languages/Language.php

   1 <?php
   2 /**
   3  * @defgroup Language Language
   4  *
   5  * @file
   6  * @ingroup Language
   7  */
   8
   9 if( !defined( 'MEDIAWIKI' ) ) {
  10         echo "This file is part of MediaWiki, it is not a valid entry point.\n";
  11         exit( 1 );
  12 }
  13
  14 # Read language names
  15 global $wgLanguageNames;
  16 require_once( dirname(__FILE__) . '/Names.php' ) ;
  17
  18 global $wgInputEncoding, $wgOutputEncoding;
  19
  20 /**
  21  * These are always UTF-8, they exist only for backwards compatibility
  22  */
  23 $wgInputEncoding    = "UTF-8";
  24 $wgOutputEncoding       = "UTF-8";
  25
  26 if( function_exists( 'mb_strtoupper' ) ) {
  27         mb_internal_encoding('UTF-8');
  28 }
  29
  30 /**
  31  * a fake language converter
  32  *
  33  * @ingroup Language
  34  */
  35 class FakeConverter {
  36         var $mLang;
  37         function FakeConverter($langobj) {$this->mLang = $langobj;}
  38         function convert($t, $i) {return $t;}
  39         function parserConvert($t, $p) {return $t;}
  40         function getVariants() { return array( $this->mLang->getCode() ); }
  41         function getPreferredVariant() {return $this->mLang->getCode(); }
  42         function findVariantLink(&$l, &$n, $forTemplate = false) {}
  43         function getExtraHashOptions() {return '';}
  44         function getParsedTitle() {return '';}
  45         function markNoConversion($text, $noParse=false) {return $text;}
  46         function convertCategoryKey( $key ) {return $key; }
  47         function convertLinkToAllVariants($text){ return array( $this->mLang->getCode() => $text); }
  48         function armourMath($text){ return $text; }
  49 }
  50
  51 /**
  52  * Internationalisation code
  53  * @ingroup Language
  54  */
  55 class Language {
  56         var $mConverter, $mVariants, $mCode, $mLoaded = false;
  57         var $mMagicExtensions = array(), $mMagicHookDone = false;
  58
  59         static public $mLocalisationKeys = array( 'fallback', 'namespaceNames',
  60                 'skinNames', 'mathNames',
  61                 'bookstoreList', 'magicWords', 'messages', 'rtl', 'digitTransformTable',
  62                 'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
  63                 'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
  64                 'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
  65                 'defaultDateFormat', 'extraUserToggles', 'specialPageAliases',
  66                 'imageFiles'
  67         );
  68
  69         static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
  70                 'dateFormats', 'defaultUserOptionOverrides', 'magicWords', 'imageFiles' );
  71
  72         static public $mMergeableListKeys = array( 'extraUserToggles' );
  73
  74         static public $mMergeableAliasListKeys = array( 'specialPageAliases' );
  75
  76         static public $mLocalisationCache = array();
  77         static public $mLangObjCache = array();
  78
  79         static public $mWeekdayMsgs = array(
  80                 'sunday', 'monday', 'tuesday', 'wednesday', 'thursday',
  81                 'friday', 'saturday'
  82         );
  83
  84         static public $mWeekdayAbbrevMsgs = array(
  85                 'sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'
  86         );
  87
  88         static public $mMonthMsgs = array(
  89                 'january', 'february', 'march', 'april', 'may_long', 'june',
  90                 'july', 'august', 'september', 'october', 'november',
  91                 'december'
  92         );
  93         static public $mMonthGenMsgs = array(
  94                 'january-gen', 'february-gen', 'march-gen', 'april-gen', 'may-gen', 'june-gen',
  95                 'july-gen', 'august-gen', 'september-gen', 'october-gen', 'november-gen',
  96                 'december-gen'
  97         );
  98         static public $mMonthAbbrevMsgs = array(
  99                 'jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug',
 100                 'sep', 'oct', 'nov', 'dec'
 101         );
 102
 103         static public $mIranianCalendarMonthMsgs = array(
 104                 'iranian-calendar-m1', 'iranian-calendar-m2', 'iranian-calendar-m3',
 105                 'iranian-calendar-m4', 'iranian-calendar-m5', 'iranian-calendar-m6',
 106                 'iranian-calendar-m7', 'iranian-calendar-m8', 'iranian-calendar-m9',
 107                 'iranian-calendar-m10', 'iranian-calendar-m11', 'iranian-calendar-m12'
 108         );
 109
 110         static public $mHebrewCalendarMonthMsgs = array(
 111                 'hebrew-calendar-m1', 'hebrew-calendar-m2', 'hebrew-calendar-m3',
 112                 'hebrew-calendar-m4', 'hebrew-calendar-m5', 'hebrew-calendar-m6',
 113                 'hebrew-calendar-m7', 'hebrew-calendar-m8', 'hebrew-calendar-m9',
 114                 'hebrew-calendar-m10', 'hebrew-calendar-m11', 'hebrew-calendar-m12',
 115                 'hebrew-calendar-m6a', 'hebrew-calendar-m6b'
 116         );
 117
 118         static public $mHebrewCalendarMonthGenMsgs = array(
 119                 'hebrew-calendar-m1-gen', 'hebrew-calendar-m2-gen', 'hebrew-calendar-m3-gen',
 120                 'hebrew-calendar-m4-gen', 'hebrew-calendar-m5-gen', 'hebrew-calendar-m6-gen',
 121                 'hebrew-calendar-m7-gen', 'hebrew-calendar-m8-gen', 'hebrew-calendar-m9-gen',
 122                 'hebrew-calendar-m10-gen', 'hebrew-calendar-m11-gen', 'hebrew-calendar-m12-gen',
 123                 'hebrew-calendar-m6a-gen', 'hebrew-calendar-m6b-gen'
 124         );
 125
 126         static public $mHijriCalendarMonthMsgs = array(
 127                 'hijri-calendar-m1', 'hijri-calendar-m2', 'hijri-calendar-m3',
 128                 'hijri-calendar-m4', 'hijri-calendar-m5', 'hijri-calendar-m6',
 129                 'hijri-calendar-m7', 'hijri-calendar-m8', 'hijri-calendar-m9',
 130                 'hijri-calendar-m10', 'hijri-calendar-m11', 'hijri-calendar-m12'
 131         );
 132
 133         /**
 134          * Get a cached language object for a given language code
 135          */
 136         static function factory( $code ) {
 137                 if ( !isset( self::$mLangObjCache[$code] ) ) {
 138                         if( count( self::$mLangObjCache ) > 10 ) {
 139                                 // Don't keep a billion objects around, that's stupid.
 140                                 self::$mLangObjCache = array();
 141                         }
 142                         self::$mLangObjCache[$code] = self::newFromCode( $code );
 143                 }
 144                 return self::$mLangObjCache[$code];
 145         }
 146
 147         /**
 148          * Create a language object for a given language code
 149          */
 150         protected static function newFromCode( $code ) {
 151                 global $IP;
 152                 static $recursionLevel = 0;
 153                 if ( $code == 'en' ) {
 154                         $class = 'Language';
 155                 } else {
 156                         $class = 'Language' . str_replace( '-', '_', ucfirst( $code ) );
 157                         // Preload base classes to work around APC/PHP5 bug
 158                         if ( file_exists( "$IP/languages/classes/$class.deps.php" ) ) {
 159                                 include_once("$IP/languages/classes/$class.deps.php");
 160                         }
 161                         if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
 162                                 include_once("$IP/languages/classes/$class.php");
 163                         }
 164                 }
 165
 166                 if ( $recursionLevel > 5 ) {
 167                         throw new MWException( "Language fallback loop detected when creating class $class\n" );
 168                 }
 169
 170                 if( ! class_exists( $class ) ) {
 171                         $fallback = Language::getFallbackFor( $code );
 172                         ++$recursionLevel;
 173                         $lang = Language::newFromCode( $fallback );
 174                         --$recursionLevel;
 175                         $lang->setCode( $code );
 176                 } else {
 177                         $lang = new $class;
 178                 }
 179                 return $lang;
 180         }
 181
 182         function __construct() {
 183                 $this->mConverter = new FakeConverter($this);
 184                 // Set the code to the name of the descendant
 185                 if ( get_class( $this ) == 'Language' ) {
 186                         $this->mCode = 'en';
 187                 } else {
 188                         $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
 189                 }
 190         }
 191
 192         /**
 193          * Reduce memory usage
 194          */
 195         function __destruct() {
 196                 foreach ( $this as $name => $value ) {
 197                         unset( $this->$name );
 198                 }
 199         }
 200
 201         /**
 202          * Hook which will be called if this is the content language.
 203          * Descendants can use this to register hook functions or modify globals
 204          */
 205         function initContLang() {}
 206
 207         /**
 208          * @deprecated Use User::getDefaultOptions()
 209          * @return array
 210          */
 211         function getDefaultUserOptions() {
 212                 wfDeprecated( __METHOD__ );
 213                 return User::getDefaultOptions();
 214         }
 215
 216         function getFallbackLanguageCode() {
 217                 return self::getFallbackFor( $this->mCode );
 218         }
 219
 220         /**
 221          * Exports $wgBookstoreListEn
 222          * @return array
 223          */
 224         function getBookstoreList() {
 225                 $this->load();
 226                 return $this->bookstoreList;
 227         }
 228
 229         /**
 230          * @return array
 231          */
 232         function getNamespaces() {
 233                 $this->load();
 234                 return $this->namespaceNames;
 235         }
 236
 237         /**
 238          * A convenience function that returns the same thing as
 239          * getNamespaces() except with the array values changed to ' '
 240          * where it found '_', useful for producing output to be displayed
 241          * e.g. in <select> forms.
 242          *
 243          * @return array
 244          */
 245         function getFormattedNamespaces() {
 246                 $ns = $this->getNamespaces();
 247                 foreach($ns as $k => $v) {
 248                         $ns[$k] = strtr($v, '_', ' ');
 249                 }
 250                 return $ns;
 251         }
 252
 253         /**
 254          * Get a namespace value by key
 255          * <code>
 256          * $mw_ns = $wgContLang->getNsText( NS_MEDIAWIKI );
 257          * echo $mw_ns; // prints 'MediaWiki'
 258          * </code>
 259          *
 260          * @param $index Int: the array key of the namespace to return
 261          * @return mixed, string if the namespace value exists, otherwise false
 262          */
 263         function getNsText( $index ) {
 264                 $ns = $this->getNamespaces();
 265                 return isset( $ns[$index] ) ? $ns[$index] : false;
 266         }
 267
 268         /**
 269          * A convenience function that returns the same thing as
 270          * getNsText() except with '_' changed to ' ', useful for
 271          * producing output.
 272          *
 273          * @return array
 274          */
 275         function getFormattedNsText( $index ) {
 276                 $ns = $this->getNsText( $index );
 277                 return strtr($ns, '_', ' ');
 278         }
 279
 280         /**
 281          * Get a namespace key by value, case insensitive.
 282          * Only matches namespace names for the current language, not the
 283          * canonical ones defined in Namespace.php.
 284          *
 285          * @param $text String
 286          * @return mixed An integer if $text is a valid value otherwise false
 287          */
 288         function getLocalNsIndex( $text ) {
 289                 $this->load();
 290                 $lctext = $this->lc($text);
 291                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 292         }
 293
 294         /**
 295          * Get a namespace key by value, case insensitive.  Canonical namespace
 296          * names override custom ones defined for the current language.
 297          *
 298          * @param $text String
 299          * @return mixed An integer if $text is a valid value otherwise false
 300          */
 301         function getNsIndex( $text ) {
 302                 $this->load();
 303                 $lctext = $this->lc($text);
 304                 if( ( $ns = MWNamespace::getCanonicalIndex( $lctext ) ) !== null ) return $ns;
 305                 return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
 306         }
 307
 308         /**
 309          * short names for language variants used for language conversion links.
