Hijri calendar
 594          *    xmY  Y (full year) in Hijri calendar
 595          *
 596          *    xkY  Y (full year) in Thai solar calendar. Months and days are
 597          *                       identical to the Gregorian calendar
 598          *
 599          * Characters enclosed in double quotes will be considered literal (with
 600          * the quotes themselves removed). Unmatched quotes will be considered
 601          * literal quotes. Example:
 602          *
 603          * "The month is" F       => The month is January
 604          * i's"                   => 20'11"
 605          *
 606          * Backslash escaping is also supported.
 607          *
 608          * Input timestamp is assumed to be pre-normalized to the desired local
 609          * time zone, if any.
 610          *
 611          * @param $format String
 612          * @param $ts String: 14-character timestamp
 613          *      YYYYMMDDHHMMSS
 614          *      01234567890123
 615          * @todo emulation of "o" format character for PHP pre 5.1.0
 616          * @todo handling of "o" format character for Iranian, Hebrew, Hijri & Thai?
 617          */
 618         function sprintfDate( $format, $ts ) {
 619                 $s = '';
 620                 $raw = false;
 621                 $roman = false;
 622                 $hebrewNum = false;
 623                 $unix = false;
 624                 $rawToggle = false;
 625                 $iranian = false;
 626                 $hebrew = false;
 627                 $hijri = false;
 628                 $thai = false;
 629                 for ( $p = 0; $p < strlen( $format ); $p++ ) {
 630                         $num = false;
 631                         $code = $format[$p];
 632                         if ( $code == 'x' && $p < strlen( $format ) - 1 ) {
 633                                 $code .= $format[++$p];
 634                         }
 635
 636                         if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' ) && $p < strlen( $format ) - 1 ) {
 637                                 $code .= $format[++$p];
 638                         }
 639
 640                         switch ( $code ) {
 641                                 case 'xx':
 642                                         $s .= 'x';
 643                                         break;
 644                                 case 'xn':
 645                                         $raw = true;
 646                                         break;
 647                                 case 'xN':
 648                                         $rawToggle = !$rawToggle;
 649                                         break;
 650                                 case 'xr':
 651                                         $roman = true;
 652                                         break;
 653                                 case 'xh':
 654                                         $hebrewNum = true;
 655                                         break;
 656                                 case 'xg':
 657                                         $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
 658                                         break;
 659                                 case 'xjx':
 660                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 661                                         $s .= $this->getHebrewCalendarMonthNameGen( $hebrew[1] );
 662                                         break;
 663                                 case 'd':
 664                                         $num = substr( $ts, 6, 2 );
 665                                         break;
 666                                 case 'D':
 667                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 668                                         $s .= $this->getWeekdayAbbreviation( gmdate( 'w', $unix ) + 1 );
 669                                         break;
 670                                 case 'j':
 671                                         $num = intval( substr( $ts, 6, 2 ) );
 672                                         break;
 673                                 case 'xij':
 674                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 675                                         $num = $iranian[2];
 676                                         break;
 677                                 case 'xmj':
 678                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 679                                         $num = $hijri[2];
 680                                         break;
 681                                 case 'xjj':
 682                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 683                                         $num = $hebrew[2];
 684                                         break;
 685                                 case 'l':
 686                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 687                                         $s .= $this->getWeekdayName( gmdate( 'w', $unix ) + 1 );
 688                                         break;
 689                                 case 'N':
 690                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 691                                         $w = gmdate( 'w', $unix );
 692                                         $num = $w ? $w : 7;
 693                                         break;
 694                                 case 'w':
 695                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 696                                         $num = gmdate( 'w', $unix );
 697                                         break;
 698                                 case 'z':
 699                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 700                                         $num = gmdate( 'z', $unix );
 701                                         break;
 702                                 case 'W':
 703                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 704                                         $num = gmdate( 'W', $unix );
 705                                         break;
 706                                 case 'F':
 707                                         $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
 708                                         break;
 709                                 case 'xiF':
 710                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 711                                         $s .= $this->getIranianCalendarMonthName( $iranian[1] );
 712                                         break;
 713                                 case 'xmF':
 714                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 715                                         $s .= $this->getHijriCalendarMonthName( $hijri[1] );
 716                                         break;
 717                                 case 'xjF':
 718                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 719                                         $s .= $this->getHebrewCalendarMonthName( $hebrew[1] );
 720                                         break;
 721                                 case 'm':
 722                                         $num = substr( $ts, 4, 2 );
 723                                         break;
 724                                 case 'M':
 725                                         $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
 726                                         break;
 727                                 case 'n':
 728                                         $num = intval( substr( $ts, 4, 2 ) );
 729                                         break;
 730                                 case 'xin':
 731                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 732                                         $num = $iranian[1];
 733                                         break;
 734                                 case 'xmn':
 735                                         if ( !$hijri ) $hijri = self::tsToHijri ( $ts );
 736                                         $num = $hijri[1];
 737                                         break;
 738                                 case 'xjn':
 739                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 740                                         $num = $hebrew[1];
 741                                         break;
 742                                 case 't':
 743                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 744                                         $num = gmdate( 't', $unix );
 745                                         break;
 746                                 case 'xjt':
 747                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 748                                         $num = $hebrew[3];
 749                                         break;
 750                                 case 'L':
 751                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 752                                         $num = gmdate( 'L', $unix );
 753                                         break;
 754                                 # 'o' is supported since PHP 5.1.0
 755                                 # return literal if not supported
 756                                 # TODO: emulation for pre 5.1.0 versions
 757                                 case 'o':
 758                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 759                                         if ( version_compare(PHP_VERSION, '5.1.0') === 1 )
 760                                                 $num = date( 'o', $unix );
 761                                         else
 762                                                 $s .= 'o';
 763                                         break;
 764                                 case 'Y':
 765                                         $num = substr( $ts, 0, 4 );
 766                                         break;
 767                                 case 'xiY':
 768                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 769                                         $num = $iranian[0];
 770                                         break;
 771                                 case 'xmY':
 772                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 773                                         $num = $hijri[0];
 774                                         break;
 775                                 case 'xjY':
 776                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 777                                         $num = $hebrew[0];
 778                                         break;
 779                                 case 'xkY':
 780                                         if ( !$thai ) $thai = self::tsToThai( $ts );
 781                                         $num = $thai[0];
 782                                         break;
 783                                 case 'y':
 784                                         $num = substr( $ts, 2, 2 );
 785                                         break;
 786                                 case 'a':
 787                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'am' : 'pm';
 788                                         break;
 789                                 case 'A':
 790                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'AM' : 'PM';
 791                                         break;
 792                                 case 'g':
 793                                         $h = substr( $ts, 8, 2 );
 794                                         $num = $h % 12 ? $h % 12 : 12;
 795                                         break;
 796                                 case 'G':
 797                                         $num = intval( substr( $ts, 8, 2 ) );
 798                                         break;
 799                                 case 'h':
 800                                         $h = substr( $ts, 8, 2 );
 801                                         $num = sprintf( '%02d', $h % 12 ? $h % 12 : 12 );
 802                                         break;
 803                                 case 'H':
 804                                         $num = substr( $ts, 8, 2 );
 805                                         break;
 806                                 case 'i':
 807                                         $num = substr( $ts, 10, 2 );
 808                                         break;
 809                                 case 's':
 810                                         $num = substr( $ts, 12, 2 );
 811                                         break;
 812                                 case 'c':
 813                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 814                                         $s .= gmdate( 'c', $unix );
 815                                         break;
 816                                 case 'r':
 817                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 818                                         $s .= gmdate( 'r', $unix );
 819                                         break;
 820                                 case 'U':
 821                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 822                                         $num = $unix;
 823                                         break;
 824                                 case '\\':
 825                                         # Backslash escaping
 826                                         if ( $p < strlen( $format ) - 1 ) {
 827                                                 $s .= $format[++$p];
 828                                         } else {
 829                                                 $s .= '\\';
 830                                         }
 831                                         break;
 832                                 case '"':
 833                                         # Quoted literal
 834                                         if ( $p < strlen( $format ) - 1 ) {
 835                                                 $endQuote = strpos( $format, '"', $p + 1 );
 836                                                 if ( $endQuote === false ) {
 837                                                         # No terminating quote, assume literal "
 838                                                         $s .= '"';
 839                                                 } else {
 840                                                         $s .= substr( $format, $p + 1, $endQuote - $p - 1 );
 841                                                         $p = $endQuote;
 842                                                 }
 843                                         } else {
 844                                                 # Quote at end of string, assume literal "
 845                                                 $s .= '"';
 846                                         }
 847                                         break;
 848                                 default:
 849                                         $s .= $format[$p];
 850                         }
 851                         if ( $num !== false ) {
 852                                 if ( $rawToggle || $raw ) {
 853                                         $s .= $num;
 854                                         $raw = false;
 855                                 } elseif ( $roman ) {
 856                                         $s .= self::romanNumeral( $num );
 857                                         $roman = false;
 858                                 } elseif( $hebrewNum ) {
 859                                         $s .= self::hebrewNumeral( $num );
 860                                         $hebrewNum = false;
 861                                 } else {
 862                                         $s .= $this->formatNum( $num, true );
 863                                 }
 864                                 $num = false;
 865                         }
 866                 }
 867                 return $s;
 868         }
 869
 870         private static $GREG_DAYS = array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
 871         private static $IRANIAN_DAYS = array( 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29 );
 872         /**
 873          * Algorithm by Roozbeh Pournader and Mohammad Toossi to convert
 874          * Gregorian dates to Iranian dates. Originally written in C, it
 875          * is released under the terms of GNU Lesser General Public
 876          * License. Conversion to PHP was performed by Niklas Laxström.
