Introduce classes `Libraries` and `Library`

library/Icinga/Application/Libraries.php

@@ -0,0 +1,39 @@
+<?php
+/* Icinga Web 2 | (c) 2020 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Application;
+
+use ArrayIterator;
+use IteratorAggregate;
+use Icinga\Application\Libraries\Library;
+
+class Libraries implements IteratorAggregate
+{
+    /** @var Library[] */
+    protected $libraries = [];
+
+    /**
+     * Iterate over registered libraries
+     *
+     * @return ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->libraries);
+    }
+
+    /**
+     * Register a library from the given path
+     *
+     * @param string $path
+     *
+     * @return Library The registered library
+     */
+    public function registerPath($path)
+    {
+        $library = new Library($path);
+        $this->libraries[] = $library;
+
+        return $library;
+    }
+}

library/Icinga/Application/Libraries/Library.php

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+<?php
+/* Icinga Web 2 | (c) 2020 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Application\Libraries;
+
+class Library
+{
+    protected $path;
+
+    /**
+     * Create a new Library
+     *
+     * @param string $path
+     */
+    public function __construct($path)
+    {
+        $this->path = $path;
+    }
+
+    /**
+     * Register this library's autoloader
+     *
+     * @return void
+     */
+    public function registerAutoloader()
+    {
+        $autoloaderPath = join(DIRECTORY_SEPARATOR, [$this->path, 'vendor', 'autoload.php']);
+        if (file_exists($autoloaderPath)) {
+            require_once $autoloaderPath;
+        }
+    }
+}