mirror of
https://github.com/phpbb/phpbb.git
synced 2025-02-24 12:03:21 +01:00
55 lines
925 B
PHP
55 lines
925 B
PHP
<?php
|
|
/**
|
|
*
|
|
* @package phpBB3
|
|
* @copyright (c) 2013 phpBB Group
|
|
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
|
|
*
|
|
*/
|
|
|
|
namespace phpbb;
|
|
/**
|
|
* @ignore
|
|
*/
|
|
if (!defined('IN_PHPBB'))
|
|
{
|
|
exit;
|
|
}
|
|
|
|
/**
|
|
* A class with various functions that are related to paths, files and the filesystem
|
|
* @package phpBB3
|
|
*/
|
|
class filesystem
|
|
{
|
|
/**
|
|
* Eliminates useless . and .. components from specified path.
|
|
*
|
|
* @param string $path Path to clean
|
|
* @return string Cleaned path
|
|
*/
|
|
public function clean_path($path)
|
|
{
|
|
$exploded = explode('/', $path);
|
|
$filtered = array();
|
|
foreach ($exploded as $part)
|
|
{
|
|
if ($part === '.' && !empty($filtered))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if ($part === '..' && !empty($filtered) && $filtered[sizeof($filtered) - 1] !== '..')
|
|
{
|
|
array_pop($filtered);
|
|
}
|
|
else
|
|
{
|
|
$filtered[] = $part;
|
|
}
|
|
}
|
|
$path = implode('/', $filtered);
|
|
return $path;
|
|
}
|
|
}
|