[tt-rss.git] / lib / htmlpurifier / library / HTMLPurifier / ChildDef / Optional.php

<?php

/**
 * Definition that allows a set of elements, and allows no children.
 * @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
 *       really, one shouldn't inherit from the other.  Only altered behavior
 *       is to overload a returned false with an array.  Thus, it will never
 *       return false.
 */
class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
{
    public $allow_empty = true;
    public $type = 'optional';
    public function validateChildren($tokens_of_children, $config, $context) {
        $result = parent::validateChildren($tokens_of_children, $config, $context);
        // we assume that $tokens_of_children is not modified
        if ($result === false) {
            if (empty($tokens_of_children)) return true;
            elseif ($this->whitespace) return $tokens_of_children;
            else return array();
        }
        return $result;
    }
}

// vim: et sw=4 sts=4
Commit	Line	Data
f45a286b AD	1	<?php
	2
	3	/**
	4	* Definition that allows a set of elements, and allows no children.
	5	* @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
	6	* really, one shouldn't inherit from the other. Only altered behavior
	7	* is to overload a returned false with an array. Thus, it will never
	8	* return false.
	9	*/
	10	class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
	11	{
	12	public $allow_empty = true;
	13	public $type = 'optional';
	14	public function validateChildren($tokens_of_children, $config, $context) {
	15	$result = parent::validateChildren($tokens_of_children, $config, $context);
	16	// we assume that $tokens_of_children is not modified
	17	if ($result === false) {
	18	if (empty($tokens_of_children)) return true;
	19	elseif ($this->whitespace) return $tokens_of_children;
	20	else return array();
	21	}
	22	return $result;
	23	}
	24	}
	25
	26	// vim: et sw=4 sts=4