134 Zeilen
3,6 KiB
PHP
134 Zeilen
3,6 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_Filter_Interface
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*/
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require_once 'Zend/Filter/Interface.php';
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/**
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Filter_RealPath implements Zend_Filter_Interface
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{
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/**
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* @var boolean $_pathExists
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*/
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protected $_exists = true;
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/**
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* Class constructor
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*
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* @param boolean|Zend_Config $options Options to set
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*/
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public function __construct($options = true)
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{
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$this->setExists($options);
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}
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/**
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* Returns true if the filtered path must exist
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*
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* @return boolean
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*/
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public function getExists()
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{
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return $this->_exists;
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}
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/**
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* Sets if the path has to exist
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* TRUE when the path must exist
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* FALSE when not existing paths can be given
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*
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* @param boolean|Zend_Config $exists Path must exist
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* @return Zend_Filter_RealPath
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*/
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public function setExists($exists)
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{
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if ($exists instanceof Zend_Config) {
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$exists = $exists->toArray();
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}
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if (is_array($exists)) {
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if (isset($exists['exists'])) {
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$exists = (boolean) $exists['exists'];
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}
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}
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$this->_exists = (boolean) $exists;
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return $this;
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}
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/**
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* Defined by Zend_Filter_Interface
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*
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* Returns realpath($value)
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*
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* @param string $value
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* @return string
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*/
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public function filter($value)
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{
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$path = (string) $value;
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if ($this->_exists) {
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return realpath($path);
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}
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$realpath = @realpath($path);
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if ($realpath) {
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return $realpath;
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}
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$drive = '';
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if (substr(PHP_OS, 0, 3) == 'WIN') {
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$path = preg_replace('/[\\\\\/]/', DIRECTORY_SEPARATOR, $path);
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if (preg_match('/([a-zA-Z]\:)(.*)/', $path, $matches)) {
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list($fullMatch, $drive, $path) = $matches;
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} else {
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$cwd = getcwd();
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$drive = substr($cwd, 0, 2);
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if (substr($path, 0, 1) != DIRECTORY_SEPARATOR) {
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$path = substr($cwd, 3) . DIRECTORY_SEPARATOR . $path;
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}
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}
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} elseif (substr($path, 0, 1) != DIRECTORY_SEPARATOR) {
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$path = getcwd() . DIRECTORY_SEPARATOR . $path;
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}
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$stack = array();
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$parts = explode(DIRECTORY_SEPARATOR, $path);
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foreach ($parts as $dir) {
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if (strlen($dir) && $dir !== '.') {
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if ($dir == '..') {
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array_pop($stack);
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} else {
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array_push($stack, $dir);
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}
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}
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}
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return $drive . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, $stack);
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}
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}
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