first commit

administrator/components/com_akeebabackup/engine/Autoloader.php

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+<?php
+/**
+ * Akeeba Engine
+ *
+ * @package   akeebaengine
+ * @copyright Copyright (c)2006-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
+ * @license   GNU General Public License version 3, or later
+ */
+
+namespace Akeeba\Engine;
+
+defined('AKEEBAENGINE') || die();
+
+/**
+ * The main class autoloader for AkeebaEngine
+ */
+class Autoloader
+{
+	/**
+	 * An instance of this autoloader
+	 *
+	 * @var   Autoloader
+	 */
+	public static $autoloader = null;
+
+	/**
+	 * The path to the Akeeba Engine root directory
+	 *
+	 * @var   string
+	 */
+	public static $enginePath = null;
+
+	/**
+	 * The directories where Akeeba Engine platforms are stored
+	 *
+	 * @var      array
+	 */
+	public static $platformDirs = null;
+
+	/**
+	 * Public constructor. Registers the autoloader with PHP.
+	 */
+	public function __construct()
+	{
+		self::$enginePath = __DIR__;
+
+		spl_autoload_register([$this, 'autoload_akeeba_engine']);
+	}
+
+	/**
+	 * Initialise this autoloader
+	 *
+	 * @return  Autoloader
+	 */
+	public static function init()
+	{
+		if (self::$autoloader == null)
+		{
+			self::$autoloader = new self;
+		}
+
+		return self::$autoloader;
+	}
+
+	/**
+	 * The actual autoloader
+	 *
+	 * @param   string  $className  The name of the class to load
+	 *
+	 * @return  void
+	 */
+	public function autoload_akeeba_engine($className)
+	{
+		// Trim the trailing backslash
+		$className = ltrim($className, '\\');
+
+		// Make sure the class has an Akeeba\Engine prefix
+		if (substr($className, 0, 13) != 'Akeeba\\Engine')
+		{
+			return;
+		}
+
+		// Remove the prefix and explode on backslashes
+		$className = substr($className, 14);
+		$class     = explode('\\', $className);
+
+		// Do we have a list of platform directories?
+		if (is_null(self::$platformDirs) && class_exists('\\Akeeba\\Engine\\Platform', false))
+		{
+			self::$platformDirs = Platform::getPlatformDirectories();
+
+			if (!is_array(self::$platformDirs))
+			{
+				self::$platformDirs = [];
+			}
+		}
+
+		$rootPaths = [self::$enginePath];
+
+		if (is_array(self::$platformDirs))
+		{
+			$rootPaths = array_merge(
+				self::$platformDirs, [self::$enginePath]
+			);
+		}
+
+		foreach ($rootPaths as $rootPath)
+		{
+			// First try finding in structured directory format (preferred)
+			$path = $rootPath . '/' . implode('/', $class) . '.php';
+
+			if (@file_exists($path))
+			{
+				include_once $path;
+			}
+
+			// Then try the duplicate last name structured directory format (not recommended)
+			if (!class_exists($className, false))
+			{
+				reset($class);
+				$lastPart = end($class);
+				$path     = $rootPath . '/' . implode('/', $class) . '/' . $lastPart . '.php';
+
+				if (@file_exists($path))
+				{
+					include_once $path;
+				}
+			}
+		}
+	}
+}
+
+// Register the Akeeba Engine autoloader
+Autoloader::init();