 877          *
 878          * Link: http://www.farsiweb.info/jalali/jalali.c
 879          */
 880         private static function tsToIranian( $ts ) {
 881                 $gy = substr( $ts, 0, 4 ) -1600;
 882                 $gm = substr( $ts, 4, 2 ) -1;
 883                 $gd = substr( $ts, 6, 2 ) -1;
 884
 885                 # Days passed from the beginning (including leap years)
 886                 $gDayNo = 365*$gy
 887                         + floor(($gy+3) / 4)
 888                         - floor(($gy+99) / 100)
 889                         + floor(($gy+399) / 400);
 890
 891
 892                 // Add days of the past months of this year
 893                 for( $i = 0; $i < $gm; $i++ ) {
 894                         $gDayNo += self::$GREG_DAYS[$i];
 895                 }
 896
 897                 // Leap years
 898                 if ( $gm > 1 && (($gy%4===0 && $gy%100!==0 || ($gy%400==0)))) {
 899                         $gDayNo++;
 900                 }
 901
 902                 // Days passed in current month
 903                 $gDayNo += $gd;
 904
 905                 $jDayNo = $gDayNo - 79;
 906
 907                 $jNp = floor($jDayNo / 12053);
 908                 $jDayNo %= 12053;
 909
 910                 $jy = 979 + 33*$jNp + 4*floor($jDayNo/1461);
 911                 $jDayNo %= 1461;
 912
 913                 if ( $jDayNo >= 366 ) {
 914                         $jy += floor(($jDayNo-1)/365);
 915                         $jDayNo = floor(($jDayNo-1)%365);
 916                 }
 917
 918                 for ( $i = 0; $i < 11 && $jDayNo >= self::$IRANIAN_DAYS[$i]; $i++ ) {
 919                         $jDayNo -= self::$IRANIAN_DAYS[$i];
 920                 }
 921
 922                 $jm= $i+1;
 923                 $jd= $jDayNo+1;
 924
 925                 return array($jy, $jm, $jd);
 926         }
 927         /**
 928          * Converting Gregorian dates to Hijri dates.
 929          *
 930          * Based on a PHP-Nuke block by Sharjeel which is released under GNU/GPL license
 931          *
 932          * @link http://phpnuke.org/modules.php?name=News&file=article&sid=8234&mode=thread&order=0&thold=0
 933          */
 934         private static function tsToHijri ( $ts ) {
 935                 $year = substr( $ts, 0, 4 );
 936                 $month = substr( $ts, 4, 2 );
 937                 $day = substr( $ts, 6, 2 );
 938
 939                 $zyr = $year;
 940                 $zd=$day;
 941                 $zm=$month;
 942                 $zy=$zyr;
 943
 944
 945
 946                 if (($zy>1582)||(($zy==1582)&&($zm>10))||(($zy==1582)&&($zm==10)&&($zd>14)))
 947                         {
 948
 949
 950                                     $zjd=(int)((1461*($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;
 951                                     }
 952                  else
 953                         {
 954                                     $zjd = 367*$zy-(int)((7*($zy+5001+(int)(($zm-9)/7)))/4)+(int)((275*$zm)/9)+$zd+1729777;
 955                         }
 956
 957                 $zl=$zjd-1948440+10632;
 958                 $zn=(int)(($zl-1)/10631);
 959                 $zl=$zl-10631*$zn+354;
 960                 $zj=((int)((10985-$zl)/5316))*((int)((50*$zl)/17719))+((int)($zl/5670))*((int)((43*$zl)/15238));
 961                 $zl=$zl-((int)((30-$zj)/15))*((int)((17719*$zj)/50))-((int)($zj/16))*((int)((15238*$zj)/43))+29;
 962                 $zm=(int)((24*$zl)/709);
 963                 $zd=$zl-(int)((709*$zm)/24);
 964                 $zy=30*$zn+$zj-30;
 965
 966                 return array ($zy, $zm, $zd);
 967         }
 968
 969         /**
 970          * Converting Gregorian dates to Hebrew dates.
 971          *
 972          * Based on a JavaScript code by Abu Mami and Yisrael Hersch
 973          * (abu-mami@kaluach.net, http://www.kaluach.net), who permitted
 974          * to translate the relevant functions into PHP and release them under
 975          * GNU GPL.
 976          *
 977          * The months are counted from Tishrei = 1. In a leap year, Adar I is 13
 978          * and Adar II is 14. In a non-leap year, Adar is 6.
 979          */
 980         private static function tsToHebrew( $ts ) {
 981                 # Parse date
 982                 $year = substr( $ts, 0, 4 );
 983                 $month = substr( $ts, 4, 2 );
 984                 $day = substr( $ts, 6, 2 );
 985
 986                 # Calculate Hebrew year
 987                 $hebrewYear = $year + 3760;
 988
 989                 # Month number when September = 1, August = 12
 990                 $month += 4;
 991                 if( $month > 12 ) {
 992                         # Next year
 993                         $month -= 12;
 994                         $year++;
 995                         $hebrewYear++;
 996                 }
 997
 998                 # Calculate day of year from 1 September
 999                 $dayOfYear = $day;
1000                 for( $i = 1; $i < $month; $i++ ) {
1001                         if( $i == 6 ) {
1002                                 # February
1003                                 $dayOfYear += 28;
1004                                 # Check if the year is leap
1005                                 if( $year % 400 == 0 || ( $year % 4 == 0 && $year % 100 > 0 ) ) {
1006                                         $dayOfYear++;
1007                                 }
1008                         } elseif( $i == 8 || $i == 10 || $i == 1 || $i == 3 ) {
1009                                 $dayOfYear += 30;
1010                         } else {
1011                                 $dayOfYear += 31;
1012                         }
1013                 }
1014
1015                 # Calculate the start of the Hebrew year
1016                 $start = self::hebrewYearStart( $hebrewYear );
1017
1018                 # Calculate next year's start
1019                 if( $dayOfYear <= $start ) {
1020                         # Day is before the start of the year - it is the previous year
1021                         # Next year's start
1022                         $nextStart = $start;
1023                         # Previous year
1024                         $year--;
1025                         $hebrewYear--;
1026                         # Add days since previous year's 1 September
1027                         $dayOfYear += 365;
1028                         if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
1029                                 # Leap year
1030                                 $dayOfYear++;
1031                         }
1032                         # Start of the new (previous) year
1033                         $start = self::hebrewYearStart( $hebrewYear );
1034                 } else {
1035                         # Next year's start
1036                         $nextStart = self::hebrewYearStart( $hebrewYear + 1 );
1037                 }
1038
1039                 # Calculate Hebrew day of year
1040                 $hebrewDayOfYear = $dayOfYear - $start;
1041
1042                 # Difference between year's days
1043                 $diff = $nextStart - $start;
1044                 # Add 12 (or 13 for leap years) days to ignore the difference between
1045                 # Hebrew and Gregorian year (353 at least vs. 365/6) - now the
1046                 # difference is only about the year type
1047                 if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
1048                         $diff += 13;
1049                 } else {
1050                         $diff += 12;
1051                 }
1052
1053                 # Check the year pattern, and is leap year
1054                 # 0 means an incomplete year, 1 means a regular year, 2 means a complete year
1055                 # This is mod 30, to work on both leap years (which add 30 days of Adar I)
1056                 # and non-leap years
1057                 $yearPattern = $diff % 30;
1058                 # Check if leap year
1059                 $isLeap = $diff >= 30;
1060
1061                 # Calculate day in the month from number of day in the Hebrew year
1062                 # Don't check Adar - if the day is not in Adar, we will stop before;
1063                 # if it is in Adar, we will use it to check if it is Adar I or Adar II
1064                 $hebrewDay = $hebrewDayOfYear;
1065                 $hebrewMonth = 1;
1066                 $days = 0;
1067                 while( $hebrewMonth <= 12 ) {
1068                         # Calculate days in this month
1069                         if( $isLeap && $hebrewMonth == 6 ) {
1070                                 # Adar in a leap year
1071                                 if( $isLeap ) {
1072                                         # Leap year - has Adar I, with 30 days, and Adar II, with 29 days
1073                                         $days = 30;
1074                                         if( $hebrewDay <= $days ) {
1075                                                 # Day in Adar I
1076                                                 $hebrewMonth = 13;
1077                                         } else {
1078                                                 # Subtract the days of Adar I
1079                                                 $hebrewDay -= $days;
1080                                                 # Try Adar II
1081                                                 $days = 29;
1082                                                 if( $hebrewDay <= $days ) {
1083                                                         # Day in Adar II
1084                                                         $hebrewMonth = 14;
1085                                                 }
1086                                         }
1087                                 }
1088                         } elseif( $hebrewMonth == 2 && $yearPattern == 2 ) {
1089                                 # Cheshvan in a complete year (otherwise as the rule below)
1090                                 $days = 30;
1091                         } elseif( $hebrewMonth == 3 && $yearPattern == 0 ) {
1092                                 # Kislev in an incomplete year (otherwise as the rule below)
1093                                 $days = 29;
1094                         } else {
1095                                 # Odd months have 30 days, even have 29
1096                                 $days = 30 - ( $hebrewMonth - 1 ) % 2;
1097                         }
1098                         if( $hebrewDay <= $days ) {
1099                                 # In the current month
1100                                 break;
1101                         } else {
1102                                 # Subtract the days of the current month
1103                                 $hebrewDay -= $days;
1104                                 # Try in the next month
1105                                 $hebrewMonth++;
1106                         }
1107                 }
1108
1109                 return array( $hebrewYear, $hebrewMonth, $hebrewDay, $days );
1110         }
1111
1112         /**
1113          * This calculates the Hebrew year start, as days since 1 September.
1114          * Based on Carl Friedrich Gauss algorithm for finding Easter date.
1115          * Used for Hebrew date.
