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MimeType.php
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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 [email protected] 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_Abstract
*/
require_once 'Zend/Validate/Abstract.php';
/**
* Validator for the mime type of a file
*
* @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_MimeType extends Zend_Validate_Abstract
{
const FALSE_TYPE = 'fileMimeTypeFalse';
const NOT_DETECTED = 'fileMimeTypeNotDetected';
const NOT_READABLE = 'fileMimeTypeNotReadable';
/**
* @var array
*/
protected $_messageTemplates = array(
self::FALSE_TYPE => "The file '%value%' has a false mimetype",
self::NOT_DETECTED => "The mimetype of file '%value%' has not been detected",
self::NOT_READABLE => "The file '%value%' can not be read"
);
/**
* @var array
*/
protected $_messageVariables = array(
'mimetype' => '_mimetype'
);
/**
* Mimetypes
*
* If null, there is no mimetype
*
* @var string|null
*/
protected $_mimetype;
/**
* Sets validator options
*
* Mimetype to accept
*
* @param string|array $mimetype MimeType
* @return void
*/
public function __construct($mimetype)
{
$this->setMimeType($mimetype);
}
/**
* Returns the set mimetypes
*
* @param boolean $asArray Returns the values as array, when false an concated string is returned
* @return integer
*/
public function getMimeType($asArray = false)
{
$asArray = (bool) $asArray;
$mimetype = (string) $this->_mimetype;
if ($asArray) {
$mimetype = explode(',', $mimetype);
}
return $mimetype;
}
/**
* Sets the mimetypes
*
* @param string|array $mimetype The mimetypes to validate
* @return Zend_Validate_File_Extension Provides a fluent interface
*/
public function setMimeType($mimetype)
{
$this->_mimetype = null;
$this->addMimeType($mimetype);
return $this;
}
/**
* Adds the mimetypes
*
* @param string|array $mimetype The mimetypes to add for validation
* @return Zend_Validate_File_Extension Provides a fluent interface
*/
public function addMimeType($mimetype)
{
$mimetypes = $this->getMimeType(true);
if (is_string($mimetype)) {
$mimetype = explode(',', $mimetype);
}
foreach ($mimetype as $content) {
if (empty($content) || !is_string($content)) {
continue;
}
$mimetypes[] = trim($content);
}
$mimetypes = array_unique($mimetypes);
// Sanity check to ensure no empty values
foreach ($mimetypes as $key => $mt) {
if (empty($mt)) {
unset($mimetypes[$key]);
}
}
$this->_mimetype = implode(',', $mimetypes);
return $this;
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if the mimetype of the file matches the given ones. Also parts
* of mimetypes can be checked. If you give for example "image" all image
* mime types will be accepted like "image/gif", "image/jpeg" and so on.
*
* @param string $value Real file to check for mimetype
* @param array $file File data from Zend_File_Transfer
* @return boolean
*/
public function isValid($value, $file = null)
{
// Is file readable ?
if (!@is_readable($value)) {
$this->_throw($file, self::NOT_READABLE);
return false;
}
if ($file !== null) {
$info['type'] = $file['type'];
} else {
$this->_throw($file, self::NOT_DETECTED);
return false;
}
$mimetype = $this->getMimeType(true);
if (in_array($info['type'], $mimetype)) {
return true;
}
foreach($mimetype as $mime) {
$types = explode('/', $info['type']);
if (in_array($mime, $types)) {
return true;
}
}
$this->_throw($file, self::FALSE_TYPE);
return false;
}
/**
* Throws an error of the given type
*
* @param string $file
* @param string $errorType
* @return false
*/
protected function _throw($file, $errorType)
{
if ($file !== null) {
$this->_value = $file['name'];
}
$this->_error($errorType);
return false;
}
}