function scan_styles($root, &$pipeline)
{
switch ($root->node_type()) {
case XML_ELEMENT_NODE:
if ($root->tagname() === 'style') {
// Parse <style ...> ... </style> nodes
//
parse_style_node($root, $pipeline);
} elseif ($root->tagname() === 'link') {
// Parse <link rel="stylesheet" ...> nodes
//
$rel = strtolower($root->get_attribute("rel"));
$type = strtolower($root->get_attribute("type"));
if ($root->has_attribute("media")) {
$media = explode(",", $root->get_attribute("media"));
} else {
$media = array();
}
if ($rel == "stylesheet" && ($type == "text/css" || $type == "") && (count($media) == 0 || is_allowed_media($media))) {
$src = $root->get_attribute("href");
if ($src) {
css_import($src, $pipeline);
}
}
}
// Note that we continue processing here!
// Note that we continue processing here!
case XML_DOCUMENT_NODE:
// Scan all child nodes
$child = $root->first_child();
while ($child) {
scan_styles($child, $pipeline);
$child = $child->next_sibling();
}
break;
}
}
function parse_css_property($property, &$pipeline)
{
/**
* Check for !important declaration; if it is present, remove the "!important"
* substring from declaration text.
*
* @todo: store flag indicating that this property is important in returned data
*/
if (preg_match("/^(.*)!important/", $property, $matches)) {
$property = $matches[1];
}
if (preg_match("/^(.*?)\\s*:\\s*(.*)/", $property, $matches)) {
return array(strtolower(trim($matches[1])) => trim($matches[2]));
} elseif (preg_match("/@import\\s+\"(.*)\";/", $property, $matches)) {
// @import "<url>"
css_import(trim($matches[1]), $pipeline);
} elseif (preg_match("/@import\\s+url\\((.*)\\);/", $property, $matches)) {
// @import url()
css_import(trim($matches[1]), $pipeline);
} elseif (preg_match("/@import\\s+(.*);/", $property, $matches)) {
// @import <url>
css_import(trim($matches[1]), $pipeline);
} else {
return array();
}
}