1116          */
1117         private static function hebrewYearStart( $year ) {
1118                 $a = intval( ( 12 * ( $year - 1 ) + 17 ) % 19 );
1119                 $b = intval( ( $year - 1 ) % 4 );
1120                 $m = 32.044093161144 + 1.5542417966212 * $a +  $b / 4.0 - 0.0031777940220923 * ( $year - 1 );
1121                 if( $m < 0 ) {
1122                         $m--;
1123                 }
1124                 $Mar = intval( $m );
1125                 if( $m < 0 ) {
1126                         $m++;
1127                 }
1128                 $m -= $Mar;
1129
1130                 $c = intval( ( $Mar + 3 * ( $year - 1 ) + 5 * $b + 5 ) % 7);
1131                 if( $c == 0 && $a > 11 && $m >= 0.89772376543210 ) {
1132                         $Mar++;
1133                 } else if( $c == 1 && $a > 6 && $m >= 0.63287037037037 ) {
1134                         $Mar += 2;
1135                 } else if( $c == 2 || $c == 4 || $c == 6 ) {
1136                         $Mar++;
1137                 }
1138
1139                 $Mar += intval( ( $year - 3761 ) / 100 ) - intval( ( $year - 3761 ) / 400 ) - 24;
1140                 return $Mar;
1141         }
1142
1143         /**
1144          * Algorithm to convert Gregorian dates to Thai solar dates.
1145          *
1146          * Link: http://en.wikipedia.org/wiki/Thai_solar_calendar
1147          *
1148          * @param $ts String: 14-character timestamp
1149          * @return array converted year, month, day
1150          */
1151         private static function tsToThai( $ts ) {
1152                 $gy = substr( $ts, 0, 4 );
1153                 $gm = substr( $ts, 4, 2 );
1154                 $gd = substr( $ts, 6, 2 );
1155
1156                 # Add 543 years to the Gregorian calendar
1157                 # Months and days are identical
1158                 $gy_thai = $gy + 543;
1159
1160                 return array( $gy_thai, $gm, $gd );
1161         }
1162
1163
1164         /**
1165          * Roman number formatting up to 3000
1166          */
1167         static function romanNumeral( $num ) {
1168                 static $table = array(
1169                         array( '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X' ),
1170                         array( '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', 'C' ),
1171                         array( '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM', 'M' ),
1172                         array( '', 'M', 'MM', 'MMM' )
1173                 );
1174
1175                 $num = intval( $num );
1176                 if ( $num > 3000 || $num <= 0 ) {
1177                         return $num;
1178                 }
1179
1180                 $s = '';
1181                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1182                         if ( $num >= $pow10 ) {
1183                                 $s .= $table[$i][floor($num / $pow10)];
1184                         }
1185                         $num = $num % $pow10;
1186                 }
1187                 return $s;
1188         }
1189
1190         /**
1191          * Hebrew Gematria number formatting up to 9999
1192          */
1193         static function hebrewNumeral( $num ) {
1194                 static $table = array(
1195                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' ),
1196                         array( '', 'י', 'כ', 'ל', 'מ', 'נ', 'ס', 'ע', 'פ', 'צ', 'ק' ),
1197                         array( '', 'ק', 'ר', 'ש', 'ת', 'תק', 'תר', 'תש', 'תת', 'תתק', 'תתר' ),
1198                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' )
1199                 );
1200
1201                 $num = intval( $num );
1202                 if ( $num > 9999 || $num <= 0 ) {
1203                         return $num;
1204                 }
1205
1206                 $s = '';
1207                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1208                         if ( $num >= $pow10 ) {
1209                                 if ( $num == 15 || $num == 16 ) {
1210                                         $s .= $table[0][9] . $table[0][$num - 9];
1211                                         $num = 0;
1212                                 } else {
1213                                         $s .= $table[$i][intval( ( $num / $pow10 ) )];
1214                                         if( $pow10 == 1000 ) {
1215                                                 $s .= "'";
1216                                         }
1217                                 }
1218                         }
1219                         $num = $num % $pow10;
1220                 }
1221                 if( strlen( $s ) == 2 ) {
1222                         $str = $s . "'";
1223                 } else  {
1224                         $str = substr( $s, 0, strlen( $s ) - 2 ) . '"';
1225                         $str .= substr( $s, strlen( $s ) - 2, 2 );
1226                 }
1227                 $start = substr( $str, 0, strlen( $str ) - 2 );
1228                 $end = substr( $str, strlen( $str ) - 2 );
1229                 switch( $end ) {
1230                         case 'כ':
1231                                 $str = $start . 'ך';
1232                                 break;
1233                         case 'מ':
1234                                 $str = $start . 'ם';
1235                                 break;
1236                         case 'נ':
1237                                 $str = $start . 'ן';
1238                                 break;
1239                         case 'פ':
1240                                 $str = $start . 'ף';
1241                                 break;
1242                         case 'צ':
1243                                 $str = $start . 'ץ';
1244                                 break;
1245                 }
1246                 return $str;
1247         }
1248
1249         /**
1250          * This is meant to be used by time(), date(), and timeanddate() to get
1251          * the date preference they're supposed to use, it should be used in
1252          * all children.
1253          *
1254          *<code>
1255          * function timeanddate([...], $format = true) {
1256          *      $datePreference = $this->dateFormat($format);
1257          * [...]
1258          * }
1259          *</code>
1260          *
1261          * @param $usePrefs Mixed: if true, the user's preference is used
1262          *                         if false, the site/language default is used
1263          *                         if int/string, assumed to be a format.
1264          * @return string
1265          */
1266         function dateFormat( $usePrefs = true ) {
1267                 global $wgUser;
1268
1269                 if( is_bool( $usePrefs ) ) {
1270                         if( $usePrefs ) {
1271                                 $datePreference = $wgUser->getDatePreference();
1272                         } else {
1273                                 $options = User::getDefaultOptions();
1274                                 $datePreference = (string)$options['date'];
1275                         }
1276                 } else {
1277                         $datePreference = (string)$usePrefs;
1278                 }
1279
1280                 // return int
1281                 if( $datePreference == '' ) {
1282                         return 'default';
1283                 }
1284
1285                 return $datePreference;
1286         }
1287
1288         /**
1289          * @param $ts Mixed: the time format which needs to be turned into a
1290          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1291          * @param $adj Bool: whether to adjust the time output according to the
1292          *             user configured offset ($timecorrection)
1293          * @param $format Mixed: true to use user's date format preference
1294          * @param $timecorrection String: the time offset as returned by
1295          *                        validateTimeZone() in Special:Preferences
1296          * @return string
1297          */
1298         function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
1299                 $this->load();
1300                 if ( $adj ) {
1301                         $ts = $this->userAdjust( $ts, $timecorrection );
1302                 }
1303
1304                 $pref = $this->dateFormat( $format );
1305                 if( $pref == 'default' || !isset( $this->dateFormats["$pref date"] ) ) {
1306                         $pref = $this->defaultDateFormat;
1307                 }
1308                 return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
1309         }
1310
1311         /**
1312          * @param $ts Mixed: the time format which needs to be turned into a
1313          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1314          * @param $adj Bool: whether to adjust the time output according to the
1315          *             user configured offset ($timecorrection)
1316          * @param $format Mixed: true to use user's date format preference
1317          * @param $timecorrection String: the time offset as returned by
1318          *                        validateTimeZone() in Special:Preferences
1319          * @return string
1320          */
1321         function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
1322                 $this->load();
1323                 if ( $adj ) {
1324                         $ts = $this->userAdjust( $ts, $timecorrection );
1325                 }
1326
1327                 $pref = $this->dateFormat( $format );
1328                 if( $pref == 'default' || !isset( $this->dateFormats["$pref time"] ) ) {
1329                         $pref = $this->defaultDateFormat;
1330                 }
1331                 return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
1332         }
1333
1334         /**
1335          * @param $ts Mixed: the time format which needs to be turned into a
1336          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1337          * @param $adj Bool: whether to adjust the time output according to the
1338          *             user configured offset ($timecorrection)
1339          * @param $format Mixed: what format to return, if it's false output the
1340          *                default one (default true)
1341          * @param $timecorrection String: the time offset as returned by
1342          *                        validateTimeZone() in Special:Preferences
1343          * @return string
1344          */
1345         function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false) {
1346                 $this->load();
1347
1348                 $ts = wfTimestamp( TS_MW, $ts );
1349
1350                 if ( $adj ) {
1351                         $ts = $this->userAdjust( $ts, $timecorrection );
1352                 }
1353
1354                 $pref = $this->dateFormat( $format );
1355                 if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
1356                         $pref = $this->defaultDateFormat;
1357                 }
1358
1359                 return $this->sprintfDate( $this->dateFormats["$pref both"], $ts );
1360         }
1361
1362         function getMessage( $key ) {
1363                 $this->load();
1364                 return isset( $this->messages[$key] ) ? $this->messages[$key] : null;
1365         }
1366
1367         function getAllMessages() {
1368                 $this->load();
1369                 return $this->messages;
1370         }
1371
1372         function iconv( $in, $out, $string ) {
1373                 # For most languages, this is a wrapper for iconv
1374                 return iconv( $in, $out . '//IGNORE', $string );
1375         }
1376
1377         // callback functions for uc(), lc(), ucwords(), ucwordbreaks()
1378         function ucwordbreaksCallbackAscii($matches){
1379                 return $this->ucfirst($matches[1]);
1380         }
1381
1382         function ucwordbreaksCallbackMB($matches){
1383                 return mb_strtoupper($matches[0]);
1384         }
1385
1386         function ucCallback($matches){
1387                 list( $wikiUpperChars ) = self::getCaseMaps();
1388                 return strtr( $matches[1], $wikiUpperChars );
1389         }
1390
1391         function lcCallback($matches){
1392                 list( , $wikiLowerChars ) = self::getCaseMaps();
1393                 return strtr( $matches[1], $wikiLowerChars );
