Language.php

Go to the documentation of this file.

<?php
if ( !defined( 'MEDIAWIKI' ) ) {
        echo "This file is part of MediaWiki, it is not a valid entry point.\n";
        exit( 1 );
}

# Read language names
global $wgLanguageNames;
require_once( dirname( __FILE__ ) . '/Names.php' );

if ( function_exists( 'mb_strtoupper' ) ) {
        mb_internal_encoding( 'UTF-8' );
}

class FakeConverter {
        var $mLang;
        function __construct( $langobj ) { $this->mLang = $langobj; }
        function autoConvertToAllVariants( $text ) { return array( $this->mLang->getCode() => $text ); }
        function convert( $t ) { return $t; }
        function convertTo( $text, $variant ) { return $text; }
        function convertTitle( $t ) { return $t->getPrefixedText(); }
        function getVariants() { return array( $this->mLang->getCode() ); }
        function getPreferredVariant() { return $this->mLang->getCode(); }
        function getDefaultVariant() { return $this->mLang->getCode(); }
        function getURLVariant() { return ''; }
        function getConvRuleTitle() { return false; }
        function findVariantLink( &$l, &$n, $ignoreOtherCond = false ) { }
        function getExtraHashOptions() { return ''; }
        function getParsedTitle() { return ''; }
        function markNoConversion( $text, $noParse = false ) { return $text; }
        function convertCategoryKey( $key ) { return $key; }
        function convertLinkToAllVariants( $text ) { return $this->autoConvertToAllVariants( $text ); }
        function armourMath( $text ) { return $text; }
}

class Language {

        var $mConverter;

        var $mVariants, $mCode, $mLoaded = false;
        var $mMagicExtensions = array(), $mMagicHookDone = false;
        private $mHtmlCode = null;

        var $dateFormatStrings = array();
        var $mExtendedSpecialPageAliases;

        protected $namespaceNames, $mNamespaceIds, $namespaceAliases;

        var $transformData = array();

        static public $dataCache;

        static public $mLangObjCache = array();

        static public $mWeekdayMsgs = array(
                'sunday', 'monday', 'tuesday', 'wednesday', 'thursday',
                'friday', 'saturday'
        );

        static public $mWeekdayAbbrevMsgs = array(
                'sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'
        );

        static public $mMonthMsgs = array(
                'january', 'february', 'march', 'april', 'may_long', 'june',
                'july', 'august', 'september', 'october', 'november',
                'december'
        );
        static public $mMonthGenMsgs = array(
                'january-gen', 'february-gen', 'march-gen', 'april-gen', 'may-gen', 'june-gen',
                'july-gen', 'august-gen', 'september-gen', 'october-gen', 'november-gen',
                'december-gen'
        );
        static public $mMonthAbbrevMsgs = array(
                'jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug',
                'sep', 'oct', 'nov', 'dec'
        );

        static public $mIranianCalendarMonthMsgs = array(
                'iranian-calendar-m1', 'iranian-calendar-m2', 'iranian-calendar-m3',
                'iranian-calendar-m4', 'iranian-calendar-m5', 'iranian-calendar-m6',
                'iranian-calendar-m7', 'iranian-calendar-m8', 'iranian-calendar-m9',
                'iranian-calendar-m10', 'iranian-calendar-m11', 'iranian-calendar-m12'
        );

        static public $mHebrewCalendarMonthMsgs = array(
                'hebrew-calendar-m1', 'hebrew-calendar-m2', 'hebrew-calendar-m3',
                'hebrew-calendar-m4', 'hebrew-calendar-m5', 'hebrew-calendar-m6',
                'hebrew-calendar-m7', 'hebrew-calendar-m8', 'hebrew-calendar-m9',
                'hebrew-calendar-m10', 'hebrew-calendar-m11', 'hebrew-calendar-m12',
                'hebrew-calendar-m6a', 'hebrew-calendar-m6b'
        );

        static public $mHebrewCalendarMonthGenMsgs = array(
                'hebrew-calendar-m1-gen', 'hebrew-calendar-m2-gen', 'hebrew-calendar-m3-gen',
                'hebrew-calendar-m4-gen', 'hebrew-calendar-m5-gen', 'hebrew-calendar-m6-gen',
                'hebrew-calendar-m7-gen', 'hebrew-calendar-m8-gen', 'hebrew-calendar-m9-gen',
                'hebrew-calendar-m10-gen', 'hebrew-calendar-m11-gen', 'hebrew-calendar-m12-gen',
                'hebrew-calendar-m6a-gen', 'hebrew-calendar-m6b-gen'
        );

        static public $mHijriCalendarMonthMsgs = array(
                'hijri-calendar-m1', 'hijri-calendar-m2', 'hijri-calendar-m3',
                'hijri-calendar-m4', 'hijri-calendar-m5', 'hijri-calendar-m6',
                'hijri-calendar-m7', 'hijri-calendar-m8', 'hijri-calendar-m9',
                'hijri-calendar-m10', 'hijri-calendar-m11', 'hijri-calendar-m12'
        );

        static function factory( $code ) {
                if ( !isset( self::$mLangObjCache[$code] ) ) {
                        if ( count( self::$mLangObjCache ) > 10 ) {
                                // Don't keep a billion objects around, that's stupid.
                                self::$mLangObjCache = array();
                        }
                        self::$mLangObjCache[$code] = self::newFromCode( $code );
                }
                return self::$mLangObjCache[$code];
        }

        protected static function newFromCode( $code ) {
                // Protect against path traversal below
                if ( !Language::isValidCode( $code )
                        || strcspn( $code, ":/\\\000" ) !== strlen( $code ) )
                {
                        throw new MWException( "Invalid language code \"$code\"" );
                }

                if ( !Language::isValidBuiltInCode( $code ) ) {
                        // It's not possible to customise this code with class files, so
                        // just return a Language object. This is to support uselang= hacks.
                        $lang = new Language;
                        $lang->setCode( $code );
                        return $lang;
                }

                // Check if there is a language class for the code
                $class = self::classFromCode( $code );
                self::preloadLanguageClass( $class );
                if ( MWInit::classExists( $class ) ) {
                        $lang = new $class;
                        return $lang;
                }

                // Keep trying the fallback list until we find an existing class
                $fallbacks = Language::getFallbacksFor( $code );
                foreach ( $fallbacks as $fallbackCode ) {
                        if ( !Language::isValidBuiltInCode( $fallbackCode ) ) {
                                throw new MWException( "Invalid fallback '$fallbackCode' in fallback sequence for '$code'" );
                        }

                        $class = self::classFromCode( $fallbackCode );
                        self::preloadLanguageClass( $class );
                        if ( MWInit::classExists( $class ) ) {
                                $lang = Language::newFromCode( $fallbackCode );
                                $lang->setCode( $code );
                                return $lang;
                        }
                }

                throw new MWException( "Invalid fallback sequence for language '$code'" );
        }

        public static function isValidCode( $code ) {
                return
                        // People think language codes are html safe, so enforce it.
                        // Ideally we should only allow a-zA-Z0-9-
                        // but, .+ and other chars are often used for {{int:}} hacks
                        // see bugs 37564, 37587, 36938
                        strcspn( $code, ":/\\\000&<>'\"" ) === strlen( $code )
                        && !preg_match( Title::getTitleInvalidRegex(), $code );
        }

        public static function isValidBuiltInCode( $code ) {
                return preg_match( '/^[a-z0-9-]+$/i', $code );
        }

        public static function classFromCode( $code ) {
                if ( $code == 'en' ) {
                        return 'Language';
                } else {
                        return 'Language' . str_replace( '-', '_', ucfirst( $code ) );
                }
        }

        public static function preloadLanguageClass( $class ) {
                global $IP;

                if ( $class === 'Language' ) {
                        return;
                }

                if ( !defined( 'MW_COMPILED' ) ) {
                        // Preload base classes to work around APC/PHP5 bug
                        if ( file_exists( "$IP/languages/classes/$class.deps.php" ) ) {
                                include_once( "$IP/languages/classes/$class.deps.php" );
                        }
                        if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
                                include_once( "$IP/languages/classes/$class.php" );
                        }
                }
        }

        public static function getLocalisationCache() {
                if ( is_null( self::$dataCache ) ) {
                        global $wgLocalisationCacheConf;
                        $class = $wgLocalisationCacheConf['class'];
                        self::$dataCache = new $class( $wgLocalisationCacheConf );
                }
                return self::$dataCache;
        }

        function __construct() {
                $this->mConverter = new FakeConverter( $this );
                // Set the code to the name of the descendant
                if ( get_class( $this ) == 'Language' ) {
                        $this->mCode = 'en';
                } else {
                        $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
                }
                self::getLocalisationCache();
        }

        function __destruct() {
                foreach ( $this as $name => $value ) {
                        unset( $this->$name );
                }
        }

        function initContLang() { }

        function getFallbackLanguageCode() {
                wfDeprecated( __METHOD__ );
                return self::getFallbackFor( $this->mCode );
        }

        function getFallbackLanguages() {
                return self::getFallbacksFor( $this->mCode );
        }

        function getBookstoreList() {
                return self::$dataCache->getItem( $this->mCode, 'bookstoreList' );
        }

        public function getNamespaces() {
                if ( is_null( $this->namespaceNames ) ) {
                        global $wgMetaNamespace, $wgMetaNamespaceTalk, $wgExtraNamespaces;

                        $this->namespaceNames = self::$dataCache->getItem( $this->mCode, 'namespaceNames' );
                        $validNamespaces = MWNamespace::getCanonicalNamespaces();

                        $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames + $validNamespaces;

                        $this->namespaceNames[NS_PROJECT] = $wgMetaNamespace;
                        if ( $wgMetaNamespaceTalk ) {
                                $this->namespaceNames[NS_PROJECT_TALK] = $wgMetaNamespaceTalk;
                        } else {
                                $talk = $this->namespaceNames[NS_PROJECT_TALK];
                                $this->namespaceNames[NS_PROJECT_TALK] =
                                        $this->fixVariableInNamespace( $talk );
                        }

                        # Sometimes a language will be localised but not actually exist on this wiki.
                        foreach ( $this->namespaceNames as $key => $text ) {
                                if ( !isset( $validNamespaces[$key] ) ) {
                                        unset( $this->namespaceNames[$key] );
                                }
                        }

                        # The above mixing may leave namespaces out of canonical order.
                        # Re-order by namespace ID number...
                        ksort( $this->namespaceNames );

                        wfRunHooks( 'LanguageGetNamespaces', array( &$this->namespaceNames ) );
                }
                return $this->namespaceNames;
        }

        public function setNamespaces( array $namespaces ) {
                $this->namespaceNames = $namespaces;
        }

        function getFormattedNamespaces() {
                $ns = $this->getNamespaces();
                foreach ( $ns as $k => $v ) {
                        $ns[$k] = strtr( $v, '_', ' ' );
                }
                return $ns;
        }

        function getNsText( $index ) {
                $ns = $this->getNamespaces();
                return isset( $ns[$index] ) ? $ns[$index] : false;
        }

        function getFormattedNsText( $index ) {
                $ns = $this->getNsText( $index );
                return strtr( $ns, '_', ' ' );
        }

        function getGenderNsText( $index, $gender ) {
                global $wgExtraGenderNamespaces;

