blocks from input HTML, cleans them up
* using CSSTidy, and then places them in $purifier->context->get('StyleBlocks')
* so they can be used elsewhere in the document.
*
* @note
* See tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php for
* sample usage.
*
* @note
* This filter can also be used on stylesheets not included in the
* document--something purists would probably prefer. Just directly
* call HTMLPurifier_Filter_ExtractStyleBlocks->cleanCSS()
*/
class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
{
/**
* @type string
*/
public $name = 'ExtractStyleBlocks';
/**
* @type array
*/
private $_styleMatches = array();
/**
* @type csstidy
*/
private $_tidy;
/**
* @type HTMLPurifier_AttrDef_HTML_ID
*/
private $_id_attrdef;
/**
* @type HTMLPurifier_AttrDef_CSS_Ident
*/
private $_class_attrdef;
/**
* @type HTMLPurifier_AttrDef_Enum
*/
private $_enum_attrdef;
public function __construct()
{
$this->_tidy = new csstidy();
$this->_tidy->set_cfg('lowercase_s', false);
$this->_id_attrdef = new HTMLPurifier_AttrDef_HTML_ID(true);
$this->_class_attrdef = new HTMLPurifier_AttrDef_CSS_Ident();
$this->_enum_attrdef = new HTMLPurifier_AttrDef_Enum(
array(
'first-child',
'link',
'visited',
'active',
'hover',
'focus'
)
);
}
/**
* Save the contents of CSS blocks to style matches
* @param array $matches preg_replace style $matches array
*/
protected function styleCallback($matches)
{
$this->_styleMatches[] = $matches[1];
}
/**
* Removes inline #isU', array($this, 'styleCallback'), $html);
$style_blocks = $this->_styleMatches;
$this->_styleMatches = array(); // reset
$context->register('StyleBlocks', $style_blocks); // $context must not be reused
if ($this->_tidy) {
foreach ($style_blocks as &$style) {
$style = $this->cleanCSS($style, $config, $context);
}
}
return $html;
}
/**
* Takes CSS (the stuff found in in a font-family prop).
if ($config->get('Filter.ExtractStyleBlocks.Escaping')) {
$css = str_replace(
array('<', '>', '&'),
array('\3C ', '\3E ', '\26 '),
$css
);
}
return $css;
}
}
// vim: et sw=4 sts=4