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user/plugins/mediaembed/classes/Autoloader.php

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+<?php
+/**
+ * Autoloader
+ *
+ * This file is part of Grav MediaEmbed plugin.
+ *
+ * Dual licensed under the MIT or GPL Version 3 licenses, see LICENSE.
+ * http://benjamin-regler.de/license/
+ */
+
+namespace Grav\Plugin\MediaEmbed;
+
+/**
+ * Autoloader
+ */
+class Autoloader
+{
+	protected $routes = [];
+
+	public function __construct($routes = [])
+	{
+
+		// Set routes for autoloading
+    if (!is_array($routes) || count($routes) == 0) {
+      $routes = [__NAMESPACE__ => __DIR__];
+    }
+
+    $this->route($routes);
+	}
+
+  public function route($var = null, $reset = true)
+  {
+    if ($var !== null && is_array($var)) {
+      if ($reset) {
+         $this->routes = [];
+      }
+
+      // Setup routes
+      foreach ($var as $prefix => $path) {
+        if (false !== strrpos($prefix, '\\')) {
+          // Prefix is a namespaced path
+          $prefix = rtrim($prefix, '_\\') . '\\';
+        } else {
+          // Prefix contain underscores
+          $prefix = rtrim($prefix, '_') . '_';
+        }
+
+        $this->routes[$prefix] = rtrim($path, '/\\') . '/';
+      }
+    }
+
+    return $this->routes;
+  }
+
+	/**
+   * Autoload classes
+   *
+   * @param  string $class Class name
+   *
+   * @return mixed  false  FALSE if unable to load $class; Class name if
+   *                       $class is successfully loaded
+   */
+  public function autoload($class)
+  {
+    foreach ($this->routes as $prefix => $path) {
+      // Only load classes of MediaEmbed plugin
+      if (false !== strpos($class, $prefix)) {
+        // Remove prefix from class
+        $class = substr($class, strlen($prefix));
+
+        // Replace namespace tokens to directory separators
+        $file = $path . preg_replace('#\\\|_(?!.+\\\)#', '/', $class) . '.php';
+
+        // Load class
+        if (stream_resolve_include_path($file)) {
+          return include_once($file);
+        }
+
+        return false;
+      }
+    }
+
+  	return false;
+  }
+
+	/**
+   * Registers this instance as an autoloader
+   *
+   * @param bool $prepend Whether to prepend the autoloader or not
+   */
+	public function register($prepend = false)
+	{
+		spl_autoload_register(array($this, 'autoload'), false, $prepend);
+  }
+
+  /**
+   * Unregisters this instance as an autoloader
+   */
+  public function unregister()
+  {
+  	spl_autoload_unregister(array($this, 'autoload'));
+  }
+}