 310          *
 311          * @param $code String
 312          * @return string
 313          */
 314         function getVariantname( $code ) {
 315                 return $this->getMessageFromDB( "variantname-$code" );
 316         }
 317
 318         function specialPage( $name ) {
 319                 $aliases = $this->getSpecialPageAliases();
 320                 if ( isset( $aliases[$name][0] ) ) {
 321                         $name = $aliases[$name][0];
 322                 }
 323                 return $this->getNsText(NS_SPECIAL) . ':' . $name;
 324         }
 325
 326         function getQuickbarSettings() {
 327                 return array(
 328                         $this->getMessage( 'qbsettings-none' ),
 329                         $this->getMessage( 'qbsettings-fixedleft' ),
 330                         $this->getMessage( 'qbsettings-fixedright' ),
 331                         $this->getMessage( 'qbsettings-floatingleft' ),
 332                         $this->getMessage( 'qbsettings-floatingright' )
 333                 );
 334         }
 335
 336         function getSkinNames() {
 337                 $this->load();
 338                 return $this->skinNames;
 339         }
 340
 341         function getMathNames() {
 342                 $this->load();
 343                 return $this->mathNames;
 344         }
 345
 346         function getDatePreferences() {
 347                 $this->load();
 348                 return $this->datePreferences;
 349         }
 350
 351         function getDateFormats() {
 352                 $this->load();
 353                 return $this->dateFormats;
 354         }
 355
 356         function getDefaultDateFormat() {
 357                 $this->load();
 358                 return $this->defaultDateFormat;
 359         }
 360
 361         function getDatePreferenceMigrationMap() {
 362                 $this->load();
 363                 return $this->datePreferenceMigrationMap;
 364         }
 365
 366         function getImageFile( $image ) {
 367                 $this->load();
 368                 return $this->imageFiles[$image];
 369         }
 370
 371         function getDefaultUserOptionOverrides() {
 372                 $this->load();
 373                 # XXX - apparently some languageas get empty arrays, didn't get to it yet -- midom
 374                 if (is_array($this->defaultUserOptionOverrides)) {
 375                         return $this->defaultUserOptionOverrides;
 376                 } else {
 377                         return array();
 378                 }
 379         }
 380
 381         function getExtraUserToggles() {
 382                 $this->load();
 383                 return $this->extraUserToggles;
 384         }
 385
 386         function getUserToggle( $tog ) {
 387                 return $this->getMessageFromDB( "tog-$tog" );
 388         }
 389
 390         /**
 391          * Get language names, indexed by code.
 392          * If $customisedOnly is true, only returns codes with a messages file
 393          */
 394         public static function getLanguageNames( $customisedOnly = false ) {
 395                 global $wgLanguageNames, $wgExtraLanguageNames;
 396                 $allNames = $wgExtraLanguageNames + $wgLanguageNames;
 397                 if ( !$customisedOnly ) {
 398                         return $allNames;
 399                 }
 400
 401                 global $IP;
 402                 $names = array();
 403                 $dir = opendir( "$IP/languages/messages" );
 404                 while( false !== ( $file = readdir( $dir ) ) ) {
 405                         $m = array();
 406                         if( preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $file, $m ) ) {
 407                                 $code = str_replace( '_', '-', strtolower( $m[1] ) );
 408                                 if ( isset( $allNames[$code] ) ) {
 409                                         $names[$code] = $allNames[$code];
 410                                 }
 411                         }
 412                 }
 413                 closedir( $dir );
 414                 return $names;
 415         }
 416
 417         /**
 418          * Get a message from the MediaWiki namespace.
 419          *
 420          * @param $msg String: message name
 421          * @return string
 422          */
 423         function getMessageFromDB( $msg ) {
 424                 return wfMsgExt( $msg, array( 'parsemag', 'language' => $this ) );
 425         }
 426
 427         function getLanguageName( $code ) {
 428                 $names = self::getLanguageNames();
 429                 if ( !array_key_exists( $code, $names ) ) {
 430                         return '';
 431                 }
 432                 return $names[$code];
 433         }
 434
 435         function getMonthName( $key ) {
 436                 return $this->getMessageFromDB( self::$mMonthMsgs[$key-1] );
 437         }
 438
 439         function getMonthNameGen( $key ) {
 440                 return $this->getMessageFromDB( self::$mMonthGenMsgs[$key-1] );
 441         }
 442
 443         function getMonthAbbreviation( $key ) {
 444                 return $this->getMessageFromDB( self::$mMonthAbbrevMsgs[$key-1] );
 445         }
 446
 447         function getWeekdayName( $key ) {
 448                 return $this->getMessageFromDB( self::$mWeekdayMsgs[$key-1] );
 449         }
 450
 451         function getWeekdayAbbreviation( $key ) {
 452                 return $this->getMessageFromDB( self::$mWeekdayAbbrevMsgs[$key-1] );
 453         }
 454
 455         function getIranianCalendarMonthName( $key ) {
 456                 return $this->getMessageFromDB( self::$mIranianCalendarMonthMsgs[$key-1] );
 457         }
 458
 459         function getHebrewCalendarMonthName( $key ) {
 460                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthMsgs[$key-1] );
 461         }
 462
 463         function getHebrewCalendarMonthNameGen( $key ) {
 464                 return $this->getMessageFromDB( self::$mHebrewCalendarMonthGenMsgs[$key-1] );
 465         }
 466
 467         function getHijriCalendarMonthName( $key ) {
 468                 return $this->getMessageFromDB( self::$mHijriCalendarMonthMsgs[$key-1] );
 469         }
 470
 471         /**
 472          * Used by date() and time() to adjust the time output.
 473          *
 474          * @param $ts Int the time in date('YmdHis') format
 475          * @param $tz Mixed: adjust the time by this amount (default false, mean we
 476          *            get user timecorrection setting)
 477          * @return int
 478          */
 479         function userAdjust( $ts, $tz = false ) {
 480                 global $wgUser, $wgLocalTZoffset;
 481
 482                 if (!$tz) {
 483                         $tz = $wgUser->getOption( 'timecorrection' );
 484                 }
 485
 486                 # minutes and hours differences:
 487                 $minDiff = 0;
 488                 $hrDiff  = 0;
 489
 490                 if ( $tz === '' ) {
 491                         # Global offset in minutes.
 492                         if( isset($wgLocalTZoffset) ) {
 493                                 if( $wgLocalTZoffset >= 0 ) {
 494                                         $hrDiff = floor($wgLocalTZoffset / 60);
 495                                 } else {
 496                                         $hrDiff = ceil($wgLocalTZoffset / 60);
 497                                 }
 498                                 $minDiff = $wgLocalTZoffset % 60;
 499                         }
 500                 } elseif ( strpos( $tz, ':' ) !== false ) {
 501                         $tzArray = explode( ':', $tz );
 502                         $hrDiff = intval($tzArray[0]);
 503                         $minDiff = intval($hrDiff < 0 ? -$tzArray[1] : $tzArray[1]);
 504                 } else {
 505                         $hrDiff = intval( $tz );
 506                 }
 507
 508                 # No difference ? Return time unchanged
 509                 if ( 0 == $hrDiff && 0 == $minDiff ) { return $ts; }
 510
 511                 wfSuppressWarnings(); // E_STRICT system time bitching
 512                 # Generate an adjusted date
 513                 $t = mktime( (
 514                   (int)substr( $ts, 8, 2) ) + $hrDiff, # Hours
 515                   (int)substr( $ts, 10, 2 ) + $minDiff, # Minutes
 516                   (int)substr( $ts, 12, 2 ), # Seconds
 517                   (int)substr( $ts, 4, 2 ), # Month
 518                   (int)substr( $ts, 6, 2 ), # Day
 519                   (int)substr( $ts, 0, 4 ) ); #Year
 520
 521                 $date = date( 'YmdHis', $t );
 522                 wfRestoreWarnings();
 523
 524                 return $date;
 525         }
 526
 527         /**
 528          * This is a workalike of PHP's date() function, but with better
 529          * internationalisation, a reduced set of format characters, and a better
 530          * escaping format.
 531          *
 532          * Supported format characters are dDjlNwzWFmMntLYyaAgGhHiscrU. See the
 533          * PHP manual for definitions. There are a number of extensions, which
 534          * start with "x":
 535          *
 536          *    xn   Do not translate digits of the next numeric format character
 537          *    xN   Toggle raw digit (xn) flag, stays set until explicitly unset
 538          *    xr   Use roman numerals for the next numeric format character
 539          *    xh   Use hebrew numerals for the next numeric format character
 540          *    xx   Literal x
 541          *    xg   Genitive month name
 542          *
 543          *    xij  j (day number) in Iranian calendar
 544          *    xiF  F (month name) in Iranian calendar
 545          *    xin  n (month number) in Iranian calendar
 546          *    xiY  Y (full year) in Iranian calendar
 547          *
 548          *    xjj  j (day number) in Hebrew calendar
 549          *    xjF  F (month name) in Hebrew calendar
 550          *    xjt  t (days in month) in Hebrew calendar
 551          *    xjx  xg (genitive month name) in Hebrew calendar
 552          *    xjn  n (month number) in Hebrew calendar
 553          *    xjY  Y (full year) in Hebrew calendar
 554          *
 555          *   xmj  j (day number) in Hijri calendar
 556          *   xmF  F (month name) in Hijri calendar
 557          *   xmn  n (month number) in Hijri calendar
 558          *   xmY  Y (full year) in Hijri calendar
 559          *
 560          *    xkY  Y (full year) in Thai solar calendar. Months and days are
 561          *                       identical to the Gregorian calendar
 562          *
 563          * Characters enclosed in double quotes will be considered literal (with
 564          * the quotes themselves removed). Unmatched quotes will be considered
 565          * literal quotes. Example:
 566          *
 567          * "The month is" F       => The month is January
 568          * i's"                   => 20'11"
 569          *
 570          * Backslash escaping is also supported.
 571          *
 572          * Input timestamp is assumed to be pre-normalized to the desired local
 573          * time zone, if any.
