Wikipedia:用戶介面翻譯/Language.php - 維基百科，自由嘅百科全書

# Wikipedia:用戶介面翻譯/Language.php

### 出自維基百科，自由嘅百科全書

< Wikipedia:用戶介面翻譯

各用戶喺編輯呢啲原始碼時嘅注意事項：

1. 位於 <pre> 同 </pre> 之外嘅文字會被忽略。
2. 請以英文版嘅原始碼翻譯，以確保翻譯無誤。
3. 建議對一小部份嘅原始碼作出修改，以確保原始碼嘅語法正確無誤。
4. 擴展部件信息只會節錄英文同粵語部份，其它嘅語言將唔會列示。
5. 根據MediaWiki軟件嘅讀我檔案，除非有特別嘅指明，否則以下所有嘅文字都會以GPL v2 或以上版本發佈。

    <?php
    /**
     * @addtogroup Language
     */

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

    #
    # In general you should not make customizations in these language files
    # directly, but should use the MediaWiki: special namespace to customize
    # user interface messages through the wiki.
    # See http://meta.wikipedia.org/wiki/MediaWiki_namespace
    #
    # NOTE TO TRANSLATORS: Do not copy this whole file when making translations!
    # A lot of common constants and a base class with inheritable methods are
    # defined here, which should not be redefined. See the other LanguageXx.php
    # files for examples.
    #

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

    global $wgInputEncoding, $wgOutputEncoding;

    /**
     * These are always UTF-8, they exist only for backwards compatibility
     */
    $wgInputEncoding    = "UTF-8";
    $wgOutputEncoding       = "UTF-8";

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

    /* a fake language converter */
    class FakeConverter {
            var $mLang;
            function FakeConverter($langobj) {$this->mLang = $langobj;}
            function convert($t, $i) {return $t;}
            function parserConvert($t, $p) {return $t;}
            function getVariants() { return array( $this->mLang->getCode() ); }
            function getPreferredVariant() {return $this->mLang->getCode(); }
            function findVariantLink(&$l, &$n) {}
            function getExtraHashOptions() {return '';}
            function getParsedTitle() {return '';}
            function markNoConversion($text, $noParse=false) {return $text;}
            function convertCategoryKey( $key ) {return $key; }
            function convertLinkToAllVariants($text){ return array( $this->mLang->getCode() => $text); }
            function armourMath($text){ return $text; }
    }

    #--------------------------------------------------------------------------
    # Internationalisation code
    #--------------------------------------------------------------------------

    class Language {
            var $mConverter, $mVariants, $mCode, $mLoaded = false;

            static public $mLocalisationKeys = array( 'fallback', 'namespaceNames',
                    'skinNames', 'mathNames',
                    'bookstoreList', 'magicWords', 'messages', 'rtl', 'digitTransformTable',
                    'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
                    'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
                    'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
                    'defaultDateFormat', 'extraUserToggles', 'specialPageAliases' );

            static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
                    'dateFormats', 'defaultUserOptionOverrides', 'magicWords' );

            static public $mMergeableListKeys = array( 'extraUserToggles' );

            static public $mMergeableAliasListKeys = array( 'specialPageAliases' );

            static public $mLocalisationCache = 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'
            );

            /**
             * Create a language object for a given language code
             */
            static function factory( $code ) {
                    global $IP;
                    static $recursionLevel = 0;

                    if ( $code == 'en' ) {
                            $class = 'Language';
                    } else {
                            $class = 'Language' . str_replace( '-', '_', ucfirst( $code ) );
                            // Preload base classes to work around APC/PHP5 bug
                            if ( file_exists( "$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");
                            }
                    }

                    if ( $recursionLevel > 5 ) {
                            throw new MWException( "Language fallback loop detected when creating class $class\n" );
                    }

                    if( ! class_exists( $class ) ) {
                            $fallback = Language::getFallbackFor( $code );
                            ++$recursionLevel;
                            $lang = Language::factory( $fallback );
                            --$recursionLevel;
                            $lang->setCode( $code );
                    } else {
                            $lang = new $class;
                    }

                    return $lang;
            }

            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 ) ) );
                    }
            }

            /**
             * Hook which will be called if this is the content language.
             * Descendants can use this to register hook functions or modify globals
             */
            function initContLang() {}

            /**
             * @deprecated
             * @return array
             */
            function getDefaultUserOptions() {
                    return User::getDefaultOptions();
            }

            function getFallbackLanguageCode() {
                    $this->load();
                    return $this->fallback;
            }

            /**
             * Exports $wgBookstoreListEn
             * @return array
             */
            function getBookstoreList() {
                    $this->load();
                    return $this->bookstoreList;
            }

            /**
             * @return array
             */
            function getNamespaces() {
                    $this->load();
                    return $this->namespaceNames;
            }

            /**
             * A convenience function that returns the same thing as
             * getNamespaces() except with the array values changed to ' '
             * where it found '_', useful for producing output to be displayed
             * e.g. in <select> forms.
             *
             * @return array
             */
            function getFormattedNamespaces() {
                    $ns = $this->getNamespaces();
                    foreach($ns as $k => $v) {
                            $ns[$k] = strtr($v, '_', ' ');
                    }
                    return $ns;
            }