                $ns = $wgExtraGenderNamespaces + self::$dataCache->getItem( $this->mCode, 'namespaceGenderAliases' );
                return isset( $ns[$index][$gender] ) ? $ns[$index][$gender] : $this->getNsText( $index );
        }

        function needsGenderDistinction() {
                global $wgExtraGenderNamespaces, $wgExtraNamespaces;
                if ( count( $wgExtraGenderNamespaces ) > 0 ) {
                        // $wgExtraGenderNamespaces overrides everything
                        return true;
                } elseif ( isset( $wgExtraNamespaces[NS_USER] ) && isset( $wgExtraNamespaces[NS_USER_TALK] ) ) {
                        // $wgExtraNamespaces overrides any gender aliases specified in i18n files
                        return false;
                } else {
                        // Check what is in i18n files
                        $aliases = self::$dataCache->getItem( $this->mCode, 'namespaceGenderAliases' );
                        return count( $aliases ) > 0;
                }
        }

        function getLocalNsIndex( $text ) {
                $lctext = $this->lc( $text );
                $ids = $this->getNamespaceIds();
                return isset( $ids[$lctext] ) ? $ids[$lctext] : false;
        }

        function getNamespaceAliases() {
                if ( is_null( $this->namespaceAliases ) ) {
                        $aliases = self::$dataCache->getItem( $this->mCode, 'namespaceAliases' );
                        if ( !$aliases ) {
                                $aliases = array();
                        } else {
                                foreach ( $aliases as $name => $index ) {
                                        if ( $index === NS_PROJECT_TALK ) {
                                                unset( $aliases[$name] );
                                                $name = $this->fixVariableInNamespace( $name );
                                                $aliases[$name] = $index;
                                        }
                                }
                        }

                        global $wgExtraGenderNamespaces;
                        $genders = $wgExtraGenderNamespaces + (array)self::$dataCache->getItem( $this->mCode, 'namespaceGenderAliases' );
                        foreach ( $genders as $index => $forms ) {
                                foreach ( $forms as $alias ) {
                                        $aliases[$alias] = $index;
                                }
                        }

                        $this->namespaceAliases = $aliases;
                }
                return $this->namespaceAliases;
        }

        function getNamespaceIds() {
                if ( is_null( $this->mNamespaceIds ) ) {
                        global $wgNamespaceAliases;
                        # Put namespace names and aliases into a hashtable.
                        # If this is too slow, then we should arrange it so that it is done
                        # before caching. The catch is that at pre-cache time, the above
                        # class-specific fixup hasn't been done.
                        $this->mNamespaceIds = array();
                        foreach ( $this->getNamespaces() as $index => $name ) {
                                $this->mNamespaceIds[$this->lc( $name )] = $index;
                        }
                        foreach ( $this->getNamespaceAliases() as $name => $index ) {
                                $this->mNamespaceIds[$this->lc( $name )] = $index;
                        }
                        if ( $wgNamespaceAliases ) {
                                foreach ( $wgNamespaceAliases as $name => $index ) {
                                        $this->mNamespaceIds[$this->lc( $name )] = $index;
                                }
                        }
                }
                return $this->mNamespaceIds;
        }

        function getNsIndex( $text ) {
                $lctext = $this->lc( $text );
                $ns = MWNamespace::getCanonicalIndex( $lctext );
                if ( $ns !== null ) {
                        return $ns;
                }
                $ids = $this->getNamespaceIds();
                return isset( $ids[$lctext] ) ? $ids[$lctext] : false;
        }

        function getVariantname( $code, $usemsg = true ) {
                $msg = "variantname-$code";
                list( $rootCode ) = explode( '-', $code );
                if ( $usemsg && wfMessage( $msg )->exists() ) {
                        return $this->getMessageFromDB( $msg );
                }
                $name = self::getLanguageName( $code );
                if ( $name ) {
                        return $name; # if it's defined as a language name, show that
                } else {
                        # otherwise, output the language code
                        return $code;
                }
        }

        function specialPage( $name ) {
                $aliases = $this->getSpecialPageAliases();
                if ( isset( $aliases[$name][0] ) ) {
                        $name = $aliases[$name][0];
                }
                return $this->getNsText( NS_SPECIAL ) . ':' . $name;
        }

        function getQuickbarSettings() {
                return array(
                        $this->getMessage( 'qbsettings-none' ),
                        $this->getMessage( 'qbsettings-fixedleft' ),
                        $this->getMessage( 'qbsettings-fixedright' ),
                        $this->getMessage( 'qbsettings-floatingleft' ),
                        $this->getMessage( 'qbsettings-floatingright' ),
                        $this->getMessage( 'qbsettings-directionality' )
                );
        }

        function getDatePreferences() {
                return self::$dataCache->getItem( $this->mCode, 'datePreferences' );
        }

        function getDateFormats() {
                return self::$dataCache->getItem( $this->mCode, 'dateFormats' );
        }

        function getDefaultDateFormat() {
                $df = self::$dataCache->getItem( $this->mCode, 'defaultDateFormat' );
                if ( $df === 'dmy or mdy' ) {
                        global $wgAmericanDates;
                        return $wgAmericanDates ? 'mdy' : 'dmy';
                } else {
                        return $df;
                }
        }

        function getDatePreferenceMigrationMap() {
                return self::$dataCache->getItem( $this->mCode, 'datePreferenceMigrationMap' );
        }

        function getImageFile( $image ) {
                return self::$dataCache->getSubitem( $this->mCode, 'imageFiles', $image );
        }

        function getExtraUserToggles() {
                return (array)self::$dataCache->getItem( $this->mCode, 'extraUserToggles' );
        }

        function getUserToggle( $tog ) {
                return $this->getMessageFromDB( "tog-$tog" );
        }

        public static function getLanguageNames( $customisedOnly = false ) {
                global $wgExtraLanguageNames;
                static $coreLanguageNames;

                if ( $coreLanguageNames === null ) {
                        include( MWInit::compiledPath( 'languages/Names.php' ) );
                }

                $allNames = $wgExtraLanguageNames + $coreLanguageNames;
                if ( !$customisedOnly ) {
                        return $allNames;
                }

                $names = array();
                // We do this using a foreach over the codes instead of a directory
                // loop so that messages files in extensions will work correctly.
                foreach ( $allNames as $code => $value ) {
                        if ( is_readable( self::getMessagesFileName( $code ) ) ) {
                                $names[$code] = $allNames[$code];
                        }
                }
                return $names;
        }

        public static function getTranslatedLanguageNames( $code ) {
                $names = array();
                wfRunHooks( 'LanguageGetTranslatedLanguageNames', array( &$names, $code ) );

                foreach ( self::getLanguageNames() as $code => $name ) {
                        if ( !isset( $names[$code] ) ) $names[$code] = $name;
                }

                return $names;
        }

        function getMessageFromDB( $msg ) {
                return wfMsgExt( $msg, array( 'parsemag', 'language' => $this ) );
        }

        function getLanguageName( $code ) {
                $names = self::getLanguageNames();
                if ( !array_key_exists( $code, $names ) ) {
                        return '';
                }
                return $names[$code];
        }

        function getMonthName( $key ) {
                return $this->getMessageFromDB( self::$mMonthMsgs[$key - 1] );
        }

        function getMonthNamesArray() {
                $monthNames = array( '' );
                for ( $i = 1; $i < 13; $i++ ) {
                        $monthNames[] = $this->getMonthName( $i );
                }
                return $monthNames;
        }

        function getMonthNameGen( $key ) {
                return $this->getMessageFromDB( self::$mMonthGenMsgs[$key - 1] );
        }

        function getMonthAbbreviation( $key ) {
                return $this->getMessageFromDB( self::$mMonthAbbrevMsgs[$key - 1] );
        }

        function getMonthAbbreviationsArray() {
                $monthNames = array( '' );
                for ( $i = 1; $i < 13; $i++ ) {
                        $monthNames[] = $this->getMonthAbbreviation( $i );
                }
                return $monthNames;
        }

        function getWeekdayName( $key ) {
                return $this->getMessageFromDB( self::$mWeekdayMsgs[$key - 1] );
        }

        function getWeekdayAbbreviation( $key ) {
                return $this->getMessageFromDB( self::$mWeekdayAbbrevMsgs[$key - 1] );
        }

        function getIranianCalendarMonthName( $key ) {
                return $this->getMessageFromDB( self::$mIranianCalendarMonthMsgs[$key - 1] );
        }

        function getHebrewCalendarMonthName( $key ) {
                return $this->getMessageFromDB( self::$mHebrewCalendarMonthMsgs[$key - 1] );
        }

        function getHebrewCalendarMonthNameGen( $key ) {
                return $this->getMessageFromDB( self::$mHebrewCalendarMonthGenMsgs[$key - 1] );
        }

        function getHijriCalendarMonthName( $key ) {
                return $this->getMessageFromDB( self::$mHijriCalendarMonthMsgs[$key - 1] );
        }

        function sprintfDate( $format, $ts ) {
                $s = '';
                $raw = false;
                $roman = false;
                $hebrewNum = false;
                $unix = false;
                $rawToggle = false;
                $iranian = false;
                $hebrew = false;
                $hijri = false;
                $thai = false;
                $minguo = false;
                $tenno = false;
                for ( $p = 0; $p < strlen( $format ); $p++ ) {
                        $num = false;
                        $code = $format[$p];
                        if ( $code == 'x' && $p < strlen( $format ) - 1 ) {
                                $code .= $format[++$p];
                        }

                        if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' || $code == 'xo' || $code == 'xt' ) && $p < strlen( $format ) - 1 ) {
                                $code .= $format[++$p];
                        }

