<?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) 2005-2015 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';

/**
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_Hex extends Zend_Validate_Abstract
{
const INVALID = 'hexInvalid';
const NOT_HEX = 'notHex';

/**
* Validation failure message template definitions
*
* @var array
*/
protected $_messageTemplates = array(
self::INVALID => "Invalid type given. String expected",
self::NOT_HEX => "'%value%' has not only hexadecimal digit characters",
);

/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if $value contains only hexadecimal digit characters
*
* @param string $value
* @return boolean
*/
public function isValid($value)
{
if (!is_string($value) && !is_int($value)) {
$this->_error(self::INVALID);
return false;
}

$this->_setValue($value);
if (!ctype_xdigit((string) $value)) {
$this->_error(self::NOT_HEX);
return false;
}

return true;
}

}