            /**
             * Get a namespace value by key
             * <code>
             * $mw_ns = $wgContLang->getNsText( NS_MEDIAWIKI );
             * echo $mw_ns; // prints 'MediaWiki'
             * </code>
             *
             * @param int $index the array key of the namespace to return
             * @return mixed, string if the namespace value exists, otherwise false
             */
            function getNsText( $index ) {
                    $ns = $this->getNamespaces();
                    return isset( $ns[$index] ) ? $ns[$index] : false;
            }

            /**
             * A convenience function that returns the same thing as
             * getNsText() except with '_' changed to ' ', useful for
             * producing output.
             *
             * @return array
             */
            function getFormattedNsText( $index ) {
                    $ns = $this->getNsText( $index );
                    return strtr($ns, '_', ' ');
            }

            /**
             * Get a namespace key by value, case insensetive.
             *
             * @param string $text
             * @return mixed An integer if $text is a valid value otherwise false
             */
            function getNsIndex( $text ) {
                    $this->load();
                    $lctext = $this->lc($text);
                    return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
            }

            /**
             * short names for language variants used for language conversion links.
             *
             * @param string $code
             * @return string
             */
            function getVariantname( $code ) {
                    return $this->getMessageFromDB( "variantname-$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' )
                    );
            }

            function getSkinNames() {
                    $this->load();
                    return $this->skinNames;
            }

            function getMathNames() {
                    $this->load();
                    return $this->mathNames;
            }

            function getDatePreferences() {
                    $this->load();
                    return $this->datePreferences;
            }

            function getDateFormats() {
                    $this->load();
                    return $this->dateFormats;
            }

            function getDefaultDateFormat() {
                    $this->load();
                    return $this->defaultDateFormat;
            }

            function getDatePreferenceMigrationMap() {
                    $this->load();
                    return $this->datePreferenceMigrationMap;
            }

            function getDefaultUserOptionOverrides() {
                    $this->load();
                    return $this->defaultUserOptionOverrides;
            }

            function getExtraUserToggles() {
                    $this->load();
                    return $this->extraUserToggles;
            }

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

            /**
             * Get language names, indexed by code.
             * If $customisedOnly is true, only returns codes with a messages file
             */
            public static function getLanguageNames( $customisedOnly = false ) {
                    global $wgLanguageNames;
                    if ( !$customisedOnly ) {
                            return $wgLanguageNames;
                    }

                    global $IP;
                    $messageFiles = glob( "$IP/languages/messages/Messages*.php" );
                    $names = array();
                    foreach ( $messageFiles as $file ) {
                            $m = array();
                            if( preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $file, $m ) ) {
                                    $code = str_replace( '_', '-', strtolower( $m[1] ) );
                                    if ( isset( $wgLanguageNames[$code] ) ) {
                                            $names[$code] = $wgLanguageNames[$code];
                                    }
                            }
                    }
                    return $names;
            }

            /**
             * Ugly hack to get a message maybe from the MediaWiki namespace, if this
             * language object is the content or user language.
             */
            function getMessageFromDB( $msg ) {
                    global $wgContLang, $wgLang;
                    if ( $wgContLang->getCode() == $this->getCode() ) {
                            # Content language
                            return wfMsgForContent( $msg );
                    } elseif ( $wgLang->getCode() == $this->getCode() ) {
                            # User language
                            return wfMsg( $msg );
                    } else {
                            # Neither, get from localisation
                            return $this->getMessage( $msg );
                    }
            }

            function getLanguageName( $code ) {
                    global $wgLanguageNames;
                    if ( ! array_key_exists( $code, $wgLanguageNames ) ) {
                            return '';
                    }
                    return $wgLanguageNames[$code];
            }

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

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

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

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

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

            /**
             * Used by date() and time() to adjust the time output.
             * @public
             * @param int   $ts the time in date('YmdHis') format
             * @param mixed $tz adjust the time by this amount (default false,
             *                  mean we get user timecorrection setting)
             * @return int
             */
            function userAdjust( $ts, $tz = false ) {
                    global $wgUser, $wgLocalTZoffset;

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

                    # minutes and hours differences:
                    $minDiff = 0;
                    $hrDiff  = 0;

                    if ( $tz === '' ) {
                            # Global offset in minutes.
                            if( isset($wgLocalTZoffset) ) {
                                    $hrDiff = $wgLocalTZoffset % 60;
                                    $minDiff = $wgLocalTZoffset - ($hrDiff * 60);
                            }
                    } elseif ( strpos( $tz, ':' ) !== false ) {
                            $tzArray = explode( ':', $tz );
                            $hrDiff = intval($tzArray[0]);
                            $minDiff = intval($hrDiff < 0 ? -$tzArray[1] : $tzArray[1]);
                    } else {
                            $hrDiff = intval( $tz );
                    }

