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27 lines
958 B
PHP
27 lines
958 B
PHP
<?php
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/**
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* Definition that allows a set of elements, and allows no children.
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* @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
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* really, one shouldn't inherit from the other. Only altered behavior
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* is to overload a returned false with an array. Thus, it will never
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* return false.
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*/
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class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
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{
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public $allow_empty = true;
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public $type = 'optional';
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public function validateChildren($tokens_of_children, $config, $context) {
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$result = parent::validateChildren($tokens_of_children, $config, $context);
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// we assume that $tokens_of_children is not modified
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if ($result === false) {
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if (empty($tokens_of_children)) return true;
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elseif ($this->whitespace) return $tokens_of_children;
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else return array();
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}
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return $result;
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}
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}
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// vim: et sw=4 sts=4
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