                        switch ( $code ) {
                                case 'xx':
                                        $s .= 'x';
                                        break;
                                case 'xn':
                                        $raw = true;
                                        break;
                                case 'xN':
                                        $rawToggle = !$rawToggle;
                                        break;
                                case 'xr':
                                        $roman = true;
                                        break;
                                case 'xh':
                                        $hebrewNum = true;
                                        break;
                                case 'xg':
                                        $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
                                        break;
                                case 'xjx':
                                        if ( !$hebrew ) $hebrew = self::tsToHebrew( $ts );
                                        $s .= $this->getHebrewCalendarMonthNameGen( $hebrew[1] );
                                        break;
                                case 'd':
                                        $num = substr( $ts, 6, 2 );
                                        break;
                                case 'D':
                                        if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                        $s .= $this->getWeekdayAbbreviation( gmdate( 'w', $unix ) + 1 );
                                        break;
                                case 'j':
                                        $num = intval( substr( $ts, 6, 2 ) );
                                        break;
                                case 'xij':
                                        if ( !$iranian ) {
                                                $iranian = self::tsToIranian( $ts );
                                        }
                                        $num = $iranian[2];
                                        break;
                                case 'xmj':
                                        if ( !$hijri ) {
                                                $hijri = self::tsToHijri( $ts );
                                        }
                                        $num = $hijri[2];
                                        break;
                                case 'xjj':
                                        if ( !$hebrew ) {
                                                $hebrew = self::tsToHebrew( $ts );
                                        }
                                        $num = $hebrew[2];
                                        break;
                                case 'l':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $s .= $this->getWeekdayName( gmdate( 'w', $unix ) + 1 );
                                        break;
                                case 'N':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $w = gmdate( 'w', $unix );
                                        $num = $w ? $w : 7;
                                        break;
                                case 'w':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 'w', $unix );
                                        break;
                                case 'z':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 'z', $unix );
                                        break;
                                case 'W':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 'W', $unix );
                                        break;
                                case 'F':
                                        $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
                                        break;
                                case 'xiF':
                                        if ( !$iranian ) {
                                                $iranian = self::tsToIranian( $ts );
                                        }
                                        $s .= $this->getIranianCalendarMonthName( $iranian[1] );
                                        break;
                                case 'xmF':
                                        if ( !$hijri ) {
                                                $hijri = self::tsToHijri( $ts );
                                        }
                                        $s .= $this->getHijriCalendarMonthName( $hijri[1] );
                                        break;
                                case 'xjF':
                                        if ( !$hebrew ) {
                                                $hebrew = self::tsToHebrew( $ts );
                                        }
                                        $s .= $this->getHebrewCalendarMonthName( $hebrew[1] );
                                        break;
                                case 'm':
                                        $num = substr( $ts, 4, 2 );
                                        break;
                                case 'M':
                                        $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
                                        break;
                                case 'n':
                                        $num = intval( substr( $ts, 4, 2 ) );
                                        break;
                                case 'xin':
                                        if ( !$iranian ) {
                                                $iranian = self::tsToIranian( $ts );
                                        }
                                        $num = $iranian[1];
                                        break;
                                case 'xmn':
                                        if ( !$hijri ) {
                                                $hijri = self::tsToHijri ( $ts );
                                        }
                                        $num = $hijri[1];
                                        break;
                                case 'xjn':
                                        if ( !$hebrew ) {
                                                $hebrew = self::tsToHebrew( $ts );
                                        }
                                        $num = $hebrew[1];
                                        break;
                                case 't':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 't', $unix );
                                        break;
                                case 'xjt':
                                        if ( !$hebrew ) {
                                                $hebrew = self::tsToHebrew( $ts );
                                        }
                                        $num = $hebrew[3];
                                        break;
                                case 'L':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 'L', $unix );
                                        break;
                                case 'o':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = gmdate( 'o', $unix );
                                        break;
                                case 'Y':
                                        $num = substr( $ts, 0, 4 );
                                        break;
                                case 'xiY':
                                        if ( !$iranian ) {
                                                $iranian = self::tsToIranian( $ts );
                                        }
                                        $num = $iranian[0];
                                        break;
                                case 'xmY':
                                        if ( !$hijri ) {
                                                $hijri = self::tsToHijri( $ts );
                                        }
                                        $num = $hijri[0];
                                        break;
                                case 'xjY':
                                        if ( !$hebrew ) {
                                                $hebrew = self::tsToHebrew( $ts );
                                        }
                                        $num = $hebrew[0];
                                        break;
                                case 'xkY':
                                        if ( !$thai ) {
                                                $thai = self::tsToYear( $ts, 'thai' );
                                        }
                                        $num = $thai[0];
                                        break;
                                case 'xoY':
                                        if ( !$minguo ) {
                                                $minguo = self::tsToYear( $ts, 'minguo' );
                                        }
                                        $num = $minguo[0];
                                        break;
                                case 'xtY':
                                        if ( !$tenno ) {
                                                $tenno = self::tsToYear( $ts, 'tenno' );
                                        }
                                        $num = $tenno[0];
                                        break;
                                case 'y':
                                        $num = substr( $ts, 2, 2 );
                                        break;
                                case 'xiy':
                                        if ( !$iranian ) {
                                                $iranian = self::tsToIranian( $ts );
                                        }
                                        $num = substr( $iranian[0], -2 );
                                        break;
                                case 'a':
                                        $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'am' : 'pm';
                                        break;
                                case 'A':
                                        $s .= intval( substr( $ts, 8, 2 ) ) < 12 ? 'AM' : 'PM';
                                        break;
                                case 'g':
                                        $h = substr( $ts, 8, 2 );
                                        $num = $h % 12 ? $h % 12 : 12;
                                        break;
                                case 'G':
                                        $num = intval( substr( $ts, 8, 2 ) );
                                        break;
                                case 'h':
                                        $h = substr( $ts, 8, 2 );
                                        $num = sprintf( '%02d', $h % 12 ? $h % 12 : 12 );
                                        break;
                                case 'H':
                                        $num = substr( $ts, 8, 2 );
                                        break;
                                case 'i':
                                        $num = substr( $ts, 10, 2 );
                                        break;
                                case 's':
                                        $num = substr( $ts, 12, 2 );
                                        break;
                                case 'c':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $s .= gmdate( 'c', $unix );
                                        break;
                                case 'r':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $s .= gmdate( 'r', $unix );
                                        break;
                                case 'U':
                                        if ( !$unix ) {
                                                $unix = wfTimestamp( TS_UNIX, $ts );
                                        }
                                        $num = $unix;
                                        break;
                                case '\\':
                                        # Backslash escaping
                                        if ( $p < strlen( $format ) - 1 ) {
                                                $s .= $format[++$p];
                                        } else {
                                                $s .= '\\';
                                        }
                                        break;
                                case '"':
                                        # Quoted literal
                                        if ( $p < strlen( $format ) - 1 ) {
                                                $endQuote = strpos( $format, '"', $p + 1 );
                                                if ( $endQuote === false ) {
                                                        # No terminating quote, assume literal "
                                                        $s .= '"';
                                                } else {
                                                        $s .= substr( $format, $p + 1, $endQuote - $p - 1 );
                                                        $p = $endQuote;
                                                }
                                        } else {
                                                # Quote at end of string, assume literal "
                                                $s .= '"';
                                        }
                                        break;
                                default:
                                        $s .= $format[$p];
                        }
                        if ( $num !== false ) {
                                if ( $rawToggle || $raw ) {
                                        $s .= $num;
                                        $raw = false;
                                } elseif ( $roman ) {
                                        $s .= self::romanNumeral( $num );
                                        $roman = false;
                                } elseif ( $hebrewNum ) {
                                        $s .= self::hebrewNumeral( $num );
                                        $hebrewNum = false;
                                } else {
                                        $s .= $this->formatNum( $num, true );
                                }
                        }
                }
                return $s;
        }

        private static $GREG_DAYS = array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
        private static $IRANIAN_DAYS = array( 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29 );

        private static function tsToIranian( $ts ) {
                $gy = substr( $ts, 0, 4 ) -1600;
                $gm = substr( $ts, 4, 2 ) -1;
                $gd = substr( $ts, 6, 2 ) -1;

                # Days passed from the beginning (including leap years)
                $gDayNo = 365 * $gy
                        + floor( ( $gy + 3 ) / 4 )
                        - floor( ( $gy + 99 ) / 100 )
                        + floor( ( $gy + 399 ) / 400 );

                // Add days of the past months of this year
                for ( $i = 0; $i < $gm; $i++ ) {
                        $gDayNo += self::$GREG_DAYS[$i];
                }

                // Leap years
                if ( $gm > 1 && ( ( $gy % 4 === 0 && $gy % 100 !== 0 || ( $gy % 400 == 0 ) ) ) ) {
                        $gDayNo++;
                }

                // Days passed in current month
                $gDayNo += (int)$gd;

                $jDayNo = $gDayNo - 79;

                $jNp = floor( $jDayNo / 12053 );
                $jDayNo %= 12053;

                $jy = 979 + 33 * $jNp + 4 * floor( $jDayNo / 1461 );
                $jDayNo %= 1461;

                if ( $jDayNo >= 366 ) {
                        $jy += floor( ( $jDayNo - 1 ) / 365 );
                        $jDayNo = floor( ( $jDayNo - 1 ) % 365 );
                }

                for ( $i = 0; $i < 11 && $jDayNo >= self::$IRANIAN_DAYS[$i]; $i++ ) {
                        $jDayNo -= self::$IRANIAN_DAYS[$i];
                }

                $jm = $i + 1;
                $jd = $jDayNo + 1;

                return array( $jy, $jm, $jd );
        }

        private static function tsToHijri( $ts ) {
                $year = substr( $ts, 0, 4 );
                $month = substr( $ts, 4, 2 );
                $day = substr( $ts, 6, 2 );

                $zyr = $year;
                $zd = $day;
                $zm = $month;
                $zy = $zyr;

                if (
                        ( $zy > 1582 ) || ( ( $zy == 1582 ) && ( $zm > 10 ) ) ||
                        ( ( $zy == 1582 ) && ( $zm == 10 ) && ( $zd > 14 ) )
                )
                {
                        $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;
                } else {
                        $zjd = 367 * $zy - (int)( ( 7 * ( $zy + 5001 + (int)( ( $zm - 9 ) / 7 ) ) ) / 4 ) +
                                                                (int)( ( 275 * $zm ) / 9 ) + $zd + 1729777;
                }

                $zl = $zjd -1948440 + 10632;
                $zn = (int)( ( $zl - 1 ) / 10631 );
                $zl = $zl - 10631 * $zn + 354;
                $zj = ( (int)( ( 10985 - $zl ) / 5316 ) ) * ( (int)( ( 50 * $zl ) / 17719 ) ) + ( (int)( $zl / 5670 ) ) * ( (int)( ( 43 * $zl ) / 15238 ) );
                $zl = $zl - ( (int)( ( 30 - $zj ) / 15 ) ) * ( (int)( ( 17719 * $zj ) / 50 ) ) - ( (int)( $zj / 16 ) ) * ( (int)( ( 15238 * $zj ) / 43 ) ) + 29;
                $zm = (int)( ( 24 * $zl ) / 709 );
                $zd = $zl - (int)( ( 709 * $zm ) / 24 );
                $zy = 30 * $zn + $zj - 30;

                return array( $zy, $zm, $zd );
        }

        private static function tsToHebrew( $ts ) {
                # Parse date
                $year = substr( $ts, 0, 4 );
                $month = substr( $ts, 4, 2 );
                $day = substr( $ts, 6, 2 );

                # Calculate Hebrew year
                $hebrewYear = $year + 3760;

                # Month number when September = 1, August = 12
                $month += 4;
                if ( $month > 12 ) {
                        # Next year
                        $month -= 12;
                        $year++;
                        $hebrewYear++;
                }

                # Calculate day of year from 1 September
                $dayOfYear = $day;
                for ( $i = 1; $i < $month; $i++ ) {
                        if ( $i == 6 ) {
                                # February
                                $dayOfYear += 28;
                                # Check if the year is leap
                                if ( $year % 400 == 0 || ( $year % 4 == 0 && $year % 100 > 0 ) ) {
                                        $dayOfYear++;
                                }
                        } elseif ( $i == 8 || $i == 10 || $i == 1 || $i == 3 ) {
                                $dayOfYear += 30;
                        } else {
                                $dayOfYear += 31;
                        }
                }

                # Calculate the start of the Hebrew year
                $start = self::hebrewYearStart( $hebrewYear );

                # Calculate next year's start
                if ( $dayOfYear <= $start ) {
                        # Day is before the start of the year - it is the previous year
                        # Next year's start
                        $nextStart = $start;
                        # Previous year
                        $year--;
                        $hebrewYear--;
                        # Add days since previous year's 1 September
                        $dayOfYear += 365;
                        if ( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
                                # Leap year
                                $dayOfYear++;
                        }
                        # Start of the new (previous) year
                        $start = self::hebrewYearStart( $hebrewYear );
                } else {
                        # Next year's start
                        $nextStart = self::hebrewYearStart( $hebrewYear + 1 );
                }

                # Calculate Hebrew day of year
                $hebrewDayOfYear = $dayOfYear - $start;

                # Difference between year's days
                $diff = $nextStart - $start;
                # Add 12 (or 13 for leap years) days to ignore the difference between
                # Hebrew and Gregorian year (353 at least vs. 365/6) - now the
                # difference is only about the year type
                if ( ( $year % 400 == 0 ) || ( $year % 100 != 0 && $year % 4 == 0 ) ) {
                        $diff += 13;
                } else {
                        $diff += 12;
                }

                # Check the year pattern, and is leap year
                # 0 means an incomplete year, 1 means a regular year, 2 means a complete year
                # This is mod 30, to work on both leap years (which add 30 days of Adar I)
                # and non-leap years
                $yearPattern = $diff % 30;
                # Check if leap year
                $isLeap = $diff >= 30;