1394         }
1395
1396         function ucwordsCallbackMB($matches){
1397                 return mb_strtoupper($matches[0]);
1398         }
1399
1400         function ucwordsCallbackWiki($matches){
1401                 list( $wikiUpperChars ) = self::getCaseMaps();
1402                 return strtr( $matches[0], $wikiUpperChars );
1403         }
1404
1405         function ucfirst( $str ) {
1406                 if ( empty($str) ) return $str;
1407                 if ( ord($str[0]) < 128 ) return ucfirst($str);
1408                 else return self::uc($str,true); // fall back to more complex logic in case of multibyte strings
1409         }
1410
1411         function uc( $str, $first = false ) {
1412                 if ( function_exists( 'mb_strtoupper' ) ) {
1413                         if ( $first ) {
1414                                 if ( self::isMultibyte( $str ) ) {
1415                                         return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1416                                 } else {
1417                                         return ucfirst( $str );
1418                                 }
1419                         } else {
1420                                 return self::isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
1421                         }
1422                 } else {
1423                         if ( self::isMultibyte( $str ) ) {
1424                                 list( $wikiUpperChars ) = $this->getCaseMaps();
1425                                 $x = $first ? '^' : '';
1426                                 return preg_replace_callback(
1427                                         "/$x([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1428                                         array($this,"ucCallback"),
1429                                         $str
1430                                 );
1431                         } else {
1432                                 return $first ? ucfirst( $str ) : strtoupper( $str );
1433                         }
1434                 }
1435         }
1436
1437         function lcfirst( $str ) {
1438                 if ( empty($str) ) return $str;
1439                 if ( is_string( $str ) && ord($str[0]) < 128 ) {
1440                         // editing string in place = cool
1441                         $str[0]=strtolower($str[0]);
1442                         return $str;
1443                 }
1444                 else return self::lc( $str, true );
1445         }
1446
1447         function lc( $str, $first = false ) {
1448                 if ( function_exists( 'mb_strtolower' ) )
1449                         if ( $first )
1450                                 if ( self::isMultibyte( $str ) )
1451                                         return mb_strtolower( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1452                                 else
1453                                         return strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 );
1454                         else
1455                                 return self::isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
1456                 else
1457                         if ( self::isMultibyte( $str ) ) {
1458                                 list( , $wikiLowerChars ) = self::getCaseMaps();
1459                                 $x = $first ? '^' : '';
1460                                 return preg_replace_callback(
1461                                         "/$x([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1462                                         array($this,"lcCallback"),
1463                                         $str
1464                                 );
1465                         } else
1466                                 return $first ? strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 ) : strtolower( $str );
1467         }
1468
1469         function isMultibyte( $str ) {
1470                 return (bool)preg_match( '/[\x80-\xff]/', $str );
1471         }
1472
1473         function ucwords($str) {
1474                 if ( self::isMultibyte( $str ) ) {
1475                         $str = self::lc($str);
1476
1477                         // regexp to find first letter in each word (i.e. after each space)
1478                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)| ([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1479
1480                         // function to use to capitalize a single char
1481                         if ( function_exists( 'mb_strtoupper' ) )
1482                                 return preg_replace_callback(
1483                                         $replaceRegexp,
1484                                         array($this,"ucwordsCallbackMB"),
1485                                         $str
1486                                 );
1487                         else
1488                                 return preg_replace_callback(
1489                                         $replaceRegexp,
1490                                         array($this,"ucwordsCallbackWiki"),
1491                                         $str
1492                                 );
1493                 }
1494                 else
1495                         return ucwords( strtolower( $str ) );
1496         }
1497
1498   # capitalize words at word breaks
1499         function ucwordbreaks($str){
1500                 if (self::isMultibyte( $str ) ) {
1501                         $str = self::lc($str);
1502
1503                         // since \b doesn't work for UTF-8, we explicitely define word break chars
1504                         $breaks= "[ \-\(\)\}\{\.,\?!]";
1505
1506                         // find first letter after word break
1507                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)|$breaks([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1508
1509                         if ( function_exists( 'mb_strtoupper' ) )
1510                                 return preg_replace_callback(
1511                                         $replaceRegexp,
1512                                         array($this,"ucwordbreaksCallbackMB"),
1513                                         $str
1514                                 );
1515                         else
1516                                 return preg_replace_callback(
1517                                         $replaceRegexp,
1518                                         array($this,"ucwordsCallbackWiki"),
1519                                         $str
1520                                 );
1521                 }
1522                 else
1523                         return preg_replace_callback(
1524                         '/\b([\w\x80-\xff]+)\b/',
1525                         array($this,"ucwordbreaksCallbackAscii"),
1526                         $str );
1527         }
1528
1529         /**
1530          * Return a case-folded representation of $s
1531          *
1532          * This is a representation such that caseFold($s1)==caseFold($s2) if $s1
1533          * and $s2 are the same except for the case of their characters. It is not
1534          * necessary for the value returned to make sense when displayed.
1535          *
1536          * Do *not* perform any other normalisation in this function. If a caller
1537          * uses this function when it should be using a more general normalisation
1538          * function, then fix the caller.
1539          */
1540         function caseFold( $s ) {
1541                 return $this->uc( $s );
1542         }
1543
1544         function checkTitleEncoding( $s ) {
1545                 if( is_array( $s ) ) {
1546                         wfDebugDieBacktrace( 'Given array to checkTitleEncoding.' );
1547                 }
1548                 # Check for non-UTF-8 URLs
1549                 $ishigh = preg_match( '/[\x80-\xff]/', $s);
1550                 if(!$ishigh) return $s;
1551
1552                 $isutf8 = preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1553                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})+$/', $s );
1554                 if( $isutf8 ) return $s;
1555
1556                 return $this->iconv( $this->fallback8bitEncoding(), "utf-8", $s );
1557         }
1558
1559         function fallback8bitEncoding() {
1560                 $this->load();
1561                 return $this->fallback8bitEncoding;
1562         }
1563
1564         /**
1565          * Some languages have special punctuation to strip out
1566          * or characters which need to be converted for MySQL's
1567          * indexing to grok it correctly. Make such changes here.
1568          *
1569          * @param $string String
1570          * @return String
1571          */
1572         function stripForSearch( $string ) {
1573                 global $wgDBtype;
1574                 if ( $wgDBtype != 'mysql' ) {
1575                         return $string;
1576                 }
1577
1578
1579                 wfProfileIn( __METHOD__ );
1580
1581                 // MySQL fulltext index doesn't grok utf-8, so we
1582                 // need to fold cases and convert to hex
1583                 $out = preg_replace_callback(
1584                         "/([\\xc0-\\xff][\\x80-\\xbf]*)/",
1585                         array( $this, 'stripForSearchCallback' ),
1586                         $this->lc( $string ) );
1587
1588                 // And to add insult to injury, the default indexing
1589                 // ignores short words... Pad them so we can pass them
1590                 // through without reconfiguring the server...
1591                 $minLength = $this->minSearchLength();
1592                 if( $minLength > 1 ) {
1593                         $n = $minLength-1;
1594                         $out = preg_replace(
1595                                 "/\b(\w{1,$n})\b/",
1596                                 "$1U800",
1597                                 $out );
1598                 }
1599
1600                 // Periods within things like hostnames and IP addresses
1601                 // are also important -- we want a search for "example.com"
1602                 // or "192.168.1.1" to work sanely.
1603                 //
1604                 // MySQL's search seems to ignore them, so you'd match on
1605                 // "example.wikipedia.com" and "192.168.83.1" as well.
1606                 $out = preg_replace(
1607                         "/(\w)\.(\w|\*)/u",
1608                         "$1U82e$2",
1609                         $out );
1610
1611                 wfProfileOut( __METHOD__ );
1612                 return $out;
1613         }
1614
1615         /**
1616          * Armor a case-folded UTF-8 string to get through MySQL's
1617          * fulltext search without being mucked up by funny charset
1618          * settings or anything else of the sort.
1619          */
1620         protected function stripForSearchCallback( $matches ) {
1621                 return 'U8' . bin2hex( $matches[1] );
1622         }
1623
1624         /**
1625          * Check MySQL server's ft_min_word_len setting so we know
1626          * if we need to pad short words...
1627          */
1628         protected function minSearchLength() {
1629                 if( !isset( $this->minSearchLength ) ) {
1630                         $sql = "show global variables like 'ft\\_min\\_word\\_len'";
1631                         $dbr = wfGetDB( DB_SLAVE );
1632                         $result = $dbr->query( $sql );
1633                         $row = $result->fetchObject();
1634                         $result->free();
1635
1636                         if( $row && $row->Variable_name == 'ft_min_word_len' ) {
1637                                 $this->minSearchLength = intval( $row->Value );
1638                         } else {
1639                                 $this->minSearchLength = 0;
1640                         }
1641                 }
1642                 return $this->minSearchLength;
1643         }
1644
1645         function convertForSearchResult( $termsArray ) {
1646                 # some languages, e.g. Chinese, need to do a conversion
1647                 # in order for search results to be displayed correctly
1648                 return $termsArray;
1649         }
1650
1651         /**
1652          * Get the first character of a string.
