[ticket/16955] Use common code for path iterator generation

PHPBB3-16955

phpBB/phpbb/iterator/recursive_dot_prefix_filter_iterator.php

@@ -0,0 +1,30 @@
+<?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\iterator;
+
+/**
+* Class recursive_dot_prefix_filter_iterator
+*
+* This filter ignores directories starting with a dot.
+* When searching for php classes and template files of extensions
+* we don't need to look inside these directories.
+*/
+class recursive_dot_prefix_filter_iterator extends \RecursiveFilterIterator
+{
+	public function accept()
+	{
+		$filename = $this->current()->getFilename();
+		return $filename[0] !== '.' || !$this->current()->isDir();
+	}
+}

phpBB/phpbb/iterator/recursive_path_iterator.php

@@ -0,0 +1,47 @@
+<?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.
+ *
+ */
+
+declare(strict_types=1);
+
+namespace phpbb\iterator;
+
+class recursive_path_iterator extends \RecursiveIteratorIterator
+{
+	/**
+	 * Constructor
+	 *
+	 * @param string $path Path to iterate over
+	 * @param int $mode Iterator mode
+	 * @param int $flags Flags
+	 */
+	public function __construct(string $path, int $mode = self::LEAVES_ONLY, int $flags = \FilesystemIterator::SKIP_DOTS)
+	{
+		parent::__construct(
+			new recursive_dot_prefix_filter_iterator(new \RecursiveDirectoryIterator($path, $flags)),
+			\RecursiveIteratorIterator::SELF_FIRST
+		);
+	}
+
+	/**
+	 * Get inner iterator
+	 *
+	 * @return recursive_dot_prefix_filter_iterator
+	 */
+	public function getInnerIterator(): \RecursiveIterator
+	{
+		$inner_iterator = parent::getInnerIterator();
+
+		assert($inner_iterator instanceof recursive_dot_prefix_filter_iterator);
+		return $inner_iterator;
+	}
+}