/**
* Asset Stylesheet Action
*
* @return null
*/
public static function assetStylesheetAction()
{
$pagename = get_query_var('pagename');
$files = get_query_var('files');
$fingerprint = get_query_var('fingerprint');
// check if on mg_asset_css page and have 'files' parameter
if ($pagename == 'mg_asset_css' && $files) {
$content = '';
$lastModified = new \DateTime('-1 year');
// initialize cached resource file location
$cachedResourceFile = MgCacheHelper::$cacheDir . '/' . $fingerprint . '.css';
// create new cached resource, save to cache directory
if (!file_exists($cachedResourceFile)) {
// turn files parameter into array
$fileArray = explode(',', $files);
if (is_array($fileArray) && count($fileArray)) {
// loop over array of files
foreach ($fileArray as $file) {
if ($stylesheetPath = realpath(MgCacheHelper::$webRoot . $file)) {
// get timestamp for most recently modified file
$localLastModified = new \DateTime(date("F d Y H:i:s", filemtime($stylesheetPath)));
if ($localLastModified > $lastModified) {
$lastModified = $localLastModified;
}
// get contents of each file while fixing asset paths
$content .= MgAssetHelper::assetContents($file);
}
}
// strip whitespace and comments from $content
if (MgAssetHelper::$minify) {
$content = preg_replace(array('/\\/\\*.*?\\*\\//s', '/\\s+/'), array('', ' '), $content);
}
}
// save contents
if (!empty($content)) {
if (!is_writable(dirname($cachedResourceFile))) {
mkdir(dirname($cachedResourceFile), 0775, true);
}
if (is_writable(dirname($cachedResourceFile))) {
file_put_contents($cachedResourceFile, $content);
}
}
}
// read cached resource to buffer
if (file_exists($cachedResourceFile)) {
ob_start();
readfile($cachedResourceFile);
$content = ob_get_contents();
ob_end_clean();
$lastModified = new \DateTime(date("F d Y H:i:s", filemtime($cachedResourceFile)));
}
// output
if (empty($content)) {
header('HTTP/1.1 404 Not Found');
} else {
header('HTTP/1.1 200 OK');
header('Content-Type: text/css');
header('Content-Length: ' . strlen($content));
header('Expires: ' . date('D, d M Y H:i:s e', strtotime('+1 year')));
header('Cache-Control: max-age=31556926');
header('Last-Modified: ' . $lastModified->format('D, d M Y H:i:s e'));
header('Date: ' . $lastModified->format('D, d M Y H:i:s e'));
header('Pragma: cache');
header('Vary: Accept-Encoding');
header('X-Content-Type-Options: nosniff');
header('Accept-Ranges: bytes');
echo $content;
}
exit;
}
}
