From beb89065575e9e912187f6af2541fea62a2f2234 Mon Sep 17 00:00:00 2001
From: "Mark A. Hershberger" <mah@users.mediawiki.org>
Date: Tue, 1 Nov 2011 18:31:04 +0000
Subject: [PATCH] Re-apply Vitaliy Filippov's patch from Bug #29283 with a
 modification to make it work when no ACCEL cache is available.

---
 includes/AutoLoader.php        |  1 +
 includes/LocalisationCache.php | 66 ++++++++++++++++++++++++++++++++--
 2 files changed, 64 insertions(+), 3 deletions(-)

diff --git a/includes/AutoLoader.php b/includes/AutoLoader.php
index 2f072121db..5ac74a1f3b 100644
--- a/includes/AutoLoader.php
+++ b/includes/AutoLoader.php
@@ -127,6 +127,7 @@ $wgAutoloadLocalClasses = array(
 	'IndexPager' => 'includes/Pager.php',
 	'Interwiki' => 'includes/interwiki/Interwiki.php',
 	'IP' => 'includes/IP.php',
+	'LCStore_Accel' => 'includes/LocalisationCache.php',
 	'LCStore_CDB' => 'includes/LocalisationCache.php',
 	'LCStore_DB' => 'includes/LocalisationCache.php',
 	'LCStore_Null' => 'includes/LocalisationCache.php',
diff --git a/includes/LocalisationCache.php b/includes/LocalisationCache.php
index f76ae11a37..591f9732f9 100644
--- a/includes/LocalisationCache.php
+++ b/includes/LocalisationCache.php
@@ -159,8 +159,16 @@ class LocalisationCache {
 				case 'db':
 					$storeClass = 'LCStore_DB';
 					break;
+				case 'accel':
+					$storeClass = 'LCStore_Accel';
+					break;
 				case 'detect':
-					$storeClass = $wgCacheDirectory ? 'LCStore_CDB' : 'LCStore_DB';
+					try {
+						$c = wfGetCache( CACHE_ACCEL );
+						$storeClass = 'LCStore_Accel';
+					} catch( Exception $c ) {
+						$storeClass = $wgCacheDirectory ? 'LCStore_CDB' : 'LCStore_DB';
+					}
 					break;
 				default:
 					throw new MWException(
@@ -348,7 +356,9 @@ class LocalisationCache {
 		}
 
 		$deps = $this->store->get( $code, 'deps' );
-		if ( $deps === null ) {
+		$keys = $this->store->get( $code, 'list', 'messages' );
+		// 'list:messages' sometimes expires separately of 'deps' in LCStore_Accel
+		if ( $deps === null || $keys === null ) {
 			wfDebug( __METHOD__."($code): cache missing, need to make one\n" );
 			return true;
 		}
@@ -829,6 +839,56 @@ interface LCStore {
 	function set( $key, $value );
 }
 
+/**
+ * LCStore implementation which uses PHP accelerator to store data.
+ * This will work if one of XCache, eAccelerator, or APC cacher is configured.
+ * (See ObjectCache.php)
+ */
+class LCStore_Accel implements LCStore {
+	var $currentLang;
+	var $keys;
+
+	public function __construct() {
+		$this->cache = wfGetCache( CACHE_ACCEL );
+	}
+
+	public function get( $code, $key ) {
+		$k = wfMemcKey( 'l10n', $code, 'k', $key );
+		$r = $this->cache->get( $k );
+		if ( $r === false ) return null;
+		return $r;
+	}
+
+	public function startWrite( $code ) {
+		$k = wfMemcKey( 'l10n', $code, 'l' );
+		$keys = $this->cache->get( $k );
+		if ( $keys ) {
+			foreach ( $keys as $k ) {
+				$this->cache->delete( $k );
+			}
+		}
+		$this->currentLang = $code;
+		$this->keys = array();
+	}
+
+	public function finishWrite() {
+		if ( $this->currentLang ) {
+			$k = wfMemcKey( 'l10n', $this->currentLang, 'l' );
+			$this->cache->set( $k, array_keys( $this->keys ) );
+		}
+		$this->currentLang = null;
+		$this->keys = array();
+	}
+
+	public function set( $key, $value ) {
+		if ( $this->currentLang ) {
+			$k = wfMemcKey( 'l10n', $this->currentLang, 'k', $key );
+			$this->keys[$k] = true;
+			$this->cache->set( $k, $value );
+		}
+	}
+}
+
 /**
  * LCStore implementation which uses the standard DB functions to store data.
  * This will work on any MediaWiki installation.
@@ -1126,4 +1186,4 @@ class LocalisationCache_BulkLoad extends LocalisationCache {
 			$this->unload( $code );
 		}
 	}
-}
+}
\ No newline at end of file
-- 
2.20.1