Class: IRB::ReidlineInputMethod

Inherits:
InputMethod show all
Includes:
Reline
Defined in:
lib/irb/input-method.rb

Instance Attribute Summary

Attributes inherited from InputMethod

#file_name, #prompt

Instance Method Summary collapse

Methods inherited from InputMethod

#winsize

Constructor Details

#initialize ⇒ ReidlineInputMethod

Creates a new input method object using Readline



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# File 'lib/irb/input-method.rb', line 244

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.completion_proc = IRB::InputCompletor::CompletionProc
  Reline.output_modifier_proc =
    if IRB.conf[:USE_COLORIZE]
      proc do |output, complete: |
        next unless IRB::Color.colorable?
        IRB::Color.colorize_code(output, complete: complete)
      end
    else
      proc do |output|
        Reline::Unicode.escape_for_print(output)
      end
    end
  Reline.dig_perfect_match_proc = IRB::InputCompletor::PerfectMatchedProc
end

Instance Method Details

#auto_indent(&block) ⇒ Object 



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# File 'lib/irb/input-method.rb', line 282

def auto_indent(&block)
  @auto_indent_proc = block
end

#check_termination(&block) ⇒ Object 



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# File 'lib/irb/input-method.rb', line 274

def check_termination(&block)
  @check_termination_proc = block
end

#dynamic_prompt(&block) ⇒ Object 



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# File 'lib/irb/input-method.rb', line 278

def dynamic_prompt(&block)
  @prompt_proc = block
end

#encoding ⇒ Object

The external encoding for standard input.



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# File 'lib/irb/input-method.rb', line 329

def encoding
  @stdin.external_encoding
end

#eof? ⇒ Boolean

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.

Returns:

  • (Boolean) 


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# File 'lib/irb/input-method.rb', line 307

def eof?
  @eof
end

#gets ⇒ Object

Reads the next line from this input method.

See IO#gets for more information.



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# File 'lib/irb/input-method.rb', line 289

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 ⇒ Object

For debug message



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# File 'lib/irb/input-method.rb', line 334

def inspect
  config = Reline::Config.new
  str = "ReidlineInputMethod 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) ⇒ Object

Returns the current line number for #io.

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

See IO#lineno for more information.



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# File 'lib/irb/input-method.rb', line 324

def line(line_no)
  @line[line_no]
end

#readable_after_eof? ⇒ Boolean

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

See IO#eof for more information.

Returns:

  • (Boolean) 


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# File 'lib/irb/input-method.rb', line 315

def readable_after_eof?
  true
end