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

                    # Generate an adjusted date
                    $t = mktime( (
                      (int)substr( $ts, 8, 2) ) + $hrDiff, # 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
                    return date( 'YmdHis', $t );
            }

            /**
             * This is a workalike of PHP's date() function, but with better
             * internationalisation, a reduced set of format characters, and a better
             * escaping format.
             *
             * Supported format characters are dDjlNwzWFmMntLYyaAgGhHiscrU. See the
             * PHP manual for definitions. There are a number of extensions, which
             * start with "x":
             *
             *    xn   Do not translate digits of the next numeric format character
             *    xN   Toggle raw digit (xn) flag, stays set until explicitly unset
             *    xr   Use roman numerals for the next numeric format character
             *    xx   Literal x
             *    xg   Genitive month name
             *
             * Characters enclosed in double quotes will be considered literal (with
             * the quotes themselves removed). Unmatched quotes will be considered
             * literal quotes. Example:
             *
             * "The month is" F       => The month is January
             * i's"                   => 20'11"
             *
             * Backslash escaping is also supported.
             *
             * @param string $format
             * @param string $ts 14-character timestamp
             *      YYYYMMDDHHMMSS
             *      01234567890123
             */
            function sprintfDate( $format, $ts ) {
                    $s = '';
                    $raw = false;
                    $roman = false;
                    $unix = false;
                    $rawToggle = false;
                    for ( $p = 0; $p < strlen( $format ); $p++ ) {
                            $num = false;
                            $code = $format[$p];
                            if ( $code == 'x' && $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 'xg':
                                            $s .= $this->getMonthNameGen( substr( $ts, 4, 2 ) );
                                            break;
                                    case 'd':
                                            $num = substr( $ts, 6, 2 );
                                            break;
                                    case 'D':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $s .= $this->getWeekdayAbbreviation( date( 'w', $unix ) + 1 );
                                            break;
                                    case 'j':
                                            $num = intval( substr( $ts, 6, 2 ) );
                                            break;
                                    case 'l':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $s .= $this->getWeekdayName( date( 'w', $unix ) + 1 );
                                            break;
                                    case 'N':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $w = date( 'w', $unix );
                                            $num = $w ? $w : 7;
                                            break;
                                    case 'w':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $num = date( 'w', $unix );
                                            break;
                                    case 'z':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $num = date( 'z', $unix );
                                            break;
                                    case 'W':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $num = date( 'W', $unix );
                                            break;
                                    case 'F':
                                            $s .= $this->getMonthName( substr( $ts, 4, 2 ) );
                                            break;
                                    case 'm':
                                            $num = substr( $ts, 4, 2 );
                                            break;
                                    case 'M':
                                            $s .= $this->getMonthAbbreviation( substr( $ts, 4, 2 ) );
                                            break;
                                    case 'n':
                                            $num = intval( substr( $ts, 4, 2 ) );
                                            break;
                                    case 't':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $num = date( 't', $unix );
                                            break;
                                    case 'L':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $num = date( 'L', $unix );
                                            break;
                                    case 'Y':
                                            $num = substr( $ts, 0, 4 );
                                            break;
                                    case 'y':
                                            $num = substr( $ts, 2, 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 .= date( 'c', $unix );
                                            break;
                                    case 'r':
                                            if ( !$unix ) $unix = wfTimestamp( TS_UNIX, $ts );
                                            $s .= date( '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;
                                    } else {
                                            $s .= $this->formatNum( $num, true );
                                    }
                                    $num = false;
                            }
                    }
                    return $s;
            }

            /**
             * Roman number formatting up to 3000
             */
            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][floor($num / $pow10)];
                            }
                            $num = $num % $pow10;
                    }
                    return $s;
            }

            /**
             * This is meant to be used by time(), date(), and timeanddate() to get
             * the date preference they're supposed to use, it should be used in
             * all children.
             *
             *<code>
             * function timeanddate([...], $format = true) {
             *      $datePreference = $this->dateFormat($format);
             * [...]
             * }
             *</code>
             *
             * @param mixed $usePrefs: if true, the user's preference is used
             *                         if false, the site/language default is used
             *                         if int/string, assumed to be a format.
             * @return string
             */
            function dateFormat( $usePrefs = true ) {
                    global $wgUser;

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

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

                    return $datePreference;
            }

            /**
             * @public
             * @param mixed  $ts the time format which needs to be turned into a
             *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
             * @param bool   $adj whether to adjust the time output according to the
             *               user configured offset ($timecorrection)
             * @param mixed  $format true to use user's date format preference
             * @param string $timecorrection the time offset as returned by
             *               validateTimeZone() in Special:Preferences
             * @return string
             */
            function date( $ts, $adj = false, $format = true, $timecorrection = false ) {
                    $this->load();
                    if ( $adj ) {
                            $ts = $this->userAdjust( $ts, $timecorrection );
                    }

                    $pref = $this->dateFormat( $format );
                    if( $pref == 'default' || !isset( $this->dateFormats["$pref date"] ) ) {
                            $pref = $this->defaultDateFormat;
                    }
                    return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
            }

