follow up r61911 - put periods in where appropriate
[lhc/web/wiklou.git] / languages / Language.php
index 3fe2cf2..21ad57a 100644 (file)
@@ -35,10 +35,11 @@ if( function_exists( 'mb_strtoupper' ) ) {
 class FakeConverter {
        var $mLang;
        function FakeConverter($langobj) {$this->mLang = $langobj;}
+       function autoConvertToAllVariants($text) {return $text;}
        function convert($t, $i) {return $t;}
-       function parserConvert($t, $p) {return $t;}
        function getVariants() { return array( $this->mLang->getCode() ); }
-       function getPreferredVariant() {return $this->mLang->getCode(); }
+       function getPreferredVariant() { return $this->mLang->getCode(); }
+       function getConvRuleTitle() { return false; }
        function findVariantLink(&$l, &$n, $ignoreOtherCond = false) {}
        function getExtraHashOptions() {return '';}
        function getParsedTitle() {return '';}
@@ -46,7 +47,6 @@ class FakeConverter {
        function convertCategoryKey( $key ) {return $key; }
        function convertLinkToAllVariants($text){ return array( $this->mLang->getCode() => $text); }
        function armourMath($text){ return $text; }
-       function groupConvert($group) {return '';}
 }
 
 /**
@@ -57,24 +57,16 @@ class Language {
        var $mConverter, $mVariants, $mCode, $mLoaded = false;
        var $mMagicExtensions = array(), $mMagicHookDone = false;
 
-       static public $mLocalisationKeys = array(
-               'fallback', 'namespaceNames', 'mathNames', 'bookstoreList',
-               'magicWords', 'messages', 'rtl', 'digitTransformTable',
-               'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
-               'defaultUserOptionOverrides', 'linkTrail', 'namespaceAliases',
-               'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
-               'defaultDateFormat', 'extraUserToggles', 'specialPageAliases',
-               'imageFiles'
-       );
-
-       static public $mMergeableMapKeys = array( 'messages', 'namespaceNames', 'mathNames',
-               'dateFormats', 'defaultUserOptionOverrides', 'magicWords', 'imageFiles' );
-
-       static public $mMergeableListKeys = array( 'extraUserToggles' );
+       var $mNamespaceIds, $namespaceNames, $namespaceAliases;
+       var $dateFormatStrings = array();
+       var $mExtendedSpecialPageAliases;
 
-       static public $mMergeableAliasListKeys = array( 'specialPageAliases' );
+       /**
+        * ReplacementArray object caches
+        */
+       var $transformData = array();
 
-       static public $mLocalisationCache = array();
+       static public $dataCache;
        static public $mLangObjCache = array();
 
        static public $mWeekdayMsgs = array(
@@ -123,7 +115,7 @@ class Language {
                'hebrew-calendar-m10-gen', 'hebrew-calendar-m11-gen', 'hebrew-calendar-m12-gen',
                'hebrew-calendar-m6a-gen', 'hebrew-calendar-m6b-gen'
        );
-       
+
        static public $mHijriCalendarMonthMsgs = array(
                'hijri-calendar-m1', 'hijri-calendar-m2', 'hijri-calendar-m3',
                'hijri-calendar-m4', 'hijri-calendar-m5', 'hijri-calendar-m6',
@@ -166,7 +158,7 @@ class Language {
 
                if ( $recursionLevel > 5 ) {
                        throw new MWException( "Language fallback loop detected when creating class $class\n" );
-               }       
+               }
 
                if( ! class_exists( $class ) ) {
                        $fallback = Language::getFallbackFor( $code );
@@ -180,6 +172,18 @@ class Language {
                return $lang;
        }
 
+       /**
+        * Get the LocalisationCache instance
+        */
+       public static function getLocalisationCache() {
+               if ( is_null( self::$dataCache ) ) {
+                       global $wgLocalisationCacheConf;
+                       $class = $wgLocalisationCacheConf['class'];
+                       self::$dataCache = new $class( $wgLocalisationCacheConf );
+               }
+               return self::$dataCache;
+       }
+
        function __construct() {
                $this->mConverter = new FakeConverter($this);
                // Set the code to the name of the descendant
@@ -188,6 +192,7 @@ class Language {
                } else {
                        $this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
                }
+               self::getLocalisationCache();
        }
 
        /**
@@ -215,7 +220,11 @@ class Language {
        }
 
        function getFallbackLanguageCode() {
-               return self::getFallbackFor( $this->mCode );
+               if ( $this->mCode === 'en' ) {
+                       return false;
+               } else {
+                       return self::$dataCache->getItem( $this->mCode, 'fallback' );
+               }
        }
 
        /**
@@ -223,15 +232,34 @@ class Language {
         * @return array
         */
        function getBookstoreList() {
-               $this->load();
-               return $this->bookstoreList;
+               return self::$dataCache->getItem( $this->mCode, 'bookstoreList' );
        }
 
        /**
         * @return array
         */
        function getNamespaces() {
-               $this->load();
+               if ( is_null( $this->namespaceNames ) ) {
+                       global $wgExtraNamespaces, $wgMetaNamespace, $wgMetaNamespaceTalk;
+
+                       $this->namespaceNames = self::$dataCache->getItem( $this->mCode, 'namespaceNames' );
+                       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];
+                               $this->namespaceNames[NS_PROJECT_TALK] =
+                                       $this->fixVariableInNamespace( $talk );
+                       }
+
+                       # The above mixing may leave namespaces out of canonical order.
+                       # Re-order by namespace ID number...
+                       ksort( $this->namespaceNames );
+               }
                return $this->namespaceNames;
        }
 
