From 222b01f5169f1c7e69762e0e8904c24f78f71882 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Wed, 28 Jul 2010 11:52:48 +0200
Subject: update to MediaWiki 1.16.0

---
 languages/Language.php | 1075 ++++++++++++++++++++++--------------------------
 1 file changed, 485 insertions(+), 590 deletions(-)

(limited to 'languages/Language.php')

diff --git a/languages/Language.php b/languages/Language.php
index 8853aced..343ac8a7 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -34,11 +34,13 @@ if( function_exists( 'mb_strtoupper' ) ) {
  */
 class FakeConverter {
 	var $mLang;
-	function FakeConverter($langobj) {$this->mLang = $langobj;}
-	function convert($t, $i) {return $t;}
-	function parserConvert($t, $p) {return $t;}
+	function FakeConverter( $langobj ) { $this->mLang = $langobj; }
+	function autoConvertToAllVariants( $text ) { return $text; }
+	function convert( $t ) { return $t; }
+	function convertTitle( $t ) { return $t->getPrefixedText(); }
 	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 '';}
@@ -56,24 +58,16 @@ 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(
@@ -122,7 +116,7 @@ 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',
@@ -165,7 +159,7 @@ 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 );
@@ -179,6 +173,18 @@ 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
@@ -187,6 +193,7 @@ class Language {
 		} else {
 			$this->mCode = str_replace( '_', '-', strtolower( substr( get_class( $this ), 8 ) ) );
 		}
+		self::getLocalisationCache();
 	}
 
 	/**
@@ -214,7 +221,11 @@ class Language {
 	}
 
 	function getFallbackLanguageCode() {
-		return self::getFallbackFor( $this->mCode );
+		if ( $this->mCode === 'en' ) {
+			return false;
+		} else {
+			return self::$dataCache->getItem( $this->mCode, 'fallback' );
+		}
 	}
 
 	/**
@@ -222,15 +233,34 @@ 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;
 	}
 
@@ -286,11 +316,54 @@ 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.
@@ -299,10 +372,12 @@ 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;
 	}
 
 	/**
@@ -334,48 +409,41 @@ 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( $tog ) {
@@ -392,17 +460,14 @@ class Language {
 		if ( !$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 );
@@ -458,11 +523,11 @@ 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.
 	 *
@@ -514,7 +579,7 @@ 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
@@ -523,19 +588,19 @@ 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":
@@ -566,6 +631,11 @@ 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
@@ -578,7 +648,7 @@ 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
@@ -597,6 +667,8 @@ class Language {
 		$hebrew = false;
 		$hijri = false;
 		$thai = false;
+		$minguo = false;
+		$tenno = false;
 		for ( $p = 0; $p < strlen( $format ); $p++ ) {
 			$num = false;
 			$code = $format[$p];
@@ -604,7 +676,7 @@ 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];
 			}
 
@@ -748,9 +820,17 @@ 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;
@@ -770,7 +850,7 @@ 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;
@@ -841,11 +921,11 @@ 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 ) {
@@ -872,7 +952,7 @@ class Language {
 
 		// Days passed in current month
 		$gDayNo += $gd;
-		
+
 		$jDayNo = $gDayNo - 79;
 
 		$jNp = floor($jDayNo / 12053);
@@ -906,7 +986,7 @@ class Language {
 		$year = substr( $ts, 0, 4 );
 		$month = substr( $ts, 4, 2 );
 		$day = substr( $ts, 6, 2 );
-		
+
 		$zyr = $year;
 		$zd=$day;
 		$zm=$month;
@@ -916,15 +996,15 @@ 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;
@@ -1112,26 +1192,72 @@ 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
 	 */
@@ -1142,7 +1268,7 @@ 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;
@@ -1252,10 +1378,32 @@ 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)
@@ -1267,16 +1415,11 @@ 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 );
 	}
 
 	/**
@@ -1290,16 +1433,11 @@ 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 );
 	}
 
 	/**
@@ -1314,69 +1452,74 @@ 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 ); 
-		}
-
-		$pref = $this->dateFormat( $format );
-		if( $pref == 'default' || !isset( $this->dateFormats["$pref both"] ) ) {
-			$pref = $this->defaultDateFormat;
+		if ( $adj ) {
+			$ts = $this->userAdjust( $ts, $timecorrection );
 		}
-
-		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 ) {
@@ -1404,15 +1547,19 @@ 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, $first = false ) {
@@ -1455,7 +1602,7 @@ class Language {
 					array($this,"ucwordsCallbackMB"),
 					$str
 				);
-			else 
+			else
 				return preg_replace_callback(
 					$replaceRegexp,
 					array($this,"ucwordsCallbackWiki"),
@@ -1483,7 +1630,7 @@ class Language {
 					array($this,"ucwordbreaksCallbackMB"),
 					$str
 				);
-			else 
+			else
 				return preg_replace_callback(
 					$replaceRegexp,
 					array($this,"ucwordsCallbackWiki"),
@@ -1500,7 +1647,7 @@ 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.
 	 *
@@ -1528,89 +1675,55 @@ 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 ) {
@@ -1620,7 +1733,7 @@ class Language {
 	}
 
