<?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

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

 */

/**

 * @see Zend_Validate_Abstract

 */

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

/**

 * Validator for the excluding file extensions

 *

 * @category  Zend

 * @package   Zend_Validate

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

 */

class Zend_Validate_File_ExcludeExtension extends Zend_Validate_File_Extension

{

    /**

     * @const string Error constants

     */

    const FALSE_EXTENSION = 'fileExcludeExtensionFalse';

    const NOT_FOUND       = 'fileExcludeExtensionNotFound';

    /**

     * @var array Error message templates

     */

    protected $_messageTemplates = array(

        self::FALSE_EXTENSION => "File '%value%' has a false extension",

        self::NOT_FOUND       => "File '%value%' is not readable or does not exist",

    );

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if the fileextension of $value is not included in the

     * set extension list

     *

     * @param  string  $value Real file to check for extension

     * @param  array   $file  File data from Zend_File_Transfer

     * @return boolean

     */

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

    {

        // Is file readable ?

        require_once 'Zend/Loader.php';

        if (!Zend_Loader::isReadable($value)) {

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

        }

        if ($file !== null) {

            $info['extension'] = substr($file['name'], strrpos($file['name'], '.') + 1);

        } else {

            $info = pathinfo($value);

        }

        $extensions = $this->getExtension();

        if ($this->_case and (!in_array($info['extension'], $extensions))) {

            return true;

        } else if (!$this->_case) {

            $found = false;

            foreach ($extensions as $extension) {

                if (strtolower($extension) == strtolower($info['extension'])) {

                    $found = true;

                }

            }

            if (!$found) {

                return true;

            }

        }

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

    }

}