<?php

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */



/**

 * Validates values using regular expressions

 * 

 * PHP versions 4 and 5

 *

 * LICENSE: This source file is subject to version 3.01 of the PHP license

 * that is available through the world-wide-web at the following URI:

 * http://www.php.net/license/3_01.txt If you did not receive a copy of

 * the PHP License and are unable to obtain it through the web, please

 * send a note to license@php.net so we can mail you a copy immediately.

 *

 * @category    HTML

 * @package     HTML_QuickForm

 * @author      Bertrand Mansion <bmansion@mamasam.com>

 * @copyright   2001-2011 The PHP Group

 * @license     http://www.php.net/license/3_01.txt PHP License 3.01

 * @version     CVS: $Id: Regex.php 317587 2011-10-01 07:55:53Z avb $

 * @link        http://pear.php.net/package/HTML_QuickForm

 */



/**

 * Abstract base class for QuickForm validation rules 

 */

require_once 'HTML/QuickForm/Rule.php';



/**

 * Validates values using regular expressions

 *

 * @category    HTML

 * @package     HTML_QuickForm

 * @author      Bertrand Mansion <bmansion@mamasam.com>

 * @version     Release: 3.2.13

 * @since       3.2

 */

class HTML_QuickForm_Rule_Regex extends HTML_QuickForm_Rule

{

    /**

     * Array of regular expressions

     *

     * Array is in the format:

     * $_data['rulename'] = 'pattern';

     *

     * @var     array

     * @access  private

     */

    var $_data = array(

                    'lettersonly'   => '/^[a-zA-Z]+$/',

                    'alphanumeric'  => '/^[a-zA-Z0-9]+$/',

                    'numeric'       => '/(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/',

                    'nopunctuation' => '/^[^().\/\*\^\?#!@$%+=,\"\'><~\[\]{}]+$/',

                    'nonzero'       => '/^-?[1-9][0-9]*/'

                    );



    /**

     * Validates a value using a regular expression

     *

     * @param     string    $value      Value to be checked

     * @param     string    $regex      Regular expression

     * @access    public

     * @return    boolean   true if value is valid

     */

    function validate($value, $regex = null)

    {

        // Fix for bug #10799: add 'D' modifier to regex

        if (isset($this->_data[$this->name])) {

            if (!preg_match($this->_data[$this->name] . 'D', $value)) {

                return false;

            }

        } else {

            if (!preg_match($regex . 'D', $value)) {

                return false;

            }

        }

        return true;

    } // end func validate



    /**

     * Adds new regular expressions to the list

     *

     * @param     string    $name       Name of rule

     * @param     string    $pattern    Regular expression pattern

     * @access    public

     */

    function addData($name, $pattern)

    {

        $this->_data[$name] = $pattern;

    } // end func addData





    function getValidationScript($options = null)

    {

        $regex = isset($this->_data[$this->name]) ? $this->_data[$this->name] : $options;



        // bug #12376, converting unicode escapes and stripping 'u' modifier

        if ($pos = strpos($regex, 'u', strrpos($regex, '/'))) {

            $regex = substr($regex, 0, $pos) . substr($regex, $pos + 1);

            $regex = preg_replace('/(?<!\\\\)(?>\\\\\\\\)*\\\\x{([a-fA-F0-9]+)}/', '\\u$1', $regex);

        }



        return array("  var regex = " . $regex . ";\n", "{jsVar} != '' && !regex.test({jsVar})");

    } // end func getValidationScript



} // end class HTML_QuickForm_Rule_Regex

?>