                # Calculate day in the month from number of day in the Hebrew year
                # Don't check Adar - if the day is not in Adar, we will stop before;
                # if it is in Adar, we will use it to check if it is Adar I or Adar II
                $hebrewDay = $hebrewDayOfYear;
                $hebrewMonth = 1;
                $days = 0;
                while ( $hebrewMonth <= 12 ) {
                        # Calculate days in this month
                        if ( $isLeap && $hebrewMonth == 6 ) {
                                # Adar in a leap year
                                if ( $isLeap ) {
                                        # Leap year - has Adar I, with 30 days, and Adar II, with 29 days
                                        $days = 30;
                                        if ( $hebrewDay <= $days ) {
                                                # Day in Adar I
                                                $hebrewMonth = 13;
                                        } else {
                                                # Subtract the days of Adar I
                                                $hebrewDay -= $days;
                                                # Try Adar II
                                                $days = 29;
                                                if ( $hebrewDay <= $days ) {
                                                        # Day in Adar II
                                                        $hebrewMonth = 14;
                                                }
                                        }
                                }
                        } elseif ( $hebrewMonth == 2 && $yearPattern == 2 ) {
                                # Cheshvan in a complete year (otherwise as the rule below)
                                $days = 30;
                        } elseif ( $hebrewMonth == 3 && $yearPattern == 0 ) {
                                # Kislev in an incomplete year (otherwise as the rule below)
                                $days = 29;
                        } else {
                                # Odd months have 30 days, even have 29
                                $days = 30 - ( $hebrewMonth - 1 ) % 2;
                        }
                        if ( $hebrewDay <= $days ) {
                                # In the current month
                                break;
                        } else {
                                # Subtract the days of the current month
                                $hebrewDay -= $days;
                                # Try in the next month
                                $hebrewMonth++;
                        }
                }

                return array( $hebrewYear, $hebrewMonth, $hebrewDay, $days );
        }

        private static function hebrewYearStart( $year ) {
                $a = intval( ( 12 * ( $year - 1 ) + 17 ) % 19 );
                $b = intval( ( $year - 1 ) % 4 );
                $m = 32.044093161144 + 1.5542417966212 * $a +  $b / 4.0 - 0.0031777940220923 * ( $year - 1 );
                if ( $m < 0 ) {
                        $m--;
                }
                $Mar = intval( $m );
                if ( $m < 0 ) {
                        $m++;
                }
                $m -= $Mar;

                $c = intval( ( $Mar + 3 * ( $year - 1 ) + 5 * $b + 5 ) % 7 );
                if ( $c == 0 && $a > 11 && $m >= 0.89772376543210 ) {
                        $Mar++;
                } elseif ( $c == 1 && $a > 6 && $m >= 0.63287037037037 ) {
                        $Mar += 2;
                } elseif ( $c == 2 || $c == 4 || $c == 6 ) {
                        $Mar++;
                }

                $Mar += intval( ( $year - 3761 ) / 100 ) - intval( ( $year - 3761 ) / 400 ) - 24;
                return $Mar;
        }

        private static function tsToYear( $ts, $cName ) {
                $gy = substr( $ts, 0, 4 );
                $gm = substr( $ts, 4, 2 );
                $gd = substr( $ts, 6, 2 );

                if ( !strcmp( $cName, 'thai' ) ) {
                        # Thai solar dates
                        # Add 543 years to the Gregorian calendar
                        # Months and days are identical
                        $gy_offset = $gy + 543;
                } elseif ( ( !strcmp( $cName, 'minguo' ) ) || !strcmp( $cName, 'juche' ) ) {
                        # Minguo dates
                        # Deduct 1911 years from the Gregorian calendar
                        # Months and days are identical
                        $gy_offset = $gy - 1911;
                } elseif ( !strcmp( $cName, 'tenno' ) ) {
                        # Nengō dates up to Meiji period
                        # Deduct years from the Gregorian calendar
                        # depending on the nengo periods
                        # Months and days are identical
                        if ( ( $gy < 1912 ) || ( ( $gy == 1912 ) && ( $gm < 7 ) ) || ( ( $gy == 1912 ) && ( $gm == 7 ) && ( $gd < 31 ) ) ) {
                                # Meiji period
                                $gy_gannen = $gy - 1868 + 1;
                                $gy_offset = $gy_gannen;
                                if ( $gy_gannen == 1 ) {
                                        $gy_offset = '元';
                                }
                                $gy_offset = '明治' . $gy_offset;
                        } elseif (
                                ( ( $gy == 1912 ) && ( $gm == 7 ) && ( $gd == 31 ) ) ||
                                ( ( $gy == 1912 ) && ( $gm >= 8 ) ) ||
                                ( ( $gy > 1912 ) && ( $gy < 1926 ) ) ||
                                ( ( $gy == 1926 ) && ( $gm < 12 ) ) ||
                                ( ( $gy == 1926 ) && ( $gm == 12 ) && ( $gd < 26 ) )
                        )
                        {
                                # Taishō period
                                $gy_gannen = $gy - 1912 + 1;
                                $gy_offset = $gy_gannen;
                                if ( $gy_gannen == 1 ) {
                                        $gy_offset = '元';
                                }
                                $gy_offset = '大正' . $gy_offset;
                        } elseif (
                                ( ( $gy == 1926 ) && ( $gm == 12 ) && ( $gd >= 26 ) ) ||
                                ( ( $gy > 1926 ) && ( $gy < 1989 ) ) ||
                                ( ( $gy == 1989 ) && ( $gm == 1 ) && ( $gd < 8 ) )
                        )
                        {
                                # Shōwa period
                                $gy_gannen = $gy - 1926 + 1;
                                $gy_offset = $gy_gannen;
                                if ( $gy_gannen == 1 ) {
                                        $gy_offset = '元';
                                }
                                $gy_offset = '昭和' . $gy_offset;
                        } else {
                                # Heisei period
                                $gy_gannen = $gy - 1989 + 1;
                                $gy_offset = $gy_gannen;
                                if ( $gy_gannen == 1 ) {
                                        $gy_offset = '元';
                                }
                                $gy_offset = '平成' . $gy_offset;
                        }
                } else {
                        $gy_offset = $gy;
                }

                return array( $gy_offset, $gm, $gd );
        }

        static function romanNumeral( $num ) {
                static $table = array(
                        array( '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X' ),
                        array( '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', 'C' ),
                        array( '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM', 'M' ),
                        array( '', 'M', 'MM', 'MMM' )
                );

                $num = intval( $num );
                if ( $num > 3000 || $num <= 0 ) {
                        return $num;
                }

                $s = '';
                for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
                        if ( $num >= $pow10 ) {
                                $s .= $table[$i][(int)floor( $num / $pow10 )];
                        }
                        $num = $num % $pow10;
                }
                return $s;
        }

        static function hebrewNumeral( $num ) {
                static $table = array(
                        array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' ),
                        array( '', 'י', 'כ', 'ל', 'מ', 'נ', 'ס', 'ע', 'פ', 'צ', 'ק' ),
                        array( '', 'ק', 'ר', 'ש', 'ת', 'תק', 'תר', 'תש', 'תת', 'תתק', 'תתר' ),
                        array( '', 'א', 'ב', 'ג', 'ד', 'ה', 'ו', 'ז', 'ח', 'ט', 'י' )
                );

                $num = intval( $num );
                if ( $num > 9999 || $num <= 0 ) {
                        return $num;
                }

                $s = '';
                for ( $pow10 = 1000, $i = 3; $i >= 0; $pow10 /= 10, $i-- ) {
                        if ( $num >= $pow10 ) {
                                if ( $num == 15 || $num == 16 ) {
                                        $s .= $table[0][9] . $table[0][$num - 9];
                                        $num = 0;
                                } else {
                                        $s .= $table[$i][intval( ( $num / $pow10 ) )];
                                        if ( $pow10 == 1000 ) {
                                                $s .= "'";
                                        }
                                }
                        }
                        $num = $num % $pow10;
                }
                if ( strlen( $s ) == 2 ) {
                        $str = $s . "'";
                } else  {
                        $str = substr( $s, 0, strlen( $s ) - 2 ) . '"';
                        $str .= substr( $s, strlen( $s ) - 2, 2 );
                }
                $start = substr( $str, 0, strlen( $str ) - 2 );
                $end = substr( $str, strlen( $str ) - 2 );
                switch( $end ) {
                        case 'כ':
                                $str = $start . 'ך';
                                break;
                        case 'מ':
                                $str = $start . 'ם';
                                break;
                        case 'נ':
                                $str = $start . 'ן';
                                break;
                        case 'פ':
                                $str = $start . 'ף';
                                break;
                        case 'צ':
                                $str = $start . 'ץ';
                                break;
                }
                return $str;
        }

        function userAdjust( $ts, $tz = false ) {
                global $wgUser, $wgLocalTZoffset;

                if ( $tz === false ) {
                        $tz = $wgUser->getOption( 'timecorrection' );
                }

                $data = explode( '|', $tz, 3 );

                if ( $data[0] == 'ZoneInfo' ) {
                        wfSuppressWarnings();
                        $userTZ = timezone_open( $data[2] );
                        wfRestoreWarnings();
                        if ( $userTZ !== false ) {
                                $date = date_create( $ts, timezone_open( 'UTC' ) );
                                date_timezone_set( $date, $userTZ );
                                $date = date_format( $date, 'YmdHis' );
                                return $date;
                        }
                        # Unrecognized timezone, default to 'Offset' with the stored offset.
                        $data[0] = 'Offset';
                }

                $minDiff = 0;
                if ( $data[0] == 'System' || $tz == '' ) {
                        #  Global offset in minutes.
                        if ( isset( $wgLocalTZoffset ) ) {
                                $minDiff = $wgLocalTZoffset;
                        }
                } elseif ( $data[0] == 'Offset' ) {
                        $minDiff = intval( $data[1] );
                } else {
                        $data = explode( ':', $tz );
                        if ( count( $data ) == 2 ) {
                                $data[0] = intval( $data[0] );
                                $data[1] = intval( $data[1] );
                                $minDiff = abs( $data[0] ) * 60 + $data[1];
                                if ( $data[0] < 0 ) {
                                        $minDiff = -$minDiff;
                                }
                        } else {
                                $minDiff = intval( $data[0] ) * 60;
                        }
                }

                # No difference ? Return time unchanged
                if ( 0 == $minDiff ) {
                        return $ts;
                }

                wfSuppressWarnings(); // E_STRICT system time bitching
                # Generate an adjusted date; take advantage of the fact that mktime
                # will normalize out-of-range values so we don't have to split $minDiff
                # into hours and minutes.
                $t = mktime( (
                  (int)substr( $ts, 8, 2 ) ), # Hours
                  (int)substr( $ts, 10, 2 ) + $minDiff, # Minutes
                  (int)substr( $ts, 12, 2 ), # Seconds
                  (int)substr( $ts, 4, 2 ), # Month
                  (int)substr( $ts, 6, 2 ), # Day
                  (int)substr( $ts, 0, 4 ) ); # Year

                $date = date( 'YmdHis', $t );
                wfRestoreWarnings();

                return $date;
        }

        function dateFormat( $usePrefs = true ) {
                global $wgUser;

                if ( is_bool( $usePrefs ) ) {
                        if ( $usePrefs ) {
                                $datePreference = $wgUser->getDatePreference();
                        } else {
                                $datePreference = (string)User::getDefaultOption( 'date' );
                        }
                } else {
                        $datePreference = (string)$usePrefs;
                }

