feat: move autoload functionality to its own file

Author: MissAllSunday

Sources/Autoloader.php

@@ -15,74 +15,32 @@
 
 namespace SMF;
 
-/*
- * An autoloader for certain classes.
- *
- * @param string $class The fully-qualified class name.
- */
-spl_autoload_register(function ($class) {
-	static $hook_value = '';
 
-	static $class_map = [
-		// Some special cases.
-		'ReCaptcha\\' => 'ReCaptcha/',
-		'MatthiasMullie\\Minify\\' => 'minify/src/',
-		'MatthiasMullie\\PathConverter\\' => 'minify/path-converter/src/',
-		'ZxcvbnPhp\\' => 'ZxcvbnPhp/',
+$loader = require Config::$vendordir . '/autoload.php';
+$third_party_mappers = [];
 
-		// In general, the SMF namespace maps to $sourcedir.
-		'SMF\\' => '',
-	];
+// Ensure $sourcedir is set to something valid.
+if (class_exists(Config::class, false) && isset(Config::$sourcedir)) {
+	$sourcedir = Config::$sourcedir;
+}
 
-	// Ensure $sourcedir is set to something valid.
-	if (class_exists(Config::class, false) && isset(Config::$sourcedir)) {
-		$sourcedir = Config::$sourcedir;
-	}
+if (empty($sourcedir) || !is_dir($sourcedir)) {
+	$sourcedir = __DIR__;
+}
 
-	if (empty($sourcedir) || !is_dir($sourcedir)) {
-		$sourcedir = __DIR__;
+// Do any third-party scripts want in on the fun?
+if (!defined('SMF_INSTALLING') && class_exists(Config::class, false)) {
+	if (!class_exists(IntegrationHook::class, false) && is_file($sourcedir . '/IntegrationHook.php')) {
+		require_once $sourcedir . '/IntegrationHook.php';
 	}
 
-	// Do any third-party scripts want in on the fun?
-	if (!defined('SMF_INSTALLING') && class_exists(Config::class, false) && $hook_value !== (Config::$modSettings['integrate_autoload'] ?? '')) {
-		if (!class_exists(IntegrationHook::class, false) && is_file($sourcedir . '/IntegrationHook.php')) {
-			require_once $sourcedir . '/IntegrationHook.php';
-		}
-
-		if (class_exists(IntegrationHook::class, false)) {
-			$hook_value = Config::$modSettings['integrate_autoload'];
-			IntegrationHook::call('integrate_autoload', [&$class_map]);
-		}
+	if (class_exists(IntegrationHook::class, false)) {
+		IntegrationHook::call('integrate_autoload', [&$third_party_mappers]);
 	}
+}
 
-	foreach ($class_map as $prefix => $dirname) {
-		// Does the class use the namespace prefix?
-		$len = strlen($prefix);
-
-		if (strncmp($prefix, $class, $len) !== 0) {
-			continue;
-		}
-
-		// Get the relative class name.
-		$relative_class = substr($class, $len);
-
-		// Replace the namespace prefix with the base directory, replace namespace
-		// separators with directory separators in the relative class name, append
-		// with .php
-		$filename = $dirname . strtr($relative_class, '\\', '/') . '.php';
-
-		// Failsafe: Never load a file named index.php.
-		if (basename($filename) === 'index.php') {
-			return;
-		}
-
-		// If the file exists, require it.
-		if (file_exists($filename = $sourcedir . '/' . $filename)) {
-			require $filename;
-
-			return;
-		}
-	}
-});
+foreach ($third_party_mappers as $prefix => $dirname) {
+	$loader->addPsr4($prefix, $dirname);
+}
 
 ?>