diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Validate/File/NotExists.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Validate/File/NotExists.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,84 @@
+<?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;
+    }
+}