1653          *
1654          * @param $s string
1655          * @return string
1656          */
1657         function firstChar( $s ) {
1658                 $matches = array();
1659                 preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1660                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})/', $s, $matches);
1661
1662                 if ( isset( $matches[1] ) ) {
1663                         if ( strlen( $matches[1] ) != 3 ) {
1664                                 return $matches[1];
1665                         }
1666
1667                         // Break down Hangul syllables to grab the first jamo
1668                         $code = utf8ToCodepoint( $matches[1] );
1669                         if ( $code < 0xac00 || 0xd7a4 <= $code) {
1670                                 return $matches[1];
1671                         } elseif ( $code < 0xb098 ) {
1672                                 return "\xe3\x84\xb1";
1673                         } elseif ( $code < 0xb2e4 ) {
1674                                 return "\xe3\x84\xb4";
1675                         } elseif ( $code < 0xb77c ) {
1676                                 return "\xe3\x84\xb7";
1677                         } elseif ( $code < 0xb9c8 ) {
1678                                 return "\xe3\x84\xb9";
1679                         } elseif ( $code < 0xbc14 ) {
1680                                 return "\xe3\x85\x81";
1681                         } elseif ( $code < 0xc0ac ) {
1682                                 return "\xe3\x85\x82";
1683                         } elseif ( $code < 0xc544 ) {
1684                                 return "\xe3\x85\x85";
1685                         } elseif ( $code < 0xc790 ) {
1686                                 return "\xe3\x85\x87";
1687                         } elseif ( $code < 0xcc28 ) {
1688                                 return "\xe3\x85\x88";
1689                         } elseif ( $code < 0xce74 ) {
1690                                 return "\xe3\x85\x8a";
1691                         } elseif ( $code < 0xd0c0 ) {
1692                                 return "\xe3\x85\x8b";
1693                         } elseif ( $code < 0xd30c ) {
1694                                 return "\xe3\x85\x8c";
1695                         } elseif ( $code < 0xd558 ) {
1696                                 return "\xe3\x85\x8d";
1697                         } else {
1698                                 return "\xe3\x85\x8e";
1699                         }
1700                 } else {
1701                         return "";
1702                 }
1703         }
1704
1705         function initEncoding() {
1706                 # Some languages may have an alternate char encoding option
1707                 # (Esperanto X-coding, Japanese furigana conversion, etc)
1708                 # If this language is used as the primary content language,
1709                 # an override to the defaults can be set here on startup.
1710         }
1711
1712         function recodeForEdit( $s ) {
1713                 # For some languages we'll want to explicitly specify
1714                 # which characters make it into the edit box raw
1715                 # or are converted in some way or another.
1716                 # Note that if wgOutputEncoding is different from
1717                 # wgInputEncoding, this text will be further converted
1718                 # to wgOutputEncoding.
1719                 global $wgEditEncoding;
1720                 if( $wgEditEncoding == '' or
1721                   $wgEditEncoding == 'UTF-8' ) {
1722                         return $s;
1723                 } else {
1724                         return $this->iconv( 'UTF-8', $wgEditEncoding, $s );
1725                 }
1726         }
1727
1728         function recodeInput( $s ) {
1729                 # Take the previous into account.
1730                 global $wgEditEncoding;
1731                 if($wgEditEncoding != "") {
1732                         $enc = $wgEditEncoding;
1733                 } else {
1734                         $enc = 'UTF-8';
1735                 }
1736                 if( $enc == 'UTF-8' ) {
1737                         return $s;
1738                 } else {
1739                         return $this->iconv( $enc, 'UTF-8', $s );
1740                 }
1741         }
1742
1743         /**
1744          * For right-to-left language support
1745          *
1746          * @return bool
1747          */
1748         function isRTL() {
1749                 $this->load();
1750                 return $this->rtl;
1751         }
1752
1753         /**
1754          * A hidden direction mark (LRM or RLM), depending on the language direction
1755          *
1756          * @return string
1757          */
1758         function getDirMark() {
1759                 return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
1760         }
1761
1762         /**
1763          * An arrow, depending on the language direction
1764          *
1765          * @return string
1766          */
1767         function getArrow() {
1768                 return $this->isRTL() ? '←' : '→';
1769         }
1770
1771         /**
1772          * To allow "foo[[bar]]" to extend the link over the whole word "foobar"
1773          *
1774          * @return bool
1775          */
1776         function linkPrefixExtension() {
1777                 $this->load();
1778                 return $this->linkPrefixExtension;
1779         }
1780
1781         function &getMagicWords() {
1782                 $this->load();
1783                 return $this->magicWords;
1784         }
1785
1786         # Fill a MagicWord object with data from here
1787         function getMagic( &$mw ) {
1788                 if ( !$this->mMagicHookDone ) {
1789                         $this->mMagicHookDone = true;
1790                         wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
1791                 }
1792                 if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
1793                         $rawEntry = $this->mMagicExtensions[$mw->mId];
1794                 } else {
1795                         $magicWords =& $this->getMagicWords();
1796                         if ( isset( $magicWords[$mw->mId] ) ) {
1797                                 $rawEntry = $magicWords[$mw->mId];
1798                         } else {
1799                                 # Fall back to English if local list is incomplete
1800                                 $magicWords =& Language::getMagicWords();
1801                                 if ( !isset($magicWords[$mw->mId]) ) {
1802                                         throw new MWException("Magic word '{$mw->mId}' not found" );
1803                                 }
1804                                 $rawEntry = $magicWords[$mw->mId];
1805                         }
1806                 }
1807
1808                 if( !is_array( $rawEntry ) ) {
1809                         error_log( "\"$rawEntry\" is not a valid magic thingie for \"$mw->mId\"" );
1810                 } else {
1811                         $mw->mCaseSensitive = $rawEntry[0];
1812                         $mw->mSynonyms = array_slice( $rawEntry, 1 );
1813                 }
1814         }
1815
1816         /**
1817          * Add magic words to the extension array
1818          */
1819         function addMagicWordsByLang( $newWords ) {
1820                 $code = $this->getCode();
1821                 $fallbackChain = array();
1822                 while ( $code && !in_array( $code, $fallbackChain ) ) {
1823                         $fallbackChain[] = $code;
1824                         $code = self::getFallbackFor( $code );
1825                 }
1826                 if ( !in_array( 'en', $fallbackChain ) ) {
1827                         $fallbackChain[] = 'en';
1828                 }
1829                 $fallbackChain = array_reverse( $fallbackChain );
1830                 foreach ( $fallbackChain as $code ) {
1831                         if ( isset( $newWords[$code] ) ) {
1832                                 $this->mMagicExtensions = $newWords[$code] + $this->mMagicExtensions;
1833                         }
1834                 }
1835         }
1836
1837         /**
1838          * Get special page names, as an associative array
1839          *   case folded alias => real name
1840          */
1841         function getSpecialPageAliases() {
1842                 $this->load();
1843
1844                 // Cache aliases because it may be slow to load them
1845                 if ( !isset( $this->mExtendedSpecialPageAliases ) ) {
1846
1847                         // Initialise array
1848                         $this->mExtendedSpecialPageAliases = $this->specialPageAliases;
1849
1850                         global $wgExtensionAliasesFiles;
1851                         foreach ( $wgExtensionAliasesFiles as $file ) {
1852
1853                                 // Fail fast
1854                                 if ( !file_exists($file) )
1855                                         throw new MWException( "Aliases file does not exist: $file" );
1856
1857                                 $aliases = array();
1858                                 require($file);
1859
1860                                 // Check the availability of aliases
1861                                 if ( !isset($aliases['en']) )
1862                                         throw new MWException( "Malformed aliases file: $file" );
1863
1864                                 // Merge all aliases in fallback chain
1865                                 $code = $this->getCode();
1866                                 do {
1867                                         if ( !isset($aliases[$code]) ) continue;
1868
1869                                         $aliases[$code] = $this->fixSpecialPageAliases( $aliases[$code] );
1870                                         /* Merge the aliases, THIS will break if there is special page name
1871                                         * which looks like a numerical key, thanks to PHP...
1872                                         * See the array_merge_recursive manual entry */
1873                                         $this->mExtendedSpecialPageAliases = array_merge_recursive(
1874                                                 $this->mExtendedSpecialPageAliases, $aliases[$code] );
1875
1876                                 } while ( $code = self::getFallbackFor( $code ) );
1877                         }
1878
1879                         wfRunHooks( 'LanguageGetSpecialPageAliases',
1880                                 array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
1881                 }
1882
1883                 return $this->mExtendedSpecialPageAliases;
1884         }
1885
1886         /**
1887          * Function to fix special page aliases. Will convert the first letter to
1888          * upper case and spaces to underscores. Can be given a full aliases array,
1889          * in which case it will recursively fix all aliases.
1890          */
1891         public function fixSpecialPageAliases( $mixed ) {
1892                 // Work recursively until in string level
1893                 if ( is_array($mixed) ) {
1894                         $callback = array( $this, 'fixSpecialPageAliases' );
1895                         return array_map( $callback, $mixed );
1896                 }
1897                 return str_replace( ' ', '_', $this->ucfirst( $mixed ) );
1898         }
1899
1900         /**
1901          * Italic is unsuitable for some languages
1902          *
1903          * @param $text String: the text to be emphasized.
1904          * @return string
1905          */
1906         function emphasize( $text ) {
1907                 return "<em>$text</em>";
1908         }
1909
1910          /**
1911           * Normally we output all numbers in plain en_US style, that is
1912           * 293,291.235 for twohundredninetythreethousand-twohundredninetyone
1913           * point twohundredthirtyfive. However this is not sutable for all
1914           * languages, some such as Pakaran want ੨੯੩,੨੯੫.੨੩੫ and others such as
1915           * Icelandic just want to use commas instead of dots, and dots instead
1916           * of commas like "293.291,235".
1917           *
1918           * An example of this function being called:
1919           * <code>
1920           * wfMsg( 'message', $wgLang->formatNum( $num ) )
1921           * </code>
1922           *
1923           * See LanguageGu.php for the Gujarati implementation and
1924           * $separatorTransformTable on MessageIs.php for
1925           * the , => . and . => , implementation.
1926           *
1927           * @todo check if it's viable to use localeconv() for the decimal
1928           *       separator thing.
