function parse_style_node($root, &$pipeline)
{
// Check if this style node have 'media' attribute
// and if we're using this media;
//
// Note that, according to the HTML 4.01 p.14.2.3
// This attribute specifies the intended destination medium for style information.
// It may be a single media descriptor or a comma-separated list.
// The default value for this attribute is "screen".
//
$media_list = array("screen");
if ($root->has_attribute("media")) {
// Note that there may be whitespace symbols around commas, so we should not just use 'explode' function
$media_list = preg_split("/\\s*,\\s*/", trim($root->get_attribute("media")));
}
if (!is_allowed_media($media_list)) {
if (defined('DEBUG_MODE')) {
error_log(sprintf('No allowed (%s) media types found in CSS stylesheet media types (%s). Stylesheet ignored.', join(',', config_get_allowed_media()), join(',', $media_list)));
}
return;
}
if (!isset($GLOBALS['g_stylesheet_title']) || $GLOBALS['g_stylesheet_title'] === "") {
$GLOBALS['g_stylesheet_title'] = $root->get_attribute("title");
}
if (!$root->has_attribute("title") || $root->get_attribute("title") === $GLOBALS['g_stylesheet_title']) {
/**
* Check if current node is empty (then, we don't need to parse its contents)
*/
$content = trim($root->get_content());
if ($content != "") {
$this->parse_css($content, $pipeline);
}
}
}
function parse_style_node($root, &$pipeline)
{
global $g_stylesheet_title;
// Check if this style node have 'media' attribute
// and if we're using this media;
//
// Note that, according to the HTML 4.01 p.14.2.3
// This attribute specifies the intended destination medium for style information.
// It may be a single media descriptor or a comma-separated list.
// The default value for this attribute is "screen".
//
$media_list = array("screen");
if ($root->has_attribute("media")) {
// Note that there may be whitespace symbols around commas, so we should not just use 'explode' function
//
$media_list = preg_split("/\\s*,\\s*/", trim($root->get_attribute("media")));
}
if (!is_allowed_media($media_list)) {
return;
}
if ($g_stylesheet_title === "") {
$g_stylesheet_title = $root->get_attribute("title");
}
if (!$root->has_attribute("title") || $root->get_attribute("title") === $g_stylesheet_title) {
/**
* Check if current node is empty (then, we don't need to parse its contents)
*/
$content = trim($root->get_content());
if ($content != "") {
parse_css($content, $pipeline);
}
}
}
function scan_styles($root, &$pipeline)
{
switch ($root->node_type()) {
case XML_ELEMENT_NODE:
$tagname = strtolower($root->tagname());
if ($tagname === 'style') {
// Parse <style ...> ... </style> nodes
//
$this->parse_style_node($root, $pipeline);
} elseif ($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))) {
// Attempt to escape URL automaticaly
$url_autofix = new AutofixUrl();
$src = $url_autofix->apply(trim($root->get_attribute('href')));
if ($src) {
$this->css_import($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) {
$this->scan_styles($child, $pipeline);
$child = $child->next_sibling();
}
break;
}
}
function scan_styles($root, &$pipeline)
{
switch ($root->node_type()) {
case XML_ELEMENT_NODE:
# kornev, already in lower
# $tagname = strtolower($root->tagname());
$tagname = $root->tagname();
if ($tagname === 'style') {
$this->parse_style_node($root, $pipeline);
} elseif ($tagname === 'link') {
$rel = $root->get_attribute('rel');
$type = $root->get_attribute('type');
if ($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))) {
// Attempt to escape URL automaticaly
$url_autofix = new AutofixUrl();
$src = $url_autofix->apply(trim($root->get_attribute('href')));
if ($src) {
$this->css_import($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) {
$this->scan_styles($child, $pipeline);
$child = $child->next_sibling();
}
break;
}
}
