class Rspec::Core::ConfigurationOptions

def apply_to(config)
  merged_options.each do |key, value|
    config.send("#{key}=", value)
  end
end

def args_from_options_file(path)
  return [] unless File.exist?(path)
  File.readlines(path).map {|l| l.split}.flatten
end

def command_line_options
  parse_command_line_options
end

def global_options
  parse_options_file(GLOBAL_OPTIONS_FILE)
end

def initialize(args)
  @args = args
  @options = {}
end

def local_options
  parse_options_file(local_options_file)
end

def local_options_file
  return @options.delete(:options_file) if @options[:options_file]
  return LOCAL_OPTIONS_FILE if File.exist?(LOCAL_OPTIONS_FILE)
  Rspec.deprecate("spec/spec.opts", ".rspec or ~/.rspec", "2.0.0") if File.exist?("spec/spec.opts")
  "spec/spec.opts"
end

def merged_options
  [global_options, local_options, command_line_options].inject do |merged, options|
    merged.merge(options)
  end
end

def parse_command_line_options
  @options = Parser.parse!(@args)
  @options[:files_or_directories_to_run] = @args
  @options
end

def parse_options_file(path)
  Parser.parse(args_from_options_file(path))
end