1929           * @param $number Mixed: the string to be formatted, should be an integer
1930           *        or a floating point number.
1931           * @param $nocommafy Bool: set to true for special numbers like dates
1932           * @return string
1933           */
1934         function formatNum( $number, $nocommafy = false ) {
1935                 global $wgTranslateNumerals;
1936                 if (!$nocommafy) {
1937                         $number = $this->commafy($number);
1938                         $s = $this->separatorTransformTable();
1939                         if ($s) { $number = strtr($number, $s); }
1940                 }
1941
1942                 if ($wgTranslateNumerals) {
1943                         $s = $this->digitTransformTable();
1944                         if ($s) { $number = strtr($number, $s); }
1945                 }
1946
1947                 return $number;
1948         }
1949
1950         function parseFormattedNumber( $number ) {
1951                 $s = $this->digitTransformTable();
1952                 if ($s) { $number = strtr($number, array_flip($s)); }
1953
1954                 $s = $this->separatorTransformTable();
1955                 if ($s) { $number = strtr($number, array_flip($s)); }
1956
1957                 $number = strtr( $number, array (',' => '') );
1958                 return $number;
1959         }
1960
1961         /**
1962          * Adds commas to a given number
1963          *
1964          * @param $_ mixed
1965          * @return string
1966          */
1967         function commafy($_) {
1968                 return strrev((string)preg_replace('/(\d{3})(?=\d)(?!\d*\.)/','$1,',strrev($_)));
1969         }
1970
1971         function digitTransformTable() {
1972                 $this->load();
1973                 return $this->digitTransformTable;
1974         }
1975
1976         function separatorTransformTable() {
1977                 $this->load();
1978                 return $this->separatorTransformTable;
1979         }
1980
1981
1982         /**
1983          * Take a list of strings and build a locale-friendly comma-separated
1984          * list, using the local comma-separator message.
1985          * The last two strings are chained with an "and".
1986          *
1987          * @param $l Array
1988          * @return string
1989          */
1990         function listToText( $l ) {
1991                 $s = '';
1992                 $m = count( $l ) - 1;
1993                 if( $m == 1 ) {
1994                         return $l[0] . $this->getMessageFromDB( 'and' ) . $this->getMessageFromDB( 'word-separator' ) . $l[1];
1995                 }
1996                 else {
1997                         for ( $i = $m; $i >= 0; $i-- ) {
1998                                 if ( $i == $m ) {
1999                                         $s = $l[$i];
2000                                 } else if( $i == $m - 1 ) {
2001                                         $s = $l[$i] . $this->getMessageFromDB( 'and' ) . $this->getMessageFromDB( 'word-separator' ) . $s;
2002                                 } else {
2003                                         $s = $l[$i] . $this->getMessageFromDB( 'comma-separator' ) . $s;
2004                                 }
2005                         }
2006                         return $s;
2007                 }
2008         }
2009
2010         /**
2011          * Take a list of strings and build a locale-friendly comma-separated
2012          * list, using the local comma-separator message.
2013          * @param $list array of strings to put in a comma list
2014          * @return string
2015          */
2016         function commaList( $list ) {
2017                 return implode(
2018                         $list,
2019                         wfMsgExt( 'comma-separator', array( 'escapenoentities', 'language' => $this ) ) );
2020         }
2021
2022         /**
2023          * Same as commaList, but separate it with the pipe instead.
2024          * @param $list array of strings to put in a pipe list
2025          * @return string
2026          */
2027         function pipeList( $list ) {
2028                 return implode(
2029                         $list,
2030                         wfMsgExt( 'pipe-separator', array( 'escapenoentities', 'language' => $this ) ) );
2031         }
2032
2033         /**
2034          * Truncate a string to a specified length in bytes, appending an optional
2035          * string (e.g. for ellipses)
2036          *
2037          * The database offers limited byte lengths for some columns in the database;
2038          * multi-byte character sets mean we need to ensure that only whole characters
2039          * are included, otherwise broken characters can be passed to the user
2040          *
2041          * If $length is negative, the string will be truncated from the beginning
2042          *
2043          * @param $string String to truncate
2044          * @param $length Int: maximum length (excluding ellipses)
2045          * @param $ellipsis String to append to the truncated text
2046          * @return string
2047          */
2048         function truncate( $string, $length, $ellipsis = "" ) {
2049                 if( $length == 0 ) {
2050                         return $ellipsis;
2051                 }
2052                 if ( strlen( $string ) <= abs( $length ) ) {
2053                         return $string;
2054                 }
2055                 if( $length > 0 ) {
2056                         $string = substr( $string, 0, $length );
2057                         $char = ord( $string[strlen( $string ) - 1] );
2058                         $m = array();
2059                         if ($char >= 0xc0) {
2060                                 # We got the first byte only of a multibyte char; remove it.
2061                                 $string = substr( $string, 0, -1 );
2062                         } elseif( $char >= 0x80 &&
2063                                   preg_match( '/^(.*)(?:[\xe0-\xef][\x80-\xbf]|' .
2064                                               '[\xf0-\xf7][\x80-\xbf]{1,2})$/', $string, $m ) ) {
2065                             # We chopped in the middle of a character; remove it
2066                                 $string = $m[1];
2067                         }
2068                         return $string . $ellipsis;
2069                 } else {
2070                         $string = substr( $string, $length );
2071                         $char = ord( $string[0] );
2072                         if( $char >= 0x80 && $char < 0xc0 ) {
2073                                 # We chopped in the middle of a character; remove the whole thing
2074                                 $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
2075                         }
2076                         return $ellipsis . $string;
2077                 }
2078         }
2079
2080         /**
2081          * Grammatical transformations, needed for inflected languages
2082          * Invoked by putting {{grammar:case|word}} in a message
2083          *
2084          * @param $word string
2085          * @param $case string
2086          * @return string
2087          */
2088         function convertGrammar( $word, $case ) {
2089                 global $wgGrammarForms;
2090                 if ( isset($wgGrammarForms[$this->getCode()][$case][$word]) ) {
2091                         return $wgGrammarForms[$this->getCode()][$case][$word];
2092                 }
2093                 return $word;
2094         }
2095
2096         /**
2097          * Plural form transformations, needed for some languages.
2098          * For example, there are 3 form of plural in Russian and Polish,
2099          * depending on "count mod 10". See [[w:Plural]]
2100          * For English it is pretty simple.
2101          *
2102          * Invoked by putting {{plural:count|wordform1|wordform2}}
2103          * or {{plural:count|wordform1|wordform2|wordform3}}
2104          *
2105          * Example: {{plural:{{NUMBEROFARTICLES}}|article|articles}}
2106          *
2107          * @param $count Integer: non-localized number
2108          * @param $forms Array: different plural forms
2109          * @return string Correct form of plural for $count in this language
2110          */
2111         function convertPlural( $count, $forms ) {
2112                 if ( !count($forms) ) { return ''; }
2113                 $forms = $this->preConvertPlural( $forms, 2 );
2114
2115                 return ( $count == 1 ) ? $forms[0] : $forms[1];
2116         }
2117
2118         /**
2119          * Checks that convertPlural was given an array and pads it to requested
2120          * amound of forms by copying the last one.
2121          *
2122          * @param $count Integer: How many forms should there be at least
2123          * @param $forms Array of forms given to convertPlural
2124          * @return array Padded array of forms or an exception if not an array
2125          */
2126         protected function preConvertPlural( /* Array */ $forms, $count ) {
2127                 while ( count($forms) < $count ) {
2128                         $forms[] = $forms[count($forms)-1];
2129                 }
2130                 return $forms;
2131         }
2132
2133         /**
2134          * For translaing of expiry times
2135          * @param $str String: the validated block time in English
2136          * @return Somehow translated block time
2137          * @see LanguageFi.php for example implementation
2138          */
2139         function translateBlockExpiry( $str ) {
2140
2141                 $scBlockExpiryOptions = $this->getMessageFromDB( 'ipboptions' );
2142
2143                 if ( $scBlockExpiryOptions == '-') {
2144                         return $str;
2145                 }
2146
2147                 foreach (explode(',', $scBlockExpiryOptions) as $option) {
2148                         if ( strpos($option, ":") === false )
2149                                 continue;
2150                         list($show, $value) = explode(":", $option);
2151                         if ( strcmp ( $str, $value) == 0 ) {
2152                                 return htmlspecialchars( trim( $show ) );
2153                         }
2154                 }
2155
2156                 return $str;
2157         }
2158
2159         /**
2160          * languages like Chinese need to be segmented in order for the diff
2161          * to be of any use
2162          *
2163          * @param $text String
2164          * @return String
2165          */
2166         function segmentForDiff( $text ) {
2167                 return $text;
2168         }
2169
2170         /**
2171          * and unsegment to show the result
2172          *
2173          * @param $text String
2174          * @return String
2175          */
2176         function unsegmentForDiff( $text ) {
2177                 return $text;
2178         }
2179
2180         # convert text to different variants of a language.
2181         function convert( $text, $isTitle = false) {
2182                 return $this->mConverter->convert($text, $isTitle);
2183         }
2184
2185         # Convert text from within Parser
2186         function parserConvert( $text, &$parser ) {
2187                 return $this->mConverter->parserConvert( $text, $parser );
2188         }
2189
2190         # Check if this is a language with variants
2191         function hasVariants(){
2192                 return sizeof($this->getVariants())>1;
2193         }
2194
2195         # Put custom tags (e.g. -{ }-) around math to prevent conversion
2196         function armourMath($text){
2197                 return $this->mConverter->armourMath($text);
2198         }
2199
2200
2201         /**
2202          * Perform output conversion on a string, and encode for safe HTML output.
2203          * @param $text String
2204          * @param $isTitle Bool -- wtf?