@@ -287,11 +315,54 @@ class Language {
         * @return mixed An integer if $text is a valid value otherwise false
         */
        function getLocalNsIndex( $text ) {
-               $this->load();
                $lctext = $this->lc($text);
-               return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
+               $ids = $this->getNamespaceIds();
+               return isset( $ids[$lctext] ) ? $ids[$lctext] : false;
+       }
+
+       function getNamespaceAliases() {
+               if ( is_null( $this->namespaceAliases ) ) {
+                       $aliases = self::$dataCache->getItem( $this->mCode, 'namespaceAliases' );
+                       if ( !$aliases ) {
+                               $aliases = array();
+                       } else {
+                               foreach ( $aliases as $name => $index ) {
+                                       if ( $index === NS_PROJECT_TALK ) {
+                                               unset( $aliases[$name] );
+                                               $name = $this->fixVariableInNamespace( $name );
+                                               $aliases[$name] = $index;
+                                       }
+                               }
+                       }
+                       $this->namespaceAliases = $aliases;
+               }
+               return $this->namespaceAliases;
+       }
+
+       function getNamespaceIds() {
+               if ( is_null( $this->mNamespaceIds ) ) {
+                       global $wgNamespaceAliases;
+                       # Put namespace names and aliases into a hashtable.
+                       # If this is too slow, then we should arrange it so that it is done
+                       # before caching. The catch is that at pre-cache time, the above
+                       # class-specific fixup hasn't been done.
+                       $this->mNamespaceIds = array();
+                       foreach ( $this->getNamespaces() as $index => $name ) {
+                               $this->mNamespaceIds[$this->lc($name)] = $index;
+                       }
+                       foreach ( $this->getNamespaceAliases() as $name => $index ) {
+                               $this->mNamespaceIds[$this->lc($name)] = $index;
+                       }
+                       if ( $wgNamespaceAliases ) {
+                               foreach ( $wgNamespaceAliases as $name => $index ) {
+                                       $this->mNamespaceIds[$this->lc($name)] = $index;
+                               }
+                       }
+               }
+               return $this->mNamespaceIds;
        }
 
+
        /**
         * Get a namespace key by value, case insensitive.  Canonical namespace
         * names override custom ones defined for the current language.
@@ -300,10 +371,12 @@ class Language {
         * @return mixed An integer if $text is a valid value otherwise false
         */
        function getNsIndex( $text ) {
-               $this->load();
                $lctext = $this->lc($text);
-               if( ( $ns = MWNamespace::getCanonicalIndex( $lctext ) ) !== null ) return $ns;
-               return isset( $this->mNamespaceIds[$lctext] ) ? $this->mNamespaceIds[$lctext] : false;
+               if ( ( $ns = MWNamespace::getCanonicalIndex( $lctext ) ) !== null ) {
+                       return $ns;
+               }
+               $ids = $this->getNamespaceIds();
+               return isset( $ids[$lctext] ) ? $ids[$lctext] : false;
        }
 
        /**
@@ -335,48 +408,41 @@ class Language {
        }
 
        function getMathNames() {
-               $this->load();
-               return $this->mathNames;
+               return self::$dataCache->getItem( $this->mCode, 'mathNames' );
        }
 
        function getDatePreferences() {
-               $this->load();
-               return $this->datePreferences;
+               return self::$dataCache->getItem( $this->mCode, 'datePreferences' );
        }
-       
+
        function getDateFormats() {
-               $this->load();
-               return $this->dateFormats;
+               return self::$dataCache->getItem( $this->mCode, 'dateFormats' );
        }
 
        function getDefaultDateFormat() {
-               $this->load();
-               return $this->defaultDateFormat;
+               $df = self::$dataCache->getItem( $this->mCode, 'defaultDateFormat' );
+               if ( $df === 'dmy or mdy' ) {
+                       global $wgAmericanDates;
+                       return $wgAmericanDates ? 'mdy' : 'dmy';
+               } else {
+                       return $df;
+               }
        }
 
        function getDatePreferenceMigrationMap() {
-               $this->load();
-               return $this->datePreferenceMigrationMap;
+               return self::$dataCache->getItem( $this->mCode, 'datePreferenceMigrationMap' );
        }
 
        function getImageFile( $image ) {
-               $this->load();
-               return $this->imageFiles[$image];
+               return self::$dataCache->getSubitem( $this->mCode, 'imageFiles', $image );
        }
 
        function getDefaultUserOptionOverrides() {
-               $this->load();
-               # XXX - apparently some languageas get empty arrays, didn't get to it yet -- midom
-               if (is_array($this->defaultUserOptionOverrides)) {
-                       return $this->defaultUserOptionOverrides;
-               } else {
-                       return array();
-               }
+               return self::$dataCache->getItem( $this->mCode, 'defaultUserOptionOverrides' );
        }
 
        function getExtraUserToggles() {
-               $this->load();
-               return $this->extraUserToggles;
+               return self::$dataCache->getItem( $this->mCode, 'extraUserToggles' );
        }
 
        function getUserToggle( $tog ) {
@@ -393,17 +459,14 @@ class Language {
                if ( !$customisedOnly ) {
                        return $allNames;
                }
-               
+
                global $IP;
                $names = array();
                $dir = opendir( "$IP/languages/messages" );
                while( false !== ( $file = readdir( $dir ) ) ) {
-                       $m = array();
-                       if( preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $file, $m ) ) {
-                               $code = str_replace( '_', '-', strtolower( $m[1] ) );
-                               if ( isset( $allNames[$code] ) ) {
-                                       $names[$code] = $allNames[$code];
-                               }
+                       $code = self::getCodeFromFileName( $file, 'Messages' );
+                       if ( $code && isset( $allNames[$code] ) ) {
+                               $names[$code] = $allNames[$code];
                        }
                }
                closedir( $dir );
@@ -459,11 +522,11 @@ class Language {
        function getHebrewCalendarMonthNameGen( $key ) {
                return $this->getMessageFromDB( self::$mHebrewCalendarMonthGenMsgs[$key-1] );
        }
-       
+
        function getHijriCalendarMonthName( $key ) {
                return $this->getMessageFromDB( self::$mHijriCalendarMonthMsgs[$key-1] );
        }
-       
+
        /**
         * Used by date() and time() to adjust the time output.
         *
@@ -515,7 +578,7 @@ class Language {
 
                wfSuppressWarnings(); // E_STRICT system time bitching
                # Generate an adjusted date; take advantage of the fact that mktime
-               # will normalize out-of-range values so we don't have to split $minDiff 
+               # will normalize out-of-range values so we don't have to split $minDiff
                # into hours and minutes.
                $t = mktime( (
                  (int)substr( $ts, 8, 2) ), # Hours
@@ -524,19 +587,19 @@ class Language {
                  (int)substr( $ts, 4, 2 ), # Month
                  (int)substr( $ts, 6, 2 ), # Day
                  (int)substr( $ts, 0, 4 ) ); #Year
-               
+
                $date = date( 'YmdHis', $t );
                wfRestoreWarnings();
-               
+
                return $date;
        }
 
