<?php
/**
 * patForms Rule ConfigExists
 *
 * $Id$
 *
 * @package	Wombat
 * @subpackage Rules
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

WBClass::load('WBPAT_Forms_Rule');

/**
 * patForms Rule ConfigExists
 *
 * Check whether config exists. Use loader to load config and check whether loading fails
 *
 * @version 0.1.0
 * @package	Wombat
 * @subpackage patForms
 */
class patForms_Rule_PregMatch extends WBPAT_Forms_Rule
{
    /**
     * default config values
     *  - regex
     *  - match must match or must not match
     *
     * @var array
     */
    protected $config   =   array(
                            'regex'     =>  '/^\w+$/',
                            'match'     =>  'yes'
                            );

   /**
     * Initialize validation codes using gettext
     *
     * @access protected
     * @return bool $success Always returns true.
     * @see $attributeDefaults
     */
    public function loadValidatiorErrorCodes()
    {
        $this->validatorErrorCodes  = array(
            1   =>   patI18n::dgettext('wombat', 'Format mismatch'),
        );
        return true;
    }

    /**
     * method called by patForms or any patForms_Element to validate the
     * element or the form.
     *
     * @param patForms_Element $form object
     * @return bool true on sucess
     */
	public function applyRule(&$element, $type = PATFORMS_RULE_AFTER_VALIDATION)
	{
	    $value  =   $element->getValue();
	    if (empty($value)) {
            return true;
	    }
	    $match  =   preg_match($this->config['regex'], $value);

        // inverse
        if ('no' == $this->config['match']) {
            $match  =   !$match;
        }

        if ($match) {
            return true;
        }

        $this->addValidationError(1);
        return false;
	}
}
?>