<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category  Zend

 * @package   Zend_Validate

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license   http://framework.zend.com/license/new-bsd     New BSD License

 * @version   $Id: NotExists.php 20352 2010-01-17 17:55:38Z thomas $

 */

/**

 * @see Zend_Validate_File_Exists

 */

require_once 'Zend/Validate/File/Exists.php';

/**

 * Validator which checks if the destination file does not exist

 *

 * @category  Zend

 * @package   Zend_Validate

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license   http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Validate_File_NotExists extends Zend_Validate_File_Exists

{

    /**

     * @const string Error constants

     */

    const DOES_EXIST = 'fileNotExistsDoesExist';

    /**

     * @var array Error message templates

     */

    protected $_messageTemplates = array(

        self::DOES_EXIST => "File '%value%' exists",

    );

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if the file does not exist in the set destinations

     *

     * @param  string  $value Real file to check for

     * @param  array   $file  File data from Zend_File_Transfer

     * @return boolean

     */

    public function isValid($value, $file = null)

    {

        $directories = $this->getDirectory(true);

        if (($file !== null) and (!empty($file['destination']))) {

            $directories[] = $file['destination'];

        } else if (!isset($file['name'])) {

            $file['name'] = $value;

        }

        foreach ($directories as $directory) {

            if (empty($directory)) {

                continue;

            }

            $check = true;

            if (file_exists($directory . DIRECTORY_SEPARATOR . $file['name'])) {

                return $this->_throw($file, self::DOES_EXIST);

            }

        }

        if (!isset($check)) {

            return $this->_throw($file, self::DOES_EXIST);

        }

        return true;

    }

}