        /**
         * This is a workalike of PHP's date() function, but with better
-        * internationalisation, a reduced set of format characters, and a better 
+        * internationalisation, a reduced set of format characters, and a better
         * escaping format.
         *
-        * Supported format characters are dDjlNwzWFmMntLoYyaAgGhHiscrU. See the 
+        * Supported format characters are dDjlNwzWFmMntLoYyaAgGhHiscrU. See the
         * PHP manual for definitions. "o" format character is supported since
         * PHP 5.1.0, previous versions return literal o.
         * There are a number of extensions, which start with "x":
@@ -567,6 +630,11 @@ class Language {
         *
         *    xkY  Y (full year) in Thai solar calendar. Months and days are
         *                       identical to the Gregorian calendar
+        *    xoY  Y (full year) in Minguo calendar or Juche year.
+        *                       Months and days are identical to the
+        *                       Gregorian calendar
+        *    xtY  Y (full year) in Japanese nengo. Months and days are
+        *                       identical to the Gregorian calendar
         *
         * Characters enclosed in double quotes will be considered literal (with
         * the quotes themselves removed). Unmatched quotes will be considered
@@ -579,7 +647,7 @@ class Language {
         *
         * Input timestamp is assumed to be pre-normalized to the desired local
         * time zone, if any.
-        * 
+        *
         * @param $format String
         * @param $ts String: 14-character timestamp
         *      YYYYMMDDHHMMSS
@@ -598,6 +666,8 @@ class Language {
                $hebrew = false;
                $hijri = false;
                $thai = false;
+               $minguo = false;
+               $tenno = false;
                for ( $p = 0; $p < strlen( $format ); $p++ ) {
                        $num = false;
                        $code = $format[$p];
@@ -605,7 +675,7 @@ class Language {
                                $code .= $format[++$p];
                        }
 
-                       if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' ) && $p < strlen( $format ) - 1 ) {
+                       if ( ( $code === 'xi' || $code == 'xj' || $code == 'xk' || $code == 'xm' || $code == 'xo' || $code == 'xt' ) && $p < strlen( $format ) - 1 ) {
                                $code .= $format[++$p];
                        }
 
@@ -749,9 +819,17 @@ class Language {
                                        $num = $hebrew[0];
                                        break;
                                case 'xkY':
-                                       if ( !$thai ) $thai = self::tsToThai( $ts );
+                                       if ( !$thai ) $thai = self::tsToYear( $ts, 'thai' );
                                        $num = $thai[0];
                                        break;
+                               case 'xoY':
+                                       if ( !$minguo ) $minguo = self::tsToYear( $ts, 'minguo' );
+                                       $num = $minguo[0];
+                                       break;
+                               case 'xtY':
+                                       if ( !$tenno ) $tenno = self::tsToYear( $ts, 'tenno' );
+                                       $num = $tenno[0];
+                                       break;
                                case 'y':
                                        $num = substr( $ts, 2, 2 );
                                        break;
@@ -771,7 +849,7 @@ class Language {
                                case 'h':
                                        $h = substr( $ts, 8, 2 );
                                        $num = sprintf( '%02d', $h % 12 ? $h % 12 : 12 );
-                                       break;                                  
+                                       break;
                                case 'H':
                                        $num = substr( $ts, 8, 2 );
                                        break;
@@ -842,11 +920,11 @@ class Language {
        private static $GREG_DAYS = array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
        private static $IRANIAN_DAYS = array( 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29 );
        /**
-        * Algorithm by Roozbeh Pournader and Mohammad Toossi to convert 
+        * Algorithm by Roozbeh Pournader and Mohammad Toossi to convert
         * Gregorian dates to Iranian dates. Originally written in C, it
         * is released under the terms of GNU Lesser General Public
         * License. Conversion to PHP was performed by Niklas Laxström.
-        * 
+        *
         * Link: http://www.farsiweb.info/jalali/jalali.c
         */
        private static function tsToIranian( $ts ) {
@@ -873,7 +951,7 @@ class Language {
 
                // Days passed in current month
                $gDayNo += $gd;
-               
+
                $jDayNo = $gDayNo - 79;
 
                $jNp = floor($jDayNo / 12053);
@@ -907,7 +985,7 @@ class Language {
                $year = substr( $ts, 0, 4 );
                $month = substr( $ts, 4, 2 );
                $day = substr( $ts, 6, 2 );
-               
+
                $zyr = $year;
                $zd=$day;
                $zm=$month;
@@ -917,15 +995,15 @@ class Language {
 
                if (($zy>1582)||(($zy==1582)&&($zm>10))||(($zy==1582)&&($zm==10)&&($zd>14)))
                        {
-       
-       
+
+
                                    $zjd=(int)((1461*($zy + 4800 + (int)( ($zm-14) /12) ))/4) + (int)((367*($zm-2-12*((int)(($zm-14)/12))))/12)-(int)((3*(int)(( ($zy+4900+(int)(($zm-14)/12))/100)))/4)+$zd-32075;
                                    }
                 else
                        {
                                    $zjd = 367*$zy-(int)((7*($zy+5001+(int)(($zm-9)/7)))/4)+(int)((275*$zm)/9)+$zd+1729777;
                        }
-               
+
                $zl=$zjd-1948440+10632;
                $zn=(int)(($zl-1)/10631);
                $zl=$zl-10631*$zn+354;
@@ -1113,26 +1191,72 @@ class Language {
        }
 
        /**
-        * Algorithm to convert Gregorian dates to Thai solar dates.
+        * Algorithm to convert Gregorian dates to Thai solar dates,
+        * Minguo dates or Minguo dates.
         *
         * Link: http://en.wikipedia.org/wiki/Thai_solar_calendar
+        *       http://en.wikipedia.org/wiki/Minguo_calendar
+        *       http://en.wikipedia.org/wiki/Japanese_era_name
         *
-        * @param $ts String: 14-character timestamp
+        * @param $ts String: 14-character timestamp, calender name
         * @return array converted year, month, day
         */
-       private static function tsToThai( $ts ) {
+       private static function tsToYear( $ts, $cName ) {
                $gy = substr( $ts, 0, 4 );
                $gm = substr( $ts, 4, 2 );
                $gd = substr( $ts, 6, 2 );
 
