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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 {
/**
* A mapping of namespace => file path for MediaWiki core.
* 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
* @phpcs-require-sorted-array
*/
public const CORE_NAMESPACES = [
'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\\Collation\\' => __DIR__ . '/collation/',
'MediaWiki\\Composer\\' => __DIR__ . '/composer/',
'MediaWiki\\Config\\' => __DIR__ . '/config/',
'MediaWiki\\Content\\' => __DIR__ . '/content/',
'MediaWiki\\Context\\' => __DIR__ . '/context/',
'MediaWiki\\DAO\\' => __DIR__ . '/dao/',
'MediaWiki\\DB\\' => __DIR__ . '/db/',
'MediaWiki\\Debug\\' => __DIR__ . '/debug/',
'MediaWiki\\Deferred\\' => __DIR__ . '/deferred/',
'MediaWiki\\Deferred\\LinksUpdate\\' => __DIR__ . '/deferred/LinksUpdate/',
'MediaWiki\\Diff\\' => __DIR__ . '/diff/',
'MediaWiki\\EditPage\\' => __DIR__ . '/editpage/',
'MediaWiki\\Edit\\' => __DIR__ . '/edit/',
'MediaWiki\\Exception\\' => __DIR__ . '/exception/',
'MediaWiki\\Export\\' => __DIR__ . '/export/',
'MediaWiki\\FileBackend\\' => __DIR__ . '/filebackend/',
'MediaWiki\\FileBackend\\FSFile\\' => __DIR__ . '/libs/filebackend/fsfile/',
'MediaWiki\\FileBackend\\LockManager\\' => __DIR__ . '/filebackend/lockmanager/',
'MediaWiki\\FileRepo\\' => __DIR__ . '/filerepo/',
'MediaWiki\\FileRepo\\File\\' => __DIR__ . '/filerepo/file/',
'MediaWiki\\HTMLForm\\' => __DIR__ . '/htmlform/',
'MediaWiki\\HTMLForm\\Field\\' => __DIR__ . '/htmlform/fields/',
'MediaWiki\\Http\\' => __DIR__ . '/http/',
'MediaWiki\\Installer\\' => __DIR__ . '/installer/',
'MediaWiki\\Interwiki\\' => __DIR__ . '/interwiki/',
'MediaWiki\\JobQueue\\' => __DIR__ . '/jobqueue/',
'MediaWiki\\JobQueue\\Exceptions\\' => __DIR__ . '/jobqueue/exception/',
'MediaWiki\\JobQueue\\Jobs\\' => __DIR__ . '/jobqueue/jobs/',
'MediaWiki\\JobQueue\\Utils\\' => __DIR__ . '/jobqueue/utils/',
'MediaWiki\\Json\\' => __DIR__ . '/json/',
'MediaWiki\\Languages\\' => __DIR__ . '/language/',
'MediaWiki\\Languages\\Data\\' => __DIR__ . '/languages/data/',
'MediaWiki\\Language\\' => __DIR__ . '/language/',
'MediaWiki\\Libs\\' => __DIR__ . '/libs/',
'MediaWiki\\LinkedData\\' => __DIR__ . '/linkeddata/',
'MediaWiki\\Linker\\' => __DIR__ . '/linker/',
'MediaWiki\\Logger\\' => __DIR__ . '/debug/logger/',
'MediaWiki\\Logger\\Monolog\\' => __DIR__ . '/debug/logger/monolog/',
'MediaWiki\\Logging\\' => __DIR__ . '/logging/',
'MediaWiki\\Mail\\' => __DIR__ . '/mail/',
'MediaWiki\\Maintenance\\' => __DIR__ . '/../maintenance/includes/',
'MediaWiki\\Page\\' => __DIR__ . '/page/',
'MediaWiki\\Parser\\' => __DIR__ . '/parser/',
'MediaWiki\\Password\\' => __DIR__ . '/password/',
'MediaWiki\\PoolCounter\\' => __DIR__ . '/poolcounter/',
'MediaWiki\\Preferences\\' => __DIR__ . '/preferences/',
'MediaWiki\\Profiler\\' => __DIR__ . '/profiler/',
'MediaWiki\\RCFeed\\' => __DIR__ . '/recentchanges/RCFeed/',
