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<?php
/**
* This defines autoloading handler for whole MediaWiki framework
*
* 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
*
* @file
*/
// NO_AUTOLOAD -- file scope code, can't load self
/**
* Locations of core classes
* Extension classes are specified with $wgAutoloadClasses
*/
require_once __DIR__ . '/../autoload.php';
class AutoLoader {
protected static $autoloadLocalClassesLower = null;
/**
* @internal Only public for ExtensionRegistry
* @var string[] Namespace (ends with \) => Path (ends with /)
*/
public static $psr4Namespaces = [];
/**
* Find the file containing the given class.
*
* @param string $className Name of class we're looking for.
* @return string|null The path containing the class, not null if not found
*/
public static function find( $className ): ?string {
global $wgAutoloadLocalClasses, $wgAutoloadClasses, $wgAutoloadAttemptLowercase;
$filename = $wgAutoloadLocalClasses[$className] ?? $wgAutoloadClasses[$className] ?? false;
if ( !$filename && $wgAutoloadAttemptLowercase ) {
// Try a different capitalisation.
//
// PHP 4 objects are always serialized with the classname coerced to lowercase,
// and we are plagued with several legacy uses created by MediaWiki < 1.5, see
// https://wikitech.wikimedia.org/wiki/Text_storage_data
if ( self::$autoloadLocalClassesLower === null ) {
self::$autoloadLocalClassesLower = array_change_key_case( $wgAutoloadLocalClasses, CASE_LOWER );
}
$lowerClass = strtolower( $className );
if ( isset( self::$autoloadLocalClassesLower[$lowerClass] ) ) {
if ( function_exists( 'wfDebugLog' ) ) {
wfDebugLog( 'autoloader', "Class {$className} was loaded using incorrect case" );
}
$filename = self::$autoloadLocalClassesLower[$lowerClass];
}
}
if ( !$filename && strpos( $className, '\\' ) !== false ) {
// This class is namespaced, so look in the namespace map
$prefix = $className;
while ( ( $pos = strrpos( $prefix, '\\' ) ) !== false ) {
// Check to see if this namespace prefix is in the map
$prefix = substr( $className, 0, $pos + 1 );
if ( isset( self::$psr4Namespaces[$prefix] ) ) {
$relativeClass = substr( $className, $pos + 1 );
// Build the expected filename, and see if it exists
$file = self::$psr4Namespaces[$prefix] .
'/' .
strtr( $relativeClass, '\\', '/' ) .
'.php';
if ( file_exists( $file ) ) {
$filename = $file;
break;
}
}
// Remove trailing separator for next iteration
$prefix = rtrim( $prefix, '\\' );
}
}
if ( !$filename ) {
// Class not found; let the next autoloader try to find it
return null;
}
// Make an absolute path, this improves performance by avoiding some stat calls
// Optimisation: use string offset access instead of substr
if ( $filename[0] !== '/' && $filename[1] !== ':' ) {
global $IP;
$filename = "$IP/$filename";
}
return $filename;
}
/**
* autoload - take a class name and attempt to load it
*
* @param string $className Name of class we're looking for.
*/
public static function autoload( $className ) {
$filename = self::find( $className );
if ( $filename !== null ) {
require $filename;
}
}
/**
* Method to clear the protected class property $autoloadLocalClassesLower.
* Used in tests.
*/
public static function resetAutoloadLocalClassesLower() {
self::$autoloadLocalClassesLower = null;
}
/**
* Get a mapping of namespace => file path
* The namespaces should follow the PSR-4 standard for autoloading
*
* @see <https://www.php-fig.org/psr/psr-4/>
* @internal Only public for usage in AutoloadGenerator
* @codeCoverageIgnore
* @since 1.31
* @return string[]
*/
public static function getAutoloadNamespaces() {
return [
'MediaWiki\\' => __DIR__ . '/',
'MediaWiki\\Actions\\' => __DIR__ . '/actions/',
'MediaWiki\\Api\\' => __DIR__ . '/api/',
'MediaWiki\\Auth\\' => __DIR__ . '/auth/',
'MediaWiki\\Block\\' => __DIR__ . '/block/',
'MediaWiki\\Cache\\' => __DIR__ . '/cache/',
'MediaWiki\\ChangeTags\\' => __DIR__ . '/changetags/',
'MediaWiki\\Config\\' => __DIR__ . '/config/',
'MediaWiki\\Content\\' => __DIR__ . '/content/',
'MediaWiki\\DB\\' => __DIR__ . '/db/',
'MediaWiki\\Diff\\' => __DIR__ . '/diff/',
'MediaWiki\\Edit\\' => __DIR__ . '/edit/',
'MediaWiki\\EditPage\\' => __DIR__ . '/editpage/',
'MediaWiki\\FileBackend\\LockManager\\' => __DIR__ . '/filebackend/lockmanager/',
'MediaWiki\\JobQueue\\' => __DIR__ . '/jobqueue/',
'MediaWiki\\Json\\' => __DIR__ . '/json/',
'MediaWiki\\Http\\' => __DIR__ . '/http/',
'MediaWiki\\Installer\\' => __DIR__ . '/installer/',
'MediaWiki\\Interwiki\\' => __DIR__ . '/interwiki/',
'MediaWiki\\Languages\\Data\\' => __DIR__ . '/languages/data/',
'MediaWiki\\Linker\\' => __DIR__ . '/linker/',
'MediaWiki\\Logger\\' => __DIR__ . '/debug/logger/',
'MediaWiki\\Logger\Monolog\\' => __DIR__ . '/debug/logger/monolog/',
'MediaWiki\\Mail\\' => __DIR__ . '/mail/',
'MediaWiki\\Page\\' => __DIR__ . '/page/',
'MediaWiki\\Preferences\\' => __DIR__ . '/preferences/',
'MediaWiki\\ResourceLoader\\' => __DIR__ . '/resourceloader/',
'MediaWiki\\Search\\' => __DIR__ . '/search/',
'MediaWiki\\Search\\SearchWidgets\\' => __DIR__ . '/search/searchwidgets/',
'MediaWiki\\Session\\' => __DIR__ . '/session/',
'MediaWiki\\Shell\\' => __DIR__ . '/shell/',
'MediaWiki\\Site\\' => __DIR__ . '/site/',
'MediaWiki\\Sparql\\' => __DIR__ . '/sparql/',
'MediaWiki\\SpecialPage\\' => __DIR__ . '/specialpage/',
'MediaWiki\\Tidy\\' => __DIR__ . '/tidy/',
'MediaWiki\\User\\' => __DIR__ . '/user/',
'MediaWiki\\Widget\\' => __DIR__ . '/widget/',
'Wikimedia\\' => __DIR__ . '/libs/',
'Wikimedia\\Http\\' => __DIR__ . '/libs/http/',
'Wikimedia\\UUID\\' => __DIR__ . '/libs/uuid/',
];
}
}
AutoLoader::$psr4Namespaces = AutoLoader::getAutoloadNamespaces();
spl_autoload_register( [ 'AutoLoader', 'autoload' ] );
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