 574          *
 575          * @param $format String
 576          * @param $ts String: 14-character timestamp
 577          *      YYYYMMDDHHMMSS
 578          *      01234567890123
 579          */
 580         function sprintfDate( $format, $ts ) {
 581                 $s = '';
 582                 $raw = false;
 583                 $roman = false;
 584                 $hebrewNum = false;
 585                 $unix = false;
 586                 $rawToggle = false;
 587                 $iranian = false;
 588                 $hebrew = false;
 589                 $hijri = false;
 590                 $thai = false;
 591                 for ( $p = 0; $p < strlen( $format ); $p++ ) {
 592                         $num = false;
 593                         $code = $format[$p];
 594                         if ( $code == 'x' && $p < strlen( $format ) - 1 ) {
 595                                 $code .= $format[++$p];
 596                         }
 597
 598                         if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' ) && $p < strlen( $format ) - 1 ) {
 599                                 $code .= $format[++$p];
 600                         }
 601
 602                         switch ( $code ) {
 603                                 case 'xx':
 604                                         $s .= 'x';
 605                                         break;
 606                                 case 'xn':
 607                                         $raw = true;
 608                                         break;
 609                                 case 'xN':
 610                                         $rawToggle = !$rawToggle;
 611                                         break;
 612                                 case 'xr':
 613                                         $roman = true;
 614                                         break;
 615                                 case 'xh':
 616                                         $hebrewNum = true;
 617                                         break;
 618                                 case 'xg':
 619                                         $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
 620                                         break;
 621                                 case 'xjx':
 622                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 623                                         $s .= $this->getHebrewCalendarMonthNameGen( $hebrew[1] );
 624                                         break;
 625                                 case 'd':
 626                                         $num = substr( $ts, 6, 2 );
 627                                         break;
 628                                 case 'D':
 629                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 630                                         $s .= $this->getWeekdayAbbreviation( gmdate( 'w', $unix ) + 1 );
 631                                         break;
 632                                 case 'j':
 633                                         $num = intval( substr( $ts, 6, 2 ) );
 634                                         break;
 635                                 case 'xij':
 636                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 637                                         $num = $iranian[2];
 638                                         break;
 639                                 case 'xmj':
 640                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 641                                         $num = $hijri[2];
 642                                         break;
 643                                 case 'xjj':
 644                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 645                                         $num = $hebrew[2];
 646                                         break;
 647                                 case 'l':
 648                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 649                                         $s .= $this->getWeekdayName( gmdate( 'w', $unix ) + 1 );
 650                                         break;
 651                                 case 'N':
 652                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 653                                         $w = gmdate( 'w', $unix );
 654                                         $num = $w ? $w : 7;
 655                                         break;
 656                                 case 'w':
 657                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 658                                         $num = gmdate( 'w', $unix );
 659                                         break;
 660                                 case 'z':
 661                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 662                                         $num = gmdate( 'z', $unix );
 663                                         break;
 664                                 case 'W':
 665                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 666                                         $num = gmdate( 'W', $unix );
 667                                         break;
 668                                 case 'F':
 669                                         $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
 670                                         break;
 671                                 case 'xiF':
 672                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 673                                         $s .= $this->getIranianCalendarMonthName( $iranian[1] );
 674                                         break;
 675                                 case 'xmF':
 676                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 677                                         $s .= $this->getHijriCalendarMonthName( $hijri[1] );
 678                                         break;
 679                                 case 'xjF':
 680                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 681                                         $s .= $this->getHebrewCalendarMonthName( $hebrew[1] );
 682                                         break;
 683                                 case 'm':
 684                                         $num = substr( $ts, 4, 2 );
 685                                         break;
 686                                 case 'M':
 687                                         $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
 688                                         break;
 689                                 case 'n':
 690                                         $num = intval( substr( $ts, 4, 2 ) );
 691                                         break;
 692                                 case 'xin':
 693                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 694                                         $num = $iranian[1];
 695                                         break;
 696                                 case 'xmn':
 697                                         if ( !$hijri ) $hijri = self::tsToHijri ( $ts );
 698                                         $num = $hijri[1];
 699                                         break;
 700                                 case 'xjn':
 701                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 702                                         $num = $hebrew[1];
 703                                         break;
 704                                 case 't':
 705                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 706                                         $num = gmdate( 't', $unix );
 707                                         break;
 708                                 case 'xjt':
 709                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 710                                         $num = $hebrew[3];
 711                                         break;
 712                                 case 'L':
 713                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 714                                         $num = gmdate( 'L', $unix );
 715                                         break;
 716                                 case 'Y':
 717                                         $num = substr( $ts, 0, 4 );
 718                                         break;
 719                                 case 'xiY':
 720                                         if ( !$iranian ) $iranian = self::tsToIranian( $ts );
 721                                         $num = $iranian[0];
 722                                         break;
 723                                 case 'xmY':
 724                                         if ( !$hijri ) $hijri = self::tsToHijri( $ts );
 725                                         $num = $hijri[0];
 726                                         break;
 727                                 case 'xjY':
 728                                         if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
 729                                         $num = $hebrew[0];
 730                                         break;
 731                                 case 'xkY':
 732                                         if ( !$thai ) $thai = self::tsToThai( $ts );
 733                                         $num = $thai[0];
 734                                         break;
 735                                 case 'y':
 736                                         $num = substr( $ts, 2, 2 );
 737                                         break;
 738                                 case 'a':
 739                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'am' : 'pm';
 740                                         break;
 741                                 case 'A':
 742                                         $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'AM' : 'PM';
 743                                         break;
 744                                 case 'g':
 745                                         $h = substr( $ts, 8, 2 );
 746                                         $num = $h % 12 ? $h % 12 : 12;
 747                                         break;
 748                                 case 'G':
 749                                         $num = intval( substr( $ts, 8, 2 ) );
 750                                         break;
 751                                 case 'h':
 752                                         $h = substr( $ts, 8, 2 );
 753                                         $num = sprintf( '%02d', $h % 12 ? $h % 12 : 12 );
 754                                         break;
 755                                 case 'H':
 756                                         $num = substr( $ts, 8, 2 );
 757                                         break;
 758                                 case 'i':
 759                                         $num = substr( $ts, 10, 2 );
 760                                         break;
 761                                 case 's':
 762                                         $num = substr( $ts, 12, 2 );
 763                                         break;
 764                                 case 'c':
 765                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 766                                         $s .= gmdate( 'c', $unix );
 767                                         break;
 768                                 case 'r':
 769                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 770                                         $s .= gmdate( 'r', $unix );
 771                                         break;
 772                                 case 'U':
 773                                         if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
 774                                         $num = $unix;
 775                                         break;
 776                                 case '\\':
 777                                         # Backslash escaping
 778                                         if ( $p < strlen( $format ) - 1 ) {
 779                                                 $s .= $format[++$p];
 780                                         } else {
 781                                                 $s .= '\\';
 782                                         }
 783                                         break;
 784                                 case '"':
 785                                         # Quoted literal
 786                                         if ( $p < strlen( $format ) - 1 ) {
 787                                                 $endQuote = strpos( $format, '"', $p + 1 );
 788                                                 if ( $endQuote === false ) {
 789                                                         # No terminating quote, assume literal "
 790                                                         $s .= '"';
 791                                                 } else {
 792                                                         $s .= substr( $format, $p + 1, $endQuote - $p - 1 );
 793                                                         $p = $endQuote;
 794                                                 }
 795                                         } else {
 796                                                 # Quote at end of string, assume literal "
 797                                                 $s .= '"';
 798                                         }
 799                                         break;
 800                                 default:
 801                                         $s .= $format[$p];
 802                         }
 803                         if ( $num !== false ) {
 804                                 if ( $rawToggle || $raw ) {
 805                                         $s .= $num;
 806                                         $raw = false;
 807                                 } elseif ( $roman ) {
 808                                         $s .= self::romanNumeral( $num );
 809                                         $roman = false;
 810                                 } elseif( $hebrewNum ) {
 811                                         $s .= self::hebrewNumeral( $num );
 812                                         $hebrewNum = false;
 813                                 } else {
 814                                         $s .= $this->formatNum( $num, true );
 815                                 }
 816                                 $num = false;
 817                         }
 818                 }
 819                 return $s;
 820         }
 821
 822         private static $GREG_DAYS = array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
 823         private static $IRANIAN_DAYS = array( 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29 );
 824         /**
 825          * Algorithm by Roozbeh Pournader and Mohammad Toossi to convert
 826          * Gregorian dates to Iranian dates. Originally written in C, it
 827          * is released under the terms of GNU Lesser General Public
 828          * License. Conversion to PHP was performed by Niklas Laxström.
 829          *
 830          * Link: http://www.farsiweb.info/jalali/jalali.c
 831          */
 832         private static function tsToIranian( $ts ) {
 833                 $gy = substr( $ts, 0, 4 ) -1600;
 834                 $gm = substr( $ts, 4, 2 ) -1;
 835                 $gd = substr( $ts, 6, 2 ) -1;
 836
 837                 # Days passed from the beginning (including leap years)
 838                 $gDayNo = 365*$gy
 839                         + floor(($gy+3) / 4)
 840                         - floor(($gy+99) / 100)
 841                         + floor(($gy+399) / 400);
 842
 843
 844                 // Add days of the past months of this year
 845                 for( $i = 0; $i < $gm; $i++ ) {
 846                         $gDayNo += self::$GREG_DAYS[$i];
 847                 }
 848
 849                 // Leap years
 850                 if ( $gm > 1 && (($gy%4===0 && $gy%100!==0 || ($gy%400==0)))) {
 851                         $gDayNo++;
 852                 }
 853
 854                 // Days passed in current month
 855                 $gDayNo += $gd;
 856
 857                 $jDayNo = $gDayNo - 79;
 858
 859                 $jNp = floor($jDayNo / 12053);
 860                 $jDayNo %= 12053;
 861
 862                 $jy = 979 + 33*$jNp + 4*floor($jDayNo/1461);
 863                 $jDayNo %= 1461;
 864
 865                 if ( $jDayNo >= 366 ) {
 866                         $jy += floor(($jDayNo-1)/365);
 867                         $jDayNo = floor(($jDayNo-1)%365);
 868                 }
 869
 870                 for ( $i = 0; $i < 11 && $jDayNo >= self::$IRANIAN_DAYS[$i]; $i++ ) {
 871                         $jDayNo -= self::$IRANIAN_DAYS[$i];
 872                 }
 873
 874                 $jm= $i+1;
 875                 $jd= $jDayNo+1;
 876
 877                 return array($jy, $jm, $jd);
 878         }
 879         /**
 880          * Converting Gregorian dates to Hijri dates.
 881          *
 882          * Based on a PHP-Nuke block by Sharjeel which is released under GNU/GPL license
 883          *
 884          * @link http://phpnuke.org/modules.php?name=News&file=article&sid=8234&mode=thread&order=0&thold=0
 885          */
 886         private static function tsToHijri ( $ts ) {
 887                 $year = substr( $ts, 0, 4 );
 888                 $month = substr( $ts, 4, 2 );
 889                 $day = substr( $ts, 6, 2 );
 890
 891                 $zyr = $year;
 892                 $zd=$day;
 893                 $zm=$month;
 894                 $zy=$zyr;
 895
 896
 897
 898                 if (($zy>1582)||(($zy==1582)&&($zm>10))||(($zy==1582)&&($zm==10)&&($zd>14)))
 899                         {
 900
 901
 902                                     $zjd=(int)((1461*($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;
 903                                     }
 904                  else
 905                         {
 906                                     $zjd = 367*$zy-(int)((7*($zy+5001+(int)(($zm-9)/7)))/4)+(int)((275*$zm)/9)+$zd+1729777;
 907                         }
 908
 909                 $zl=$zjd-1948440+10632;
 910                 $zn=(int)(($zl-1)/10631);
 911                 $zl=$zl-10631*$zn+354;
 912                 $zj=((int)((10985-$zl)/5316))*((int)((50*$zl)/17719))+((int)($zl/5670))*((int)((43*$zl)/15238));
 913                 $zl=$zl-((int)((30-$zj)/15))*((int)((17719*$zj)/50))-((int)($zj/16))*((int)((15238*$zj)/43))+29;
 914                 $zm=(int)((24*$zl)/709);
 915                 $zd=$zl-(int)((709*$zm)/24);
 916                 $zy=30*$zn+$zj-30;
 917
 918                 return array ($zy, $zm, $zd);
 919         }
 920
 921         /**
 922          * Converting Gregorian dates to Hebrew dates.
 923          *
 924          * Based on a JavaScript code by Abu Mami and Yisrael Hersch
 925          * (abu-mami@kaluach.net, http://www.kaluach.net), who permitted
 926          * to translate the relevant functions into PHP and release them under
 927          * GNU GPL.
 928          *
 929          * The months are counted from Tishrei = 1. In a leap year, Adar I is 13
 930          * and Adar II is 14. In a non-leap year, Adar is 6.
