class Middleman::Extensions::AssetHash

def manipulate_single_resource(resource)
  return unless @exts.include?(resource.ext)
  return if ignored_resource?(resource)
  return if resource.ignored?
  digest = if resource.binary?
    ::Digest::SHA1.file(resource.source_file).hexdigest[0..7]
  else
    # Render through the Rack interface so middleware and mounted apps get a shot
    response = @rack_client.get(
      Addressable::URI.encode(resource.destination_path),
      'bypass_inline_url_rewriter_asset_hash' => 'true'
    )
    raise "#{resource.path} should be in the sitemap!" unless response.status == 200
    ::Digest::SHA1.hexdigest(response.body)[0..7]
  end
  path, basename, extension = split_path(resource.destination_path)
  resource.destination_path = options.rename_proc.call(path, basename, digest, extension, options)
  resource
end