                // return int
                if ( $datePreference == '' ) {
                        return 'default';
                }

                return $datePreference;
        }

        function getDateFormatString( $type, $pref ) {
                if ( !isset( $this->dateFormatStrings[$type][$pref] ) ) {
                        if ( $pref == 'default' ) {
                                $pref = $this->getDefaultDateFormat();
                                $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
                        } else {
                                $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
                                if ( is_null( $df ) ) {
                                        $pref = $this->getDefaultDateFormat();
                                        $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
                                }
                        }
                        $this->dateFormatStrings[$type][$pref] = $df;
                }
                return $this->dateFormatStrings[$type][$pref];
        }

        function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
                $ts = wfTimestamp( TS_MW, $ts );
                if ( $adj ) {
                        $ts = $this->userAdjust( $ts, $timecorrection );
                }
                $df = $this->getDateFormatString( 'date', $this->dateFormat( $format ) );
                return $this->sprintfDate( $df, $ts );
        }

        function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
                $ts = wfTimestamp( TS_MW, $ts );
                if ( $adj ) {
                        $ts = $this->userAdjust( $ts, $timecorrection );
                }
                $df = $this->getDateFormatString( 'time', $this->dateFormat( $format ) );
                return $this->sprintfDate( $df, $ts );
        }

        function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false ) {
                $ts = wfTimestamp( TS_MW, $ts );
                if ( $adj ) {
                        $ts = $this->userAdjust( $ts, $timecorrection );
                }
                $df = $this->getDateFormatString( 'both', $this->dateFormat( $format ) );
                return $this->sprintfDate( $df, $ts );
        }

        private function internalUserTimeAndDate( $type, $ts, User $user, array $options ) {
                $ts = wfTimestamp( TS_MW, $ts );
                $options += array( 'timecorrection' => true, 'format' => true );
                if ( $options['timecorrection'] !== false ) {
                        if ( $options['timecorrection'] === true ) {
                                $offset = $user->getOption( 'timecorrection' );
                        } else {
                                $offset = $options['timecorrection'];
                        }
                        $ts = $this->userAdjust( $ts, $offset );
                }
                if ( $options['format'] === true ) {
                        $format = $user->getDatePreference();
                } else {
                        $format = $options['format'];
                }
                $df = $this->getDateFormatString( $type, $this->dateFormat( $format ) );
                return $this->sprintfDate( $df, $ts );
        }

        public function userDate( $ts, User $user, array $options = array() ) {
                return $this->internalUserTimeAndDate( 'date', $ts, $user, $options );
        }

        public function userTime( $ts, User $user, array $options = array() ) {
                return $this->internalUserTimeAndDate( 'time', $ts, $user, $options );
        }

        public function userTimeAndDate( $ts, User $user, array $options = array() ) {
                return $this->internalUserTimeAndDate( 'both', $ts, $user, $options );
        }

        function getMessage( $key ) {
                return self::$dataCache->getSubitem( $this->mCode, 'messages', $key );
        }

        function getAllMessages() {
                return self::$dataCache->getItem( $this->mCode, 'messages' );
        }

        function iconv( $in, $out, $string ) {
                # This is a wrapper for iconv in all languages except esperanto,
                # which does some nasty x-conversions beforehand

                # Even with //IGNORE iconv can whine about illegal characters in
                # *input* string. We just ignore those too.
                # REF: http://bugs.php.net/bug.php?id=37166
                # REF: https://bugzilla.wikimedia.org/show_bug.cgi?id=16885
                wfSuppressWarnings();
                $text = iconv( $in, $out . '//IGNORE', $string );
                wfRestoreWarnings();
                return $text;
        }

        // callback functions for uc(), lc(), ucwords(), ucwordbreaks()

        function ucwordbreaksCallbackAscii( $matches ) {
                return $this->ucfirst( $matches[1] );
        }

        function ucwordbreaksCallbackMB( $matches ) {
                return mb_strtoupper( $matches[0] );
        }

        function ucCallback( $matches ) {
                list( $wikiUpperChars ) = self::getCaseMaps();
                return strtr( $matches[1], $wikiUpperChars );
        }

        function lcCallback( $matches ) {
                list( , $wikiLowerChars ) = self::getCaseMaps();
                return strtr( $matches[1], $wikiLowerChars );
        }

        function ucwordsCallbackMB( $matches ) {
                return mb_strtoupper( $matches[0] );
        }

        function ucwordsCallbackWiki( $matches ) {
                list( $wikiUpperChars ) = self::getCaseMaps();
                return strtr( $matches[0], $wikiUpperChars );
        }

        function ucfirst( $str ) {
                $o = ord( $str );
                if ( $o < 96 ) { // if already uppercase...
                        return $str;
                } elseif ( $o < 128 ) {
                        return ucfirst( $str ); // use PHP's ucfirst()
                } else {
                        // fall back to more complex logic in case of multibyte strings
                        return $this->uc( $str, true );
                }
        }

        function uc( $str, $first = false ) {
                if ( function_exists( 'mb_strtoupper' ) ) {
                        if ( $first ) {
                                if ( $this->isMultibyte( $str ) ) {
                                        return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
                                } else {
                                        return ucfirst( $str );
                                }
                        } else {
                                return $this->isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
                        }
                } else {
                        if ( $this->isMultibyte( $str ) ) {
                                $x = $first ? '^' : '';
                                return preg_replace_callback(
                                        "/$x([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
                                        array( $this, 'ucCallback' ),
                                        $str
                                );
                        } else {
                                return $first ? ucfirst( $str ) : strtoupper( $str );
                        }
                }
        }

        function lcfirst( $str ) {
                $o = ord( $str );
                if ( !$o ) {
                        return strval( $str );
                } elseif ( $o >= 128 ) {
                        return $this->lc( $str, true );
                } elseif ( $o > 96 ) {
                        return $str;
                } else {
                        $str[0] = strtolower( $str[0] );
                        return $str;
                }
        }

        function lc( $str, $first = false ) {
                if ( function_exists( 'mb_strtolower' ) ) {
                        if ( $first ) {
                                if ( $this->isMultibyte( $str ) ) {
                                        return mb_strtolower( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
                                } else {
                                        return strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 );
                                }
                        } else {
                                return $this->isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
                        }
                } else {
                        if ( $this->isMultibyte( $str ) ) {
                                $x = $first ? '^' : '';
                                return preg_replace_callback(
                                        "/$x([A-Z]|[\\xc0-\\xff][\\x80-\\xbf]*)/",
                                        array( $this, 'lcCallback' ),
                                        $str
                                );
                        } else {
                                return $first ? strtolower( substr( $str, 0, 1 ) ) . substr( $str, 1 ) : strtolower( $str );
                        }
                }
        }

        function isMultibyte( $str ) {
                return (bool)preg_match( '/[\x80-\xff]/', $str );
        }

        function ucwords( $str ) {
                if ( $this->isMultibyte( $str ) ) {
                        $str = $this->lc( $str );

                        // regexp to find first letter in each word (i.e. after each space)
                        $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)| ([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";

                        // function to use to capitalize a single char
                        if ( function_exists( 'mb_strtoupper' ) ) {
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array( $this, 'ucwordsCallbackMB' ),
                                        $str
                                );
                        } else {
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array( $this, 'ucwordsCallbackWiki' ),
                                        $str
                                );
                        }
                } else {
                        return ucwords( strtolower( $str ) );
                }
        }

        function ucwordbreaks( $str ) {
                if ( $this->isMultibyte( $str ) ) {
                        $str = $this->lc( $str );

                        // since \b doesn't work for UTF-8, we explicitely define word break chars
                        $breaks = "[ \-\(\)\}\{\.,\?!]";

                        // find first letter after word break
                        $replaceRegexp = "/^([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)|$breaks([a-z]|[\\xc0-\\xff][\\x80-\\xbf]*)/";

                        if ( function_exists( 'mb_strtoupper' ) ) {
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array( $this, 'ucwordbreaksCallbackMB' ),
                                        $str
                                );
                        } else {
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array( $this, 'ucwordsCallbackWiki' ),
                                        $str
                                );
                        }
                } else {
                        return preg_replace_callback(
                                '/\b([\w\x80-\xff]+)\b/',
                                array( $this, 'ucwordbreaksCallbackAscii' ),
                                $str
                        );
                }
        }

        function caseFold( $s ) {
                return $this->uc( $s );
        }

        function checkTitleEncoding( $s ) {
                if ( is_array( $s ) ) {
                        wfDebugDieBacktrace( 'Given array to checkTitleEncoding.' );
                }
                # Check for non-UTF-8 URLs
                $ishigh = preg_match( '/[\x80-\xff]/', $s );
                if ( !$ishigh ) {
                        return $s;
                }

                $isutf8 = preg_match( '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
                                '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})+$/', $s );
                if ( $isutf8 ) {
                        return $s;
                }

                return $this->iconv( $this->fallback8bitEncoding(), 'utf-8', $s );
        }

        function fallback8bitEncoding() {
                return self::$dataCache->getItem( $this->mCode, 'fallback8bitEncoding' );
        }

        function hasWordBreaks() {
                return true;
        }

        function segmentByWord( $string ) {
                return $string;
        }

        function normalizeForSearch( $string ) {
                return self::convertDoubleWidth( $string );
        }

        protected static function convertDoubleWidth( $string ) {
                static $full = null;
                static $half = null;

                if ( $full === null ) {
                        $fullWidth = "０１２３４５６７８９ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ";
                        $halfWidth = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
                        $full = str_split( $fullWidth, 3 );
                        $half = str_split( $halfWidth );
                }

                $string = str_replace( $full, $half, $string );
                return $string;
        }

        protected static function insertSpace( $string, $pattern ) {
                $string = preg_replace( $pattern, " $1 ", $string );
                $string = preg_replace( '/ +/', ' ', $string );
                return $string;
        }

        function convertForSearchResult( $termsArray ) {
                # some languages, e.g. Chinese, need to do a conversion
                # in order for search results to be displayed correctly
                return $termsArray;
        }

        function firstChar( $s ) {
                $matches = array();
                preg_match(
                        '/^([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|' .
                                '[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})/',
                        $s,
                        $matches
                );

                if ( isset( $matches[1] ) ) {
                        if ( strlen( $matches[1] ) != 3 ) {
                                return $matches[1];
                        }