 931          */
 932         private static function tsToHebrew( $ts ) {
 933                 # Parse date
 934                 $year = substr( $ts, 0, 4 );
 935                 $month = substr( $ts, 4, 2 );
 936                 $day = substr( $ts, 6, 2 );
 937
 938                 # Calculate Hebrew year
 939                 $hebrewYear = $year + 3760;
 940
 941                 # Month number when September = 1, August = 12
 942                 $month += 4;
 943                 if( $month > 12 ) {
 944                         # Next year
 945                         $month -= 12;
 946                         $year++;
 947                         $hebrewYear++;
 948                 }
 949
 950                 # Calculate day of year from 1 September
 951                 $dayOfYear = $day;
 952                 for( $i = 1; $i < $month; $i++ ) {
 953                         if( $i == 6 ) {
 954                                 # February
 955                                 $dayOfYear += 28;
 956                                 # Check if the year is leap
 957                                 if( $year % 400 == 0 || ( $year % 4 == 0 && $year % 100 > 0 ) ) {
 958                                         $dayOfYear++;
 959                                 }
 960                         } elseif( $i == 8 || $i == 10 || $i == 1 || $i == 3 ) {
 961                                 $dayOfYear += 30;
 962                         } else {
 963                                 $dayOfYear += 31;
 964                         }
 965                 }
 966
 967                 # Calculate the start of the Hebrew year
 968                 $start = self::hebrewYearStart( $hebrewYear );
 969
 970                 # Calculate next year's start
 971                 if( $dayOfYear <= $start ) {
 972                         # Day is before the start of the year - it is the previous year
 973                         # Next year's start
 974                         $nextStart = $start;
 975                         # Previous year
 976                         $year--;
 977                         $hebrewYear--;
 978                         # Add days since previous year's 1 September
 979                         $dayOfYear += 365;
 980                         if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
 981                                 # Leap year
 982                                 $dayOfYear++;
 983                         }
 984                         # Start of the new (previous) year
 985                         $start = self::hebrewYearStart( $hebrewYear );
 986                 } else {
 987                         # Next year's start
 988                         $nextStart = self::hebrewYearStart( $hebrewYear + 1 );
 989                 }
 990
 991                 # Calculate Hebrew day of year
 992                 $hebrewDayOfYear = $dayOfYear - $start;
 993
 994                 # Difference between year's days
 995                 $diff = $nextStart - $start;
 996                 # Add 12 (or 13 for leap years) days to ignore the difference between
 997                 # Hebrew and Gregorian year (353 at least vs. 365/6) - now the
 998                 # difference is only about the year type
 999                 if( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
1000                         $diff += 13;
1001                 } else {
1002                         $diff += 12;
1003                 }
1004
1005                 # Check the year pattern, and is leap year
1006                 # 0 means an incomplete year, 1 means a regular year, 2 means a complete year
1007                 # This is mod 30, to work on both leap years (which add 30 days of Adar I)
1008                 # and non-leap years
1009                 $yearPattern = $diff % 30;
1010                 # Check if leap year
1011                 $isLeap = $diff >= 30;
1012
1013                 # Calculate day in the month from number of day in the Hebrew year
1014                 # Don't check Adar - if the day is not in Adar, we will stop before;
1015                 # if it is in Adar, we will use it to check if it is Adar I or Adar II
1016                 $hebrewDay = $hebrewDayOfYear;
1017                 $hebrewMonth = 1;
1018                 $days = 0;
1019                 while( $hebrewMonth <= 12 ) {
1020                         # Calculate days in this month
1021                         if( $isLeap && $hebrewMonth == 6 ) {
1022                                 # Adar in a leap year
1023                                 if( $isLeap ) {
1024                                         # Leap year - has Adar I, with 30 days, and Adar II, with 29 days
1025                                         $days = 30;
1026                                         if( $hebrewDay <= $days ) {
1027                                                 # Day in Adar I
1028                                                 $hebrewMonth = 13;
1029                                         } else {
1030                                                 # Subtract the days of Adar I
1031                                                 $hebrewDay -= $days;
1032                                                 # Try Adar II
1033                                                 $days = 29;
1034                                                 if( $hebrewDay <= $days ) {
1035                                                         # Day in Adar II
1036                                                         $hebrewMonth = 14;
1037                                                 }
1038                                         }
1039                                 }
1040                         } elseif( $hebrewMonth == 2 && $yearPattern == 2 ) {
1041                                 # Cheshvan in a complete year (otherwise as the rule below)
1042                                 $days = 30;
1043                         } elseif( $hebrewMonth == 3 && $yearPattern == 0 ) {
1044                                 # Kislev in an incomplete year (otherwise as the rule below)
1045                                 $days = 29;
1046                         } else {
1047                                 # Odd months have 30 days, even have 29
1048                                 $days = 30 - ( $hebrewMonth - 1 ) % 2;
1049                         }
1050                         if( $hebrewDay <= $days ) {
1051                                 # In the current month
1052                                 break;
1053                         } else {
1054                                 # Subtract the days of the current month
1055                                 $hebrewDay -= $days;
1056                                 # Try in the next month
1057                                 $hebrewMonth++;
1058                         }
1059                 }
1060
1061                 return array( $hebrewYear, $hebrewMonth, $hebrewDay, $days );
1062         }
1063
1064         /**
1065          * This calculates the Hebrew year start, as days since 1 September.
1066          * Based on Carl Friedrich Gauss algorithm for finding Easter date.
1067          * Used for Hebrew date.
1068          */
1069         private static function hebrewYearStart( $year ) {
1070                 $a = intval( ( 12 * ( $year - 1 ) + 17 ) % 19 );
1071                 $b = intval( ( $year - 1 ) % 4 );
1072                 $m = 32.044093161144 + 1.5542417966212 * $a +  $b / 4.0 - 0.0031777940220923 * ( $year - 1 );
1073                 if( $m < 0 ) {
1074                         $m--;
1075                 }
1076                 $Mar = intval( $m );
1077                 if( $m < 0 ) {
1078                         $m++;
1079                 }
1080                 $m -= $Mar;
1081
1082                 $c = intval( ( $Mar + 3 * ( $year - 1 ) + 5 * $b + 5 ) % 7);
1083                 if( $c == 0 && $a > 11 && $m >= 0.89772376543210 ) {
1084                         $Mar++;
1085                 } else if( $c == 1 && $a > 6 && $m >= 0.63287037037037 ) {
1086                         $Mar += 2;
1087                 } else if( $c == 2 || $c == 4 || $c == 6 ) {
1088                         $Mar++;
1089                 }
1090
1091                 $Mar += intval( ( $year - 3761 ) / 100 ) - intval( ( $year - 3761 ) / 400 ) - 24;
1092                 return $Mar;
1093         }
1094
1095         /**
1096          * Algorithm to convert Gregorian dates to Thai solar dates.
1097          *
1098          * Link: http://en.wikipedia.org/wiki/Thai_solar_calendar
1099          *
1100          * @param $ts String: 14-character timestamp
1101          * @return array converted year, month, day
1102          */
1103         private static function tsToThai( $ts ) {
1104                 $gy = substr( $ts, 0, 4 );
1105                 $gm = substr( $ts, 4, 2 );
1106                 $gd = substr( $ts, 6, 2 );
1107
1108                 # Add 543 years to the Gregorian calendar
1109                 # Months and days are identical
1110                 $gy_thai = $gy + 543;
1111
1112                 return array( $gy_thai, $gm, $gd );
1113         }
1114
1115
1116         /**
1117          * Roman number formatting up to 3000
1118          */
1119         static function romanNumeral( $num ) {
1120                 static $table = array(
1121                         array( '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X' ),
1122                         array( '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', 'C' ),
1123                         array( '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM', 'M' ),
1124                         array( '', 'M', 'MM', 'MMM' )
1125                 );
1126
1127                 $num = intval( $num );
1128                 if ( $num > 3000 || $num <= 0 ) {
1129                         return $num;
1130                 }
1131
1132                 $s = '';
1133                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1134                         if ( $num >= $pow10 ) {
1135                                 $s .= $table[$i][floor($num / $pow10)];
1136                         }
1137                         $num = $num % $pow10;
1138                 }
1139                 return $s;
1140         }
1141
1142         /**
1143          * Hebrew Gematria number formatting up to 9999
1144          */
1145         static function hebrewNumeral( $num ) {
1146                 static $table = array(
1147                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' ),
1148                         array( '', 'י', 'כ', 'ל', 'מ', 'נ', 'ס', 'ע', 'פ', 'צ', 'ק' ),
1149                         array( '', 'ק', 'ר', 'ש', 'ת', 'תק', 'תר', 'תש', 'תת', 'תתק', 'תתר' ),
1150                         array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' )
1151                 );
1152
1153                 $num = intval( $num );
1154                 if ( $num > 9999 || $num <= 0 ) {
1155                         return $num;
1156                 }
1157
1158                 $s = '';
1159                 for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
1160                         if ( $num >= $pow10 ) {
1161                                 if ( $num == 15 || $num == 16 ) {
1162                                         $s .= $table[0][9] . $table[0][$num - 9];
1163                                         $num = 0;
1164                                 } else {
1165                                         $s .= $table[$i][intval( ( $num / $pow10 ) )];
1166                                         if( $pow10 == 1000 ) {
1167                                                 $s .= "'";
1168                                         }
1169                                 }
1170                         }
1171                         $num = $num % $pow10;
1172                 }
1173                 if( strlen( $s ) == 2 ) {
1174                         $str = $s . "'";
1175                 } else  {
1176                         $str = substr( $s, 0, strlen( $s ) - 2 ) . '"';
1177                         $str .= substr( $s, strlen( $s ) - 2, 2 );
1178                 }
1179                 $start = substr( $str, 0, strlen( $str ) - 2 );
1180                 $end = substr( $str, strlen( $str ) - 2 );
1181                 switch( $end ) {
1182                         case 'כ':
1183                                 $str = $start . 'ך';
1184                                 break;
1185                         case 'מ':
1186                                 $str = $start . 'ם';
1187                                 break;
1188                         case 'נ':
1189                                 $str = $start . 'ן';
1190                                 break;
1191                         case 'פ':
1192                                 $str = $start . 'ף';
1193                                 break;
1194                         case 'צ':
1195                                 $str = $start . 'ץ';
1196                                 break;
1197                 }
1198                 return $str;
1199         }
1200
1201         /**
1202          * This is meant to be used by time(), date(), and timeanddate() to get
1203          * the date preference they're supposed to use, it should be used in
1204          * all children.
1205          *
1206          *<code>
1207          * function timeanddate([...], $format = true) {
1208          *      $datePreference = $this->dateFormat($format);
1209          * [...]
1210          * }
1211          *</code>
1212          *
1213          * @param $usePrefs Mixed: if true, the user's preference is used
1214          *                         if false, the site/language default is used
1215          *                         if int/string, assumed to be a format.