            /**
            * @public
            * @param mixed  $ts the time format which needs to be turned into a
            *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
            * @param bool   $adj whether to adjust the time output according to the
            *               user configured offset ($timecorrection)
            * @param mixed  $format true to use user's date format preference
            * @param string $timecorrection the time offset as returned by
            *               validateTimeZone() in Special:Preferences
            * @return string
            */
            function time( $ts, $adj = false, $format = true, $timecorrection = false ) {
                    $this->load();
                    if ( $adj ) {
                            $ts = $this->userAdjust( $ts, $timecorrection );
                    }

                    $pref = $this->dateFormat( $format );
                    if( $pref == 'default' || !isset( $this->dateFormats["$pref time"] ) ) {
                            $pref = $this->defaultDateFormat;
                    }
                    return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
            }

            /**
            * @public
            * @param mixed  $ts the time format which needs to be turned into a
            *               date('YmdHis') format with wfTimestamp(TS_MW,$ts)
            * @param bool   $adj whether to adjust the time output according to the
            *               user configured offset ($timecorrection)

            * @param mixed  $format what format to return, if it's false output the
            *               default one (default true)
            * @param string $timecorrection the time offset as returned by
            *               validateTimeZone() in Special:Preferences
            * @return string
            */
            function timeanddate( $ts, $adj = false, $format = true, $timecorrection = false) {
                    $this->load();

                    $ts = wfTimestamp( TS_MW, $ts );

                    if ( $adj ) {
                            $ts = $this->userAdjust( $ts, $timecorrection );
                    }

                    $pref = $this->dateFormat( $format );
                    if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
                            $pref = $this->defaultDateFormat;
                    }

                    return $this->sprintfDate( $this->dateFormats["$pref both"], $ts );
            }

            function getMessage( $key ) {
                    $this->load();
                    return isset( $this->messages[$key] ) ? $this->messages[$key] : null;
            }

            function getAllMessages() {
                    $this->load();
                    return $this->messages;
            }

            function iconv( $in, $out, $string ) {
                    # For most languages, this is a wrapper for iconv
                    return iconv( $in, $out . '//IGNORE', $string );
            }

            // 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 ) {
                    return self::uc( $str, true );
            }

            function uc( $str, $first = false ) {
                    if ( function_exists( 'mb_strtoupper' ) ) {
                            if ( $first ) {
                                    if ( self::isMultibyte( $str ) ) {
                                            return mb_strtoupper( mb_substr( $str, 0, 1 ) ) . mb_substr( $str, 1 );
                                    } else {
                                            return ucfirst( $str );
                                    }
                            } else {
                                    return self::isMultibyte( $str ) ? mb_strtoupper( $str ) : strtoupper( $str );
                            }
                    } else {
                            if ( self::isMultibyte( $str ) ) {
                                    list( $wikiUpperChars ) = $this->getCaseMaps();
                                    $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 ) {
                    return self::lc( $str, true );
            }

            function lc( $str, $first = false ) {
                    if ( function_exists( 'mb_strtolower' ) )
                            if ( $first )
                                    if ( self::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 self::isMultibyte( $str ) ? mb_strtolower( $str ) : strtolower( $str );
                    else
                            if ( self::isMultibyte( $str ) ) {
                                    list( , $wikiLowerChars ) = self::getCaseMaps();
                                    $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 ( self::isMultibyte( $str ) ) {
                            $str = self::lc($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 ) );
            }

      # capitalize words at word breaks
            function ucwordbreaks($str){
                    if (self::isMultibyte( $str ) ) {
                            $str = self::lc($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 );
            }

            /**
             * Return a case-folded representation of $s
             *
             * This is a representation such that caseFold($s1)==caseFold($s2) if $s1
             * and $s2 are the same except for the case of their characters. It is not
             * necessary for the value returned to make sense when displayed.
             *
             * Do *not* perform any other normalisation in this function. If a caller
             * uses this function when it should be using a more general normalisation
             * function, then fix the caller.
             */
            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() {
                    $this->load();
                    return $this->fallback8bitEncoding;
            }

            /**
             * Some languages have special punctuation to strip out
             * or characters which need to be converted for MySQL's
             * indexing to grok it correctly. Make such changes here.
             *
             * @param string $in
             * @return string
             */
            function stripForSearch( $string ) {
                    global $wgDBtype;
                    if ( $wgDBtype != 'mysql' ) {
                            return $string;
                    }

                    # MySQL fulltext index doesn't grok utf-8, so we
                    # need to fold cases and convert to hex

                    wfProfileIn( __METHOD__ );
                    if( function_exists( 'mb_strtolower' ) ) {
                            $out = preg_replace(
                                    "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
                                    "'U8' . bin2hex( \"$1\" )",
                                    mb_strtolower( $string ) );
                    } else {
                            list( , $wikiLowerChars ) = self::getCaseMaps();
                            $out = preg_replace(
                                    "/([\\xc0-\\xff][\\x80-\\xbf]*)/e",
                                    "'U8' . bin2hex( strtr( \"\$1\", \$wikiLowerChars ) )",
                                    $string );
                    }
                    wfProfileOut( __METHOD__ );
                    return $out;
            }