-               # Add 543 years to the Gregorian calendar
-               # Months and days are identical
-               $gy_thai = $gy + 543;
+               if (!strcmp($cName,'thai')) {
+                       # Thai solar dates
+                       # Add 543 years to the Gregorian calendar
+                       # Months and days are identical
+                       $gy_offset = $gy + 543;
+               } else if ((!strcmp($cName,'minguo')) || !strcmp($cName,'juche')) {
+                       # Minguo dates
+                       # Deduct 1911 years from the Gregorian calendar
+                       # Months and days are identical
+                       $gy_offset = $gy - 1911;
+               } else if (!strcmp($cName,'tenno')) {
+                       # Nengō dates up to Meiji period
+                       # Deduct years from the Gregorian calendar
+                       # depending on the nengo periods
+                       # Months and days are identical
+                       if (($gy < 1912) || (($gy == 1912) && ($gm < 7)) || (($gy == 1912) && ($gm == 7) && ($gd < 31))) {
+                               # Meiji period
+                               $gy_gannen = $gy - 1868 + 1;
+                               $gy_offset = $gy_gannen;
+                               if ($gy_gannen == 1)
+                                       $gy_offset = '元';
+                               $gy_offset = '明治'.$gy_offset;
+                       } else if ((($gy == 1912) && ($gm == 7) && ($gd == 31)) || (($gy == 1912) && ($gm >= 8)) || (($gy > 1912) && ($gy < 1926)) || (($gy == 1926) && ($gm < 12)) || (($gy == 1926) && ($gm == 12) && ($gd < 26))) {
+                               # Taishō period
+                               $gy_gannen = $gy - 1912 + 1;
+                               $gy_offset = $gy_gannen;
+                               if ($gy_gannen == 1)
+                                       $gy_offset = '元';
+                               $gy_offset = '大正'.$gy_offset;
+                       } else if ((($gy == 1926) && ($gm == 12) && ($gd >= 26)) || (($gy > 1926) && ($gy < 1989)) || (($gy == 1989) && ($gm == 1) && ($gd < 8))) {
+                               # Shōwa period
+                               $gy_gannen = $gy - 1926 + 1;
+                               $gy_offset = $gy_gannen;
+                               if ($gy_gannen == 1)
+                                       $gy_offset = '元';
+                               $gy_offset = '昭和'.$gy_offset;
+                       } else {
+                               # Heisei period
+                               $gy_gannen = $gy - 1989 + 1;
+                               $gy_offset = $gy_gannen;
+                               if ($gy_gannen == 1)
+                                       $gy_offset = '元';
+                               $gy_offset = '平成'.$gy_offset;
+                       }
+               } else {
+                       $gy_offset = $gy;
+               }
 
-               return array( $gy_thai, $gm, $gd );
+               return array( $gy_offset, $gm, $gd );
        }
 
-
        /**
         * Roman number formatting up to 3000
         */
@@ -1143,7 +1267,7 @@ class Language {
                        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;
@@ -1253,10 +1377,32 @@ class Language {
                if( $datePreference == '' ) {
                        return 'default';
                }
-               
+
                return $datePreference;
        }
 
+       /**
+        * Get a format string for a given type and preference
+        * @param $type May be date, time or both
+        * @param $pref The format name as it appears in Messages*.php
+        */
+       function getDateFormatString( $type, $pref ) {
+               if ( !isset( $this->dateFormatStrings[$type][$pref] ) ) {
+                       if ( $pref == 'default' ) {
+                               $pref = $this->getDefaultDateFormat();
+                               $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
+                       } else {
+                               $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
+                               if ( is_null( $df ) ) {
+                                       $pref = $this->getDefaultDateFormat();
+                                       $df = self::$dataCache->getSubitem( $this->mCode, 'dateFormats', "$pref $type" );
+                               }
+                       }
+                       $this->dateFormatStrings[$type][$pref] = $df;
+               }
+               return $this->dateFormatStrings[$type][$pref];
+       }
+
        /**
         * @param $ts Mixed: the time format which needs to be turned into a
         *            date('YmdHis') format with wfTimestamp(TS_MW,$ts)
@@ -1268,16 +1414,11 @@ class Language {
         * @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;
+               if ( $adj ) {
+                       $ts = $this->userAdjust( $ts, $timecorrection );
                }
-               return $this->sprintfDate( $this->dateFormats["$pref date"], $ts );
+               $df = $this->getDateFormatString( 'date', $this->dateFormat( $format ) );
+               return $this->sprintfDate( $df, $ts );
        }
 
        /**
@@ -1291,16 +1432,11 @@ class Language {
         * @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;
+               if ( $adj ) {
+                       $ts = $this->userAdjust( $ts, $timecorrection );
                }
-               return $this->sprintfDate( $this->dateFormats["$pref time"], $ts );
+               $df = $this->getDateFormatString( 'time', $this->dateFormat( $format ) );
+               return $this->sprintfDate( $df, $ts );
        }
 
        /**
@@ -1315,69 +1451,74 @@ class Language {
         * @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 ); 
+               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 );
+               $df = $this->getDateFormatString( 'both', $this->dateFormat( $format ) );
+               return $this->sprintfDate( $df, $ts );
        }
 
        function getMessage( $key ) {
-               $this->load();
-               return isset( $this->messages[$key] ) ? $this->messages[$key] : null;
+               return self::$dataCache->getSubitem( $this->mCode, 'messages', $key );
        }
 
        function getAllMessages() {
-               $this->load();
-               return $this->messages;
+               return self::$dataCache->getItem( $this->mCode, 'messages' );
        }
 
        function iconv( $in, $out, $string ) {
-               # For most languages, this is a wrapper for iconv
-               return iconv( $in, $out . '//IGNORE', $string );
+               # This is a wrapper for iconv in all languages except esperanto,
+               # which does some nasty x-conversions beforehand
+
+               # Even with //IGNORE iconv can whine about illegal characters in
+               # *input* string. We just ignore those too.
+               # REF: http://bugs.php.net/bug.php?id=37166
+               # REF: https://bugzilla.wikimedia.org/show_bug.cgi?id=16885
+               wfSuppressWarnings();
+               $text = iconv( $in, $out . '//IGNORE', $string );
+               wfRestoreWarnings();
+               return $text;
        }
 
        // callback functions for uc(), lc(), ucwords(), ucwordbreaks()
        function ucwordbreaksCallbackAscii($matches){
                return $this->ucfirst($matches[1]);
        }
-       
+
        function ucwordbreaksCallbackMB($matches){
                return mb_strtoupper($matches[0]);
        }
-       
+
        function ucCallback($matches){
                list( $wikiUpperChars ) = self::getCaseMaps();
                return strtr( $matches[1], $wikiUpperChars );
        }
-       
+
        function lcCallback($matches){
                list( , $wikiLowerChars ) = self::getCaseMaps();
                return strtr( $matches[1], $wikiLowerChars );
        }
-       
+
        function ucwordsCallbackMB($matches){
                return mb_strtoupper($matches[0]);
        }
-       
+
        function ucwordsCallbackWiki($matches){
                list( $wikiUpperChars ) = self::getCaseMaps();
                return strtr( $matches[0], $wikiUpperChars );
        }
 
        function ucfirst( $str ) {
-               if ( empty($str) ) return $str;
-               if ( ord($str[0]) < 128 ) return ucfirst($str);
-               else return self::uc($str,true); // fall back to more complex logic in case of multibyte strings
+               $o = ord( $str );
+               if ( $o < 96 ) {
+                       return $str;
+               } elseif ( $o < 128 ) {
+                       return ucfirst($str);
+               } else {
+                       // fall back to more complex logic in case of multibyte strings
+                       return self::uc($str,true);
+               }
        }
 