 	/**
-	 * Get the first character of a string. 
+	 * Get the first character of a string.
 	 *
 	 * @param $s string
 	 * @return string
@@ -1634,7 +1747,7 @@ 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) {
@@ -1711,14 +1824,75 @@ 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';
 	}
 
 	/**
@@ -1730,6 +1904,10 @@ 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
 	 *
@@ -1745,34 +1923,29 @@ 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;
 			}
 		}
 
@@ -1810,43 +1983,11 @@ 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() ) );
 		}
@@ -1854,20 +1995,6 @@ 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
 	 *
@@ -1940,13 +2067,11 @@ 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' );
 	}
 
 
@@ -1987,7 +2112,7 @@ class Language {
 	function commaList( $list ) {
 		return implode(
 			$list,
-			wfMsgExt( 'comma-separator', array( 'escapenoentities', 'language' => $this ) ) );
+			wfMsgExt( 'comma-separator', array( 'parsemag', 'escapenoentities', 'language' => $this ) ) );
 	}
 
 	/**
@@ -1999,7 +2124,7 @@ class Language {
 	function semicolonList( $list ) {
 		return implode(
 			$list,
-			wfMsgExt( 'semicolon-separator', array( 'escapenoentities', 'language' => $this ) ) );
+			wfMsgExt( 'semicolon-separator', array( 'parsemag', 'escapenoentities', 'language' => $this ) ) );
 	}
 
 	/**
@@ -2022,7 +2147,7 @@ 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
@@ -2040,6 +2165,7 @@ 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] );
@@ -2053,7 +2179,8 @@ class Language {
 				# We chopped in the middle of a character; remove it
 				$string = $m[1];
 			}
-			return $string . $ellipsis;
+			$string = $string . $ellipsis;
+
 		} else {
 			$string = substr( $string, $length );
 			$char = ord( $string[0] );
@@ -2061,7 +2188,13 @@ class Language {
 				# We chopped in the middle of a character; remove the whole thing
 				$string = preg_replace( '/^[\x80-\xbf]+/', '', $string );
 			}
-			return $ellipsis . $string;
+			$string = $ellipsis . $string;
+		}
+		# Do not truncate if the ellipsis actually make the string longer. Bug 22181
+		if ( strlen( $string ) < strlen( $stringOriginal ) ) {
+			return $string;
+		} else {
+			return $stringOriginal;
 		}
 	}
 
@@ -2181,14 +2314,19 @@ 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);
+	function convert( $text ) {
+		return $this->mConverter->convert( $text );
 	}
 
-	# Convert text from within Parser
-	function parserConvert( $text, &$parser ) {
-		return $this->mConverter->parserConvert( $text, $parser );
+	# Convert a Title object to a string in the preferred variant
+	function convertTitle( $title ) {
+		return $this->mConverter->convertTitle( $title );
 	}
 
 	# Check if this is a language with variants
@@ -2197,15 +2335,15 @@ class Language {
 	}
 
 	# 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
 	 */
@@ -2228,8 +2366,8 @@ class Language {
 	}
 
 
-	function getPreferredVariant( $fromUser = true ) {
-		return $this->mConverter->getPreferredVariant( $fromUser );
+	function getPreferredVariant( $fromUser = true, $fromHeader = false ) {
+		return $this->mConverter->getPreferredVariant( $fromUser, $fromHeader );
 	}
 
 	/**
@@ -2298,8 +2436,7 @@ class Language {
 	 * @return string
 	 */
 	function linkTrail() {
-		$this->load();
-		return $this->linkTrail;
+		return self::$dataCache->getItem( $this->mCode, 'linkTrail' );
 	}
 
 	function getLangObj() {
@@ -2317,10 +2454,34 @@ 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' );
@@ -2330,305 +2491,32 @@ 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 ) {
@@ -2638,10 +2526,10 @@ 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 );
 	}
@@ -2659,7 +2547,7 @@ 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 );
@@ -2673,13 +2561,13 @@ 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' );
 		}
@@ -2732,4 +2620,11 @@ 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();
+	}
 }
-- 
cgit v1.2.2