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

            /**
             * Get the first character of a string.
             *
             * @param string $s
             * @return string
             */
            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);

                    return isset( $matches[1] ) ? $matches[1] : "";
            }

            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.
                    # Note that if wgOutputEncoding is different from
                    # wgInputEncoding, this text will be further converted
                    # to wgOutputEncoding.
                    global $wgEditEncoding;
                    if( $wgEditEncoding == '' or
                      $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 );
                    }
            }

            /**
             * For right-to-left language support
             *
             * @return bool
             */
            function isRTL() {
                    $this->load();
                    return $this->rtl;
            }

            /**
             * A hidden direction mark (LRM or RLM), depending on the language direction
             *
             * @return string
             */
            function getDirMark() {
                    return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
            }

            /**
             * An arrow, depending on the language direction
             *
             * @return string
             */
            function getArrow() {
                    return $this->isRTL() ? '←' : '→';
            }

            /**
             * To allow "foo[[bar]]" to extend the link over the whole word "foobar"
             *
             * @return bool
             */
            function linkPrefixExtension() {
                    $this->load();
                    return $this->linkPrefixExtension;
            }

            function &getMagicWords() {
                    $this->load();
                    return $this->magicWords;
            }

            # Fill a MagicWord object with data from here
            function getMagic( &$mw ) {
                    if ( !isset( $this->mMagicExtensions ) ) {
                            $this->mMagicExtensions = array();
                            wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
                    }
                    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 {
                                    # Fall back to English if local list is incomplete
                                    $magicWords =& Language::getMagicWords();
                                    $rawEntry = $magicWords[$mw->mId];
                            }
                    }

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

            /**
             * Get special page names, as an associative array
             *   case folded alias => real name
             */
            function getSpecialPageAliases() {
                    $this->load();
                    if ( !isset( $this->mExtendedSpecialPageAliases ) ) {
                            $this->mExtendedSpecialPageAliases = $this->specialPageAliases;
                            wfRunHooks( 'LangugeGetSpecialPageAliases',
                                    array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
                    }
                    return $this->mExtendedSpecialPageAliases;
            }

            /**
             * Italic is unsuitable for some languages
             *
             * @public
             *
             * @param string $text The text to be emphasized.
             * @return string
             */
            function emphasize( $text ) {
                    return "<em>$text</em>";
            }

             /**
             * Normally we output all numbers in plain en_US style, that is
             * 293,291.235 for twohundredninetythreethousand-twohundredninetyone
             * point twohundredthirtyfive. However this is not sutable for all
             * languages, some such as Pakaran want ੨੯੩,੨੯੫.੨੩੫ and others such as
             * Icelandic just want to use commas instead of dots, and dots instead
             * of commas like "293.291,235".
             *
             * An example of this function being called:
             * <code>
             * wfMsg( 'message', $wgLang->formatNum( $num ) )
             * </code>
             *
             * See LanguageGu.php for the Gujarati implementation and
             * LanguageIs.php for the , => . and . => , implementation.
             *
             * @todo check if it's viable to use localeconv() for the decimal
             *       seperator thing.
             * @public
             * @param mixed $number the string to be formatted, should be an integer or
             *        a floating point number.
             * @param bool $nocommafy Set to true for special numbers like dates
             * @return string
             */
            function formatNum( $number, $nocommafy = false ) {
                    global $wgTranslateNumerals;
                    if (!$nocommafy) {
                            $number = $this->commafy($number);
                            $s = $this->separatorTransformTable();
                            if (!is_null($s)) { $number = strtr($number, $s); }
                    }

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

                    return $number;
            }

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

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

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

            /**
             * Adds commas to a given number
             *
             * @param mixed $_
             * @return string
             */
            function commafy($_) {
                    return strrev((string)preg_replace('/(\d{3})(?=\d)(?!\d*\.)/','$1,',strrev($_)));
            }

            function digitTransformTable() {
                    $this->load();
                    return $this->digitTransformTable;
            }

            function separatorTransformTable() {
                    $this->load();
                    return $this->separatorTransformTable;
            }

            /**
             * For the credit list in includes/Credits.php (action=credits)
             *
             * @param array $l
             * @return string
             */
            function listToText( $l ) {
                    $s = '';
                    $m = count($l) - 1;
                    for ($i = $m; $i >= 0; $i--) {
                            if ($i == $m) {
                                    $s = $l[$i];
                            } else if ($i == $m - 1) {
                                    $s = $l[$i] . ' ' . $this->getMessageFromDB( 'and' ) . ' ' . $s;
                            } else {
                                    $s = $l[$i] . ', ' . $s;
                            }
                    }
                    return $s;
            }

