class RuboCop::ConfigStore

def for(file_or_dir)
  return @options_config if @options_config
  dir = if File.directory?(file_or_dir)
          file_or_dir
        else
          File.dirname(file_or_dir)
        end
  @path_cache[dir] ||= ConfigLoader.configuration_file_for(dir)
  path = @path_cache[dir]
  @object_cache[path] ||= begin
                            print "For #{dir}: " if ConfigLoader.debug?
                            ConfigLoader.configuration_from_file(path)
                          end
end

def force_default_config!
  @options_config = ConfigLoader.default_configuration
end

def initialize
  # @options_config stores a config that is specified in the command line.
  # This takes precedence over configs located in any directories
  @options_config = nil
  # @path_cache maps directories to configuration paths. We search
  # for .rubocop.yml only if we haven't already found it for the
  # given directory.
  @path_cache = {}
  # @object_cache maps configuration file paths to
  # configuration objects so we only need to load them once.
  @object_cache = {}
end

def options_config=(options_config)
  loaded_config = ConfigLoader.load_file(options_config)
  @options_config = ConfigLoader.merge_with_default(loaded_config,
                                                    options_config)
end