first commit

system/engine/autoloader.php

@@ -0,0 +1,81 @@
+<?php
+/**
+ * @package     OpenCart
+ * @author      Daniel Kerr
+ * @copyright   Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license     https://opensource.org/licenses/GPL-3.0
+ * @link        https://www.opencart.com
+ */
+namespace Opencart\System\Engine;
+/**
+ * Class Autoloader
+ */
+class Autoloader {
+	/**
+	 * @var array
+	 */
+	private array $path = [];
+
+	/**
+	 * Constructor
+	 */
+	public function __construct() {
+		spl_autoload_register([$this, 'load']);
+		spl_autoload_extensions('.php');
+	}
+
+	/**
+	 * Register
+	 *
+	 * @param    string  $namespace
+	 * @param    string  $directory
+	 * @param    bool  $psr4
+	 *
+	 * @return   void
+	 *
+	 * @psr-4 filename standard is stupid composer has lower case file structure than its packages have camelcase file names!
+	 */	
+	public function register(string $namespace, string $directory, $psr4 = false): void {
+		$this->path[$namespace] = [
+			'directory' => $directory,
+			'psr4'      => $psr4
+		];
+	}
+	
+	/**
+	 * Load
+	 *
+	 * @param    string  $class
+	 *
+	 * @return	 bool
+	 */
+	public function load(string $class): bool {
+		$namespace = '';
+
+		$parts = explode('\\', $class);
+
+		foreach ($parts as $part) {
+			if (!$namespace) {
+				$namespace .= $part;
+			} else {
+				$namespace .= '\\' . $part;
+			}
+
+			if (isset($this->path[$namespace])) {
+				if (!$this->path[$namespace]['psr4']) {
+					$file = $this->path[$namespace]['directory'] . trim(str_replace('\\', '/', strtolower(preg_replace('~([a-z])([A-Z]|[0-9])~', '\\1_\\2', substr($class, strlen($namespace))))), '/') . '.php';
+				} else {
+					$file = $this->path[$namespace]['directory'] . trim(str_replace('\\', '/', substr($class, strlen($namespace))), '/') . '.php';
+				}
+			}
+		}
+
+		if (isset($file) && is_file($file)) {
+			include_once($file);
+
+			return true;
+		} else {
+			return false;
+		}
+	}
+}