1216          * @return string
1217          */
1218         function dateFormat( $usePrefs = true ) {
1219                 global $wgUser;
1220
1221                 if( is_bool( $usePrefs ) ) {
1222                         if( $usePrefs ) {
1223                                 $datePreference = $wgUser->getDatePreference();
1224                         } else {
1225                                 $options = User::getDefaultOptions();
1226                                 $datePreference = (string)$options['date'];
1227                         }
1228                 } else {
1229                         $datePreference = (string)$usePrefs;
1230                 }
1231
1232                 // return int
1233                 if( $datePreference == '' ) {
1234                         return 'default';
1235                 }
1236
1237                 return $datePreference;
1238         }
1239
1240         /**
1241          * @param $ts Mixed: the time format which needs to be turned into a
1242          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1243          * @param $adj Bool: whether to adjust the time output according to the
1244          *             user configured offset ($timecorrection)
1245          * @param $format Mixed: true to use user's date format preference
1246          * @param $timecorrection String: the time offset as returned by
1247          *                        validateTimeZone() in Special:Preferences
1248          * @return string
1249          */
1250         function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
1251                 $this->load();
1252                 if ( $adj ) {
1253                         $ts = $this->userAdjust( $ts, $timecorrection );
1254                 }
1255
1256                 $pref = $this->dateFormat( $format );
1257                 if( $pref == 'default' || !isset( $this->dateFormats["$pref date"] ) ) {
1258                         $pref = $this->defaultDateFormat;
1259                 }
1260                 return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
1261         }
1262
1263         /**
1264          * @param $ts Mixed: the time format which needs to be turned into a
1265          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1266          * @param $adj Bool: whether to adjust the time output according to the
1267          *             user configured offset ($timecorrection)
1268          * @param $format Mixed: true to use user's date format preference
1269          * @param $timecorrection String: the time offset as returned by
1270          *                        validateTimeZone() in Special:Preferences
1271          * @return string
1272          */
1273         function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
1274                 $this->load();
1275                 if ( $adj ) {
1276                         $ts = $this->userAdjust( $ts, $timecorrection );
1277                 }
1278
1279                 $pref = $this->dateFormat( $format );
1280                 if( $pref == 'default' || !isset( $this->dateFormats["$pref time"] ) ) {
1281                         $pref = $this->defaultDateFormat;
1282                 }
1283                 return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
1284         }
1285
1286         /**
1287          * @param $ts Mixed: the time format which needs to be turned into a
1288          *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
1289          * @param $adj Bool: whether to adjust the time output according to the
1290          *             user configured offset ($timecorrection)
1291          * @param $format Mixed: what format to return, if it's false output the
1292          *                default one (default true)
1293          * @param $timecorrection String: the time offset as returned by
1294          *                        validateTimeZone() in Special:Preferences
1295          * @return string
1296          */
1297         function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false) {
1298                 $this->load();
1299
1300                 $ts = wfTimestamp( TS_MW, $ts );
1301
1302                 if ( $adj ) {
1303                         $ts = $this->userAdjust( $ts, $timecorrection );
1304                 }
1305
1306                 $pref = $this->dateFormat( $format );
1307                 if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
1308                         $pref = $this->defaultDateFormat;
1309                 }
1310
1311                 return $this->sprintfDate( $this->dateFormats["$pref both"], $ts );
1312         }
1313
1314         function getMessage( $key ) {
1315                 $this->load();
1316                 return isset( $this->messages[$key] ) ? $this->messages[$key] : null;
1317         }
1318
1319         function getAllMessages() {
1320                 $this->load();
1321                 return $this->messages;
1322         }
1323
1324         function iconv( $in, $out, $string ) {
1325                 # For most languages, this is a wrapper for iconv
1326                 return iconv( $in, $out . '//IGNORE', $string );
1327         }
1328
1329         // callback functions for uc(), lc(), ucwords(), ucwordbreaks()
1330         function ucwordbreaksCallbackAscii($matches){
1331                 return $this->ucfirst($matches[1]);
1332         }
1333
1334         function ucwordbreaksCallbackMB($matches){
1335                 return mb_strtoupper($matches[0]);
1336         }
1337
1338         function ucCallback($matches){
1339                 list( $wikiUpperChars ) = self::getCaseMaps();
1340                 return strtr( $matches[1], $wikiUpperChars );
1341         }
1342
1343         function lcCallback($matches){
1344                 list( , $wikiLowerChars ) = self::getCaseMaps();
1345                 return strtr( $matches[1], $wikiLowerChars );
1346         }
1347
1348         function ucwordsCallbackMB($matches){
1349                 return mb_strtoupper($matches[0]);
1350         }
1351
1352         function ucwordsCallbackWiki($matches){
1353                 list( $wikiUpperChars ) = self::getCaseMaps();
1354                 return strtr( $matches[0], $wikiUpperChars );
1355         }
1356
1357         function ucfirst( $str ) {
1358                 if ( empty($str) ) return $str;
1359                 if ( ord($str[0]) < 128 ) return ucfirst($str);
1360                 else return self::uc($str,true); // fall back to more complex logic in case of multibyte strings
1361         }
1362
1363         function uc( $str, $first = false ) {
1364                 if ( function_exists( 'mb_strtoupper' ) ) {
1365                         if ( $first ) {
1366                                 if ( self::isMultibyte( $str ) ) {
1367                                         return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1368                                 } else {
1369                                         return ucfirst( $str );
1370                                 }
1371                         } else {
1372                                 return self::isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
1373                         }
1374                 } else {
1375                         if ( self::isMultibyte( $str ) ) {
1376                                 list( $wikiUpperChars ) = $this->getCaseMaps();
1377                                 $x = $first ? '^' : '';
1378                                 return preg_replace_callback(
1379                                         "/$x([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1380                                         array($this,"ucCallback"),
1381                                         $str
1382                                 );
1383                         } else {
1384                                 return $first ? ucfirst( $str ) : strtoupper( $str );
1385                         }
1386                 }
1387         }
1388
1389         function lcfirst( $str ) {
1390                 if ( empty($str) ) return $str;
1391                 if ( is_string( $str ) && ord($str[0]) < 128 ) {
1392                         // editing string in place = cool
1393                         $str[0]=strtolower($str[0]);
1394                         return $str;
1395                 }
1396                 else return self::lc( $str, true );
1397         }
1398
1399         function lc( $str, $first = false ) {
1400                 if ( function_exists( 'mb_strtolower' ) )
1401                         if ( $first )
1402                                 if ( self::isMultibyte( $str ) )
1403                                         return mb_strtolower( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
1404                                 else
1405                                         return strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 );
1406                         else
1407                                 return self::isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
1408                 else
1409                         if ( self::isMultibyte( $str ) ) {
1410                                 list( , $wikiLowerChars ) = self::getCaseMaps();
1411                                 $x = $first ? '^' : '';
1412                                 return preg_replace_callback(
1413                                         "/$x([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
1414                                         array($this,"lcCallback"),
1415                                         $str
1416                                 );
1417                         } else
1418                                 return $first ? strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 ) : strtolower( $str );
1419         }
1420
1421         function isMultibyte( $str ) {
1422                 return (bool)preg_match( '/[\x80-\xff]/', $str );
1423         }
1424
1425         function ucwords($str) {
1426                 if ( self::isMultibyte( $str ) ) {
1427                         $str = self::lc($str);
1428
1429                         // regexp to find first letter in each word (i.e. after each space)
1430                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)| ([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1431
1432                         // function to use to capitalize a single char
1433                         if ( function_exists( 'mb_strtoupper' ) )
1434                                 return preg_replace_callback(
1435                                         $replaceRegexp,
1436                                         array($this,"ucwordsCallbackMB"),
1437                                         $str
1438                                 );
1439                         else
1440                                 return preg_replace_callback(
1441                                         $replaceRegexp,
1442                                         array($this,"ucwordsCallbackWiki"),
1443                                         $str
1444                                 );
1445                 }
1446                 else
1447                         return ucwords( strtolower( $str ) );
1448         }
1449
1450   # capitalize words at word breaks
1451         function ucwordbreaks($str){
1452                 if (self::isMultibyte( $str ) ) {
1453                         $str = self::lc($str);
1454
1455                         // since \b doesn't work for UTF-8, we explicitely define word break chars
1456                         $breaks= "[ \-\(\)\}\{\.,\?!]";
1457
1458                         // find first letter after word break
1459                         $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)|$breaks([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";
1460
1461                         if ( function_exists( 'mb_strtoupper' ) )
1462                                 return preg_replace_callback(
1463                                         $replaceRegexp,
1464                                         array($this,"ucwordbreaksCallbackMB"),
1465                                         $str
1466                                 );
1467                         else
1468                                 return preg_replace_callback(
1469                                         $replaceRegexp,
1470                                         array($this,"ucwordsCallbackWiki"),
1471                                         $str
1472                                 );
1473                 }
1474                 else
1475                         return preg_replace_callback(
1476                         '/\b([\w\x80-\xff]+)\b/',
1477                         array($this,"ucwordbreaksCallbackAscii"),
1478                         $str );
1479         }
1480
1481         /**
1482          * Return a case-folded representation of $s
1483          *
1484          * This is a representation such that caseFold($s1)==caseFold($s2) if $s1
1485          * and $s2 are the same except for the case of their characters. It is not
1486          * necessary for the value returned to make sense when displayed.
1487          *
1488          * Do *not* perform any other normalisation in this function. If a caller
1489          * uses this function when it should be using a more general normalisation
1490          * function, then fix the caller.
1491          */
1492         function caseFold( $s ) {
1493                 return $this->uc( $s );
1494         }
1495
1496         function checkTitleEncoding( $s ) {
1497                 if( is_array( $s ) ) {
1498                         wfDebugDieBacktrace( 'Given array to checkTitleEncoding.' );
1499                 }
1500                 # Check for non-UTF-8 URLs
1501                 $ishigh = preg_match( '/[\x80-\xff]/', $s);
1502                 if(!$ishigh) return $s;
1503
1504                 $isutf8 = preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1505                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})+$/', $s );
1506                 if( $isutf8 ) return $s;
1507
1508                 return $this->iconv( $this->fallback8bitEncoding(), "utf-8", $s );
1509         }
1510
1511         function fallback8bitEncoding() {
1512                 $this->load();
1513                 return $this->fallback8bitEncoding;
1514         }
1515
1516         /**
1517          * Some languages have special punctuation to strip out
1518          * or characters which need to be converted for MySQL's
1519          * indexing to grok it correctly. Make such changes here.
1520          *
1521          * @param $string String
1522          * @return String
1523          */
1524         function stripForSearch( $string ) {
1525                 global $wgDBtype;
1526                 if ( $wgDBtype != 'mysql' ) {
1527                         return $string;
1528                 }
1529
1530
1531                 wfProfileIn( __METHOD__ );
1532
1533                 // MySQL fulltext index doesn't grok utf-8, so we
1534                 // need to fold cases and convert to hex
1535                 $out = preg_replace_callback(
1536                         "/([\\xc0-\\xff][\\x80-\\xbf]*)/",
1537                         array( $this, 'stripForSearchCallback' ),
1538                         $this->lc( $string ) );
1539
1540                 // And to add insult to injury, the default indexing
1541                 // ignores short words... Pad them so we can pass them
1542                 // through without reconfiguring the server...
1543                 $minLength = $this->minSearchLength();
1544                 if( $minLength > 1 ) {
1545                         $n = $minLength-1;
1546                         $out = preg_replace(
1547                                 "/\b(\w{1,$n})\b/",
1548                                 "$1U800",
1549                                 $out );
1550                 }
1551
1552                 // Periods within things like hostnames and IP addresses
1553                 // are also important -- we want a search for "example.com"
1554                 // or "192.168.1.1" to work sanely.
1555                 //
1556                 // MySQL's search seems to ignore them, so you'd match on
1557                 // "example.wikipedia.com" and "192.168.83.1" as well.
1558                 $out = preg_replace(
1559                         "/(\w)\.(\w|\*)/u",
1560                         "$1U82e$2",
1561                         $out );
1562
1563                 wfProfileOut( __METHOD__ );
1564                 return $out;
1565         }
1566
1567         /**
1568          * Armor a case-folded UTF-8 string to get through MySQL's
1569          * fulltext search without being mucked up by funny charset
1570          * settings or anything else of the sort.
1571          */
1572         protected function stripForSearchCallback( $matches ) {
1573                 return 'U8' . bin2hex( $matches[1] );
1574         }
1575
1576         /**
1577          * Check MySQL server's ft_min_word_len setting so we know
1578          * if we need to pad short words...
1579          */
1580         protected function minSearchLength() {
1581                 if( !isset( $this->minSearchLength ) ) {
1582                         $sql = "show global variables like 'ft\\_min\\_word\\_len'";
1583                         $dbr = wfGetDB( DB_SLAVE );
1584                         $result = $dbr->query( $sql );
1585                         $row = $result->fetchObject();
1586                         $result->free();
1587
1588                         if( $row && $row->Variable_name == 'ft_min_word_len' ) {
1589                                 $this->minSearchLength = intval( $row->Value );
1590                         } else {
1591                                 $this->minSearchLength = 0;
1592                         }
1593                 }
1594                 return $this->minSearchLength;
1595         }
1596
1597         function convertForSearchResult( $termsArray ) {
1598                 # some languages, e.g. Chinese, need to do a conversion
1599                 # in order for search results to be displayed correctly
1600                 return $termsArray;
1601         }
1602
1603         /**
1604          * Get the first character of a string.
1605          *
1606          * @param $s string
1607          * @return string
1608          */
1609         function firstChar( $s ) {
1610                 $matches = array();
1611                 preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
1612                 '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})/', $s, $matches);
1613
1614                 if ( isset( $matches[1] ) ) {
1615                         if ( strlen( $matches[1] ) != 3 ) {
1616                                 return $matches[1];
1617                         }
1618
1619                         // Break down Hangul syllables to grab the first jamo
1620                         $code = utf8ToCodepoint( $matches[1] );
1621                         if ( $code < 0xac00 || 0xd7a4 <= $code) {
1622                                 return $matches[1];
1623                         } elseif ( $code < 0xb098 ) {
1624                                 return "\xe3\x84\xb1";
1625                         } elseif ( $code < 0xb2e4 ) {
1626                                 return "\xe3\x84\xb4";
1627                         } elseif ( $code < 0xb77c ) {
1628                                 return "\xe3\x84\xb7";
1629                         } elseif ( $code < 0xb9c8 ) {
1630                                 return "\xe3\x84\xb9";
1631                         } elseif ( $code < 0xbc14 ) {
1632                                 return "\xe3\x85\x81";
1633                         } elseif ( $code < 0xc0ac ) {
1634                                 return "\xe3\x85\x82";
1635                         } elseif ( $code < 0xc544 ) {
1636                                 return "\xe3\x85\x85";
1637                         } elseif ( $code < 0xc790 ) {
1638                                 return "\xe3\x85\x87";
1639                         } elseif ( $code < 0xcc28 ) {
1640                                 return "\xe3\x85\x88";
1641                         } elseif ( $code < 0xce74 ) {
1642                                 return "\xe3\x85\x8a";
1643                         } elseif ( $code < 0xd0c0 ) {
1644                                 return "\xe3\x85\x8b";
1645                         } elseif ( $code < 0xd30c ) {
1646                                 return "\xe3\x85\x8c";
1647                         } elseif ( $code < 0xd558 ) {
1648                                 return "\xe3\x85\x8d";
1649                         } else {
1650                                 return "\xe3\x85\x8e";
1651                         }
1652                 } else {
1653                         return "";
1654                 }
1655         }
1656
1657         function initEncoding() {
1658                 # Some languages may have an alternate char encoding option
1659                 # (Esperanto X-coding, Japanese furigana conversion, etc)
1660                 # If this language is used as the primary content language,
1661                 # an override to the defaults can be set here on startup.
