class Middleman::Extensions::AssetHash

def rewrite_url(asset_path, dirpath, _request_path)
  uri = ::Middleman::Util.parse_uri(asset_path)
  relative_path = !uri.path.start_with?('/')
  full_asset_path = if relative_path
    dirpath.join(asset_path).to_s
  else
    asset_path
  end
  return unless asset_page = app.sitemap.find_resource_by_destination_path(full_asset_path) || app.sitemap.find_resource_by_path(full_asset_path)
  replacement_path = "/#{asset_page.destination_path}"
  replacement_path = Pathname.new(replacement_path).relative_path_from(dirpath).to_s if relative_path
  replacement_path
end