                        // Break down Hangul syllables to grab the first jamo
                        $code = utf8ToCodepoint( $matches[1] );
                        if ( $code < 0xac00 || 0xd7a4 <= $code ) {
                                return $matches[1];
                        } elseif ( $code < 0xb098 ) {
                                return "\xe3\x84\xb1";
                        } elseif ( $code < 0xb2e4 ) {
                                return "\xe3\x84\xb4";
                        } elseif ( $code < 0xb77c ) {
                                return "\xe3\x84\xb7";
                        } elseif ( $code < 0xb9c8 ) {
                                return "\xe3\x84\xb9";
                        } elseif ( $code < 0xbc14 ) {
                                return "\xe3\x85\x81";
                        } elseif ( $code < 0xc0ac ) {
                                return "\xe3\x85\x82";
                        } elseif ( $code < 0xc544 ) {
                                return "\xe3\x85\x85";
                        } elseif ( $code < 0xc790 ) {
                                return "\xe3\x85\x87";
                        } elseif ( $code < 0xcc28 ) {
                                return "\xe3\x85\x88";
                        } elseif ( $code < 0xce74 ) {
                                return "\xe3\x85\x8a";
                        } elseif ( $code < 0xd0c0 ) {
                                return "\xe3\x85\x8b";
                        } elseif ( $code < 0xd30c ) {
                                return "\xe3\x85\x8c";
                        } elseif ( $code < 0xd558 ) {
                                return "\xe3\x85\x8d";
                        } else {
                                return "\xe3\x85\x8e";
                        }
                } else {
                        return '';
                }
        }

        function initEncoding() {
                # Some languages may have an alternate char encoding option
                # (Esperanto X-coding, Japanese furigana conversion, etc)
                # If this language is used as the primary content language,
                # an override to the defaults can be set here on startup.
        }

        function recodeForEdit( $s ) {
                # For some languages we'll want to explicitly specify
                # which characters make it into the edit box raw
                # or are converted in some way or another.
                global $wgEditEncoding;
                if ( $wgEditEncoding == '' || $wgEditEncoding == 'UTF-8' ) {
                        return $s;
                } else {
                        return $this->iconv( 'UTF-8', $wgEditEncoding, $s );
                }
        }

        function recodeInput( $s ) {
                # Take the previous into account.
                global $wgEditEncoding;
                if ( $wgEditEncoding != '' ) {
                        $enc = $wgEditEncoding;
                } else {
                        $enc = 'UTF-8';
                }
                if ( $enc == 'UTF-8' ) {
                        return $s;
                } else {
                        return $this->iconv( $enc, 'UTF-8', $s );
                }
        }

        function normalize( $s ) {
                global $wgAllUnicodeFixes;
                $s = UtfNormal::cleanUp( $s );
                if ( $wgAllUnicodeFixes ) {
                        $s = $this->transformUsingPairFile( 'normalize-ar.ser', $s );
                        $s = $this->transformUsingPairFile( 'normalize-ml.ser', $s );
                }

                return $s;
        }

        function transformUsingPairFile( $file, $string ) {
                if ( !isset( $this->transformData[$file] ) ) {
                        $data = wfGetPrecompiledData( $file );
                        if ( $data === false ) {
                                throw new MWException( __METHOD__ . ": The transformation file $file is missing" );
                        }
                        $this->transformData[$file] = new ReplacementArray( $data );
                }
                return $this->transformData[$file]->replace( $string );
        }

        function isRTL() {
                return self::$dataCache->getItem( $this->mCode, 'rtl' );
        }

        function getDir() {
                return $this->isRTL() ? 'rtl' : 'ltr';
        }

        function alignStart() {
                return $this->isRTL() ? 'right' : 'left';
        }

        function alignEnd() {
                return $this->isRTL() ? 'left' : 'right';
        }

        function getDirMark( $opposite = false ) {
                $rtl = "\xE2\x80\x8F";
                $ltr = "\xE2\x80\x8E";
                if ( $opposite ) { return $this->isRTL() ? $ltr : $rtl; }
                return $this->isRTL() ? $rtl : $ltr;
        }

        function capitalizeAllNouns() {
                return self::$dataCache->getItem( $this->mCode, 'capitalizeAllNouns' );
        }

        function getArrow() {
                return $this->isRTL() ? '←' : '→';
        }

        function linkPrefixExtension() {
                return self::$dataCache->getItem( $this->mCode, 'linkPrefixExtension' );
        }

        function getMagicWords() {
                return self::$dataCache->getItem( $this->mCode, 'magicWords' );
        }

        protected function doMagicHook() {
                if ( $this->mMagicHookDone ) {
                        return;
                }
                $this->mMagicHookDone = true;
                wfProfileIn( 'LanguageGetMagic' );
                wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
                wfProfileOut( 'LanguageGetMagic' );
        }

        function getMagic( $mw ) {
                $this->doMagicHook();

                if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
                        $rawEntry = $this->mMagicExtensions[$mw->mId];
                } else {
                        $magicWords = $this->getMagicWords();
                        if ( isset( $magicWords[$mw->mId] ) ) {
                                $rawEntry = $magicWords[$mw->mId];
                        } else {
                                $rawEntry = false;
                        }
                }

                if ( !is_array( $rawEntry ) ) {
                        error_log( "\"$rawEntry\" is not a valid magic word for \"$mw->mId\"" );
                } else {
                        $mw->mCaseSensitive = $rawEntry[0];
                        $mw->mSynonyms = array_slice( $rawEntry, 1 );
                }
        }

        function addMagicWordsByLang( $newWords ) {
                $fallbackChain = $this->getFallbackLanguages();
                $fallbackChain = array_reverse( $fallbackChain );
                foreach ( $fallbackChain as $code ) {
                        if ( isset( $newWords[$code] ) ) {
                                $this->mMagicExtensions = $newWords[$code] + $this->mMagicExtensions;
                        }
                }
        }

        function getSpecialPageAliases() {
                // Cache aliases because it may be slow to load them
                if ( is_null( $this->mExtendedSpecialPageAliases ) ) {
                        // Initialise array
                        $this->mExtendedSpecialPageAliases =
                                self::$dataCache->getItem( $this->mCode, 'specialPageAliases' );
                        wfRunHooks( 'LanguageGetSpecialPageAliases',
                                array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
                }

                return $this->mExtendedSpecialPageAliases;
        }

        function emphasize( $text ) {
                return "<em>$text</em>";
        }

        public function formatNum( $number, $nocommafy = false ) {
                global $wgTranslateNumerals;
                if ( !$nocommafy ) {
                        $number = $this->commafy( $number );
                        $s = $this->separatorTransformTable();
                        if ( $s ) {
                                $number = strtr( $number, $s );
                        }
                }

                if ( $wgTranslateNumerals ) {
                        $s = $this->digitTransformTable();
                        if ( $s ) {
                                $number = strtr( $number, $s );
                        }
                }

                return $number;
        }

        function parseFormattedNumber( $number ) {
                $s = $this->digitTransformTable();
                if ( $s ) {
                        $number = strtr( $number, array_flip( $s ) );
                }

                $s = $this->separatorTransformTable();
                if ( $s ) {
                        $number = strtr( $number, array_flip( $s ) );
                }

                $number = strtr( $number, array( ',' => '' ) );
                return $number;
        }

        function commafy( $_ ) {
                $digitGroupingPattern = $this->digitGroupingPattern();
                if ( $_ === null ) {
                        return '';
                }

                if ( !$digitGroupingPattern || $digitGroupingPattern === "###,###,###" ) {
                        // default grouping is at thousands,  use the same for ###,###,### pattern too.
                        return strrev( (string)preg_replace( '/(\d{3})(?=\d)(?!\d*\.)/', '$1,', strrev( $_ ) ) );
                } else {
                        // Ref: http://cldr.unicode.org/translation/number-patterns
                        $sign = "";
                        if ( intval( $_ ) < 0 ) {
                                // For negative numbers apply the algorithm like positive number and add sign.
                                $sign =  "-";
                                $_ = substr( $_, 1 );
                        }
                        $numberpart = array();
                        $decimalpart = array();
                        $numMatches = preg_match_all( "/(#+)/", $digitGroupingPattern, $matches );
                        preg_match( "/\d+/", $_, $numberpart );
                        preg_match( "/\.\d*/", $_, $decimalpart );
                        $groupedNumber = ( count( $decimalpart ) > 0 ) ? $decimalpart[0]:"";
                        if ( $groupedNumber  === $_ ) {
                                // the string does not have any number part. Eg: .12345
                                return $sign . $groupedNumber;
                        }
                        $start = $end = strlen( $numberpart[0] );
                        while ( $start > 0 ) {
                                $match = $matches[0][$numMatches -1] ;
                                $matchLen = strlen( $match );
                                $start = $end - $matchLen;
                                if ( $start < 0 ) {
                                        $start = 0;
                                }
                                $groupedNumber = substr( $_ , $start, $end -$start ) . $groupedNumber ;
                                $end = $start;
                                if ( $numMatches > 1 ) {
                                        // use the last pattern for the rest of the number
                                        $numMatches--;
                                }
                                if ( $start > 0 ) {
                                        $groupedNumber = "," . $groupedNumber;
                                }
                        }
                        return $sign . $groupedNumber;
                }
        }
        function digitGroupingPattern() {
                return self::$dataCache->getItem( $this->mCode, 'digitGroupingPattern' );
        }

        function digitTransformTable() {
                return self::$dataCache->getItem( $this->mCode, 'digitTransformTable' );
        }

        function separatorTransformTable() {
                return self::$dataCache->getItem( $this->mCode, 'separatorTransformTable' );
        }

        function listToText( array $l ) {
                $s = '';
                $m = count( $l ) - 1;
                if ( $m == 1 ) {
                        return $l[0] . $this->getMessageFromDB( 'and' ) . $this->getMessageFromDB( 'word-separator' ) . $l[1];
                } else {
                        for ( $i = $m; $i >= 0; $i-- ) {
                                if ( $i == $m ) {
                                        $s = $l[$i];
                                } elseif ( $i == $m - 1 ) {
                                        $s = $l[$i] . $this->getMessageFromDB( 'and' ) . $this->getMessageFromDB( 'word-separator' ) . $s;
                                } else {
                                        $s = $l[$i] . $this->getMessageFromDB( 'comma-separator' ) . $s;
                                }
                        }
                        return $s;
                }
        }

        function commaList( array $list ) {
                return implode(
                        wfMsgExt(
                                'comma-separator',
                                array( 'parsemag', 'escapenoentities', 'language' => $this )
                        ),
                        $list
                );
        }

        function semicolonList( array $list ) {
                return implode(
                        wfMsgExt(
                                'semicolon-separator',
                                array( 'parsemag', 'escapenoentities', 'language' => $this )
                        ),
                        $list
                );
        }

        function pipeList( array $list ) {
                return implode(
                        wfMsgExt(
                                'pipe-separator',
                                array( 'escapenoentities', 'language' => $this )
                        ),
                        $list
                );
        }

        function truncate( $string, $length, $ellipsis = '...', $adjustLength = true ) {
                # Use the localized ellipsis character
                if ( $ellipsis == '...' ) {
                        $ellipsis = wfMsgExt( 'ellipsis', array( 'escapenoentities', 'language' => $this ) );
                }
                # Check if there is no need to truncate
                if ( $length == 0 ) {
                        return $ellipsis; // convention
                } elseif ( strlen( $string ) <= abs( $length ) ) {
                        return $string; // no need to truncate
                }
                $stringOriginal = $string;
                # If ellipsis length is >= $length then we can't apply $adjustLength
                if ( $adjustLength && strlen( $ellipsis ) >= abs( $length ) ) {
                        $string = $ellipsis; // this can be slightly unexpected
                # Otherwise, truncate and add ellipsis...
                } else {
                        $eLength = $adjustLength ? strlen( $ellipsis ) : 0;
                        if ( $length > 0 ) {
                                $length -= $eLength;
                                $string = substr( $string, 0, $length ); // xyz...
                                $string = $this->removeBadCharLast( $string );
                                $string = $string . $ellipsis;
                        } else {
                                $length += $eLength;
                                $string = substr( $string, $length ); // ...xyz
                                $string = $this->removeBadCharFirst( $string );
                                $string = $ellipsis . $string;
                        }
                }
                # Do not truncate if the ellipsis makes the string longer/equal (bug 22181).
                # This check is *not* redundant if $adjustLength, due to the single case where
                # LEN($ellipsis) > ABS($limit arg); $stringOriginal could be shorter than $string.
                if ( strlen( $string ) < strlen( $stringOriginal ) ) {
                        return $string;
                } else {
                        return $stringOriginal;
                }
        }

        protected function removeBadCharLast( $string ) {
                if ( $string != '' ) {
                        $char = ord( $string[strlen( $string ) - 1] );
                        $m = array();
                        if ( $char >= 0xc0 ) {
                                # We got the first byte only of a multibyte char; remove it.
                                $string = substr( $string, 0, -1 );
                        } elseif ( $char >= 0x80 &&
                                  preg_match( '/^(.*)(?:[\xe0-\xef][\x80-\xbf]|' .
                                                          '[\xf0-\xf7][\x80-\xbf]{1,2})$/', $string, $m ) )
                        {
                                # We chopped in the middle of a character; remove it
                                $string = $m[1];
                        }
                }
                return $string;
        }

        protected function removeBadCharFirst( $string ) {
                if ( $string != '' ) {
                        $char = ord( $string[0] );
                        if ( $char >= 0x80 && $char < 0xc0 ) {
                                # We chopped in the middle of a character; remove the whole thing
                                $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
                        }
                }
                return $string;
        }

        function truncateHtml( $text, $length, $ellipsis = '...' ) {
                # Use the localized ellipsis character
                if ( $ellipsis == '...' ) {
                        $ellipsis = wfMsgExt( 'ellipsis', array( 'escapenoentities', 'language' => $this ) );
                }
                # Check if there is clearly no need to truncate
                if ( $length <= 0 ) {
                        return $ellipsis; // no text shown, nothing to format (convention)
                } elseif ( strlen( $text ) <= $length ) {
                        return $text; // string short enough even *with* HTML (short-circuit)
                }

