class Reline::Config

Constants

KEYSEQ_PATTERN
VARIABLE_NAMES
VARIABLE_NAME_SYMBOLS

Attributes

autocompletion[RW]
test_mode[R]

Public Class Methods

new() click to toggle source
# File reline/config.rb, line 31
def initialize
  reset_variables
end

Public Instance Methods

add_default_key_binding(keystroke, target) click to toggle source
# File reline/config.rb, line 162
def add_default_key_binding(keystroke, target)
  add_default_key_binding_by_keymap(@keymap_label, keystroke, target)
end
add_default_key_binding_by_keymap(keymap, keystroke, target) click to toggle source
# File reline/config.rb, line 158
def add_default_key_binding_by_keymap(keymap, keystroke, target)
  @default_key_bindings[keymap].add(keystroke, target)
end
add_oneshot_key_binding(keystroke, target) click to toggle source
# File reline/config.rb, line 147
def add_oneshot_key_binding(keystroke, target)
  # IRB sets invalid keystroke [Reline::Key]. We should ignore it.
  return unless keystroke.all? { |c| c.is_a?(Integer) }

  @oneshot_key_bindings.add(keystroke, target)
end
bind_key(key, value) click to toggle source
# File reline/config.rb, line 314
def bind_key(key, value)
  keystroke, func = parse_key_binding(key, value)
  @additional_key_bindings[@keymap_label].add(@keymap_prefix + keystroke, func) if keystroke
end
bind_variable(name, value, raw_value) click to toggle source
# File reline/config.rb, line 247
def bind_variable(name, value, raw_value)
  case name
  when 'history-size'
    begin
      @history_size = Integer(value)
    rescue ArgumentError
      @history_size = 500
    end
  when 'isearch-terminators'
    @isearch_terminators = retrieve_string(raw_value)
  when 'editing-mode'
    case value
    when 'emacs'
      @editing_mode_label = :emacs
      @keymap_label = :emacs
      @keymap_prefix = []
    when 'vi'
      @editing_mode_label = :vi_insert
      @keymap_label = :vi_insert
      @keymap_prefix = []
    end
  when 'keymap'
    case value
    when 'emacs', 'emacs-standard'
      @keymap_label = :emacs
      @keymap_prefix = []
    when 'emacs-ctlx'
      @keymap_label = :emacs
      @keymap_prefix = [?\C-x.ord]
    when 'emacs-meta'
      @keymap_label = :emacs
      @keymap_prefix = [?\e.ord]
    when 'vi', 'vi-move', 'vi-command'
      @keymap_label = :vi_command
      @keymap_prefix = []
    when 'vi-insert'
      @keymap_label = :vi_insert
      @keymap_prefix = []
    end
  when 'keyseq-timeout'
    @keyseq_timeout = value.to_i
  when 'show-mode-in-prompt'
    case value
    when 'off'
      @show_mode_in_prompt = false
    when 'on'
      @show_mode_in_prompt = true
    else
      @show_mode_in_prompt = false
    end
  when 'vi-cmd-mode-string'
    @vi_cmd_mode_string = retrieve_string(raw_value)
  when 'vi-ins-mode-string'
    @vi_ins_mode_string = retrieve_string(raw_value)
  when 'emacs-mode-string'
    @emacs_mode_string = retrieve_string(raw_value)
  when *VARIABLE_NAMES then
    variable_name = :"@#{name.tr(?-, ?_)}"
    instance_variable_set(variable_name, value.nil? || value == '1' || value == 'on')
  end
end
editing_mode() click to toggle source
# File reline/config.rb, line 72
def editing_mode
  @default_key_bindings[@editing_mode_label]
end
editing_mode=(val) click to toggle source
# File reline/config.rb, line 76
def editing_mode=(val)
  @editing_mode_label = val
end
editing_mode_is?(*val) click to toggle source
# File reline/config.rb, line 80
def editing_mode_is?(*val)
  val.any?(@editing_mode_label)
end
handle_directive(directive, file, no, if_stack) click to toggle source
# File reline/config.rb, line 212
def handle_directive(directive, file, no, if_stack)
  directive, args = directive.split(' ')
  case directive
  when 'if'
    condition = false
    case args
    when /^mode=(vi|emacs)$/i
      mode = $1.downcase
      # NOTE: mode=vi means vi-insert mode
      mode = 'vi_insert' if mode == 'vi'
      if @editing_mode_label == mode.to_sym
        condition = true
      end
    when 'term'
    when 'version'
    else # application name
      condition = true if args == 'Ruby'
      condition = true if args == 'Reline'
    end
    if_stack << [no, !condition]
  when 'else'
    if if_stack.empty?
      raise InvalidInputrc, "#{file}:#{no}: unmatched else"
    end
    if_stack.last[1] = !if_stack.last[1]
  when 'endif'
    if if_stack.empty?
      raise InvalidInputrc, "#{file}:#{no}: unmatched endif"
    end
    if_stack.pop
  when 'include'
    read(File.expand_path(args))
  end
end
inputrc_path() click to toggle source
# File reline/config.rb, line 92
def inputrc_path
  case ENV['INPUTRC']
  when nil, ''
  else
    return File.expand_path(ENV['INPUTRC'])
  end

