Merge "Add TitleQuickPermissions hook to Title::checkQuickPermissions"

[lhc/web/wiklou.git] / languages / Language.php

diff --git a/languages/Language.php b/languages/Language.php
index b9201d7..ea34363 100644 (file)
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -32,7 +32,7 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 
 # Read language names
 global $wgLanguageNames;
-require_once( __DIR__ . '/Names.php' );
+require_once __DIR__ . '/Names.php';
 
 if ( function_exists( 'mb_strtoupper' ) ) {
        mb_internal_encoding( 'UTF-8' );
@@ -170,6 +170,14 @@ class Language {
                'seconds' => 1,
        );
 
+       /**
+        * Cache for language fallbacks.
+        * @see Language::getFallbacksIncludingSiteLanguage
+        * @since 1.21
+        * @var array
+        */
+       static private $fallbackLanguageCache = array();
+
        /**
         * Get a cached or new language object for a given language code
         * @param $code String
@@ -326,13 +334,19 @@ class Language {
         * @return bool
         */
        public static function isValidCode( $code ) {
-               return
-                       // People think language codes are html safe, so enforce it.
-                       // Ideally we should only allow a-zA-Z0-9-
-                       // but, .+ and other chars are often used for {{int:}} hacks
-                       // see bugs 37564, 37587, 36938
+               static $cache = array();
+               if ( isset( $cache[$code] ) ) {
+                       return $cache[$code];
+               }
+               // People think language codes are html safe, so enforce it.
+               // Ideally we should only allow a-zA-Z0-9-
+               // but, .+ and other chars are often used for {{int:}} hacks
+               // see bugs 37564, 37587, 36938
+               $cache[$code] =
                        strcspn( $code, ":/\\\000&<>'\"" ) === strlen( $code )
                        && !preg_match( Title::getTitleInvalidRegex(), $code );
+
+               return $cache[$code];
        }
 
        /**
@@ -372,7 +386,7 @@ class Language {
                static $coreLanguageNames;
 
                if ( $coreLanguageNames === null ) {
-                       include( MWInit::compiledPath( 'languages/Names.php' ) );
+                       include MWInit::compiledPath( 'languages/Names.php' );
                }
 
                if ( isset( $coreLanguageNames[$tag] )
@@ -408,10 +422,8 @@ class Language {
                        return;
                }
 
-               if ( !defined( 'MW_COMPILED' ) ) {
-                       if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
-                               include_once( "$IP/languages/classes/$class.php" );
-                       }
+               if ( file_exists( "$IP/languages/classes/$class.php" ) ) {
+                       include_once "$IP/languages/classes/$class.php";
                }
        }
 
@@ -845,7 +857,7 @@ class Language {
                static $coreLanguageNames;
 
                if ( $coreLanguageNames === null ) {
-                       include( MWInit::compiledPath( 'languages/Names.php' ) );
+                       include MWInit::compiledPath( 'languages/Names.php' );
                }
 
                $names = array();
@@ -3593,10 +3605,6 @@ class Language {
         * @return string Correct form of plural for $count in this language
         */
        function convertPlural( $count, $forms ) {
-               if ( !count( $forms ) ) {
-                       return '';
-               }
-
                // Handle explicit n=pluralform cases
                foreach ( $forms as $index => $form ) {
                        if ( preg_match( '/\d+=/i', $form ) ) {
@@ -3607,7 +3615,11 @@ class Language {
                                unset( $forms[$index] );
                        }
                }
+
                $forms = array_values( $forms );
+               if ( !count( $forms ) ) {
+                       return '';
+               }
 
                $pluralForm = $this->getPluralRuleIndexNumber( $count );
                $pluralForm = min( $pluralForm, count( $forms ) - 1 );
@@ -4049,6 +4061,36 @@ class Language {
                }
        }
 
+       /**
+        * Get the ordered list of fallback languages, ending with the fallback
+        * language chain for the site language.
+        *
+        * @since 1.22
+        * @param string $code Language code
+        * @return array array( fallbacks, site fallbacks )
+        */
+       public static function getFallbacksIncludingSiteLanguage( $code ) {
+               global $wgLanguageCode;
+
+               // Usually, we will only store a tiny number of fallback chains, so we
+               // keep them in static memory.
+               $cacheKey = "{$code}-{$wgLanguageCode}";
+
+               if ( !array_key_exists( $cacheKey, self::$fallbackLanguageCache ) ) {
+                       $fallbacks = self::getFallbacksFor( $code );
+
+                       // Append the site's fallback chain, including the site language itself
+                       $siteFallbacks = self::getFallbacksFor( $wgLanguageCode );
+                       array_unshift( $siteFallbacks, $wgLanguageCode );
+
+                       // Eliminate any languages already included in the chain
+                       $siteFallbacks = array_diff( $siteFallbacks, $fallbacks );
+
+                       self::$fallbackLanguageCache[$cacheKey] = array( $fallbacks, $siteFallbacks );
+               }
+               return self::$fallbackLanguageCache[$cacheKey];
+       }
+
        /**
         * Get all messages for a given language
         * WARNING: this may take a long time. If you just need all message *keys*