            # Crop a string from the beginning or end to a certain number of bytes.
            # (Bytes are used because our storage has limited byte lengths for some
            # columns in the database.) Multibyte charsets will need to make sure that
            # only whole characters are included!
            #
            # $length does not include the optional ellipsis.
            # If $length is negative, snip from the beginning
            function truncate( $string, $length, $ellipsis = "" ) {
                    if( $length == 0 ) {
                            return $ellipsis;
                    }
                    if ( strlen( $string ) <= abs( $length ) ) {
                            return $string;
                    }
                    if( $length > 0 ) {
                            $string = substr( $string, 0, $length );
                            $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 . $ellipsis;
                    } else {
                            $string = substr( $string, $length );
                            $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 $ellipsis . $string;
                    }
            }

            /**
             * Grammatical transformations, needed for inflected languages
             * Invoked by putting {{grammar:case|word}} in a message
             *
             * @param string $word
             * @param string $case
             * @return string
             */
            function convertGrammar( $word, $case ) {
                    global $wgGrammarForms;
                    if ( isset($wgGrammarForms['en'][$case][$word]) ) {
                            return $wgGrammarForms['en'][$case][$word];
                    }
                    return $word;
            }

            /**
             * Plural form transformations, needed for some languages.
             * For example, where are 3 form of plural in Russian and Polish,
             * depending on "count mod 10". See [[w:Plural]]
             * For English it is pretty simple.
             *
             * Invoked by putting {{plural:count|wordform1|wordform2}}
             * or {{plural:count|wordform1|wordform2|wordform3}}
             *
             * Example: {{plural:{{NUMBEROFARTICLES}}|article|articles}}
             *
             * @param integer $count
             * @param string $wordform1
             * @param string $wordform2
             * @param string $wordform3 (optional)
             * @param string $wordform4 (optional)
             * @param string $wordform5 (optional)
             * @return string
             */
            function convertPlural( $count, $w1, $w2, $w3, $w4, $w5) {
                    return ( $count == '1' || $count == '-1' ) ? $w1 : $w2;
            }

            /**
             * For translaing of expiry times
             * @param string The validated block time in English
             * @param $forContent, avoid html?
             * @return Somehow translated block time
             * @see LanguageFi.php for example implementation
             */
            function translateBlockExpiry( $str, $forContent=false ) {

                    $scBlockExpiryOptions = $this->getMessageFromDB( 'ipboptions' );

                    if ( $scBlockExpiryOptions == '-') {
                            return $str;
                    }

                    foreach (explode(',', $scBlockExpiryOptions) as $option) {
                            if ( strpos($option, ":") === false )
                                    continue;
                            list($show, $value) = explode(":", $option);
                            if ( strcmp ( $str, $value) == 0 ) {
                                    if ( $forContent )
                                            return htmlspecialchars($str) . htmlspecialchars( trim( $show ) );
                                    else
                                            return '<span title="' . htmlspecialchars($str). '">' . htmlspecialchars( trim( $show ) ) . '</span>';
                            }
                    }

                    return $str;
            }

            /**
             * languages like Chinese need to be segmented in order for the diff
             * to be of any use
             *
             * @param string $text
             * @return string
             */
            function segmentForDiff( $text ) {
                    return $text;
            }

            /**
             * and unsegment to show the result
             *
             * @param string $text
             * @return string
             */
            function unsegmentForDiff( $text ) {
                    return $text;
            }

            # convert text to different variants of a language.
            function convert( $text, $isTitle = false) {
                    return $this->mConverter->convert($text, $isTitle);
            }

            # Convert text from within Parser
            function parserConvert( $text, &$parser ) {
                    return $this->mConverter->parserConvert( $text, $parser );
            }

            # Check if this is a language with variants
            function hasVariants(){
                    return sizeof($this->getVariants())>1;
            }

            # Put custom tags (e.g. -{ }-) around math to prevent conversion
            function armourMath($text){
                    return $this->mConverter->armourMath($text);
            }

            /**
             * Perform output conversion on a string, and encode for safe HTML output.
             * @param string $text
             * @param bool $isTitle -- wtf?
             * @return string
             * @todo this should get integrated somewhere sane
             */
            function convertHtml( $text, $isTitle = false ) {
                    return htmlspecialchars( $this->convert( $text, $isTitle ) );
            }

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

            /**
             * get the list of variants supported by this langauge
             * see sample implementation in LanguageZh.php
             *
             * @return array an array of language codes
             */
            function getVariants() {
                    return $this->mConverter->getVariants();
            }

            function getPreferredVariant( $fromUser = true ) {
                    return $this->mConverter->getPreferredVariant( $fromUser );
            }

            /**
             * if a language supports multiple variants, it is
             * possible that non-existing link in one variant
             * actually exists in another variant. this function
             * tries to find it. See e.g. LanguageZh.php
             *
             * @param string $link the name of the link
             * @param mixed $nt the title object of the link
             * @return null the input parameters may be modified upon return
             */
            function findVariantLink( &$link, &$nt ) {
                    $this->mConverter->findVariantLink($link, $nt);
            }

            /**
             * If a language supports multiple variants, converts text
             * into an array of all possible variants of the text:
             *  'variant' => text in that variant
             */

