pry--pry/lib/pry/config/default.rb

class Pry::Config::Default
  include Pry::Config::Behavior

  default = {
    :input                    => proc { lazy_readline },
    :output                   => proc { $stdout },
    :commands                 => proc { Pry::Commands },
    :prompt_name              => proc { Pry::DEFAULT_PROMPT_NAME },
    :prompt                   => proc { Pry::DEFAULT_PROMPT },
    :prompt_safe_objects      => proc { Pry::DEFAULT_PROMPT_SAFE_OBJECTS },
    :print                    => proc { Pry::DEFAULT_PRINT },
    :quiet                    => proc { false },
    :exception_handler        => proc { Pry::DEFAULT_EXCEPTION_HANDLER },
    :exception_whitelist      => proc { Pry::DEFAULT_EXCEPTION_WHITELIST },
    :hooks                    => proc { Pry::DEFAULT_HOOKS },
    :pager                    => proc { true },
    :system                   => proc { Pry::DEFAULT_SYSTEM },
    :color                    => proc { Pry::Helpers::BaseHelpers.use_ansi_codes? },
    :default_window_size      => proc { 5 },
    :editor                   => proc { Pry.default_editor_for_platform }, # TODO: Pry::Platform.editor
    :should_load_rc           => proc { true },
    :should_load_local_rc     => proc { true },
    :should_trap_interrupts   => proc { Pry::Helpers::BaseHelpers.jruby? }, # TODO: Pry::Platform.jruby?
    :disable_auto_reload      => proc { false },
    :command_prefix           => proc { "" },
    :auto_indent              => proc { Pry::Helpers::BaseHelpers.use_ansi_codes? },
    :correct_indent           => proc { true },
    :collision_warning        => proc { false },
    :output_prefix            => proc { "=> "},
    :requires                 => proc { [] },
    :should_load_requires     => proc { true },
    :should_load_plugins      => proc { true },
    :windows_console_warning  => proc { true },
    :control_d_handler        => proc { Pry::DEFAULT_CONTROL_D_HANDLER },
    :memory_size              => proc { 100 },
    :extra_sticky_locals      => proc { {} },
    :command_completions      => proc { proc { commands.keys } },
    :file_completions         => proc { proc { Dir["."] } },
    :ls                       => proc { Pry::Config.from_hash(Pry::Command::Ls::DEFAULT_OPTIONS) },
    :completer                => proc {
      require "pry/input_completer"
      Pry::InputCompleter
    }
  }

  def initialize
    super(nil)
    configure_gist
    configure_history
  end

  def quiet?
    quiet
  end

  default.each do |key, value|
    define_method(key) do
      if default[key].equal?(value)
        default[key] = instance_eval(&value)
      end
      default[key]
    end
  end

private
  # TODO:
  # all of this configure_* stuff is a relic of old code.
  # we should try move this code to being command-local.
  def configure_gist
    self["gist"] = Pry::Config.from_hash(inspecter: proc(&:pretty_inspect))
  end

  def configure_history
    self["history"] = Pry::Config.from_hash "should_save" => true,
      "should_load" => true
    history.file = File.expand_path("~/.pry_history") rescue nil
    if history.file.nil?
      self.should_load_rc = false
      history.should_save = false
      history.should_load = false
    end
  end

  def lazy_readline
    require 'readline'
    Readline
  rescue LoadError
    warn "Sorry, you can't use Pry without Readline or a compatible library."
    warn "Possible solutions:"
    warn " * Rebuild Ruby with Readline support using `--with-readline`"
    warn " * Use the rb-readline gem, which is a pure-Ruby port of Readline"
    warn " * Use the pry-coolline gem, a pure-ruby alternative to Readline"
    raise
  end
end