'MediaWiki\\RecentChanges\\' => __DIR__ . '/recentchanges/',
'MediaWiki\\Registration\\' => __DIR__ . '/registration/',
'MediaWiki\\RevisionList\\' => __DIR__ . '/revisionlist/',
'MediaWiki\\Search\\' => __DIR__ . '/search/',
'MediaWiki\\Search\\SearchWidgets\\' => __DIR__ . '/search/searchwidgets/',
'MediaWiki\\Session\\' => __DIR__ . '/session/',
'MediaWiki\\Shell\\' => __DIR__ . '/shell/',
'MediaWiki\\Site\\' => __DIR__ . '/site/',
'MediaWiki\\Skin\\' => __DIR__ . '/skins/',
'MediaWiki\\Sparql\\' => __DIR__ . '/sparql/',
'MediaWiki\\SpecialPage\\' => __DIR__ . '/specialpage/',
'MediaWiki\\Specials\\' => __DIR__ . '/specials/',
'MediaWiki\\Specials\\Contribute\\' => __DIR__ . '/specials/Contribute/',
'MediaWiki\\Specials\\Redirects\\' => __DIR__ . '/specials/redirects/',
'MediaWiki\\Telemetry\\' => __DIR__ . '/telemetry/',
'MediaWiki\\Tidy\\' => __DIR__ . '/tidy/',
'MediaWiki\\Title\\' => __DIR__ . '/title/',
'MediaWiki\\User\\' => __DIR__ . '/user/',
'MediaWiki\\Utils\\' => __DIR__ . '/utils/',
'MediaWiki\\Watchlist\\' => __DIR__ . '/watchlist/',
'MediaWiki\\Widget\\' => __DIR__ . '/widget/',
'MediaWiki\\Xml\\' => __DIR__ . '/xml/',
'Wikimedia\\' => __DIR__ . '/libs/',
'Wikimedia\\ArrayUtils\\' => __DIR__ . '/libs/',
'Wikimedia\\Composer\\' => __DIR__ . '/libs/composer/',
'Wikimedia\\DependencyStore\\' => __DIR__ . '/ResourceLoader/dependencystore/',
'Wikimedia\\EventRelayer\\' => __DIR__ . '/libs/eventrelayer/',
'Wikimedia\\FileBackend\\' => __DIR__ . '/libs/filebackend/',
'Wikimedia\\FileBackend\\FileIteration\\' => __DIR__ . '/libs/filebackend/fileiteration/',
'Wikimedia\\FileBackend\\FileOpHandle\\' => __DIR__ . '/libs/filebackend/fileophandle/',
'Wikimedia\\FileBackend\\FileOps\\' => __DIR__ . '/libs/filebackend/fileop/',
'Wikimedia\\FileBackend\\FSFile\\' => __DIR__ . '/libs/filebackend/fsfile/',
'Wikimedia\\HashRing\\' => __DIR__ . '/libs/',
'Wikimedia\\HtmlArmor\\' => __DIR__ . '/libs/',
'Wikimedia\\Http\\' => __DIR__ . '/libs/http/',
'Wikimedia\\LightweightObjectStore\\' => __DIR__ . '/libs/objectcache/utils/',
'Wikimedia\\MapCacheLRU\\' => __DIR__ . '/libs/',
'Wikimedia\\Mime\\' => __DIR__ . '/libs/mime/',
'Wikimedia\\NonSerializable\\' => __DIR__ . '/libs/',
'Wikimedia\\ObjectCache\\' => __DIR__ . '/libs/objectcache/',
'Wikimedia\\Rdbms\\Database\\' => __DIR__ . '/libs/rdbms/database/',
'Wikimedia\\Rdbms\\Platform\\' => __DIR__ . '/libs/rdbms/platform/',
'Wikimedia\\Rdbms\\Replication\\' => __DIR__ . '/libs/rdbms/database/replication/',
'Wikimedia\\StringUtils\\' => __DIR__ . '/libs/',
'Wikimedia\\Telemetry\\' => __DIR__ . '/libs/telemetry/',
'Wikimedia\\Timing\\' => __DIR__ . '/libs/',
'Wikimedia\\UUID\\' => __DIR__ . '/libs/uuid/',
];
/**
* @var string[] Namespace (ends with \) => Path (ends with /)
*/
private static $psr4Namespaces = self::CORE_NAMESPACES;
/**
* @var string[] Class => File
*/
private static $classFiles = [];
/**
* Register a directory to load the classes of a given namespace from,
* per PSR4.
