Extract a ResourceLoader unit from PluginBase

this will allow addressing the resource accessing crash issue for script plugins, once fully implemented.

src/pocketmine/plugin/DiskResourceProvider.php

@@ -0,0 +1,83 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\plugin;
+
+use function file_exists;
+use function fopen;
+use function is_dir;
+use function rtrim;
+use function str_replace;
+use function strlen;
+use function substr;
+use const DIRECTORY_SEPARATOR;
+
+/**
+ * Provides resources from the given plugin directory on disk. The path may be prefixed with a specific access protocol
+ * to enable special types of access.
+ */
+class DiskResourceProvider implements ResourceProvider{
+
+	/** @var string */
+	private $file;
+
+	public function __construct(string $path){
+		$this->file = rtrim($path, "/\\") . "/";
+	}
+
+	/**
+	 * Gets an embedded resource on the plugin file.
+	 * WARNING: You must close the resource given using fclose()
+	 *
+	 * @param string $filename
+	 *
+	 * @return null|resource Resource data, or null
+	 */
+	public function getResource(string $filename){
+		$filename = rtrim(str_replace("\\", "/", $filename), "/");
+		if(file_exists($this->file . "/resources/" . $filename)){
+			return fopen($this->file . "/resources/" . $filename, "rb");
+		}
+
+		return null;
+	}
+
+	/**
+	 * Returns all the resources packaged with the plugin in the form ["path/in/resources" => SplFileInfo]
+	 *
+	 * @return \SplFileInfo[]
+	 */
+	public function getResources() : array{
+		$resources = [];
+		if(is_dir($this->file . "resources/")){
+			foreach(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->file . "resources/")) as $resource){
+				if($resource->isFile()){
+					$path = str_replace(DIRECTORY_SEPARATOR, "/", substr((string) $resource, strlen($this->file . "resources/")));
+					$resources[$path] = $resource;
+				}
+			}
+		}
+
+		return $resources;
+	}
+}

src/pocketmine/plugin/Plugin.php

@@ -34,7 +34,7 @@ use pocketmine\Server;
  */
 interface Plugin{
 
-	public function __construct(PluginLoader $loader, Server $server, PluginDescription $description, string $dataFolder, string $file);
+	public function __construct(PluginLoader $loader, Server $server, PluginDescription $description, string $dataFolder, string $file, ResourceProvider $resourceProvider);
 
 	/**
 	 * @return bool

src/pocketmine/plugin/PluginBase.php

@@ -39,18 +39,13 @@ use function fopen;
 use function gettype;
 use function is_array;
 use function is_bool;
-use function is_dir;
 use function is_string;
 use function mkdir;
 use function rtrim;
-use function str_replace;
 use function stream_copy_to_stream;
-use function strlen;
 use function strpos;
 use function strtolower;
-use function substr;
 use function trim;
-use const DIRECTORY_SEPARATOR;
 
 abstract class PluginBase implements Plugin, CommandExecutor{
 
@@ -81,15 +76,20 @@ abstract class PluginBase implements Plugin, CommandExecutor{
 	/** @var TaskScheduler */
 	private $scheduler;
 
-	public function __construct(PluginLoader $loader, Server $server, PluginDescription $description, string $dataFolder, string $file){
+	/** @var ResourceProvider */
+	private $resourceProvider;
+
+	public function __construct(PluginLoader $loader, Server $server, PluginDescription $description, string $dataFolder, string $file, ResourceProvider $resourceProvider){
 		$this->loader = $loader;
 		$this->server = $server;
 		$this->description = $description;
 		$this->dataFolder = rtrim($dataFolder, "\\/") . "/";
+		//TODO: this is accessed externally via reflection, not unused
 		$this->file = rtrim($file, "\\/") . "/";
 		$this->configFile = $this->dataFolder . "config.yml";
 		$this->logger = new PluginLogger($this);
 		$this->scheduler = new TaskScheduler($this->getFullName());
+		$this->resourceProvider = $resourceProvider;
 
 		$this->onLoad();
 
@@ -263,12 +263,7 @@ abstract class PluginBase implements Plugin, CommandExecutor{
 	 * @return null|resource Resource data, or null
 	 */
 	public function getResource(string $filename){
-		$filename = rtrim(str_replace("\\", "/", $filename), "/");
-		if(file_exists($this->file . "resources/" . $filename)){
-			return fopen($this->file . "resources/" . $filename, "rb");
-		}
-
-		return null;
+		return $this->resourceProvider->getResource($filename);
 	}
 
 	/**
@@ -309,17 +304,7 @@ abstract class PluginBase implements Plugin, CommandExecutor{
 	 * @return \SplFileInfo[]
 	 */
 	public function getResources() : array{
-		$resources = [];
-		if(is_dir($this->file . "resources/")){
-			foreach(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->file . "resources/")) as $resource){
-				if($resource->isFile()){
-					$path = str_replace(DIRECTORY_SEPARATOR, "/", substr((string) $resource, strlen($this->file . "resources/")));
-					$resources[$path] = $resource;
-				}
-			}
-		}
-
-		return $resources;
+		return $this->resourceProvider->getResources();
 	}
 
 	/**

src/pocketmine/plugin/PluginManager.php

@@ -183,7 +183,7 @@ class PluginManager{
 					 * @var Plugin $plugin
 					 * @see Plugin::__construct()
 					 */
-					$plugin = new $mainClass($loader, $this->server, $description, $dataFolder, $prefixed);
+					$plugin = new $mainClass($loader, $this->server, $description, $dataFolder, $prefixed, new DiskResourceProvider($prefixed . "/"));
 					$this->plugins[$plugin->getDescription()->getName()] = $plugin;
 
 					return $plugin;

src/pocketmine/plugin/ResourceProvider.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\plugin;
+
+interface ResourceProvider{
+	/**
+	 * Gets an embedded resource on the plugin file.
+	 * WARNING: You must close the resource given using fclose()
+	 *
+	 * @param string $filename
+	 *
+	 * @return null|resource Resource data, or null
+	 */
+	public function getResource(string $filename);
+
+	/**
+	 * Returns all the resources packaged with the plugin in the form ["path/in/resources" => SplFileInfo]
+	 *
+	 * @return \SplFileInfo[]
+	 */
+	public function getResources() : array;
+}