                $dispLen = 0; // innerHTML legth so far
                $testingEllipsis = false; // checking if ellipses will make string longer/equal?
                $tagType = 0; // 0-open, 1-close
                $bracketState = 0; // 1-tag start, 2-tag name, 0-neither
                $entityState = 0; // 0-not entity, 1-entity
                $tag = $ret = ''; // accumulated tag name, accumulated result string
                $openTags = array(); // open tag stack
                $maybeState = null; // possible truncation state

                $textLen = strlen( $text );
                $neLength = max( 0, $length - strlen( $ellipsis ) ); // non-ellipsis len if truncated
                for ( $pos = 0; true; ++$pos ) {
                        # Consider truncation once the display length has reached the maximim.
                        # We check if $dispLen > 0 to grab tags for the $neLength = 0 case.
                        # Check that we're not in the middle of a bracket/entity...
                        if ( $dispLen && $dispLen >= $neLength && $bracketState == 0 && !$entityState ) {
                                if ( !$testingEllipsis ) {
                                        $testingEllipsis = true;
                                        # Save where we are; we will truncate here unless there turn out to
                                        # be so few remaining characters that truncation is not necessary.
                                        if ( !$maybeState ) { // already saved? ($neLength = 0 case)
                                                $maybeState = array( $ret, $openTags ); // save state
                                        }
                                } elseif ( $dispLen > $length && $dispLen > strlen( $ellipsis ) ) {
                                        # String in fact does need truncation, the truncation point was OK.
                                        list( $ret, $openTags ) = $maybeState; // reload state
                                        $ret = $this->removeBadCharLast( $ret ); // multi-byte char fix
                                        $ret .= $ellipsis; // add ellipsis
                                        break;
                                }
                        }
                        if ( $pos >= $textLen ) break; // extra iteration just for above checks

                        # Read the next char...
                        $ch = $text[$pos];
                        $lastCh = $pos ? $text[$pos - 1] : '';
                        $ret .= $ch; // add to result string
                        if ( $ch == '<' ) {
                                $this->truncate_endBracket( $tag, $tagType, $lastCh, $openTags ); // for bad HTML
                                $entityState = 0; // for bad HTML
                                $bracketState = 1; // tag started (checking for backslash)
                        } elseif ( $ch == '>' ) {
                                $this->truncate_endBracket( $tag, $tagType, $lastCh, $openTags );
                                $entityState = 0; // for bad HTML
                                $bracketState = 0; // out of brackets
                        } elseif ( $bracketState == 1 ) {
                                if ( $ch == '/' ) {
                                        $tagType = 1; // close tag (e.g. "</span>")
                                } else {
                                        $tagType = 0; // open tag (e.g. "<span>")
                                        $tag .= $ch;
                                }
                                $bracketState = 2; // building tag name
                        } elseif ( $bracketState == 2 ) {
                                if ( $ch != ' ' ) {
                                        $tag .= $ch;
                                } else {
                                        // Name found (e.g. "<a href=..."), add on tag attributes...
                                        $pos += $this->truncate_skip( $ret, $text, "<>", $pos + 1 );
                                }
                        } elseif ( $bracketState == 0 ) {
                                if ( $entityState ) {
                                        if ( $ch == ';' ) {
                                                $entityState = 0;
                                                $dispLen++; // entity is one displayed char
                                        }
                                } else {
                                        if ( $neLength == 0 && !$maybeState ) {
                                                // Save state without $ch. We want to *hit* the first
                                                // display char (to get tags) but not *use* it if truncating.
                                                $maybeState = array( substr( $ret, 0, -1 ), $openTags );
                                        }
                                        if ( $ch == '&' ) {
                                                $entityState = 1; // entity found, (e.g. "&#160;")
                                        } else {
                                                $dispLen++; // this char is displayed
                                                // Add the next $max display text chars after this in one swoop...
                                                $max = ( $testingEllipsis ? $length : $neLength ) - $dispLen;
                                                $skipped = $this->truncate_skip( $ret, $text, "<>&", $pos + 1, $max );
                                                $dispLen += $skipped;
                                                $pos += $skipped;
                                        }
                                }
                        }
                }
                // Close the last tag if left unclosed by bad HTML
                $this->truncate_endBracket( $tag, $text[$textLen - 1], $tagType, $openTags );
                while ( count( $openTags ) > 0 ) {
                        $ret .= '</' . array_pop( $openTags ) . '>'; // close open tags
                }
                return $ret;
        }

        private function truncate_skip( &$ret, $text, $search, $start, $len = null ) {
                if ( $len === null ) {
                        $len = -1; // -1 means "no limit" for strcspn
                } elseif ( $len < 0 ) {
                        $len = 0; // sanity
                }
                $skipCount = 0;
                if ( $start < strlen( $text ) ) {
                        $skipCount = strcspn( $text, $search, $start, $len );
                        $ret .= substr( $text, $start, $skipCount );
                }
                return $skipCount;
        }

        private function truncate_endBracket( &$tag, $tagType, $lastCh, &$openTags ) {
                $tag = ltrim( $tag );
                if ( $tag != '' ) {
                        if ( $tagType == 0 && $lastCh != '/' ) {
                                $openTags[] = $tag; // tag opened (didn't close itself)
                        } elseif ( $tagType == 1 ) {
                                if ( $openTags && $tag == $openTags[count( $openTags ) - 1] ) {
                                        array_pop( $openTags ); // tag closed
                                }
                        }
                        $tag = '';
                }
        }

        function convertGrammar( $word, $case ) {
                global $wgGrammarForms;
                if ( isset( $wgGrammarForms[$this->getCode()][$case][$word] ) ) {
                        return $wgGrammarForms[$this->getCode()][$case][$word];
                }
                return $word;
        }

        function gender( $gender, $forms ) {
                if ( !count( $forms ) ) {
                        return '';
                }
                $forms = $this->preConvertPlural( $forms, 2 );
                if ( $gender === 'male' ) {
                        return $forms[0];
                }
                if ( $gender === 'female' ) {
                        return $forms[1];
                }
                return isset( $forms[2] ) ? $forms[2] : $forms[0];
        }

        function convertPlural( $count, $forms ) {
                if ( !count( $forms ) ) {
                        return '';
                }
                $forms = $this->preConvertPlural( $forms, 2 );

                return ( $count == 1 ) ? $forms[0] : $forms[1];
        }

        protected function preConvertPlural( /* Array */ $forms, $count ) {
                while ( count( $forms ) < $count ) {
                        $forms[] = $forms[count( $forms ) - 1];
                }
                return $forms;
        }

        function translateBlockExpiry( $str ) {
                $duration = SpecialBlock::getSuggestedDurations( $this );
                foreach ( $duration as $show => $value ) {
                        if ( strcmp( $str, $value ) == 0 ) {
                                return htmlspecialchars( trim( $show ) );
                        }
                }

                // Since usually only infinite or indefinite is only on list, so try
                // equivalents if still here.
                $indefs = array( 'infinite', 'infinity', 'indefinite' );
                if ( in_array( $str, $indefs ) ) {
                        foreach ( $indefs as $val ) {
                                $show = array_search( $val, $duration, true );
                                if ( $show !== false ) {
                                        return htmlspecialchars( trim( $show ) );
                                }
                        }
                }
                // If all else fails, return the original string.
                return $str;
        }

        public function segmentForDiff( $text ) {
                return $text;
        }

        public function unsegmentForDiff( $text ) {
                return $text;
        }

        public function getConverter() {
                return $this->mConverter;
        }

        public function autoConvertToAllVariants( $text ) {
                return $this->mConverter->autoConvertToAllVariants( $text );
        }

        public function convert( $text ) {
                return $this->mConverter->convert( $text );
        }

        public function convertTitle( $title ) {
                return $this->mConverter->convertTitle( $title );
        }

        public function hasVariants() {
                return sizeof( $this->getVariants() ) > 1;
        }

        public function hasVariant( $variant ) {
                return (bool)$this->mConverter->validateVariant( $variant );
        }

        public function armourMath( $text ) {
                return $this->mConverter->armourMath( $text );
        }

        public function convertHtml( $text, $isTitle = false ) {
                return htmlspecialchars( $this->convert( $text, $isTitle ) );
        }

        public function convertCategoryKey( $key ) {
                return $this->mConverter->convertCategoryKey( $key );
        }

        public function getVariants() {
                return $this->mConverter->getVariants();
        }

        public function getPreferredVariant() {
                return $this->mConverter->getPreferredVariant();
        }

        public function getDefaultVariant() {
                return $this->mConverter->getDefaultVariant();
        }

        public function getURLVariant() {
                return $this->mConverter->getURLVariant();
        }

        public function findVariantLink( &$link, &$nt, $ignoreOtherCond = false ) {
                $this->mConverter->findVariantLink( $link, $nt, $ignoreOtherCond );
        }

        public function convertLinkToAllVariants( $text ) {
                return $this->mConverter->convertLinkToAllVariants( $text );
        }

        function getExtraHashOptions() {
                return $this->mConverter->getExtraHashOptions();
        }

        public function getParsedTitle() {
                return $this->mConverter->getParsedTitle();
        }

        public function markNoConversion( $text, $noParse = false ) {
                return $this->mConverter->markNoConversion( $text, $noParse );
        }

        public function linkTrail() {
                return self::$dataCache->getItem( $this->mCode, 'linkTrail' );
        }

        function getLangObj() {
                return $this;
        }

        public function getCode() {
                return $this->mCode;
        }

        public function getHtmlCode() {
                if ( is_null( $this->mHtmlCode ) ) {
                        $this->mHtmlCode = wfBCP47( $this->getCode() );
                }
                return $this->mHtmlCode;
        }

        public function setCode( $code ) {
                $this->mCode = $code;
                // Ensure we don't leave an incorrect html code lying around
                $this->mHtmlCode = null;
        }

        public static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
                // Protect against path traversal
                if ( !Language::isValidCode( $code )
                        || strcspn( $code, ":/\\\000" ) !== strlen( $code ) )
                {
                        throw new MWException( "Invalid language code \"$code\"" );
                }

