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<?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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: $
*/
/**
* @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) 2005-2008 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 => "The file '%value%' is no image, '%type%' detected",
self::NOT_DETECTED => "The mimetype of file '%value%' has not been detected",
self::NOT_READABLE => "The file '%value%' can not be read"
);
/**
* Sets validator options
*
* @param string|array $mimetype
* @return void
*/
public function __construct($mimetype = array())
{
if (empty($mimetype)) {
$mimetype = array(
'image/x-quicktime',
'image/jp2',
'image/x-xpmi',
'image/x-portable-bitmap',
'image/x-portable-greymap',
'image/x-portable-pixmap',
'image/x-niff',
'image/tiff',
'image/png',
'image/x-unknown',
'image/gif',
'image/x-ms-bmp',
'application/dicom',
'image/vnd.adobe.photoshop',
'image/vnd.djvu',
'image/x-cpi',
'image/jpeg',
'image/x-ico',
'image/x-coreldraw',
'image/svg+xml'
);
}
$this->setMimeType($mimetype);
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if the file is compression with the set compression types
*
* @param string $value Real file to check for compression
* @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_READABLE);
}
if ($file !== null) {
if (class_exists('finfo', false) && defined('MAGIC')) {
$mime = new finfo(FILEINFO_MIME);
$this->_type = $mime->file($value);
unset($mime);
} elseif (function_exists('mime_content_type') && ini_get('mime_magic.magicfile')) {
$this->_type = mime_content_type($value);
} else {
$this->_type = $file['type'];
}
}
if (empty($this->_type)) {
return $this->_throw($file, self::NOT_DETECTED);
}
$compressions = $this->getMimeType(true);
if (in_array($this->_type, $compressions)) {
return true;
}
$types = explode('/', $this->_type);
$types = array_merge($types, explode('-', $this->_type));
foreach($compressions as $mime) {
if (in_array($mime, $types)) {
return true;
}
}
return $this->_throw($file, self::FALSE_TYPE);
}
}
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