<?php

/**
 * Primitive email validation class based on the regexp found at
 * http://www.regular-expressions.info/email.html
 */
class HTMLPurifier_AttrDef_URI_Email_SimpleCheck extends HTMLPurifier_AttrDef_URI_Email {
	
	/**
	 *
	 * @param string $string        	
	 * @param HTMLPurifier_Config $config        	
	 * @param HTMLPurifier_Context $context        	
	 * @return bool|string
	 */
	public function validate($string, $config, $context) {
		// no support for named mailboxes i.e. "Bob <bob@example.com>"
		// that needs more percent encoding to be done
		if ($string == '') {
			return false;
		}
		$string = trim ( $string );
		$result = preg_match ( '/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i', $string );
		return $result ? $string : false;
	}
}

// vim: et sw=4 sts=4