                return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
        }

        public static function getCodeFromFileName( $filename, $prefix = 'Language', $suffix = '.php' ) {
                $m = null;
                preg_match( '/' . preg_quote( $prefix, '/' ) . '([A-Z][a-z_]+)' .
                        preg_quote( $suffix, '/' ) . '/', $filename, $m );
                if ( !count( $m ) ) {
                        return false;
                }
                return str_replace( '_', '-', strtolower( $m[1] ) );
        }

        public static function getMessagesFileName( $code ) {
                global $IP;
                $file = self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
                wfRunHooks( 'Language::getMessagesFileName', array( $code, &$file ) );
                return $file;
        }

        public static function getClassFileName( $code ) {
                global $IP;
                return self::getFileName( "$IP/languages/classes/Language", $code, '.php' );
        }

        public static function getFallbackFor( $code ) {
                if ( $code === 'en' || !Language::isValidBuiltInCode( $code ) ) {
                        return false;
                } else {
                        $fallbacks = self::getFallbacksFor( $code );
                        $first = array_shift( $fallbacks );
                        return $first;
                }
        }

        public static function getFallbacksFor( $code ) {
                if ( $code === 'en' || !Language::isValidBuiltInCode( $code ) ) {
                        return array();
                } else {
                        $v = self::getLocalisationCache()->getItem( $code, 'fallback' );
                        $v = array_map( 'trim', explode( ',', $v ) );
                        if ( $v[count( $v ) - 1] !== 'en' ) {
                                $v[] = 'en';
                        }
                        return $v;
                }
        }

        public static function getMessagesFor( $code ) {
                return self::getLocalisationCache()->getItem( $code, 'messages' );
        }

        public static function getMessageFor( $key, $code ) {
                return self::getLocalisationCache()->getSubitem( $code, 'messages', $key );
        }

        public static function getMessageKeysFor( $code ) {
                return self::getLocalisationCache()->getSubItemList( $code, 'messages' );
        }

        function fixVariableInNamespace( $talk ) {
                if ( strpos( $talk, '$1' ) === false ) {
                        return $talk;
                }

                global $wgMetaNamespace;
                $talk = str_replace( '$1', $wgMetaNamespace, $talk );

                # Allow grammar transformations
                # Allowing full message-style parsing would make simple requests
                # such as action=raw much more expensive than they need to be.
                # This will hopefully cover most cases.
                $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
                        array( &$this, 'replaceGrammarInNamespace' ), $talk );
                return str_replace( ' ', '_', $talk );
        }

        function replaceGrammarInNamespace( $m ) {
                return $this->convertGrammar( trim( $m[2] ), trim( $m[1] ) );
        }

        static function getCaseMaps() {
                static $wikiUpperChars, $wikiLowerChars;
                if ( isset( $wikiUpperChars ) ) {
                        return array( $wikiUpperChars, $wikiLowerChars );
                }

                wfProfileIn( __METHOD__ );
                $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
                if ( $arr === false ) {
                        throw new MWException(
                                "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
                }
                $wikiUpperChars = $arr['wikiUpperChars'];
                $wikiLowerChars = $arr['wikiLowerChars'];
                wfProfileOut( __METHOD__ );
                return array( $wikiUpperChars, $wikiLowerChars );
        }

        public function formatExpiry( $expiry, $format = true ) {
                static $infinity, $infinityMsg;
                if ( $infinity === null ) {
                        $infinityMsg = wfMessage( 'infiniteblock' );
                        $infinity = wfGetDB( DB_SLAVE )->getInfinity();
                }

                if ( $expiry == '' || $expiry == $infinity ) {
                        return $format === true
                                ? $infinityMsg
                                : $infinity;
                } else {
                        return $format === true
                                ? $this->timeanddate( $expiry, /* User preference timezone */ true )
                                : wfTimestamp( $format, $expiry );
                }
        }

        function formatTimePeriod( $seconds, $format = array() ) {
                if ( !is_array( $format ) ) {
                        $format = array( 'avoid' => $format ); // For backwards compatibility
                }
                if ( !isset( $format['avoid'] ) ) {
                        $format['avoid'] = false;
                }
                if ( !isset( $format['noabbrevs' ] ) ) {
                        $format['noabbrevs'] = false;
                }
                $secondsMsg = wfMessage(
                        $format['noabbrevs'] ? 'seconds' : 'seconds-abbrev' )->inLanguage( $this );
                $minutesMsg = wfMessage(
                        $format['noabbrevs'] ? 'minutes' : 'minutes-abbrev' )->inLanguage( $this );
                $hoursMsg = wfMessage(
                        $format['noabbrevs'] ? 'hours' : 'hours-abbrev' )->inLanguage( $this );
                $daysMsg = wfMessage(
                        $format['noabbrevs'] ? 'days' : 'days-abbrev' )->inLanguage( $this );

                if ( round( $seconds * 10 ) < 100 ) {
                        $s = $this->formatNum( sprintf( "%.1f", round( $seconds * 10 ) / 10 ) );
                        $s = $secondsMsg->params( $s )->text();
                } elseif ( round( $seconds ) < 60 ) {
                        $s = $this->formatNum( round( $seconds ) );
                        $s = $secondsMsg->params( $s )->text();
                } elseif ( round( $seconds ) < 3600 ) {
                        $minutes = floor( $seconds / 60 );
                        $secondsPart = round( fmod( $seconds, 60 ) );
                        if ( $secondsPart == 60 ) {
                                $secondsPart = 0;
                                $minutes++;
                        }
                        $s = $minutesMsg->params( $this->formatNum( $minutes ) )->text();
                        $s .= ' ';
                        $s .= $secondsMsg->params( $this->formatNum( $secondsPart ) )->text();
                } elseif ( round( $seconds ) <= 2 * 86400 ) {
                        $hours = floor( $seconds / 3600 );
                        $minutes = floor( ( $seconds - $hours * 3600 ) / 60 );
                        $secondsPart = round( $seconds - $hours * 3600 - $minutes * 60 );
                        if ( $secondsPart == 60 ) {
                                $secondsPart = 0;
                                $minutes++;
                        }
                        if ( $minutes == 60 ) {
                                $minutes = 0;
                                $hours++;
                        }
                        $s = $hoursMsg->params( $this->formatNum( $hours ) )->text();
                        $s .= ' ';
                        $s .= $minutesMsg->params( $this->formatNum( $minutes ) )->text();
                        if ( !in_array( $format['avoid'], array( 'avoidseconds', 'avoidminutes' ) ) ) {
                                $s .= ' ' . $secondsMsg->params( $this->formatNum( $secondsPart ) )->text();
                        }
                } else {
                        $days = floor( $seconds / 86400 );
                        if ( $format['avoid'] === 'avoidminutes' ) {
                                $hours = round( ( $seconds - $days * 86400 ) / 3600 );
                                if ( $hours == 24 ) {
                                        $hours = 0;
                                        $days++;
                                }
                                $s = $daysMsg->params( $this->formatNum( $days ) )->text();
                                $s .= ' ';
                                $s .= $hoursMsg->params( $this->formatNum( $hours ) )->text();
                        } elseif ( $format['avoid'] === 'avoidseconds' ) {
                                $hours = floor( ( $seconds - $days * 86400 ) / 3600 );
                                $minutes = round( ( $seconds - $days * 86400 - $hours * 3600 ) / 60 );
                                if ( $minutes == 60 ) {
                                        $minutes = 0;
                                        $hours++;
                                }
                                if ( $hours == 24 ) {
                                        $hours = 0;
                                        $days++;
                                }
                                $s = $daysMsg->params( $this->formatNum( $days ) )->text();
                                $s .= ' ';
                                $s .= $hoursMsg->params( $this->formatNum( $hours ) )->text();
                                $s .= ' ';
                                $s .= $minutesMsg->params( $this->formatNum( $minutes ) )->text();
                        } else {
                                $s = $daysMsg->params( $this->formatNum( $days ) )->text();
                                $s .= ' ';
                                $s .= $this->formatTimePeriod( $seconds - $days * 86400, $format );
                        }
                }
                return $s;
        }

        function formatBitrate( $bps ) {
                return $this->formatComputingNumbers( $bps, 1000, "bitrate-$1bits" );
        }

        function formatComputingNumbers( $size, $boundary, $messageKey ) {
                if ( $size <= 0 ) {
                        return str_replace( '$1', $this->formatNum( $size ),
                                $this->getMessageFromDB( str_replace( '$1', '', $messageKey ) )
                        );
                }
                $sizes = array( '', 'kilo', 'mega', 'giga', 'tera', 'peta', 'exa', 'zeta', 'yotta' );
                $index = 0;

                $maxIndex = count( $sizes ) - 1;
                while ( $size >= $boundary && $index < $maxIndex ) {
                        $index++;
                        $size /= $boundary;
                }

                // For small sizes no decimal places necessary
                $round = 0;
                if ( $index > 1 ) {
                        // For MB and bigger two decimal places are smarter
                        $round = 2;
                }
                $msg = str_replace( '$1', $sizes[$index], $messageKey );

                $size = round( $size, $round );
                $text = $this->getMessageFromDB( $msg );
                return str_replace( '$1', $this->formatNum( $size ), $text );
        }

        function formatSize( $size ) {
                return $this->formatComputingNumbers( $size, 1024, "size-$1bytes" );
        }

        function specialList( $page, $details, $oppositedm = true ) {
                $dirmark = ( $oppositedm ? $this->getDirMark( true ) : '' ) .
                        $this->getDirMark();
                $details = $details ? $dirmark . $this->getMessageFromDB( 'word-separator' ) .
                        wfMsgExt( 'parentheses', array( 'escape', 'replaceafter', 'language' => $this ), $details ) : '';
                return $page . $details;
        }

        public function viewPrevNext( Title $title, $offset, $limit, array $query = array(), $atend = false ) {
                // @todo FIXME: Why on earth this needs one message for the text and another one for tooltip?

                # Make 'previous' link
                $prev = wfMessage( 'prevn' )->inLanguage( $this )->title( $title )->numParams( $limit )->text();
                if ( $offset > 0 ) {
                        $plink = $this->numLink( $title, max( $offset - $limit, 0 ), $limit,
                                $query, $prev, 'prevn-title', 'mw-prevlink' );
                } else {
                        $plink = htmlspecialchars( $prev );
                }

                # Make 'next' link
                $next = wfMessage( 'nextn' )->inLanguage( $this )->title( $title )->numParams( $limit )->text();
                if ( $atend ) {
                        $nlink = htmlspecialchars( $next );
                } else {
                        $nlink = $this->numLink( $title, $offset + $limit, $limit,
                                $query, $next, 'prevn-title', 'mw-nextlink' );
                }

                # Make links to set number of items per page
                $numLinks = array();
                foreach ( array( 20, 50, 100, 250, 500 ) as $num ) {
                        $numLinks[] = $this->numLink( $title, $offset, $num,
                                $query, $this->formatNum( $num ), 'shown-title', 'mw-numlink' );
                }

                return wfMessage( 'viewprevnext' )->inLanguage( $this )->title( $title
                        )->rawParams( $plink, $nlink, $this->pipeList( $numLinks ) )->escaped();
        }

        private function numLink( Title $title, $offset, $limit, array $query, $link, $tooltipMsg, $class ) {
                $query = array( 'limit' => $limit, 'offset' => $offset ) + $query;
                $tooltip = wfMessage( $tooltipMsg )->inLanguage( $this )->title( $title )->numParams( $limit )->text();
                return Html::element( 'a', array( 'href' => $title->getLocalURL( $query ),
                        'title' => $tooltip, 'class' => $class ), $link );
        }

        public function getConvRuleTitle() {
                return $this->mConverter->getConvRuleTitle();
        }
}