class SassC::ImportHandler::Importer

def resolve_file_url(url, parent_url, from_import)
  path = URL.unescape(URL.parse(url).route_from(parent_url).to_s)
  parent_path = URL.file_url_to_path(parent_url)
  [File.dirname(parent_path)].concat(load_paths).each do |load_path|
    resolved = FileImporter.resolve_path(File.absolute_path(path, load_path), from_import)
    return URL.path_to_file_url(resolved) unless resolved.nil?
  end
  nil
end