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<?php
/**
* Validates the value for the CSS property text-decoration
* @note This class could be generalized into a version that acts sort of
* like Enum except you can compound the allowed values.
*/
class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
static $allowed_values = array(
'line-through' => true,
'overline' => true,
'underline' => true,
);
$string = strtolower($this->parseCDATA($string));
if ($string === 'none') return $string;
$parts = explode(' ', $string);
$final = '';
foreach ($parts as $part) {
if (isset($allowed_values[$part])) {
$final .= $part . ' ';
}
}
$final = rtrim($final);
if ($final === '') return false;
return $final;
}
}
// vim: et sw=4 sts=4
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