1662         }
1663
1664         function recodeForEdit( $s ) {
1665                 # For some languages we'll want to explicitly specify
1666                 # which characters make it into the edit box raw
1667                 # or are converted in some way or another.
1668                 # Note that if wgOutputEncoding is different from
1669                 # wgInputEncoding, this text will be further converted
1670                 # to wgOutputEncoding.
1671                 global $wgEditEncoding;
1672                 if( $wgEditEncoding == '' or
1673                   $wgEditEncoding == 'UTF-8' ) {
1674                         return $s;
1675                 } else {
1676                         return $this->iconv( 'UTF-8', $wgEditEncoding, $s );
1677                 }
1678         }
1679
1680         function recodeInput( $s ) {
1681                 # Take the previous into account.
1682                 global $wgEditEncoding;
1683                 if($wgEditEncoding != "") {
1684                         $enc = $wgEditEncoding;
1685                 } else {
1686                         $enc = 'UTF-8';
1687                 }
1688                 if( $enc == 'UTF-8' ) {
1689                         return $s;
1690                 } else {
1691                         return $this->iconv( $enc, 'UTF-8', $s );
1692                 }
1693         }
1694
1695         /**
1696          * For right-to-left language support
1697          *
1698          * @return bool
1699          */
1700         function isRTL() {
1701                 $this->load();
1702                 return $this->rtl;
1703         }
1704
1705         /**
1706          * A hidden direction mark (LRM or RLM), depending on the language direction
1707          *
1708          * @return string
1709          */
1710         function getDirMark() {
1711                 return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
1712         }
1713
1714         /**
1715          * An arrow, depending on the language direction
1716          *
1717          * @return string
1718          */
1719         function getArrow() {
1720                 return $this->isRTL() ? '←' : '→';
1721         }
1722
1723         /**
1724          * To allow "foo[[bar]]" to extend the link over the whole word "foobar"
1725          *
1726          * @return bool
1727          */
1728         function linkPrefixExtension() {
1729                 $this->load();
1730                 return $this->linkPrefixExtension;
1731         }
1732
1733         function &getMagicWords() {
1734                 $this->load();
1735                 return $this->magicWords;
1736         }
1737
1738         # Fill a MagicWord object with data from here
1739         function getMagic( &$mw ) {
1740                 if ( !$this->mMagicHookDone ) {
1741                         $this->mMagicHookDone = true;
1742                         wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
1743                 }
1744                 if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
1745                         $rawEntry = $this->mMagicExtensions[$mw->mId];
1746                 } else {
1747                         $magicWords =& $this->getMagicWords();
1748                         if ( isset( $magicWords[$mw->mId] ) ) {
1749                                 $rawEntry = $magicWords[$mw->mId];
1750                         } else {
1751                                 # Fall back to English if local list is incomplete
1752                                 $magicWords =& Language::getMagicWords();
1753                                 if ( !isset($magicWords[$mw->mId]) ) {
1754                                         throw new MWException("Magic word '{$mw->mId}' not found" );
1755                                 }
1756                                 $rawEntry = $magicWords[$mw->mId];
1757                         }
1758                 }
1759
1760                 if( !is_array( $rawEntry ) ) {
1761                         error_log( "\"$rawEntry\" is not a valid magic thingie for \"$mw->mId\"" );
1762                 } else {
1763                         $mw->mCaseSensitive = $rawEntry[0];
1764                         $mw->mSynonyms = array_slice( $rawEntry, 1 );
1765                 }
1766         }
1767
1768         /**
1769          * Add magic words to the extension array
1770          */
1771         function addMagicWordsByLang( $newWords ) {
1772                 $code = $this->getCode();
1773                 $fallbackChain = array();
1774                 while ( $code && !in_array( $code, $fallbackChain ) ) {
1775                         $fallbackChain[] = $code;
1776                         $code = self::getFallbackFor( $code );
1777                 }
1778                 if ( !in_array( 'en', $fallbackChain ) ) {
1779                         $fallbackChain[] = 'en';
1780                 }
1781                 $fallbackChain = array_reverse( $fallbackChain );
1782                 foreach ( $fallbackChain as $code ) {
1783                         if ( isset( $newWords[$code] ) ) {
1784                                 $this->mMagicExtensions = $newWords[$code] + $this->mMagicExtensions;
1785                         }
1786                 }
1787         }
1788
1789         /**
1790          * Get special page names, as an associative array
1791          *   case folded alias => real name
1792          */
1793         function getSpecialPageAliases() {
1794                 $this->load();
1795
1796                 // Cache aliases because it may be slow to load them
1797                 if ( !isset( $this->mExtendedSpecialPageAliases ) ) {
1798
1799                         // Initialise array
1800                         $this->mExtendedSpecialPageAliases = $this->specialPageAliases;
1801
1802                         global $wgExtensionAliasesFiles;
1803                         foreach ( $wgExtensionAliasesFiles as $file ) {
1804
1805                                 // Fail fast
1806                                 if ( !file_exists($file) )
1807                                         throw new MWException( "Aliases file does not exist: $file" );
1808
1809                                 $aliases = array();
1810                                 require($file);
1811
1812                                 // Check the availability of aliases
1813                                 if ( !isset($aliases['en']) )
1814                                         throw new MWException( "Malformed aliases file: $file" );
1815
1816                                 // Merge all aliases in fallback chain
1817                                 $code = $this->getCode();
1818                                 do {
1819                                         if ( !isset($aliases[$code]) ) continue;
1820
1821                                         $aliases[$code] = $this->fixSpecialPageAliases( $aliases[$code] );
1822                                         /* Merge the aliases, THIS will break if there is special page name
1823                                         * which looks like a numerical key, thanks to PHP...
1824                                         * See the array_merge_recursive manual entry */
1825                                         $this->mExtendedSpecialPageAliases = array_merge_recursive(
1826                                                 $this->mExtendedSpecialPageAliases, $aliases[$code] );
1827
1828                                 } while ( $code = self::getFallbackFor( $code ) );
1829                         }
1830
1831                         wfRunHooks( 'LanguageGetSpecialPageAliases',
1832                                 array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
1833                 }
1834
1835                 return $this->mExtendedSpecialPageAliases;
1836         }
1837
1838         /**
1839          * Function to fix special page aliases. Will convert the first letter to
1840          * upper case and spaces to underscores. Can be given a full aliases array,
1841          * in which case it will recursively fix all aliases.
1842          */
1843         public function fixSpecialPageAliases( $mixed ) {
1844                 // Work recursively until in string level
1845                 if ( is_array($mixed) ) {
1846                         $callback = array( $this, 'fixSpecialPageAliases' );
1847                         return array_map( $callback, $mixed );
1848                 }
1849                 return str_replace( ' ', '_', $this->ucfirst( $mixed ) );
1850         }
1851
1852         /**
1853          * Italic is unsuitable for some languages
1854          *
1855          * @param $text String: the text to be emphasized.
1856          * @return string
1857          */
1858         function emphasize( $text ) {
1859                 return "<em>$text</em>";
1860         }
1861
1862          /**
1863           * Normally we output all numbers in plain en_US style, that is
1864           * 293,291.235 for twohundredninetythreethousand-twohundredninetyone
1865           * point twohundredthirtyfive. However this is not sutable for all
1866           * languages, some such as Pakaran want ੨੯੩,੨੯੫.੨੩੫ and others such as
1867           * Icelandic just want to use commas instead of dots, and dots instead
1868           * of commas like "293.291,235".
1869           *
1870           * An example of this function being called:
1871           * <code>
1872           * wfMsg( 'message', $wgLang->formatNum( $num ) )
1873           * </code>
1874           *
1875           * See LanguageGu.php for the Gujarati implementation and
1876           * $separatorTransformTable on MessageIs.php for
1877           * the , => . and . => , implementation.
1878           *
1879           * @todo check if it's viable to use localeconv() for the decimal
1880           *       separator thing.
1881           * @param $number Mixed: the string to be formatted, should be an integer
1882           *        or a floating point number.
1883           * @param $nocommafy Bool: set to true for special numbers like dates
1884           * @return string
1885           */
1886         function formatNum( $number, $nocommafy = false ) {
1887                 global $wgTranslateNumerals;
1888                 if (!$nocommafy) {
1889                         $number = $this->commafy($number);
1890                         $s = $this->separatorTransformTable();
1891                         if (!is_null($s)) { $number = strtr($number, $s); }
1892                 }
1893
1894                 if ($wgTranslateNumerals) {
1895                         $s = $this->digitTransformTable();
1896                         if (!is_null($s)) { $number = strtr($number, $s); }
1897                 }
1898
1899                 return $number;
1900         }
1901
1902         function parseFormattedNumber( $number ) {
1903                 $s = $this->digitTransformTable();
1904                 if (!is_null($s)) { $number = strtr($number, array_flip($s)); }
1905
1906                 $s = $this->separatorTransformTable();
1907                 if (!is_null($s)) { $number = strtr($number, array_flip($s)); }
1908
1909                 $number = strtr( $number, array (',' => '') );
1910                 return $number;
1911         }
1912
1913         /**
1914          * Adds commas to a given number
1915          *
1916          * @param $_ mixed
1917          * @return string
1918          */
1919         function commafy($_) {
1920                 return strrev((string)preg_replace('/(\d{3})(?=\d)(?!\d*\.)/','$1,',strrev($_)));
1921         }
1922
1923         function digitTransformTable() {
1924                 $this->load();
1925                 return $this->digitTransformTable;
1926         }
1927
1928         function separatorTransformTable() {
1929                 $this->load();
1930                 return $this->separatorTransformTable;
1931         }
1932
1933
1934         /**
1935          * For the credit list in includes/Credits.php (action=credits)
1936          *
1937          * @param $l Array
1938          * @return string
1939          */
1940         function listToText( $l ) {
1941                 $s = '';
1942                 $m = count($l) - 1;
1943                 for ($i = $m; $i >= 0; $i--) {
1944                         if ($i == $m) {
1945                                 $s = $l[$i];
1946                         } else if ($i == $m - 1) {
1947                                 $s = $l[$i] . $this->getMessageFromDB( 'and' ) . $this->getMessageFromDB( 'word-separator' ) . $s;
1948                         } else {
1949                                 $s = $l[$i] . $this->getMessageFromDB( 'comma-separator' ) . $s;
1950                         }
1951                 }
1952                 return $s;
1953         }
1954
1955         /**
1956          * Take a list of strings and build a locale-friendly comma-separated
1957          * list, using the local comma-separator message.
1958          * @param $list array of strings to put in a comma list
1959          * @return string
1960          */
1961         function commaList( $list, $forContent = false ) {
1962                 return implode(
1963                         $list,
1964                         wfMsgExt( 'comma-separator', array( 'escapenoentities', 'language' => $this ) ) );
1965         }
1966
1967         /**
1968          * Same as commaList, but separate it with the pipe instead.
1969          * @param $list array of strings to put in a pipe list
1970          * @return string
1971          */
1972         function pipeList( $list ) {
1973                 return implode(
1974                         $list,
1975                         wfMsgExt( 'pipe-separator', array( 'escapenoentities', 'language' => $this ) ) );
1976         }
1977
1978         /**
1979          * Truncate a string to a specified length in bytes, appending an optional
1980          * string (e.g. for ellipses)
1981          *
1982          * The database offers limited byte lengths for some columns in the database;
1983          * multi-byte character sets mean we need to ensure that only whole characters
1984          * are included, otherwise broken characters can be passed to the user
1985          *
1986          * If $length is negative, the string will be truncated from the beginning
1987          *
1988          * @param $string String to truncate
1989          * @param $length Int: maximum length (excluding ellipses)
1990          * @param $ellipsis String to append to the truncated text
1991          * @return string
1992          */
1993         function truncate( $string, $length, $ellipsis = "" ) {
1994                 if( $length == 0 ) {
1995                         return $ellipsis;
1996                 }
1997                 if ( strlen( $string ) <= abs( $length ) ) {
1998                         return $string;
1999                 }
2000                 if( $length > 0 ) {
2001                         $string = substr( $string, 0, $length );
2002                         $char = ord( $string[strlen( $string ) - 1] );
2003                         $m = array();
2004                         if ($char >= 0xc0) {
2005                                 # We got the first byte only of a multibyte char; remove it.