        function uc( $str, $first = false ) {
@@ -1405,15 +1546,19 @@ class Language {
                        }
                }
        }
-       
+
        function lcfirst( $str ) {
-               if ( empty($str) ) return $str;
-               if ( is_string( $str ) && ord($str[0]) < 128 ) {
-                       // editing string in place = cool
-                       $str[0]=strtolower($str[0]);
+               $o = ord( $str );
+               if ( !$o ) {
+                       return strval( $str );
+               } elseif ( $o >= 128 ) {
+                       return self::lc( $str, true );
+               } elseif ( $o > 96 ) {
+                       return $str;
+               } else {
+                       $str[0] = strtolower( $str[0] );
                        return $str;
                }
-               else return self::lc( $str, true );
        }
 
        function lc( $str, $first = false ) {
@@ -1456,7 +1601,7 @@ class Language {
                                        array($this,"ucwordsCallbackMB"),
                                        $str
                                );
-                       else 
+                       else
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array($this,"ucwordsCallbackWiki"),
@@ -1484,7 +1629,7 @@ class Language {
                                        array($this,"ucwordbreaksCallbackMB"),
                                        $str
                                );
-                       else 
+                       else
                                return preg_replace_callback(
                                        $replaceRegexp,
                                        array($this,"ucwordsCallbackWiki"),
@@ -1501,7 +1646,7 @@ class Language {
        /**
         * Return a case-folded representation of $s
         *
-        * This is a representation such that caseFold($s1)==caseFold($s2) if $s1 
+        * This is a representation such that caseFold($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.
         *
@@ -1529,89 +1674,55 @@ class Language {
        }
 
        function fallback8bitEncoding() {
-               $this->load();
-               return $this->fallback8bitEncoding;
+               return self::$dataCache->getItem( $this->mCode, 'fallback8bitEncoding' );
+       }
+
+       /**
+        * Most writing systems use whitespace to break up words.
+        * Some languages such as Chinese don't conventionally do this,
+        * which requires special handling when breaking up words for
+        * searching etc.
+        */
+       function hasWordBreaks() {
+               return true;
        }
        
        /**
-        * 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.
-        *
+        * Some languages such as Chinese require word segmentation,
+        * Specify such segmentation when overridden in derived class.
+        * 
         * @param $string String
         * @return String
         */
-       function stripForSearch( $string ) {
-               global $wgDBtype;
-               if ( $wgDBtype != 'mysql' ) {
-                       return $string;
-               }
-
-
-               wfProfileIn( __METHOD__ );
-               
-               // MySQL fulltext index doesn't grok utf-8, so we
-               // need to fold cases and convert to hex
-               $out = preg_replace_callback(
-                       "/([\\xc0-\\xff][\\x80-\\xbf]*)/",
-                       array( $this, 'stripForSearchCallback' ),
-                       $this->lc( $string ) );
-               
-               // And to add insult to injury, the default indexing
-               // ignores short words... Pad them so we can pass them
-               // through without reconfiguring the server...
-               $minLength = $this->minSearchLength();
-               if( $minLength > 1 ) {
-                       $n = $minLength-1;
-                       $out = preg_replace(
-                               "/\b(\w{1,$n})\b/",
-                               "$1u800",
-                               $out );
-               }
-               
-               // Periods within things like hostnames and IP addresses
-               // are also important -- we want a search for "example.com"
-               // or "192.168.1.1" to work sanely.
-               //
-               // MySQL's search seems to ignore them, so you'd match on
-               // "example.wikipedia.com" and "192.168.83.1" as well.
-               $out = preg_replace(
-                       "/(\w)\.(\w|\*)/u",
-                       "$1u82e$2",
-                       $out );
-               
-               wfProfileOut( __METHOD__ );
-               return $out;
+       function wordSegmentation( $string ) {
+               return $string;
        }
-       
+
        /**
-        * Armor a case-folded UTF-8 string to get through MySQL's
-        * fulltext search without being mucked up by funny charset
-        * settings or anything else of the sort.
+        * Some languages have special punctuation need to be normalized.
+        * Make such changes here.
+        *
+        * @param $string String
+        * @return String
         */
-       protected function stripForSearchCallback( $matches ) {
-               return 'u8' . bin2hex( $matches[1] );
+       function normalizeForSearch( $string ) {
+               return $string;
        }
-       
+
        /**
-        * Check MySQL server's ft_min_word_len setting so we know
-        * if we need to pad short words...
-        */
-       protected function minSearchLength() {
-               if( !isset( $this->minSearchLength ) ) {
-                       $sql = "show global variables like 'ft\\_min\\_word\\_len'";
-                       $dbr = wfGetDB( DB_SLAVE );
-                       $result = $dbr->query( $sql );
-                       $row = $result->fetchObject();
-                       $result->free();
-                       
-                       if( $row && $row->Variable_name == 'ft_min_word_len' ) {
-                               $this->minSearchLength = intval( $row->Value );
-                       } else {
-                               $this->minSearchLength = 0;
-                       }
-               }
-               return $this->minSearchLength;
+        * convert double-width roman characters to single-width.
+        * range: ff00-ff5f ~= 0020-007f
+        */
+       protected static function convertDoubleWidth( $string ) {
+               $string = preg_replace( '/\xef\xbc([\x80-\xbf])/e', 'chr((ord("$1") & 0x3f) + 0x20)', $string );
+               $string = preg_replace( '/\xef\xbd([\x80-\x99])/e', 'chr((ord("$1") & 0x3f) + 0x60)', $string );
+               return $string;
+       }
+
+       protected static function insertSpace( $string, $pattern ) {
+               $string = preg_replace( $pattern, " $1 ", $string );
+               $string = preg_replace( '/ +/', ' ', $string );
+               return $string;
        }
 
        function convertForSearchResult( $termsArray ) {
@@ -1621,7 +1732,7 @@ class Language {
        }
 
        /**
-        * Get the first character of a string. 
+        * Get the first character of a string.
         *
         * @param $s string
         * @return string
@@ -1635,7 +1746,7 @@ class Language {
                        if ( strlen( $matches[1] ) != 3 ) {
                                return $matches[1];
                        }
-                       
+
                        // Break down Hangul syllables to grab the first jamo
                        $code = utf8ToCodepoint( $matches[1] );
                        if ( $code < 0xac00 || 0xd7a4 <= $code) {
@@ -1712,14 +1823,75 @@ class Language {
                }
        }
 
