<?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) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Hex.php 24593 2012-01-05 20:35:02Z matthew $

 */

/**

 * @see Zend_Validate_Abstract

 */

require_once 'Zend/Validate/Abstract.php';

/**

 * @category   Zend

 * @package    Zend_Validate

 * @copyright  Copyright (c) 2005-2012 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;

    }

}