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

            /**
             * returns language specific options used by User::getPageRenderHash()
             * for example, the preferred language variant
             *
             * @return string
             * @public
             */
            function getExtraHashOptions() {
                    return $this->mConverter->getExtraHashOptions();
            }

            /**
             * for languages that support multiple variants, the title of an
             * article may be displayed differently in different variants. this
             * function returns the apporiate title defined in the body of the article.
             *
             * @return string
             */
            function getParsedTitle() {
                    return $this->mConverter->getParsedTitle();
            }

            /**
             * Enclose a string with the "no conversion" tag. This is used by
             * various functions in the Parser
             *
             * @param string $text text to be tagged for no conversion
             * @return string the tagged text
            */
            function markNoConversion( $text, $noParse=false ) {
                    return $this->mConverter->markNoConversion( $text, $noParse );
            }

            /**
             * A regular expression to match legal word-trailing characters
             * which should be merged onto a link of the form [[foo]]bar.
             *
             * @return string
             * @public
             */
            function linkTrail() {
                    $this->load();
                    return $this->linkTrail;
            }

            function getLangObj() {
                    return $this;
            }

            /**
             * Get the RFC 3066 code for this language object
             */
            function getCode() {
                    return $this->mCode;
            }

            function setCode( $code ) {
                    $this->mCode = $code;
            }

            static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
                    return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
            }

            static function getMessagesFileName( $code ) {
                    global $IP;
                    return self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
            }

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

            static function getLocalisationArray( $code, $disableCache = false ) {
                    self::loadLocalisation( $code, $disableCache );
                    return self::$mLocalisationCache[$code];
            }

            /**
             * Load localisation data for a given code into the static cache
             *
             * @return array Dependencies, map of filenames to mtimes
             */
            static function loadLocalisation( $code, $disableCache = false ) {
                    static $recursionGuard = array();
                    global $wgMemc;

                    if ( !$code ) {
                            throw new MWException( "Invalid language code requested" );
                    }

                    if ( !$disableCache ) {
                            # Try the per-process cache
                            if ( isset( self::$mLocalisationCache[$code] ) ) {
                                    return self::$mLocalisationCache[$code]['deps'];
                            }

                            wfProfileIn( __METHOD__ );

                            # Try the serialized directory
                            $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
                            if ( $cache ) {
                                    self::$mLocalisationCache[$code] = $cache;
                                    wfDebug( "Language::loadLocalisation(): got localisation for $code from precompiled data file\n" );
                                    wfProfileOut( __METHOD__ );
                                    return self::$mLocalisationCache[$code]['deps'];
                            }

                            # Try the global cache
                            $memcKey = wfMemcKey('localisation', $code );
                            $cache = $wgMemc->get( $memcKey );
                            if ( $cache ) {
                                    # Check file modification times
                                    foreach ( $cache['deps'] as $file => $mtime ) {
                                            if ( !file_exists( $file ) || filemtime( $file ) > $mtime ) {
                                                    break;
                                            }
                                    }
                                    if ( self::isLocalisationOutOfDate( $cache ) ) {
                                            $wgMemc->delete( $memcKey );
                                            $cache = false;
                                            wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired due to update of $file\n" );
                                    } else {
                                            self::$mLocalisationCache[$code] = $cache;
                                            wfDebug( "Language::loadLocalisation(): got localisation for $code from cache\n" );
                                            wfProfileOut( __METHOD__ );
                                            return $cache['deps'];
                                    }
                            }
                    } else {
                            wfProfileIn( __METHOD__ );
                    }

                    # Default fallback, may be overridden when the messages file is included
                    if ( $code != 'en' ) {
                            $fallback = 'en';
                    } else {
                            $fallback = false;
                    }

                    # Load the primary localisation from the source file
                    $filename = self::getMessagesFileName( $code );
                    if ( !file_exists( $filename ) ) {
                            wfDebug( "Language::loadLocalisation(): no localisation file for $code, using implicit fallback to en\n" );
                            $cache = array();
                            $deps = array();
                    } else {
                            $deps = array( $filename => filemtime( $filename ) );
                            require( $filename );
                            $cache = compact( self::$mLocalisationKeys );
                            wfDebug( "Language::loadLocalisation(): got localisation for $code from source\n" );
                    }

                    if ( !empty( $fallback ) ) {
                            # Load the fallback localisation, with a circular reference guard
                            if ( isset( $recursionGuard[$code] ) ) {
                                    throw new MWException( "Error: Circular fallback reference in language code $code" );
                            }
                            $recursionGuard[$code] = true;
                            $newDeps = self::loadLocalisation( $fallback, $disableCache );
                            unset( $recursionGuard[$code] );

                            $secondary = self::$mLocalisationCache[$fallback];
                            $deps = array_merge( $deps, $newDeps );