+       /**
+        * Convert a UTF-8 string to normal form C. In Malayalam and Arabic, this
+        * also cleans up certain backwards-compatible sequences, converting them
+        * to the modern Unicode equivalent.
+        *
+        * This is language-specific for performance reasons only.
+        */
+       function normalize( $s ) {
+               return UtfNormal::cleanUp( $s );
+       }
+
+       /**
+        * Transform a string using serialized data stored in the given file (which
+        * must be in the serialized subdirectory of $IP). The file contains pairs
+        * mapping source characters to destination characters.
+        *
+        * The data is cached in process memory. This will go faster if you have the
+        * FastStringSearch extension.
+        */
+       function transformUsingPairFile( $file, $string ) {
+               if ( !isset( $this->transformData[$file] ) ) {
+                       $data = wfGetPrecompiledData( $file );
+                       if ( $data === false ) {
+                               throw new MWException( __METHOD__.": The transformation file $file is missing" );
+                       }
+                       $this->transformData[$file] = new ReplacementArray( $data );
+               }
+               return $this->transformData[$file]->replace( $string );
+       }
+
        /**
         * For right-to-left language support
         *
         * @return bool
         */
-       function isRTL() { 
-               $this->load();
-               return $this->rtl;
+       function isRTL() {
+               return self::$dataCache->getItem( $this->mCode, 'rtl' );
+       }
+
+       /**
+        * Return the correct HTML 'dir' attribute value for this language.
+        * @return String
+        */
+       function getDir() {
+               return $this->isRTL() ? 'rtl' : 'ltr';
+       }
+
+       /**
+        * Return 'left' or 'right' as appropriate alignment for line-start
+        * for this language's text direction.
+        *
+        * Should be equivalent to CSS3 'start' text-align value....
+        *
+        * @return String
+        */
+       function alignStart() {
+               return $this->isRTL() ? 'right' : 'left';
+       }
+
+       /**
+        * Return 'right' or 'left' as appropriate alignment for line-end
+        * for this language's text direction.
+        *
+        * Should be equivalent to CSS3 'end' text-align value....
+        *
+        * @return String
+        */
+       function alignEnd() {
+               return $this->isRTL() ? 'left' : 'right';
        }
 
        /**
@@ -1731,6 +1903,10 @@ class Language {
                return $this->isRTL() ? "\xE2\x80\x8F" : "\xE2\x80\x8E";
        }
 
+       function capitalizeAllNouns() {
+               return self::$dataCache->getItem( $this->mCode, 'capitalizeAllNouns' );
+       }
+
        /**
         * An arrow, depending on the language direction
         *
@@ -1746,34 +1922,29 @@ class Language {
         * @return bool
         */
        function linkPrefixExtension() {
-               $this->load();
-               return $this->linkPrefixExtension;
+               return self::$dataCache->getItem( $this->mCode, 'linkPrefixExtension' );
        }
 
-       function &getMagicWords() {
-               $this->load();
-               return $this->magicWords;
+       function getMagicWords() {
+               return self::$dataCache->getItem( $this->mCode, 'magicWords' );
        }
 
        # Fill a MagicWord object with data from here
-       function getMagic( &$mw ) {
+       function getMagic( $mw ) {
                if ( !$this->mMagicHookDone ) {
                        $this->mMagicHookDone = true;
+                       wfProfileIn( 'LanguageGetMagic' );
                        wfRunHooks( 'LanguageGetMagic', array( &$this->mMagicExtensions, $this->getCode() ) );
+                       wfProfileOut( 'LanguageGetMagic' );
                }
                if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
                        $rawEntry = $this->mMagicExtensions[$mw->mId];
                } else {
-                       $magicWords =& $this->getMagicWords();
+                       $magicWords = $this->getMagicWords();
                        if ( isset( $magicWords[$mw->mId] ) ) {
                                $rawEntry = $magicWords[$mw->mId];
                        } else {
-                               # Fall back to English if local list is incomplete
-                               $magicWords =& Language::getMagicWords();
-                               if ( !isset($magicWords[$mw->mId]) ) {
-                                       throw new MWException("Magic word '{$mw->mId}' not found" ); 
-                               }
-                               $rawEntry = $magicWords[$mw->mId];
+                               $rawEntry = false;
                        }
                }
 
@@ -1811,43 +1982,11 @@ class Language {
         *   case folded alias => real name
         */
        function getSpecialPageAliases() {
-               $this->load();
-
                // Cache aliases because it may be slow to load them
-               if ( !isset( $this->mExtendedSpecialPageAliases ) ) {
-
+               if ( is_null( $this->mExtendedSpecialPageAliases ) ) {
                        // Initialise array
-                       $this->mExtendedSpecialPageAliases = $this->specialPageAliases;
-
-                       global $wgExtensionAliasesFiles;
-                       foreach ( $wgExtensionAliasesFiles as $file ) {
-
-                               // Fail fast
-                               if ( !file_exists($file) )
-                                       throw new MWException( "Aliases file does not exist: $file" );
-
-                               $aliases = array();
-                               require($file);
-
-                               // Check the availability of aliases
-                               if ( !isset($aliases['en']) )
-                                       throw new MWException( "Malformed aliases file: $file" );
-
-                               // Merge all aliases in fallback chain
-                               $code = $this->getCode();
-                               do {
-                                       if ( !isset($aliases[$code]) ) continue;
-
-                                       $aliases[$code] = $this->fixSpecialPageAliases( $aliases[$code] );
-                                       /* Merge the aliases, THIS will break if there is special page name
-                                       * which looks like a numerical key, thanks to PHP...
-                                       * See the array_merge_recursive manual entry */
-                                       $this->mExtendedSpecialPageAliases = array_merge_recursive(
-                                               $this->mExtendedSpecialPageAliases, $aliases[$code] );
-
-                               } while ( $code = self::getFallbackFor( $code ) );
-                       }
-
+                       $this->mExtendedSpecialPageAliases =
+                               self::$dataCache->getItem( $this->mCode, 'specialPageAliases' );
                        wfRunHooks( 'LanguageGetSpecialPageAliases',
                                array( &$this->mExtendedSpecialPageAliases, $this->getCode() ) );
                }
@@ -1855,20 +1994,6 @@ class Language {
                return $this->mExtendedSpecialPageAliases;
        }
 
