<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version    $Id: Regex.php 22668 2010-07-25 14:50:46Z thomas $

 */

/**

 * @see Zend_Validate_Abstract

 */

require_once 'Zend/Validate/Abstract.php';

/**

 * @category   Zend

 * @package    Zend_Validate

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 */

class Zend_Validate_Regex extends Zend_Validate_Abstract

{

    const INVALID   = 'regexInvalid';

    const NOT_MATCH = 'regexNotMatch';

    const ERROROUS  = 'regexErrorous';

    /**

     * @var array

     */

    protected $_messageTemplates = array(

        self::INVALID   => "Invalid type given. String, integer or float expected",

        self::NOT_MATCH => "'%value%' does not match against pattern '%pattern%'",

        self::ERROROUS  => "There was an internal error while using the pattern '%pattern%'",

    );

    /**

     * @var array

     */

    protected $_messageVariables = array(

        'pattern' => '_pattern'

    );

    /**

     * Regular expression pattern

     *

     * @var string

     */

    protected $_pattern;

    /**

     * Sets validator options

     *

     * @param  string|Zend_Config $pattern

     * @throws Zend_Validate_Exception On missing 'pattern' parameter

     * @return void

     */

    public function __construct($pattern)

    {

        if ($pattern instanceof Zend_Config) {

            $pattern = $pattern->toArray();

        }

        if (is_array($pattern)) {

            if (array_key_exists('pattern', $pattern)) {

                $pattern = $pattern['pattern'];

            } else {

                require_once 'Zend/Validate/Exception.php';

                throw new Zend_Validate_Exception("Missing option 'pattern'");

            }

        }

        $this->setPattern($pattern);

    }

    /**

     * Returns the pattern option

     *

     * @return string

     */

    public function getPattern()

    {

        return $this->_pattern;

    }

    /**

     * Sets the pattern option

     *

     * @param  string $pattern

     * @throws Zend_Validate_Exception if there is a fatal error in pattern matching

     * @return Zend_Validate_Regex Provides a fluent interface

     */

    public function setPattern($pattern)

    {

        $this->_pattern = (string) $pattern;

        $status         = @preg_match($this->_pattern, "Test");

        if (false === $status) {

            require_once 'Zend/Validate/Exception.php';

            throw new Zend_Validate_Exception("Internal error while using the pattern '$this->_pattern'");

        }

        return $this;

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if $value matches against the pattern option

     *

     * @param  string $value

     * @return boolean

     */

    public function isValid($value)

    {

        if (!is_string($value) && !is_int($value) && !is_float($value)) {

            $this->_error(self::INVALID);

            return false;

        }

        $this->_setValue($value);

        $status = @preg_match($this->_pattern, $value);

        if (false === $status) {

            $this->_error(self::ERROROUS);

            return false;

        }

        if (!$status) {

            $this->_error(self::NOT_MATCH);

            return false;

        }

        return true;

    }

}