                            # Merge the fallback localisation with the current localisation
                            foreach ( self::$mLocalisationKeys as $key ) {
                                    if ( isset( $cache[$key] ) ) {
                                            if ( isset( $secondary[$key] ) ) {
                                                    if ( in_array( $key, self::$mMergeableMapKeys ) ) {
                                                            $cache[$key] = $cache[$key] + $secondary[$key];
                                                    } elseif ( in_array( $key, self::$mMergeableListKeys ) ) {
                                                            $cache[$key] = array_merge( $secondary[$key], $cache[$key] );
                                                    } elseif ( in_array( $key, self::$mMergeableAliasListKeys ) ) {
                                                            $cache[$key] = array_merge_recursive( $cache[$key], $secondary[$key] );
                                                    }
                                            }
                                    } else {
                                            $cache[$key] = $secondary[$key];
                                    }
                            }

                            # Merge bookstore lists if requested
                            if ( !empty( $cache['bookstoreList']['inherit'] ) ) {
                                    $cache['bookstoreList'] = array_merge( $cache['bookstoreList'], $secondary['bookstoreList'] );
                            }
                            if ( isset( $cache['bookstoreList']['inherit'] ) ) {
                                    unset( $cache['bookstoreList']['inherit'] );
                            }
                    }

                    # Add dependencies to the cache entry
                    $cache['deps'] = $deps;

                    # Replace spaces with underscores in namespace names
                    $cache['namespaceNames'] = str_replace( ' ', '_', $cache['namespaceNames'] );

                    # Save to both caches
                    self::$mLocalisationCache[$code] = $cache;
                    if ( !$disableCache ) {
                            $wgMemc->set( $memcKey, $cache );
                    }

                    wfProfileOut( __METHOD__ );
                    return $deps;
            }

            /**
             * Test if a given localisation cache is out of date with respect to the
             * source Messages files. This is done automatically for the global cache
             * in $wgMemc, but is only done on certain occasions for the serialized
             * data file.
             *
             * @param $cache mixed Either a language code or a cache array
             */
            static function isLocalisationOutOfDate( $cache ) {
                    if ( !is_array( $cache ) ) {
                            self::loadLocalisation( $cache );
                            $cache = self::$mLocalisationCache[$cache];
                    }
                    $expired = false;
                    foreach ( $cache['deps'] as $file => $mtime ) {
                            if ( !file_exists( $file ) || filemtime( $file ) > $mtime ) {
                                    $expired = true;
                                    break;
                            }
                    }
                    return $expired;
            }

            /**
             * Get the fallback for a given language
             */
            static function getFallbackFor( $code ) {
                    self::loadLocalisation( $code );
                    return self::$mLocalisationCache[$code]['fallback'];
            }

            /**
             * Get all messages for a given language
             */
            static function getMessagesFor( $code ) {
                    self::loadLocalisation( $code );
                    return self::$mLocalisationCache[$code]['messages'];
            }

            /**
             * Get a message for a given language
             */
            static function getMessageFor( $key, $code ) {
                    self::loadLocalisation( $code );
                    return isset( self::$mLocalisationCache[$code]['messages'][$key] ) ? self::$mLocalisationCache[$code]['messages'][$key] : null;
            }

            /**
             * Load localisation data for this object
             */
            function load() {
                    if ( !$this->mLoaded ) {
                            self::loadLocalisation( $this->getCode() );
                            $cache =& self::$mLocalisationCache[$this->getCode()];
                            foreach ( self::$mLocalisationKeys as $key ) {
                                    $this->$key = $cache[$key];
                            }
                            $this->mLoaded = true;

                            $this->fixUpSettings();
                    }
            }

            /**
             * Do any necessary post-cache-load settings adjustment
             */
            function fixUpSettings() {
                    global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk,
                            $wgNamespaceAliases, $wgAmericanDates;
                    wfProfileIn( __METHOD__ );
                    if ( $wgExtraNamespaces ) {
                            $this->namespaceNames = $wgExtraNamespaces + $this->namespaceNames;
                    }

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

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

                    # 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->namespaceNames as $index => $name ) {
                            $this->mNamespaceIds[$this->lc($name)] = $index;
                    }
                    if ( $this->namespaceAliases ) {
                            foreach ( $this->namespaceAliases as $name => $index ) {
                                    $this->mNamespaceIds[$this->lc($name)] = $index;
                            }
                    }
                    if ( $wgNamespaceAliases ) {
                            foreach ( $wgNamespaceAliases as $name => $index ) {
                                    $this->mNamespaceIds[$this->lc($name)] = $index;
                            }
                    }

                    if ( $this->defaultDateFormat == 'dmy or mdy' ) {
                            $this->defaultDateFormat = $wgAmericanDates ? 'mdy' : 'dmy';
                    }
                    wfProfileOut( __METHOD__ );
            }

            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" );
                    }
                    extract( $arr );
                    wfProfileOut( __METHOD__ );
                    return array( $wikiUpperChars, $wikiLowerChars );
            }
    }

    ?>

由 "http://zh-yue.wikipedia.org../../../%E7%94%A8/%E6%88%B6/%E4%BB%8B/Wikipedia%7E%E7%94%A8%E6%88%B6%E4%BB%8B%E9%9D%A2%E7%BF%BB%E8%AD%AF_Language.php_192f.html" 接收

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