<?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: IsImage.php 22668 2010-07-25 14:50:46Z thomas $

 */

/**

 * @see Zend_Validate_File_MimeType

 */

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

/**

 * Validator which checks if the file already exists in the directory

 *

 * @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_IsImage extends Zend_Validate_File_MimeType

{

    /**

     * @const string Error constants

     */

    const FALSE_TYPE   = 'fileIsImageFalseType';

    const NOT_DETECTED = 'fileIsImageNotDetected';

    const NOT_READABLE = 'fileIsImageNotReadable';

    /**

     * @var array Error message templates

     */

    protected $_messageTemplates = array(

        self::FALSE_TYPE   => "File '%value%' is no image, '%type%' detected",

        self::NOT_DETECTED => "The mimetype of file '%value%' could not be detected",

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

    );

    /**

     * Sets validator options

     *

     * @param  string|array|Zend_Config $mimetype

     * @return void

     */

    public function __construct($mimetype = array())

    {

        if ($mimetype instanceof Zend_Config) {

            $mimetype = $mimetype->toArray();

        }

        $temp    = array();

        // http://de.wikipedia.org/wiki/Liste_von_Dateiendungen

        // http://www.iana.org/assignments/media-types/image/

        $default = array(

            'application/cdf',

            'application/dicom',

            'application/fractals',

            'application/postscript',

            'application/vnd.hp-hpgl',

            'application/vnd.oasis.opendocument.graphics',

            'application/x-cdf',

            'application/x-cmu-raster',

            'application/x-ima',

            'application/x-inventor',

            'application/x-koan',

            'application/x-portable-anymap',

            'application/x-world-x-3dmf',

            'image/bmp',

            'image/c',

            'image/cgm',

            'image/fif',

            'image/gif',

            'image/jpeg',

            'image/jpm',

            'image/jpx',

            'image/jp2',

            'image/naplps',

            'image/pjpeg',

            'image/png',

            'image/svg',

            'image/svg+xml',

            'image/tiff',

            'image/vnd.adobe.photoshop',

            'image/vnd.djvu',

            'image/vnd.fpx',

            'image/vnd.net-fpx',

            'image/x-cmu-raster',

            'image/x-cmx',

            'image/x-coreldraw',

            'image/x-cpi',

            'image/x-emf',

            'image/x-ico',

            'image/x-icon',

            'image/x-jg',

            'image/x-ms-bmp',

            'image/x-niff',

            'image/x-pict',

            'image/x-pcx',

            'image/x-portable-anymap',

            'image/x-portable-bitmap',

            'image/x-portable-greymap',

            'image/x-portable-pixmap',

            'image/x-quicktime',

            'image/x-rgb',

            'image/x-tiff',

            'image/x-unknown',

            'image/x-windows-bmp',

            'image/x-xpmi',

        );

        if (is_array($mimetype)) {

            $temp = $mimetype;

            if (array_key_exists('magicfile', $temp)) {

                unset($temp['magicfile']);

            }

            if (array_key_exists('headerCheck', $temp)) {

                unset($temp['headerCheck']);

            }

            if (empty($temp)) {

                $mimetype += $default;

            }

        }

        if (empty($mimetype)) {

            $mimetype = $default;

        }

        parent::__construct($mimetype);

    }

    /**

     * Throws an error of the given type

     * Duplicates parent method due to OOP Problem with late static binding in PHP 5.2

     *

     * @param  string $file

     * @param  string $errorType

     * @return false

     */

    protected function _throw($file, $errorType)

    {

        $this->_value = $file['name'];

        switch($errorType) {

            case Zend_Validate_File_MimeType::FALSE_TYPE :

                $errorType = self::FALSE_TYPE;

                break;

            case Zend_Validate_File_MimeType::NOT_DETECTED :

                $errorType = self::NOT_DETECTED;

                break;

            case Zend_Validate_File_MimeType::NOT_READABLE :

                $errorType = self::NOT_READABLE;

                break;

        }

        $this->_error($errorType);

        return false;

    }

}