Extension:AutoLanguage

require('extensions/AutoLanguage/AutoLanguage_stub.php');

<?php
 
$wgExtensionCredits[AutoLanguage::thisType][] = array( 
	'name'        => AutoLanguage::thisName, 
	'version'     => StubManager::getRevisionId( '$Id: AutoLanguage.php 642 2007-08-10 15:35:54Z jeanlou.dupont $' ),
	'author'      => 'Jean-Lou Dupont', 
	'description' => 'Automatic page language switching based on user preference',
	'url' 		=> StubManager::getFullUrl(__FILE__),			
);
 
class AutoLanguage
{
	// constants.
	const thisName = 'AutoLanguage';
	const thisType = 'other';
	//
	static $exemptNamespaces = array( 	NS_CATEGORY,  // special treatement in 'Wiki.php'
										NS_TEMPLATE,  // !
										NS_IMAGE, 	  // special treatement in 'Wiki.php'
										NS_MEDIA, 	  // special treatement in 'Wiki.php'
										NS_SPECIAL,   // !
										NS_MEDIAWIKI  // !
									);
	static $exemptTalkPages = true;
 
	function __construct( ) 
	{
		// automatically register the special namespaces of the BizzWiki platform
		// BUT won't break if not using BizzWiki
		if (defined('NS_BIZZWIKI'))		
			self::$exemptNamespaces[] = NS_BIZZWIKI;
		if (defined('NS_INTERWIKI'))					
			self::$exemptNamespaces[] = NS_INTERWIKI;
		if (defined('NS_FILESYSTEM'))								
			self::$exemptNamespaces[] = NS_FILESYSTEM;
	}
 
	function hArticleFromTitle( &$title, &$article ) 
	{
		global $wgLang, $wgRequest;
 
		if ($wgRequest->getVal( 'redirect' ) == 'no')
			return true;
 
		$ns = $title->getNamespace();
 
		if ( $ns < 0 
			|| in_array($ns,  self::$exemptNamespaces) 
			|| (self::$exemptTalkPages && Namespace::isTalk($ns)) )
		return true;
 
		$n    = $title->getDBKey();
		$lang = $wgLang->getCode();
 
		// case where 'page/' is visited.
		if (!$title->exists() && strlen($n)>1 && preg_match('!/$!', $n))
		{
			$t = Title::makeTitle($ns, substr($n, 0, strlen($n)-1));
			$article = new Article( $t );
 
			// ugly hack to circumvent a shortcoming of
			// wiki::initializeArticle method
			$title->mDbkeyform = $t->getDBkey();
			return true;
		}
 
		// base language is assumed to be 'en',
		// let the normal flow handle this one.
		if ( $lang == 'en' ) 
			return true;	
 
		// case where 'page/$lang' will be the new target
		$title2 = Title::makeTitle($ns, $n . '/' . $lang);
 
		// does the page exist? If not, stick with the base default language page.
		if (!$title2->exists())
			return true;
 
		// same ugly hack again.
		$title->mDbkeyform = $title2->getDBkey();
 
		$article = new Article( $title2 );
 
		return true;
	}
 
} // end class
 
//