# class IRB::RelineInputMethod

### Constants

SHOW_DOC_DIALOG

### Public Class Methods

new() click to toggle source

Creates a new input method object using `Reline`

Calls superclass method `IRB::InputMethod::new`

    # File lib/irb/input-method.rb, line 268
    def initialize
      IRB.__send__(:set_encoding, Reline.encoding_system_needs.name, override: false)
      super

      @line_no = 0
      @line = []
      @eof = false

      @stdin = ::IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
      @stdout = ::IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")

      if Reline.respond_to?("basic_word_break_characters=")
        Reline.basic_word_break_characters = IRB::InputCompletor::BASIC_WORD_BREAK_CHARACTERS
      end
      Reline.completion_append_character = nil
      Reline.completer_quote_characters = ''
      Reline.completion_proc = IRB::InputCompletor::CompletionProc
      Reline.output_modifier_proc =
        if IRB.conf[:USE_COLORIZE]
          proc do |output, complete: |
            next unless IRB::Color.colorable?
            lvars = IRB.CurrentContext&.local_variables || []
            IRB::Color.colorize_code(output, complete: complete, local_variables: lvars)
          end
        else
          proc do |output|
            Reline::Unicode.escape_for_print(output)
          end
        end
      Reline.dig_perfect_match_proc = IRB::InputCompletor::PerfectMatchedProc
      Reline.autocompletion = IRB.conf[:USE_AUTOCOMPLETE]

      if IRB.conf[:USE_AUTOCOMPLETE]
        begin
          require 'rdoc'
          Reline.add_dialog_proc(:show_doc, SHOW_DOC_DIALOG, Reline::DEFAULT_DIALOG_CONTEXT)
        rescue LoadError
        end
      end
    end

### Public Instance Methods

auto_indent(&block) click to toggle source

    # File lib/irb/input-method.rb, line 317
    def auto_indent(&block)
      @auto_indent_proc = block
    end

check_termination(&block) click to toggle source

    # File lib/irb/input-method.rb, line 309
    def check_termination(&block)
      @check_termination_proc = block
    end

dynamic_prompt(&block) click to toggle source

    # File lib/irb/input-method.rb, line 313
    def dynamic_prompt(&block)
      @prompt_proc = block
    end

encoding() click to toggle source

The external encoding for standard input.

    # File lib/irb/input-method.rb, line 457
    def encoding
      @stdin.external_encoding
    end

eof?() click to toggle source

Whether the end of this input method has been reached, returns `true` if there is no more data to read.

See `IO#eof?` for more information.

    # File lib/irb/input-method.rb, line 435
    def eof?
      @eof
    end

gets() click to toggle source

Reads the next line from this input method.

See `IO#gets` for more information.

    # File lib/irb/input-method.rb, line 417
    def gets
      Reline.input = @stdin
      Reline.output = @stdout
      Reline.prompt_proc = @prompt_proc
      Reline.auto_indent_proc = @auto_indent_proc if @auto_indent_proc
      if l = readmultiline(@prompt, false, &@check_termination_proc)
        HISTORY.push(l) if !l.empty?
        @line[@line_no += 1] = l + "\n"
      else
        @eof = true
        l
      end
    end

inspect() click to toggle source

For debug message

    # File lib/irb/input-method.rb, line 462
    def inspect
      config = Reline::Config.new
      str = "RelineInputMethod with Reline #{Reline::VERSION}"
      if config.respond_to?(:inputrc_path)
        inputrc_path = File.expand_path(config.inputrc_path)
      else
        inputrc_path = File.expand_path(ENV['INPUTRC'] || '~/.inputrc')
      end
      str += " and #{inputrc_path}" if File.exist?(inputrc_path)
      str
    end

line(line_no) click to toggle source

Returns the current line number for io.

`line` counts the number of times `gets` is called.

See `IO#lineno` for more information.

    # File lib/irb/input-method.rb, line 452
    def line(line_no)
      @line[line_no]
    end

readable_after_eof?() click to toggle source

Whether this input method is still readable when there is no more data to read.

See `IO#eof` for more information.

    # File lib/irb/input-method.rb, line 443
    def readable_after_eof?
      true
    end