2006                                 $string = substr( $string, 0, -1 );
2007                         } elseif( $char >= 0x80 &&
2008                                   preg_match( '/^(.*)(?:[\xe0-\xef][\x80-\xbf]|' .
2009                                               '[\xf0-\xf7][\x80-\xbf]{1,2})$/', $string, $m ) ) {
2010                             # We chopped in the middle of a character; remove it
2011                                 $string = $m[1];
2012                         }
2013                         return $string . $ellipsis;
2014                 } else {
2015                         $string = substr( $string, $length );
2016                         $char = ord( $string[0] );
2017                         if( $char >= 0x80 && $char < 0xc0 ) {
2018                                 # We chopped in the middle of a character; remove the whole thing
2019                                 $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
2020                         }
2021                         return $ellipsis . $string;
2022                 }
2023         }
2024
2025         /**
2026          * Grammatical transformations, needed for inflected languages
2027          * Invoked by putting {{grammar:case|word}} in a message
2028          *
2029          * @param $word string
2030          * @param $case string
2031          * @return string
2032          */
2033         function convertGrammar( $word, $case ) {
2034                 global $wgGrammarForms;
2035                 if ( isset($wgGrammarForms[$this->getCode()][$case][$word]) ) {
2036                         return $wgGrammarForms[$this->getCode()][$case][$word];
2037                 }
2038                 return $word;
2039         }
2040
2041         /**
2042          * Plural form transformations, needed for some languages.
2043          * For example, there are 3 form of plural in Russian and Polish,
2044          * depending on "count mod 10". See [[w:Plural]]
2045          * For English it is pretty simple.
2046          *
2047          * Invoked by putting {{plural:count|wordform1|wordform2}}
2048          * or {{plural:count|wordform1|wordform2|wordform3}}
2049          *
2050          * Example: {{plural:{{NUMBEROFARTICLES}}|article|articles}}
2051          *
2052          * @param $count Integer: non-localized number
2053          * @param $forms Array: different plural forms
2054          * @return string Correct form of plural for $count in this language
2055          */
2056         function convertPlural( $count, $forms ) {
2057                 if ( !count($forms) ) { return ''; }
2058                 $forms = $this->preConvertPlural( $forms, 2 );
2059
2060                 return ( $count == 1 ) ? $forms[0] : $forms[1];
2061         }
2062
2063         /**
2064          * Checks that convertPlural was given an array and pads it to requested
2065          * amound of forms by copying the last one.
2066          *
2067          * @param $count Integer: How many forms should there be at least
2068          * @param $forms Array of forms given to convertPlural
2069          * @return array Padded array of forms or an exception if not an array
2070          */
2071         protected function preConvertPlural( /* Array */ $forms, $count ) {
2072                 while ( count($forms) < $count ) {
2073                         $forms[] = $forms[count($forms)-1];
2074                 }
2075                 return $forms;
2076         }
2077
2078         /**
2079          * For translaing of expiry times
2080          * @param $str String: the validated block time in English
2081          * @return Somehow translated block time
2082          * @see LanguageFi.php for example implementation
2083          */
2084         function translateBlockExpiry( $str ) {
2085
2086                 $scBlockExpiryOptions = $this->getMessageFromDB( 'ipboptions' );
2087
2088                 if ( $scBlockExpiryOptions == '-') {
2089                         return $str;
2090                 }
2091
2092                 foreach (explode(',', $scBlockExpiryOptions) as $option) {
2093                         if ( strpos($option, ":") === false )
2094                                 continue;
2095                         list($show, $value) = explode(":", $option);
2096                         if ( strcmp ( $str, $value) == 0 ) {
2097                                 return htmlspecialchars( trim( $show ) );
2098                         }
2099                 }
2100
2101                 return $str;
2102         }
2103
2104         /**
2105          * languages like Chinese need to be segmented in order for the diff
2106          * to be of any use
2107          *
2108          * @param $text String
2109          * @return String
2110          */
2111         function segmentForDiff( $text ) {
2112                 return $text;
2113         }
2114
2115         /**
2116          * and unsegment to show the result
2117          *
2118          * @param $text String
2119          * @return String
2120          */
2121         function unsegmentForDiff( $text ) {
2122                 return $text;
2123         }
2124
2125         # convert text to different variants of a language.
2126         function convert( $text, $isTitle = false) {
2127                 return $this->mConverter->convert($text, $isTitle);
2128         }
2129
2130         # Convert text from within Parser
2131         function parserConvert( $text, &$parser ) {
2132                 return $this->mConverter->parserConvert( $text, $parser );
2133         }
2134
2135         # Check if this is a language with variants
2136         function hasVariants(){
2137                 return sizeof($this->getVariants())>1;
2138         }
2139
2140         # Put custom tags (e.g. -{ }-) around math to prevent conversion
2141         function armourMath($text){
2142                 return $this->mConverter->armourMath($text);
2143         }
2144
2145
2146         /**
2147          * Perform output conversion on a string, and encode for safe HTML output.
2148          * @param $text String
2149          * @param $isTitle Bool -- wtf?
2150          * @return string
2151          * @todo this should get integrated somewhere sane
2152          */
2153         function convertHtml( $text, $isTitle = false ) {
2154                 return htmlspecialchars( $this->convert( $text, $isTitle ) );
2155         }
2156
2157         function convertCategoryKey( $key ) {
2158                 return $this->mConverter->convertCategoryKey( $key );
2159         }
2160
2161         /**
2162          * get the list of variants supported by this langauge
2163          * see sample implementation in LanguageZh.php
2164          *
2165          * @return array an array of language codes
2166          */
2167         function getVariants() {
2168                 return $this->mConverter->getVariants();
2169         }
2170
2171
2172         function getPreferredVariant( $fromUser = true ) {
2173                 return $this->mConverter->getPreferredVariant( $fromUser );
2174         }
2175
2176         /**
2177          * if a language supports multiple variants, it is
2178          * possible that non-existing link in one variant
2179          * actually exists in another variant. this function
2180          * tries to find it. See e.g. LanguageZh.php
2181          *
2182          * @param $link String: the name of the link
2183          * @param $nt Mixed: the title object of the link
2184          * @return null the input parameters may be modified upon return
2185          */
2186         function findVariantLink( &$link, &$nt, $forTemplate = false ) {
2187                 $this->mConverter->findVariantLink($link, $nt, $forTemplate );
2188         }
2189
2190         /**
2191          * If a language supports multiple variants, converts text
2192          * into an array of all possible variants of the text:
2193          *  'variant' => text in that variant
2194          */
2195
2196         function convertLinkToAllVariants($text){
2197                 return $this->mConverter->convertLinkToAllVariants($text);
2198         }
2199
2200
2201         /**
2202          * returns language specific options used by User::getPageRenderHash()
2203          * for example, the preferred language variant
2204          *
2205          * @return string
2206          */
2207         function getExtraHashOptions() {
2208                 return $this->mConverter->getExtraHashOptions();
2209         }
2210
2211         /**
2212          * for languages that support multiple variants, the title of an
2213          * article may be displayed differently in different variants. this
2214          * function returns the apporiate title defined in the body of the article.
2215          *
2216          * @return string
2217          */
2218         function getParsedTitle() {
2219                 return $this->mConverter->getParsedTitle();
2220         }
2221
2222         /**
2223          * Enclose a string with the "no conversion" tag. This is used by
2224          * various functions in the Parser
2225          *
2226          * @param $text String: text to be tagged for no conversion
2227          * @param $noParse
2228          * @return string the tagged text
2229          */
2230         function markNoConversion( $text, $noParse=false ) {
2231                 return $this->mConverter->markNoConversion( $text, $noParse );
2232         }
2233
2234         /**
2235          * A regular expression to match legal word-trailing characters
2236          * which should be merged onto a link of the form [[foo]]bar.
2237          *
2238          * @return string
2239          */
2240         function linkTrail() {
2241                 $this->load();
2242                 return $this->linkTrail;
2243         }
2244
2245         function getLangObj() {
2246                 return $this;
2247         }
2248
2249         /**
2250          * Get the RFC 3066 code for this language object
2251          */
2252         function getCode() {
2253                 return $this->mCode;
2254         }
2255
2256         function setCode( $code ) {
2257                 $this->mCode = $code;
2258         }
2259
2260         static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
2261                 return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
2262         }
2263
2264         static function getMessagesFileName( $code ) {
2265                 global $IP;
2266                 return self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
2267         }
2268
2269         static function getClassFileName( $code ) {
2270                 global $IP;
2271                 return self::getFileName( "$IP/languages/classes/Language", $code, '.php' );
2272         }
2273
2274         static function getLocalisationArray( $code, $disableCache = false ) {
2275                 self::loadLocalisation( $code, $disableCache );
2276                 return self::$mLocalisationCache[$code];
2277         }
2278
2279         /**
2280          * Load localisation data for a given code into the static cache
2281          *
2282          * @return array Dependencies, map of filenames to mtimes
2283          */
2284         static function loadLocalisation( $code, $disableCache = false ) {
2285                 static $recursionGuard = array();
2286                 global $wgMemc, $wgEnableSerializedMessages, $wgCheckSerialized;
2287
2288                 if ( !$code ) {
2289                         throw new MWException( "Invalid language code requested" );
2290                 }
2291
2292                 if ( !$disableCache ) {
2293                         # Try the per-process cache
2294                         if ( isset( self::$mLocalisationCache[$code] ) ) {
2295                                 return self::$mLocalisationCache[$code]['deps'];
2296                         }
2297
2298                         wfProfileIn( __METHOD__ );
2299
2300                         # Try the serialized directory
2301                         if( $wgEnableSerializedMessages ) {
2302                                 $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
2303                                 if ( $cache ) {
2304                                         if ( $wgCheckSerialized && self::isLocalisationOutOfDate( $cache ) ) {
2305                                                 $cache = false;
2306                                                 wfDebug( "Language::loadLocalisation(): precompiled data file for $code is out of date\n" );
2307                                         } else {
2308                                                 self::$mLocalisationCache[$code] = $cache;
2309                                                 wfDebug( "Language::loadLocalisation(): got localisation for $code from precompiled data file\n" );
2310                                                 wfProfileOut( __METHOD__ );
2311                                                 return self::$mLocalisationCache[$code]['deps'];
2312                                         }
2313                                 }
2314                         }
2315
2316                         # Try the global cache
2317                         $memcKey = wfMemcKey('localisation', $code );
2318                         $fbMemcKey = wfMemcKey('fallback', $cache['fallback'] );
2319                         $cache = $wgMemc->get( $memcKey );
2320                         if ( $cache ) {
2321                                 if ( self::isLocalisationOutOfDate( $cache ) ) {
2322                                         $wgMemc->delete( $memcKey );
2323                                         $wgMemc->delete( $fbMemcKey );
2324                                         $cache = false;
2325                                         wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired\n" );
2326                                 } else {
2327                                         self::$mLocalisationCache[$code] = $cache;
2328                                         wfDebug( "Language::loadLocalisation(): got localisation for $code from cache\n" );
2329                                         wfProfileOut( __METHOD__ );
2330                                         return $cache['deps'];
2331                                 }
2332                         }
2333                 } else {
2334                         wfProfileIn( __METHOD__ );
2335                 }
2336
2337                 # Default fallback, may be overridden when the messages file is included
2338                 if ( $code != 'en' ) {
2339                         $fallback = 'en';
2340                 } else {
2341                         $fallback = false;
2342                 }
2343
2344                 # Load the primary localisation from the source file
2345                 $filename = self::getMessagesFileName( $code );
2346                 if ( !file_exists( $filename ) ) {
2347                         wfDebug( "Language::loadLocalisation(): no localisation file for $code, using implicit fallback to en\n" );
2348                         $cache = compact( self::$mLocalisationKeys ); // Set correct fallback
2349                         $deps = array();
2350                 } else {
2351                         $deps = array( $filename => filemtime( $filename ) );
2352                         require( $filename );
2353                         $cache = compact( self::$mLocalisationKeys );
2354                         wfDebug( "Language::loadLocalisation(): got localisation for $code from source\n" );
2355                 }
2356
2357                 if ( !empty( $fallback ) ) {
2358                         # Load the fallback localisation, with a circular reference guard
2359                         if ( isset( $recursionGuard[$code] ) ) {
2360                                 throw new MWException( "Error: Circular fallback reference in language code $code" );
2361                         }
2362                         $recursionGuard[$code] = true;
2363                         $newDeps = self::loadLocalisation( $fallback, $disableCache );
2364                         unset( $recursionGuard[$code] );
2365
2366                         $secondary = self::$mLocalisationCache[$fallback];
2367                         $deps = array_merge( $deps, $newDeps );
2368
2369                         # Merge the fallback localisation with the current localisation
2370                         foreach ( self::$mLocalisationKeys as $key ) {
2371                                 if ( isset( $cache[$key] ) ) {
2372                                         if ( isset( $secondary[$key] ) ) {
2373                                                 if ( in_array( $key, self::$mMergeableMapKeys ) ) {
2374                                                         $cache[$key] = $cache[$key] + $secondary[$key];
2375                                                 } elseif ( in_array( $key, self::$mMergeableListKeys ) ) {
2376                                                         $cache[$key] = array_merge( $secondary[$key], $cache[$key] );
2377                                                 } elseif ( in_array( $key, self::$mMergeableAliasListKeys ) ) {
2378                                                         $cache[$key] = array_merge_recursive( $cache[$key], $secondary[$key] );
2379                                                 }
2380                                         }
2381                                 } else {
2382                                         $cache[$key] = $secondary[$key];
2383                                 }
2384                         }
2385
2386                         # Merge bookstore lists if requested
2387                         if ( !empty( $cache['bookstoreList']['inherit'] ) ) {
2388                                 $cache['bookstoreList'] = array_merge( $cache['bookstoreList'], $secondary['bookstoreList'] );
2389                         }
2390                         if ( isset( $cache['bookstoreList']['inherit'] ) ) {
2391                                 unset( $cache['bookstoreList']['inherit'] );
2392                         }
2393                 }
2394
2395                 # Add dependencies to the cache entry
2396                 $cache['deps'] = $deps;
2397
2398                 # Replace spaces with underscores in namespace names
2399                 $cache['namespaceNames'] = str_replace( ' ', '_', $cache['namespaceNames'] );
2400
2401                 # And do the same for specialpage aliases. $page is an array.
