class IRB::ReidlineInputMethod

Public Class Methods

new() click to toggle source

Creates a new input method object using Readline

Calls superclass method IRB::InputMethod::new

# File 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

Public Instance Methods

auto_indent(&block) click to toggle source

# File irb/input-method.rb, line 282
def auto_indent(&block)
  @auto_indent_proc = block
end

check_termination(&block) click to toggle source

# File irb/input-method.rb, line 274
def check_termination(&block)
  @check_termination_proc = block
end

dynamic_prompt(&block) click to toggle source

# File irb/input-method.rb, line 278
def dynamic_prompt(&block)
  @prompt_proc = block
end

encoding() click to toggle source

The external encoding for standard input.

# File irb/input-method.rb, line 329
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 irb/input-method.rb, line 307
def eof?
  @eof
end

gets() click to toggle source

Reads the next line from this input method.

See IO#gets for more information.

# File 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() click to toggle source

For debug message

# File 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) 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 irb/input-method.rb, line 324
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 irb/input-method.rb, line 315
def readable_after_eof?
  true
end