2205          * @return string
2206          * @todo this should get integrated somewhere sane
2207          */
2208         function convertHtml( $text, $isTitle = false ) {
2209                 return htmlspecialchars( $this->convert( $text, $isTitle ) );
2210         }
2211
2212         function convertCategoryKey( $key ) {
2213                 return $this->mConverter->convertCategoryKey( $key );
2214         }
2215
2216         /**
2217          * get the list of variants supported by this langauge
2218          * see sample implementation in LanguageZh.php
2219          *
2220          * @return array an array of language codes
2221          */
2222         function getVariants() {
2223                 return $this->mConverter->getVariants();
2224         }
2225
2226
2227         function getPreferredVariant( $fromUser = true ) {
2228                 return $this->mConverter->getPreferredVariant( $fromUser );
2229         }
2230
2231         /**
2232          * if a language supports multiple variants, it is
2233          * possible that non-existing link in one variant
2234          * actually exists in another variant. this function
2235          * tries to find it. See e.g. LanguageZh.php
2236          *
2237          * @param $link String: the name of the link
2238          * @param $nt Mixed: the title object of the link
2239          * @return null the input parameters may be modified upon return
2240          */
2241         function findVariantLink( &$link, &$nt, $forTemplate = false ) {
2242                 $this->mConverter->findVariantLink($link, $nt, $forTemplate );
2243         }
2244
2245         /**
2246          * If a language supports multiple variants, converts text
2247          * into an array of all possible variants of the text:
2248          *  'variant' => text in that variant
2249          */
2250
2251         function convertLinkToAllVariants($text){
2252                 return $this->mConverter->convertLinkToAllVariants($text);
2253         }
2254
2255
2256         /**
2257          * returns language specific options used by User::getPageRenderHash()
2258          * for example, the preferred language variant
2259          *
2260          * @return string
2261          */
2262         function getExtraHashOptions() {
2263                 return $this->mConverter->getExtraHashOptions();
2264         }
2265
2266         /**
2267          * for languages that support multiple variants, the title of an
2268          * article may be displayed differently in different variants. this
2269          * function returns the apporiate title defined in the body of the article.
2270          *
2271          * @return string
2272          */
2273         function getParsedTitle() {
2274                 return $this->mConverter->getParsedTitle();
2275         }
2276
2277         /**
2278          * Enclose a string with the "no conversion" tag. This is used by
2279          * various functions in the Parser
2280          *
2281          * @param $text String: text to be tagged for no conversion
2282          * @param $noParse
2283          * @return string the tagged text
2284          */
2285         function markNoConversion( $text, $noParse=false ) {
2286                 return $this->mConverter->markNoConversion( $text, $noParse );
2287         }
2288
2289         /**
2290          * A regular expression to match legal word-trailing characters
2291          * which should be merged onto a link of the form [[foo]]bar.
2292          *
2293          * @return string
2294          */
2295         function linkTrail() {
2296                 $this->load();
2297                 return $this->linkTrail;
2298         }
2299
2300         function getLangObj() {
2301                 return $this;
2302         }
2303
2304         /**
2305          * Get the RFC 3066 code for this language object
2306          */
2307         function getCode() {
2308                 return $this->mCode;
2309         }
2310
2311         function setCode( $code ) {
2312                 $this->mCode = $code;
2313         }
2314
2315         static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
2316                 return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
2317         }
2318
2319         static function getMessagesFileName( $code ) {
2320                 global $IP;
2321                 return self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
2322         }
2323
2324         static function getClassFileName( $code ) {
2325                 global $IP;
2326                 return self::getFileName( "$IP/languages/classes/Language", $code, '.php' );
2327         }
2328
2329         static function getLocalisationArray( $code, $disableCache = false ) {
2330                 self::loadLocalisation( $code, $disableCache );
2331                 return self::$mLocalisationCache[$code];
2332         }
2333
2334         /**
2335          * Load localisation data for a given code into the static cache
2336          *
2337          * @return array Dependencies, map of filenames to mtimes
2338          */
2339         static function loadLocalisation( $code, $disableCache = false ) {
2340                 static $recursionGuard = array();
2341                 global $wgMemc, $wgEnableSerializedMessages, $wgCheckSerialized;
2342
2343                 if ( !$code ) {
2344                         throw new MWException( "Invalid language code requested" );
2345                 }
2346
2347                 if ( !$disableCache ) {
2348                         # Try the per-process cache
2349                         if ( isset( self::$mLocalisationCache[$code] ) ) {
2350                                 return self::$mLocalisationCache[$code]['deps'];
2351                         }
2352
2353                         wfProfileIn( __METHOD__ );
2354
2355                         # Try the serialized directory
2356                         if( $wgEnableSerializedMessages ) {
2357                                 $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
2358                                 if ( $cache ) {
2359                                         if ( $wgCheckSerialized && self::isLocalisationOutOfDate( $cache ) ) {
2360                                                 $cache = false;
2361                                                 wfDebug( "Language::loadLocalisation(): precompiled data file for $code is out of date\n" );
2362                                         } else {
2363                                                 self::$mLocalisationCache[$code] = $cache;
2364                                                 wfDebug( "Language::loadLocalisation(): got localisation for $code from precompiled data file\n" );
2365                                                 wfProfileOut( __METHOD__ );
2366                                                 return self::$mLocalisationCache[$code]['deps'];
2367                                         }
2368                                 }
2369                         }
2370
2371                         # Try the global cache
2372                         $memcKey = wfMemcKey('localisation', $code );
2373                         $fbMemcKey = wfMemcKey('fallback', $cache['fallback'] );
2374                         $cache = $wgMemc->get( $memcKey );
2375                         if ( $cache ) {
2376                                 if ( self::isLocalisationOutOfDate( $cache ) ) {
2377                                         $wgMemc->delete( $memcKey );
2378                                         $wgMemc->delete( $fbMemcKey );
2379                                         $cache = false;
2380                                         wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired\n" );
2381                                 } else {
2382                                         self::$mLocalisationCache[$code] = $cache;
2383                                         wfDebug( "Language::loadLocalisation(): got localisation for $code from cache\n" );
2384                                         wfProfileOut( __METHOD__ );
2385                                         return $cache['deps'];
2386                                 }
2387                         }
2388                 } else {
2389                         wfProfileIn( __METHOD__ );
2390                 }
2391
2392                 # Default fallback, may be overridden when the messages file is included
2393                 if ( $code != 'en' ) {
2394                         $fallback = 'en';
2395                 } else {
2396                         $fallback = false;
2397                 }
2398
2399                 # Load the primary localisation from the source file
2400                 $filename = self::getMessagesFileName( $code );
2401                 if ( !file_exists( $filename ) ) {
2402                         wfDebug( "Language::loadLocalisation(): no localisation file for $code, using implicit fallback to en\n" );
2403                         $cache = compact( self::$mLocalisationKeys ); // Set correct fallback
2404                         $deps = array();
2405                 } else {
2406                         $deps = array( $filename => filemtime( $filename ) );
2407                         require( $filename );
2408                         $cache = compact( self::$mLocalisationKeys );
2409                         wfDebug( "Language::loadLocalisation(): got localisation for $code from source\n" );
2410                 }
2411
2412                 if ( !empty( $fallback ) ) {
2413                         # Load the fallback localisation, with a circular reference guard
2414                         if ( isset( $recursionGuard[$code] ) ) {
2415                                 throw new MWException( "Error: Circular fallback reference in language code $code" );
2416                         }
2417                         $recursionGuard[$code] = true;
2418                         $newDeps = self::loadLocalisation( $fallback, $disableCache );
2419                         unset( $recursionGuard[$code] );
2420
2421                         $secondary = self::$mLocalisationCache[$fallback];
2422                         $deps = array_merge( $deps, $newDeps );
2423
2424                         # Merge the fallback localisation with the current localisation
2425                         foreach ( self::$mLocalisationKeys as $key ) {
2426                                 if ( isset( $cache[$key] ) ) {
2427                                         if ( isset( $secondary[$key] ) ) {
2428                                                 if ( in_array( $key, self::$mMergeableMapKeys ) ) {
2429                                                         $cache[$key] = $cache[$key] + $secondary[$key];
2430                                                 } elseif ( in_array( $key, self::$mMergeableListKeys ) ) {
2431                                                         $cache[$key] = array_merge( $secondary[$key], $cache[$key] );
2432                                                 } elseif ( in_array( $key, self::$mMergeableAliasListKeys ) ) {
2433                                                         $cache[$key] = array_merge_recursive( $cache[$key], $secondary[$key] );
2434                                                 }
2435                                         }
2436                                 } else {
2437                                         $cache[$key] = $secondary[$key];
2438                                 }
2439                         }
2440
2441                         # Merge bookstore lists if requested
2442                         if ( !empty( $cache['bookstoreList']['inherit'] ) ) {
2443                                 $cache['bookstoreList'] = array_merge( $cache['bookstoreList'], $secondary['bookstoreList'] );
2444                         }
2445                         if ( isset( $cache['bookstoreList']['inherit'] ) ) {
2446                                 unset( $cache['bookstoreList']['inherit'] );
2447                         }
2448                 }
2449
2450                 # Add dependencies to the cache entry
2451                 $cache['deps'] = $deps;
2452
2453                 # Replace spaces with underscores in namespace names
2454                 $cache['namespaceNames'] = str_replace( ' ', '_', $cache['namespaceNames'] );
2455
2456                 # And do the same for specialpage aliases. $page is an array.
