跳转到内容

维基百科:用戶介面翻譯/Language.php

本页使用了标题或全文手工转换
维基百科,自由的百科全书

这是本页的一个历史版本,由Alexsh留言 | 贡献2007年2月2日 (五) 12:53 (up to revision 19505)编辑。这可能和当前版本存在着巨大的差异。


<?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( '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',
        'quickbarSettings', '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() {
        $this->load();
        return $this->quickbarSettings;
    }

    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();
        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, $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
     * @return Somehow translated block time
     * @see LanguageFi.php for example implementation
     */
    function translateBlockExpiry( $str ) {

        $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, $value) == 0 )
                return '<span title="' . htmlspecialchars($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 );
    }
}

?>