-       /**
-        * Function to fix special page aliases. Will convert the first letter to
-        * upper case and spaces to underscores. Can be given a full aliases array,
-        * in which case it will recursively fix all aliases.
-        */
-       public function fixSpecialPageAliases( $mixed ) {
-               // Work recursively until in string level
-               if ( is_array($mixed) ) {
-                       $callback = array( $this, 'fixSpecialPageAliases' );
-                       return array_map( $callback, $mixed );
-               }
-               return str_replace( ' ', '_', $this->ucfirst( $mixed ) );
-       }
-
        /**
         * Italic is unsuitable for some languages
         *
@@ -1941,13 +2066,11 @@ class Language {
        }
 
        function digitTransformTable() {
-               $this->load();
-               return $this->digitTransformTable;
+               return self::$dataCache->getItem( $this->mCode, 'digitTransformTable' );
        }
 
        function separatorTransformTable() {
-               $this->load();
-               return $this->separatorTransformTable;
+               return self::$dataCache->getItem( $this->mCode, 'separatorTransformTable' );
        }
 
 
@@ -1988,7 +2111,7 @@ class Language {
        function commaList( $list ) {
                return implode(
                        $list,
-                       wfMsgExt( 'comma-separator', array( 'escapenoentities', 'language' => $this ) ) );
+                       wfMsgExt( 'comma-separator', array( 'parsemag', 'escapenoentities', 'language' => $this ) ) );
        }
 
        /**
@@ -2000,7 +2123,7 @@ class Language {
        function semicolonList( $list ) {
                return implode(
                        $list,
-                       wfMsgExt( 'semicolon-separator', array( 'escapenoentities', 'language' => $this ) ) );
+                       wfMsgExt( 'semicolon-separator', array( 'parsemag', 'escapenoentities', 'language' => $this ) ) );
        }
 
        /**
@@ -2023,7 +2146,7 @@ class Language {
         * are included, otherwise broken characters can be passed to the user
         *
         * If $length is negative, the string will be truncated from the beginning
-        *       
+        *
         * @param $string String to truncate
         * @param $length Int: maximum length (excluding ellipses)
         * @param $ellipsis String to append to the truncated text
@@ -2041,6 +2164,7 @@ class Language {
                if ( strlen( $string ) <= abs( $length ) ) {
                        return $string;
                }
+               $stringOriginal = $string;
                if( $length > 0 ) {
                        $string = substr( $string, 0, $length );
                        $char = ord( $string[strlen( $string ) - 1] );
@@ -2054,7 +2178,13 @@ class Language {
                                # We chopped in the middle of a character; remove it
                                $string = $m[1];
                        }
-                       return $string . $ellipsis;
+                       # Do not truncate if the ellipsis actually make the string longer. Bug 22181
+                       if ( strlen( $string ) + strlen( $ellipsis ) < strlen( $stringOriginal ) ) {
+                               return $string . $ellipsis;
+                       } else {
+                               return $stringOriginal;
+                       }
+
                } else {
                        $string = substr( $string, $length );
                        $char = ord( $string[0] );
@@ -2062,7 +2192,12 @@ class Language {
                                # We chopped in the middle of a character; remove the whole thing
                                $string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
                        }
-                       return $ellipsis . $string;
+                       # Do not truncate if the ellipsis actually make the string longer. Bug 22181
+                       if ( strlen( $string ) + strlen( $ellipsis ) < strlen( $stringOriginal ) ) {
+                               return $ellipsis . $string;
+                       } else {
+                               return $stringOriginal;
+                       }
                }
        }
 
@@ -2182,31 +2317,31 @@ class Language {
                return $text;
        }
 
+       # convert text to all supported variants
+       function autoConvertToAllVariants($text) {
+               return $this->mConverter->autoConvertToAllVariants($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($text){ 
+       function armourMath($text){
                return $this->mConverter->armourMath($text);
        }
 
 
        /**
         * Perform output conversion on a string, and encode for safe HTML output.
-        * @param $text String
-        * @param $isTitle Bool -- wtf?
+        * @param $text String text to be converted
+        * @param $isTitle Bool whether this conversion is for the article title
         * @return string
         * @todo this should get integrated somewhere sane
         */
@@ -2229,8 +2364,8 @@ class Language {
        }
 
 
-       function getPreferredVariant( $fromUser = true ) {
-               return $this->mConverter->getPreferredVariant( $fromUser );
+       function getPreferredVariant( $fromUser = true, $fromHeader = false ) {
+               return $this->mConverter->getPreferredVariant( $fromUser, $fromHeader );
        }
 
        /**
@@ -2291,16 +2426,6 @@ class Language {
        function markNoConversion( $text, $noParse=false ) {
                return $this->mConverter->markNoConversion( $text, $noParse );
        }
-       
-       /**
-        * Callback function for magicword 'groupconvert'
-        *
-        * @param string $group: the group name called for
-        * @return blank string
-        */
-       function groupConvert( $group ) {
-               return $this->mConverter->groupConvert( $group );
-       }
 
        /**
         * A regular expression to match legal word-trailing characters
@@ -2309,8 +2434,7 @@ class Language {
         * @return string
         */
        function linkTrail() {
-               $this->load();
-               return $this->linkTrail;
+               return self::$dataCache->getItem( $this->mCode, 'linkTrail' );
        }
 
        function getLangObj() {
@@ -2328,10 +2452,34 @@ class Language {
                $this->mCode = $code;
        }
 
+       /**
+        * Get the name of a file for a certain language code
+        * @param $prefix string Prepend this to the filename
+        * @param $code string Language code
+        * @param $suffix string Append this to the filename
+        * @return string $prefix . $mangledCode . $suffix
+        */
        static function getFileName( $prefix = 'Language', $code, $suffix = '.php' ) {
                return $prefix . str_replace( '-', '_', ucfirst( $code ) ) . $suffix;
        }
 
