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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) 2005-2014 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 file extension of a file
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_File_Extension extends Zend_Validate_Abstract
{
/**
* @const string Error constants
*/
const FALSE_EXTENSION = 'fileExtensionFalse';
const NOT_FOUND = 'fileExtensionNotFound';
/**
* @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",
);
/**
* Internal list of extensions
* @var string
*/
protected $_extension = '';
/**
* Validate case sensitive
*
* @var boolean
*/
protected $_case = false;
/**
* @var array Error message template variables
*/
protected $_messageVariables = array(
'extension' => '_extension'
);
/**
* Sets validator options
*
* @param string|array|Zend_Config $options
* @return void
*/
public function __construct($options)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
}
if (1 < func_num_args()) {
$case = func_get_arg(1);
$this->setCase($case);
}
if (is_array($options) and isset($options['case'])) {
$this->setCase($options['case']);
unset($options['case']);
}
$this->setExtension($options);
}
/**
* Returns the case option
*
* @return boolean
*/
public function getCase()
{
return $this->_case;
}
/**
* Sets the case to use
*
* @param boolean $case
* @return Zend_Validate_File_Extension Provides a fluent interface
*/
public function setCase($case)
{
$this->_case = (boolean) $case;
return $this;
}
/**
* Returns the set file extension
*
* @return array
*/
public function getExtension()
{
$extension = explode(',', $this->_extension);
return $extension;
}
/**
* Sets the file extensions
*
* @param string|array $extension The extensions to validate
* @return Zend_Validate_File_Extension Provides a fluent interface
*/
public function setExtension($extension)
{
$this->_extension = null;
$this->addExtension($extension);
return $this;
}
/**
* Adds the file extensions
*
* @param string|array $extension The extensions to add for validation
* @return Zend_Validate_File_Extension Provides a fluent interface
*/
public function addExtension($extension)
{
$extensions = $this->getExtension();
if (is_string($extension)) {
$extension = explode(',', $extension);
}
foreach ($extension as $content) {
if (empty($content) || !is_string($content)) {
continue;
}
$extensions[] = trim($content);
}
$extensions = array_unique($extensions);
// Sanity check to ensure no empty values
foreach ($extensions as $key => $ext) {
if (empty($ext)) {
unset($extensions[$key]);
}
}
$this->_extension = implode(',', $extensions);
return $this;
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if the fileextension of $value is 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);
if (!array_key_exists('extension', $info)) {
// From the manual at http://php.net/pathinfo:
// "If the path does not have an extension, no extension element
// will be returned (see second example below)."
return false;
}
}
$extensions = $this->getExtension();
if ($this->_case && (in_array($info['extension'], $extensions))) {
return true;
} else if (!$this->getCase()) {
foreach ($extensions as $extension) {
if (strtolower($extension) == strtolower($info['extension'])) {
return true;
}
}
}
return $this->_throw($file, self::FALSE_EXTENSION);
}
/**
* Throws an error of the given type
*
* @param string $file
* @param string $errorType
* @return false
*/
protected function _throw($file, $errorType)
{
if (null !== $file) {
$this->_value = $file['name'];
}
$this->_error($errorType);
return false;
}
}
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