BdoDir.php

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<?php

// this MUST be placed in post, as it assumes that any value in dir is valid

class HTMLPurifier_AttrTransform_BdoDir extends HTMLPurifier_AttrTransform
{

    public function transform($attr, $config, $context) {
        if (isset($attr['dir'])) return $attr;
        $attr['dir'] = $config->get('Attr.DefaultTextDir');
        return $attr;
    }

}

// vim: et sw=4 sts=4