/**
* Save stylesheet resources such as images, font files etc locally
* Also add resources to the CHM hhp file
* @param string $stylesheet Stylesheet data
* @return string
*/
protected function processStylesheetResources($stylesheet)
{
// Find content
$content = preg_match_all('`url\\((([\'"]|)((?:(?!file:).)*?)\\2)\\)`', $stylesheet, $stylesheet_urls);
// Call parent
$stylesheet = parent::processStylesheetResources($stylesheet);
// Add to hhp file
if ($content !== 0) {
foreach (array_unique($stylesheet_urls[3]) as $stylesheet_url) {
if (FALSE !== ($parsed_url = parse_url($stylesheet_url))) {
$content_filename = $this->outputdir . $parsed_url['path'];
$relative_url = trim(substr(realpath($content_filename), strlen(realpath($this->outputdir))), DIRECTORY_SEPARATOR);
fwrite($this->hhpStream, 'res' . DIRECTORY_SEPARATOR . $relative_url . PHP_EOL);
v('Resource saved to hhp: %s.', $parsed_url['path'], VERBOSE_MESSAGES);
}
}
}
// Fix CSS in IE8
$stylesheet = preg_replace('/([0-9\\.])rem/', '\\1em', $stylesheet);
// Remove responsive CSS, reserve 768px to 979px
$stylesheet = preg_replace_callback('/@media([^\\{]+)\\{(([^\\{\\}]*\\{[^\\}\\{]*\\})+[^\\}]+)\\}/', function ($matches) {
if (strpos($matches[1], 'print') !== false || preg_match('/min-width: *([0-9]+)px/', $matches[1], $minWidth) && (int) $minWidth[1] >= 980 || preg_match('/max-width: *([0-9]+)px/', $matches[1], $maxWidth) && (int) $maxWidth[1] < 768) {
return '';
}
return $matches[2];
}, $stylesheet);
return $stylesheet;
}