+       /**
+        * Get the language code from a file name. Inverse of getFileName()
+        * @param $filename string $prefix . $languageCode . $suffix
+        * @param $prefix string Prefix before the language code
+        * @param $suffix string Suffix after the language code
+        * @return Language code, or false if $prefix or $suffix isn't found
+        */
+       static function getCodeFromFileName( $filename, $prefix = 'Language', $suffix = '.php' ) {
+               $m = null;
+               preg_match( '/' . preg_quote( $prefix, '/' ) . '([A-Z][a-z_]+)' .
+                       preg_quote( $suffix, '/' ) . '/', $filename, $m );
+               if ( !count( $m ) ) {
+                       return false;
+               }
+               return str_replace( '_', '-', strtolower( $m[1] ) );
+       }
+
        static function getMessagesFileName( $code ) {
                global $IP;
                return self::getFileName( "$IP/languages/messages/Messages", $code, '.php' );
@@ -2341,305 +2489,32 @@ class Language {
                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, $wgEnableSerializedMessages, $wgCheckSerialized;
-
-               if ( !$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
-                       if( $wgEnableSerializedMessages ) {
-                               $cache = wfGetPrecompiledData( self::getFileName( "Messages", $code, '.ser' ) );
-                               if ( $cache ) {
-                                       if ( $wgCheckSerialized && self::isLocalisationOutOfDate( $cache ) ) {
-                                               $cache = false;
-                                               wfDebug( "Language::loadLocalisation(): precompiled data file for $code is out of date\n" );
-                                       } else {
-                                               self::$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 );
-                       $fbMemcKey = wfMemcKey('fallback', $cache['fallback'] );
-                       $cache = $wgMemc->get( $memcKey );
-                       if ( $cache ) {
-                               if ( self::isLocalisationOutOfDate( $cache ) ) {
-                                       $wgMemc->delete( $memcKey );
-                                       $wgMemc->delete( $fbMemcKey );
-                                       $cache = false;
-                                       wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired\n" );
-                               } else {
-                                       self::$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" );
-                       $cache = compact( self::$mLocalisationKeys ); // Set correct fallback
-                       $deps = array();
-               } else {
-                       $deps = array( $filename => filemtime( $filename ) );
-                       require( $filename );
-                       $cache = compact( self::$mLocalisationKeys );
-                       wfDebug( "Language::loadLocalisation(): got localisation for $code from source\n" );
-               }
-               
-               # Load magic word source file
-               global $IP;
-               $filename = "$IP/includes/MagicWord.php";
-               $newDeps = array( $filename => filemtime( $filename ) );
-               $deps = array_merge( $deps, $newDeps );
-
-               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'] );
-
-               # And do the same for specialpage aliases. $page is an array.
-               foreach ( $cache['specialPageAliases'] as &$page ) {
-                       $page = str_replace( ' ', '_', $page );
-               }
-               # Decouple the reference to prevent accidental damage
-               unset($page);
-               
-               # Save to both caches
-               self::$mLocalisationCache[$code] = $cache;
-               if ( !$disableCache ) {
-                       $wgMemc->set( $memcKey, $cache );
-                       $wgMemc->set( $fbMemcKey, (string) $cache['fallback'] );
-               }
-
-               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[$cache];
-               }
-               // At least one language file and the MagicWord file needed
-               if( count($cache['deps']) < 2 ) {
-                       return true;
-               }
-               $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 ) {
-               // Shortcut
-               if ( $code === 'en' ) return false;
-
-               // Local cache
-               static $cache = array();
-               // Quick return
-               if ( isset($cache[$code]) ) return $cache[$code];
-
-               // Try memcache
-               global $wgMemc;
-               $memcKey = wfMemcKey( 'fallback', $code );
-               $fbcode = $wgMemc->get( $memcKey );
-
-               if ( is_string($fbcode) ) {
-                       // False is stored as a string to detect failures in memcache properly
-                       if ( $fbcode === '' ) $fbcode = false;
-
-                       // Update local cache and return
-                       $cache[$code] = $fbcode;
-                       return $fbcode;
+               if ( $code === 'en' ) {
+                       // Shortcut
+                       return false;
+               } else {
+                       return self::getLocalisationCache()->getItem( $code, 'fallback' );
                }
-
-               // Nothing in caches, load and and update both caches
-               self::loadLocalisation( $code );
-               $fbcode = self::$mLocalisationCache[$code]['fallback'];
-
-               $cache[$code] = $fbcode;
-               $wgMemc->set( $memcKey, (string) $fbcode );
-
-               return $fbcode;
        }
 
-       /** 
+       /**
         * Get all messages for a given language
+        * WARNING: this may take a long time
         */
        static function getMessagesFor( $code ) {
-               self::loadLocalisation( $code );
-               return self::$mLocalisationCache[$code]['messages'];
+               return self::getLocalisationCache()->getItem( $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];
-                       $this->namespaceNames[NS_PROJECT_TALK] =
-                               $this->fixVariableInNamespace( $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 ) {
-                               if ( $index === NS_PROJECT_TALK ) {
-                                       unset( $this->namespaceAliases[$name] );
-                                       $name = $this->fixVariableInNamespace( $name );
-                                       $this->namespaceAliases[$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__ );
+               return self::getLocalisationCache()->getSubitem( $code, 'messages', $key );
        }
 
        function fixVariableInNamespace( $talk ) {
@@ -2649,10 +2524,10 @@ class Language {
                $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. 
+               # 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', 
+               $talk = preg_replace_callback( '/{{grammar:(.*?)\|(.*?)}}/i',
                        array( &$this, 'replaceGrammarInNamespace' ), $talk );
                return str_replace( ' ', '_', $talk );
        }
@@ -2670,7 +2545,7 @@ class Language {
                wfProfileIn( __METHOD__ );
                $arr = wfGetPrecompiledData( 'Utf8Case.ser' );
                if ( $arr === false ) {
-                       throw new MWException( 
+                       throw new MWException(
                                "Utf8Case.ser is missing, please run \"make\" in the serialized directory\n" );
                }
                extract( $arr );
@@ -2684,13 +2559,13 @@ class Language {
                } elseif ( $seconds < 60 ) {
                        return $this->formatNum( round( $seconds ) ) . wfMsg( 'seconds-abbrev' );
                } elseif ( $seconds < 3600 ) {
-                       return $this->formatNum( floor( $seconds / 60 ) ) . wfMsg( 'minutes-abbrev' ) . 
+                       return $this->formatNum( floor( $seconds / 60 ) ) . wfMsg( 'minutes-abbrev' ) .
                                $this->formatNum( round( fmod( $seconds, 60 ) ) ) . wfMsg( 'seconds-abbrev' );
                } else {
                        $hours = floor( $seconds / 3600 );
                        $minutes = floor( ( $seconds - $hours * 3600 ) / 60 );
                        $secondsPart = round( $seconds - $hours * 3600 - $minutes * 60 );
-                       return $this->formatNum( $hours ) . wfMsg( 'hours-abbrev' ) . 
+                       return $this->formatNum( $hours ) . wfMsg( 'hours-abbrev' ) .
                                $this->formatNum( $minutes ) . wfMsg( 'minutes-abbrev' ) .
                                $this->formatNum( $secondsPart ) . wfMsg( 'seconds-abbrev' );
                }
@@ -2743,4 +2618,11 @@ class Language {
                $text = $this->getMessageFromDB( $msg );
                return str_replace( '$1', $this->formatNum( $size ), $text );
        }
+
+       /**
+        * Get the conversion rule title, if any.
+        */
+       function getConvRuleTitle() {
+               return $this->mConverter->getConvRuleTitle();
+       }
 }