*
* @see <https://www.php-fig.org/psr/psr-4/>
* @since 1.39
* @param string[] $dirs a map of namespace (ends with \) to path (ends with /)
*/
public static function registerNamespaces( array $dirs ): void {
self::$psr4Namespaces += $dirs;
}
/**
* Register a file to load the given class from.
* @since 1.39
*
* @param string[] $files a map of qualified class names to file names
*/
public static function registerClasses( array $files ): void {
self::$classFiles += $files;
}
/**
* Load a file that declares classes, functions, or constants.
* The file will be loaded immediately using require_once in function scope.
*
* @note The file to be loaded MUST NOT set global variables or otherwise
* affect the global state. It MAY however use conditionals to determine
* what to declare and how, e.g. to provide polyfills.
*
* @note The file to be loaded MUST NOT assume that MediaWiki has been
* initialized. In particular, it MUST NOT access configuration variables
* or MediaWikiServices.
*
* @since 1.39
*
* @param string $file the path of the file to load.
*/
public static function loadFile( string $file ): void {
require_once $file;
}
/**
* Batch version of loadFile()
*
* @see loadFile()
*
* @since 1.39
*
* @param string[] $files the paths of the files to load.
*/
public static function loadFiles( array $files ): void {
foreach ( $files as $f ) {
self::loadFile( $f );
}
}
/**
* 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;
// NOTE: $wgAutoloadClasses is supported for compatibility with old-style extension
// registration files.
$filename = $wgAutoloadLocalClasses[$className] ??
self::$classFiles[$className] ??
$wgAutoloadClasses[$className] ??
false;
if ( !$filename && strpos( $className, '\\' ) !== false ) {
// This class is namespaced, so look in the namespace map
$prefix = $className;
// phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition
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 ( is_file( $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] !== ':' ) {
$filename = __DIR__ . '/../' . $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_once $filename;
}
}
///// Methods used during testing //////////////////////////////////////////////
private static function assertTesting( $method ) {
if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
throw new LogicException( "$method is not supported outside phpunit tests!" );
}
}
/**
* Returns a map of class names to file paths for testing.
* @note Will throw if called outside of phpunit tests!
* @return string[]
*/
public static function getClassFiles(): array {
global $wgAutoloadLocalClasses, $wgAutoloadClasses;
self::assertTesting( __METHOD__ );
// NOTE: ensure the order of preference is the same as used by find().
return array_merge(
$wgAutoloadClasses,
self::$classFiles,
$wgAutoloadLocalClasses
);
}
/**
* Returns a map of namespace names to directories, per PSR4.
* @note Will throw if called outside of phpunit tests!
* @return string[]
*/
public static function getNamespaceDirectories(): array {
self::assertTesting( __METHOD__ );
return self::$psr4Namespaces;
}
/**
* Returns an array representing the internal state of Autoloader,
* so it can be remembered and later restored during testing.
* @internal
* @note Will throw if called outside of phpunit tests!
* @return array
*/
public static function getState(): array {
self::assertTesting( __METHOD__ );
return [
'classFiles' => self::$classFiles,
'psr4Namespaces' => self::$psr4Namespaces,
];
}
/**
* Returns an array representing the internal state of Autoloader,
* so it can be remembered and later restored during testing.
* @internal
* @note Will throw if called outside of phpunit tests!
*
* @param array $state A state array returned by getState().
*/
public static function restoreState( $state ): void {
self::assertTesting( __METHOD__ );
self::$classFiles = $state['classFiles'];
self::$psr4Namespaces = $state['psr4Namespaces'];
}
}
spl_autoload_register( [ 'AutoLoader', 'autoload' ] );
// Load composer's autoloader if present
if ( is_readable( __DIR__ . '/../vendor/autoload.php' ) ) {
require_once __DIR__ . '/../vendor/autoload.php';
} elseif ( file_exists( __DIR__ . '/../vendor/autoload.php' ) ) {
die( __DIR__ . '/../vendor/autoload.php exists but is not readable' );
}