public function serve($salt = '')
{
$protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0';
if ($input = $this->findInput()) {
$output = $this->cacheName($salt . $input);
$etag = $noneMatch = trim($this->getIfNoneMatchHeader(), '"');
if ($this->needsCompile($output, $etag)) {
try {
list($css, $etag) = $this->compile($input, $output);
$lastModified = gmdate('D, d M Y H:i:s', filemtime($output)) . ' GMT';
header('Last-Modified: ' . $lastModified);
header('Content-type: text/css');
header('ETag: "' . $etag . '"');
echo $css;
} catch (\Exception $e) {
if ($this->showErrorsAsCSS) {
header('Content-type: text/css');
echo $this->createErrorCSS($e);
} else {
header($protocol . ' 500 Internal Server Error');
header('Content-type: text/plain');
echo 'Parse error: ' . $e->getMessage() . "\n";
}
}
return;
}
header('X-SCSS-Cache: true');
header('Content-type: text/css');
header('ETag: "' . $etag . '"');
if ($etag === $noneMatch) {
header($protocol . ' 304 Not Modified');
return;
}
$modifiedSince = $this->getIfModifiedSinceHeader();
$mtime = filemtime($output);
if (strtotime($modifiedSince) === $mtime) {
header($protocol . ' 304 Not Modified');
return;
}
$lastModified = gmdate('D, d M Y H:i:s', $mtime) . ' GMT';
header('Last-Modified: ' . $lastModified);
echo file_get_contents($output);
return;
}
header($protocol . ' 404 Not Found');
header('Content-type: text/plain');
$v = Version::VERSION;
echo "/* INPUT NOT FOUND scss {$v} */\n";
}