class Pry::Command::Cat::FileFormatter

def code_type
  opts[:type] || detect_code_type_from_file(file_name)
end

def code_window_size
  pry_instance.config.default_window_size || 7
end

def decorate(content)
  if line_number
    super(content.around(line_number, code_window_size))
  else
    super
  end
end

def detect_code_type_from_file(file_name)
  code_type = @code_from_file.code_type
  if code_type == :unknown
    name = File.basename(file_name).split('.', 2).first
    case name
    when "Rakefile", "Gemfile"
      :ruby
    else
      :text
    end
  else
    code_type
  end
end

def file_and_line
  file_name, line_num = file_with_embedded_line.split(%r{:(?!/|\\)})
  [file_name, line_num ? line_num.to_i : nil]
end

def file_name
  file_and_line.first
end

def format
  set_file_and_dir_locals(file_name, pry_instance, pry_instance.current_context)
  decorate(@code_from_file)
end

def initialize(file_with_embedded_line, pry_instance, opts)
  unless file_with_embedded_line
    raise CommandError, "Must provide a filename, --in, or --ex."
  end
  @file_with_embedded_line = file_with_embedded_line
  @opts = opts
  @pry_instance = pry_instance
  @code_from_file = Pry::Code.from_file(file_name)
end

def line_number
  file_and_line.last
end