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

---
 maintenance/rebuildLocalisationCache.php | 133 +++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 maintenance/rebuildLocalisationCache.php

(limited to 'maintenance/rebuildLocalisationCache.php')

diff --git a/maintenance/rebuildLocalisationCache.php b/maintenance/rebuildLocalisationCache.php
new file mode 100644
index 00000000..1c517415
--- /dev/null
+++ b/maintenance/rebuildLocalisationCache.php
@@ -0,0 +1,133 @@
+<?php
+
+/**
+ * Rebuild the localisation cache. Useful if you disabled automatic updates
+ * using $wgLocalisationCacheConf['manualRecache'] = true;
+ *
+ * Usage:
+ *    php rebuildLocalisationCache.php [--force] [--threads=N]
+ *
+ * Use --force to rebuild all files, even the ones that are not out of date.
+ * Use --threads=N to fork more threads.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @ingroup Maintenance
+ */
+
+require_once( dirname(__FILE__) . '/Maintenance.php' );
+
+class RebuildLocalisationCache extends Maintenance {
+	public function __construct() {
+		parent::__construct();
+		$this->mDescription = "Rebuild the localisation cache";
+		$this->addOption( 'force', 'Rebuild all files, even ones not out of date' );
+		$this->addOption( 'threads', 'Fork more than one thread', false, true );
+	}
+	
+	public function memoryLimit() {
+		return '200M';
+	}
+
+	public function execute() {
+		global $wgLocalisationCacheConf;
+
+		$force = $this->hasOption('force');
+		$threads = $this->getOption( 'threads', 1 );
+		if( $threads < 1 || $threads != intval( $threads ) ) {
+			$this->output( "Invalid thread count specified; running single-threaded.\n" );
+			$threads = 1;
+		}
+		if( $threads > 1 && wfIsWindows() ) {
+			$this->output( "Threaded rebuild is not supported on Windows; running single-threaded.\n" );
+			$threads = 1;
+		}
+		if( $threads > 1 && !function_exists( 'pcntl_fork' ) ) {
+			$this->output( "PHP pcntl extension is not present; running single-threaded.\n" );
+			$threads = 1;
+		}
+
+		$conf = $wgLocalisationCacheConf;
+		$conf['manualRecache'] = false; // Allow fallbacks to create CDB files
+		if ( $force ) {
+			$conf['forceRecache'] = true;
+		}
+		$lc = new LocalisationCache_BulkLoad( $conf );
+
+		$codes = array_keys( Language::getLanguageNames( true ) );
+		sort( $codes );
+
+		// Initialise and split into chunks
+		$numRebuilt = 0;
+		$total = count($codes);
+		$chunks = array_chunk( $codes, ceil(count($codes)/$threads) );
+		$pids = array();
+		foreach ( $chunks as $codes ) {
+			// Do not fork for only one thread
+			$pid = ( $threads > 1 ) ? pcntl_fork() : -1;
+
+			if ( $pid === 0 ) {
+				// Child, reseed because there is no bug in PHP:
+				// http://bugs.php.net/bug.php?id=42465
+				mt_srand(getmypid());
+				$numRebuilt = $this->doRebuild( $codes, $lc, $force );
+				// Abuse the exit value for the count of rebuild languages
+				exit($numRebuilt);
+			} elseif ($pid === -1) {
+				// Fork failed or one thread, do it serialized
+				$numRebuilt += $this->doRebuild( $codes, $lc, $force );
+			} else {
+				// Main thread
+				$pids[] = $pid;
+			}
+		}
+		// Wait for all children
+		foreach ( $pids as $pid ) {
+			$status = 0;
+			pcntl_waitpid($pid, $status);
+			// Fetch the count from the return value
+			$numRebuilt += pcntl_wexitstatus($status);
+		}
+
+		$this->output( "$numRebuilt languages rebuilt out of $total\n" );
+		if ( $numRebuilt === 0 ) {
+			$this->output( "Use --force to rebuild the caches which are still fresh.\n" );
+		}
+	}
+
+	/**
+	 * Helper function to rebuild list of languages codes. Prints the code
+	 * for each language which is rebuilt.
+	 * @param $codes  list  List of language codes to rebuild.
+	 * @param $lc  object  Instance of LocalisationCache_BulkLoad (?)
+	 * @param $force  bool  Rebuild up-to-date languages
+	 * @return  int  Number of rebuilt languages
+	 */
+	private function doRebuild( $codes, $lc, $force ) {
+		$numRebuilt = 0;
+		foreach ( $codes as $code ) {
+			if ( $force || $lc->isExpired( $code ) ) {
+				$this->output( "Rebuilding $code...\n" );
+				$lc->recache( $code );
+				$numRebuilt++;
+			}
+		}
+		return $numRebuilt;
+	}
+}
+
+$maintClass = "RebuildLocalisationCache";
+require_once( DO_MAINTENANCE );
-- 
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