2402                 foreach ( $cache['specialPageAliases'] as &$page ) {
2403                         $page = str_replace( ' ', '_', $page );
2404                 }
2405                 # Decouple the reference to prevent accidental damage
2406                 unset($page);
2407
2408                 # Save to both caches
2409                 self::$mLocalisationCache[$code] = $cache;
2410                 if ( !$disableCache ) {
2411                         $wgMemc->set( $memcKey, $cache );
2412                         $wgMemc->set( $fbMemcKey, (string) $cache['fallback'] );
2413                 }
2414
2415                 wfProfileOut( __METHOD__ );
2416                 return $deps;
2417         }
2418
2419         /**
2420          * Test if a given localisation cache is out of date with respect to the
2421          * source Messages files. This is done automatically for the global cache
2422          * in $wgMemc, but is only done on certain occasions for the serialized
2423          * data file.
2424          *
2425          * @param $cache mixed Either a language code or a cache array
2426          */
2427         static function isLocalisationOutOfDate( $cache ) {
2428                 if ( !is_array( $cache ) ) {
2429                         self::loadLocalisation( $cache );
2430                         $cache = self::$mLocalisationCache[$cache];
2431                 }
2432                 $expired = false;
2433                 foreach ( $cache['deps'] as $file => $mtime ) {
2434                         if ( !file_exists( $file ) || filemtime( $file ) > $mtime ) {
2435                                 $expired = true;
2436                                 break;
2437                         }
2438                 }
2439                 return $expired;
2440         }
2441
2442         /**
2443          * Get the fallback for a given language
2444          */
2445         static function getFallbackFor( $code ) {
2446                 // Shortcut
2447                 if ( $code === 'en' ) return false;
2448
2449                 // Local cache
2450                 static $cache = array();
2451                 // Quick return
2452                 if ( isset($cache[$code]) ) return $cache[$code];
2453
2454                 // Try memcache
2455                 global $wgMemc;
2456                 $memcKey = wfMemcKey( 'fallback', $code );
2457                 $fbcode = $wgMemc->get( $memcKey );
2458
2459                 if ( is_string($fbcode) ) {
2460                         // False is stored as a string to detect failures in memcache properly
2461                         if ( $fbcode === '' ) $fbcode = false;
2462
2463                         // Update local cache and return
2464                         $cache[$code] = $fbcode;
2465                         return $fbcode;
2466                 }
2467
2468                 // Nothing in caches, load and and update both caches
2469                 self::loadLocalisation( $code );
2470                 $fbcode = self::$mLocalisationCache[$code]['fallback'];
2471
2472                 $cache[$code] = $fbcode;
2473                 $wgMemc->set( $memcKey, (string) $fbcode );
2474
2475                 return $fbcode;
2476         }
2477
2478         /**
2479          * Get all messages for a given language
2480          */
2481         static function getMessagesFor( $code ) {
2482                 self::loadLocalisation( $code );
2483                 return self::$mLocalisationCache[$code]['messages'];
2484         }
2485
2486         /**
2487          * Get a message for a given language
2488          */
2489         static function getMessageFor( $key, $code ) {
2490                 self::loadLocalisation( $code );
2491                 return isset( self::$mLocalisationCache[$code]['messages'][$key] ) ? self::$mLocalisationCache[$code]['messages'][$key] : null;
2492         }
2493
2494         /**
2495          * Load localisation data for this object
2496          */
2497         function load() {
2498                 if ( !$this->mLoaded ) {
2499                         self::loadLocalisation( $this->getCode() );
2500                         $cache =& self::$mLocalisationCache[$this->getCode()];
2501                         foreach ( self::$mLocalisationKeys as $key ) {
2502                                 $this->$key = $cache[$key];
2503                         }
2504                         $this->mLoaded = true;
2505
2506                         $this->fixUpSettings();
2507                 }
2508         }
2509
2510         /**
2511          * Do any necessary post-cache-load settings adjustment
2512          */
2513         function fixUpSettings() {
2514                 global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk,
2515                         $wgNamespaceAliases, $wgAmericanDates;
2516                 wfProfileIn( __METHOD__ );
2517                 if ( $wgExtraNamespaces ) {
2518                         $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames;
2519                 }
2520
2521                 $this->namespaceNames[NS_PROJECT] = $wgMetaNamespace;
2522                 if ( $wgMetaNamespaceTalk ) {
2523                         $this->namespaceNames[NS_PROJECT_TALK] = $wgMetaNamespaceTalk;
2524                 } else {
2525                         $talk = $this->namespaceNames[NS_PROJECT_TALK];
2526                         $talk = str_replace( '$1', $wgMetaNamespace, $talk );
2527
2528                         # Allow grammar transformations
2529                         # Allowing full message-style parsing would make simple requests
2530                         # such as action=raw much more expensive than they need to be.
2531                         # This will hopefully cover most cases.
2532                         $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
2533                                 array( &$this, 'replaceGrammarInNamespace' ), $talk );
2534                         $talk = str_replace( ' ', '_', $talk );
2535                         $this->namespaceNames[NS_PROJECT_TALK] = $talk;
2536                 }
2537
2538                 # The above mixing may leave namespaces out of canonical order.
2539                 # Re-order by namespace ID number...
2540                 ksort( $this->namespaceNames );
2541
2542                 # Put namespace names and aliases into a hashtable.
2543                 # If this is too slow, then we should arrange it so that it is done
2544                 # before caching. The catch is that at pre-cache time, the above
2545                 # class-specific fixup hasn't been done.
2546                 $this->mNamespaceIds = array();
2547                 foreach ( $this->namespaceNames as $index => $name ) {
2548                         $this->mNamespaceIds[$this->lc($name)] = $index;
2549                 }
2550                 if ( $this->namespaceAliases ) {
2551                         foreach ( $this->namespaceAliases as $name => $index ) {
2552                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2553                         }
2554                 }
2555                 if ( $wgNamespaceAliases ) {
2556                         foreach ( $wgNamespaceAliases as $name => $index ) {
2557                                 $this->mNamespaceIds[$this->lc($name)] = $index;
2558                         }
2559                 }
2560
2561                 if ( $this->defaultDateFormat == 'dmy or mdy' ) {
2562                         $this->defaultDateFormat = $wgAmericanDates ? 'mdy' : 'dmy';
2563                 }
2564                 wfProfileOut( __METHOD__ );
2565         }
2566
2567         function replaceGrammarInNamespace( $m ) {
2568                 return $this->convertGrammar( trim( $m[2] ), trim( $m[1] ) );
2569         }
2570
2571         static function getCaseMaps() {
2572                 static $wikiUpperChars, $wikiLowerChars;
2573                 if ( isset( $wikiUpperChars ) ) {
2574                         return array( $wikiUpperChars, $wikiLowerChars );
2575                 }
2576
2577                 wfProfileIn( __METHOD__ );
2578                 $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
2579                 if ( $arr === false ) {
2580                         throw new MWException(
2581                                 "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
2582                 }
2583                 extract( $arr );
2584                 wfProfileOut( __METHOD__ );
2585                 return array( $wikiUpperChars, $wikiLowerChars );
2586         }
2587
2588         function formatTimePeriod( $seconds ) {
2589                 if ( $seconds < 10 ) {
2590                         return $this->formatNum( sprintf( "%.1f", $seconds ) ) . wfMsg( 'seconds-abbrev' );
2591                 } elseif ( $seconds < 60 ) {
2592                         return $this->formatNum( round( $seconds ) ) . wfMsg( 'seconds-abbrev' );
2593                 } elseif ( $seconds < 3600 ) {
2594                         return $this->formatNum( floor( $seconds / 60 ) ) . wfMsg( 'minutes-abbrev' ) .
2595                                 $this->formatNum( round( fmod( $seconds, 60 ) ) ) . wfMsg( 'seconds-abbrev' );
2596                 } else {
2597                         $hours = floor( $seconds / 3600 );
2598                         $minutes = floor( ( $seconds - $hours * 3600 ) / 60 );
2599                         $secondsPart = round( $seconds - $hours * 3600 - $minutes * 60 );
2600                         return $this->formatNum( $hours ) . wfMsg( 'hours-abbrev' ) .
2601                                 $this->formatNum( $minutes ) . wfMsg( 'minutes-abbrev' ) .
2602                                 $this->formatNum( $secondsPart ) . wfMsg( 'seconds-abbrev' );
2603                 }
2604         }
2605
2606         function formatBitrate( $bps ) {
2607                 $units = array( 'bps', 'kbps', 'Mbps', 'Gbps' );
2608                 if ( $bps <= 0 ) {
2609                         return $this->formatNum( $bps ) . $units[0];
2610                 }
2611                 $unitIndex = floor( log10( $bps ) / 3 );
2612                 $mantissa = $bps / pow( 1000, $unitIndex );
2613                 if ( $mantissa < 10 ) {
2614                         $mantissa = round( $mantissa, 1 );
2615                 } else {
2616                         $mantissa = round( $mantissa );
2617                 }
2618                 return $this->formatNum( $mantissa ) . $units[$unitIndex];
2619         }
2620
2621         /**
2622          * Format a size in bytes for output, using an appropriate
2623          * unit (B, KB, MB or GB) according to the magnitude in question
2624          *
2625          * @param $size Size to format
2626          * @return string Plain text (not HTML)
2627          */
2628         function formatSize( $size ) {
2629                 // For small sizes no decimal places necessary
2630                 $round = 0;
2631                 if( $size > 1024 ) {
2632                         $size = $size / 1024;
2633                         if( $size > 1024 ) {
2634                                 $size = $size / 1024;
2635                                 // For MB and bigger two decimal places are smarter
2636                                 $round = 2;
2637                                 if( $size > 1024 ) {
2638                                         $size = $size / 1024;
2639                                         $msg = 'size-gigabytes';
2640                                 } else {
2641                                         $msg = 'size-megabytes';
2642                                 }
2643                         } else {
2644                                 $msg = 'size-kilobytes';
2645                         }
2646                 } else {
2647                         $msg = 'size-bytes';
2648                 }
2649                 $size = round( $size, $round );
2650                 $text = $this->getMessageFromDB( $msg );
2651                 return str_replace( '$1', $this->formatNum( $size ), $text );
2652         }
2653 }