[ticket/15276] Add methods to get file info

PHPBB3-15276

phpBB/phpbb/storage/file_info.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+namespace phpbb\storage;
+
+use phpbb\storage\exception\not_implemented;
+
+class file_info
+{
+	protected $adapter;
+
+	protected $path;
+
+	protected $properties;
+
+	public function __construct($adapter, $path)
+	{
+		$this->adapter = $adapter;
+		$this->path = $path;
+	}
+
+	protected function fill_properties($path)
+	{
+		if ($this->properties === null)
+		{
+			$this->properties = [];
+
+			foreach($this->adapter->get_file_info($this->path) as $name => $value) {
+				$this->properties[$name] = $value;
+			}
+		}
+	}
+
+	public function get($name)
+	{
+		$this->fill_properties();
+
+		if (!isset($this->properties[$name]))
+		{
+			if (!method_exists($this->adapter, 'get_' . $name))
+			{
+				throw new not_implemented();
+			}
+
+			$this->properties[$name] = call_user_func($this->adapter, 'get_' . $name);
+		}
+
+		return $this->properties[$name];
+	}
+
+	public function __get($name)
+	{
+		return $this->get($name);
+	}
+}