2457                 foreach ( $cache['specialPageAliases'] as &$page ) {
2458                         $page = str_replace( ' ', '_', $page );
2459                 }
2460                 # Decouple the reference to prevent accidental damage
2461                 unset($page);
2462
2463                 # Save to both caches
2464                 self::$mLocalisationCache[$code] = $cache;
2465                 if ( !$disableCache ) {
2466                         $wgMemc->set( $memcKey, $cache );
2467                         $wgMemc->set( $fbMemcKey, (string) $cache['fallback'] );
2468                 }
2469
2470                 wfProfileOut( __METHOD__ );
2471                 return $deps;
2472         }
2473
2474         /**
2475          * Test if a given localisation cache is out of date with respect to the
2476          * source Messages files. This is done automatically for the global cache
2477          * in $wgMemc, but is only done on certain occasions for the serialized
2478          * data file.
2479          *
2480          * @param $cache mixed Either a language code or a cache array
2481          */
2482         static function isLocalisationOutOfDate( $cache ) {
2483                 if ( !is_array( $cache ) ) {
2484                         self::loadLocalisation( $cache );
2485                         $cache = self::$mLocalisationCache[$cache];
2486                 }
2487                 $expired = false;
2488                 foreach ( $cache['deps'] as $file => $mtime ) {
2489                         if ( !file_exists( $file ) || filemtime( $file ) > $mtime ) {
2490                                 $expired = true;
2491                                 break;
2492                         }
2493                 }
2494                 return $expired;
2495         }
2496
2497         /**
2498          * Get the fallback for a given language
2499          */
2500         static function getFallbackFor( $code ) {
2501                 // Shortcut
2502                 if ( $code === 'en' ) return false;
2503
2504                 // Local cache
2505                 static $cache = array();
2506                 // Quick return
2507                 if ( isset($cache[$code]) ) return $cache[$code];
2508
2509                 // Try memcache
2510                 global $wgMemc;
2511                 $memcKey = wfMemcKey( 'fallback', $code );
2512                 $fbcode = $wgMemc->get( $memcKey );
2513
2514                 if ( is_string($fbcode) ) {
2515                         // False is stored as a string to detect failures in memcache properly
2516                         if ( $fbcode === '' ) $fbcode = false;
2517
2518                         // Update local cache and return
2519                         $cache[$code] = $fbcode;
2520                         return $fbcode;
2521                 }
2522
2523                 // Nothing in caches, load and and update both caches
2524                 self::loadLocalisation( $code );
2525                 $fbcode = self::$mLocalisationCache[$code]['fallback'];
2526
2527                 $cache[$code] = $fbcode;
2528                 $wgMemc->set( $memcKey, (string) $fbcode );
2529
2530                 return $fbcode;
2531         }
2532
2533         /**
2534          * Get all messages for a given language
2535          */
2536         static function getMessagesFor( $code ) {
2537                 self::loadLocalisation( $code );
2538                 return self::$mLocalisationCache[$code]['messages'];
2539         }
2540
2541         /**
2542          * Get a message for a given language
2543          */
2544         static function getMessageFor( $key, $code ) {
2545                 self::loadLocalisation( $code );
2546                 return isset( self::$mLocalisationCache[$code]['messages'][$key] ) ? self::$mLocalisationCache[$code]['messages'][$key] : null;
2547         }
2548
2549         /**
2550          * Load localisation data for this object
2551          */
2552         function load() {
2553                 if ( !$this->mLoaded ) {
2554                         self::loadLocalisation( $this->getCode() );
2555                         $cache =& self::$mLocalisationCache[$this->getCode()];
2556                         foreach ( self::$mLocalisationKeys as $key ) {
2557                                 $this->$key = $cache[$key];
2558                         }
2559                         $this->mLoaded = true;
2560
2561                         $this->fixUpSettings();
2562                 }
2563         }
2564
2565         /**
2566          * Do any necessary post-cache-load settings adjustment
2567          */
2568         function fixUpSettings() {
2569                 global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk,
2570                         $wgNamespaceAliases, $wgAmericanDates;
2571                 wfProfileIn( __METHOD__ );
2572                 if ( $wgExtraNamespaces ) {
2573                         $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames;
2574                 }
2575
2576                 $this->namespaceNames[NS_PROJECT] = $wgMetaNamespace;
2577                 if ( $wgMetaNamespaceTalk ) {
2578                         $this->namespaceNames[NS_PROJECT_TALK] = $wgMetaNamespaceTalk;
2579                 } else {
2580                         $talk = $this->namespaceNames[NS_PROJECT_TALK];
2581                         $talk = str_replace( '$1', $wgMetaNamespace, $talk );
2582
2583                         # Allow grammar transformations
2584                         # Allowing full message-style parsing would make simple requests
2585                         # such as action=raw much more expensive than they need to be.
2586                         # This will hopefully cover most cases.
2587                         $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
2588                                 array( &$this, 'replaceGrammarInNamespace' ), $talk );
2589                         $talk = str_replace( ' ', '_', $talk );
2590                         $this->namespaceNames[NS_PROJECT_TALK] = $talk;
2591                 }
2592
2593                 # The above mixing may leave namespaces out of canonical order.
2594                 # Re-order by namespace ID number...
2595                 ksort( $this->namespaceNames );
2596
2597                 # Put namespace names and aliases into a hashtable.
2598                 # If this is too slow, then we should arrange it so that it is done
2599                 # before caching. The catch is that at pre-cache time, the above
2600                 # class-specific fixup hasn't been done.
2601                 $this->mNamespaceIds = array();
2602                 foreach ( $this->namespaceNames as $index => $name ) {
2603                         $this->mNamespaceIds[$this->lc($name)] = $index;
2604                 }
2605                 if ( $this->namespaceAliases ) {
2606                         foreach ( $this->namespaceAliases as $name => $index ) {
2607                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2608                         }
2609                 }
2610                 if ( $wgNamespaceAliases ) {
2611                         foreach ( $wgNamespaceAliases as $name => $index ) {
2612                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2613                         }
2614                 }
2615
2616                 if ( $this->defaultDateFormat == 'dmy or mdy' ) {
2617                         $this->defaultDateFormat = $wgAmericanDates ? 'mdy' : 'dmy';
2618                 }
2619                 wfProfileOut( __METHOD__ );
2620         }
2621
2622         function replaceGrammarInNamespace( $m ) {
2623                 return $this->convertGrammar( trim( $m[2] ), trim( $m[1] ) );
2624         }
2625
2626         static function getCaseMaps() {
2627                 static $wikiUpperChars, $wikiLowerChars;
2628                 if ( isset( $wikiUpperChars ) ) {
2629                         return array( $wikiUpperChars, $wikiLowerChars );
2630                 }
2631
2632                 wfProfileIn( __METHOD__ );
2633                 $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
2634                 if ( $arr === false ) {
2635                         throw new MWException(
2636                                 "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
2637                 }
2638                 extract( $arr );
2639                 wfProfileOut( __METHOD__ );
2640                 return array( $wikiUpperChars, $wikiLowerChars );
2641         }
2642
2643         function formatTimePeriod( $seconds ) {
2644                 if ( $seconds < 10 ) {
2645                         return $this->formatNum( sprintf( "%.1f", $seconds ) ) . wfMsg( 'seconds-abbrev' );
2646                 } elseif ( $seconds < 60 ) {
2647                         return $this->formatNum( round( $seconds ) ) . wfMsg( 'seconds-abbrev' );
2648                 } elseif ( $seconds < 3600 ) {
2649                         return $this->formatNum( floor( $seconds / 60 ) ) . wfMsg( 'minutes-abbrev' ) .
2650                                 $this->formatNum( round( fmod( $seconds, 60 ) ) ) . wfMsg( 'seconds-abbrev' );
2651                 } else {
2652                         $hours = floor( $seconds / 3600 );
2653                         $minutes = floor( ( $seconds - $hours * 3600 ) / 60 );
2654                         $secondsPart = round( $seconds - $hours * 3600 - $minutes * 60 );
2655                         return $this->formatNum( $hours ) . wfMsg( 'hours-abbrev' ) .
2656                                 $this->formatNum( $minutes ) . wfMsg( 'minutes-abbrev' ) .
2657                                 $this->formatNum( $secondsPart ) . wfMsg( 'seconds-abbrev' );
2658                 }
2659         }
2660
2661         function formatBitrate( $bps ) {
2662                 $units = array( 'bps', 'kbps', 'Mbps', 'Gbps' );
2663                 if ( $bps <= 0 ) {
2664                         return $this->formatNum( $bps ) . $units[0];
2665                 }
2666                 $unitIndex = floor( log10( $bps ) / 3 );
2667                 $mantissa = $bps / pow( 1000, $unitIndex );
2668                 if ( $mantissa < 10 ) {
2669                         $mantissa = round( $mantissa, 1 );
2670                 } else {
2671                         $mantissa = round( $mantissa );
2672                 }
2673                 return $this->formatNum( $mantissa ) . $units[$unitIndex];
2674         }
2675
2676         /**
2677          * Format a size in bytes for output, using an appropriate
2678          * unit (B, KB, MB or GB) according to the magnitude in question
2679          *
2680          * @param $size Size to format
2681          * @return string Plain text (not HTML)
2682          */
2683         function formatSize( $size ) {
2684                 // For small sizes no decimal places necessary
2685                 $round = 0;
2686                 if( $size > 1024 ) {
2687                         $size = $size / 1024;
2688                         if( $size > 1024 ) {
2689                                 $size = $size / 1024;
2690                                 // For MB and bigger two decimal places are smarter
2691                                 $round = 2;
2692                                 if( $size > 1024 ) {
2693                                         $size = $size / 1024;
2694                                         $msg = 'size-gigabytes';
2695                                 } else {
2696                                         $msg = 'size-megabytes';
2697                                 }
2698                         } else {
2699                                 $msg = 'size-kilobytes';
2700                         }
2701                 } else {
2702                         $msg = 'size-bytes';
2703                 }
2704                 $size = round( $size, $round );
2705                 $text = $this->getMessageFromDB( $msg );
2706                 return str_replace( '$1', $this->formatNum( $size ), $text );
2707         }
2708 }