class Middleman::Sitemap::Store

def file_to_path(file)
  file = File.join(@app.root, file)
  prefix = @app.source_dir.sub(/\/$/, "") + "/"
  return false unless file.start_with?(prefix)
  path = file.sub(prefix, "")
  # Replace a file name containing automatic_directory_matcher with a folder
  unless @app.config[:automatic_directory_matcher].nil?
    path = path.gsub(@app.config[:automatic_directory_matcher], "/")
  end
  extensionless_path(path)
end