  # In the XDG Specification, if ~/.config/readline/inputrc exists, then
  # ~/.inputrc should not be read, but for compatibility with GNU Readline,
  # if ~/.inputrc exists, then it is given priority.
  home_rc_path = File.expand_path('~/.inputrc')
  return home_rc_path if File.exist?(home_rc_path)

  case path = ENV['XDG_CONFIG_HOME']
  when nil, ''
  else
    path = File.join(path, 'readline/inputrc')
    return path if File.exist?(path) and path == File.expand_path(path)
  end

  path = File.expand_path('~/.config/readline/inputrc')
  return path if File.exist?(path)

  return home_rc_path
end
key_bindings() click to toggle source
# File reline/config.rb, line 142
def key_bindings
  # The key bindings for each editing mode will be overwritten by the user-defined ones.
  Reline::KeyActor::Composite.new([@oneshot_key_bindings, @additional_key_bindings[@editing_mode_label], @default_key_bindings[@editing_mode_label]])
end
key_notation_to_code(notation) click to toggle source
# File reline/config.rb, line 333
def key_notation_to_code(notation)
  case notation
  when /(?:\\(?:C|Control)-\\(?:M|Meta)|\\(?:M|Meta)-\\(?:C|Control))-([A-Za-z_])/
    [?\e.ord, $1.ord % 32]
  when /\\(?:C|Control)-([A-Za-z_])/
    ($1.upcase.ord % 32)
  when /\\(?:M|Meta)-([0-9A-Za-z_])/
    [?\e.ord, $1.ord]
  when /\\(\d{1,3})/ then $1.to_i(8) # octal
  when /\\x(\h{1,2})/ then $1.to_i(16) # hexadecimal
  when "\\e" then ?\e.ord
  when "\\\\" then ?\\.ord
  when "\\\"" then ?".ord
  when "\\'" then ?'.ord
  when "\\a" then ?\a.ord
  when "\\b" then ?\b.ord
  when "\\d" then ?\d.ord
  when "\\f" then ?\f.ord
  when "\\n" then ?\n.ord
  when "\\r" then ?\r.ord
  when "\\t" then ?\t.ord
  when "\\v" then ?\v.ord
  else notation.ord
  end
end
keymap() click to toggle source
# File reline/config.rb, line 84
def keymap
  @default_key_bindings[@keymap_label]
end
loaded?() click to toggle source
# File reline/config.rb, line 88
def loaded?
  @loaded
end
parse_key_binding(key, func_name) click to toggle source
# File reline/config.rb, line 319
def parse_key_binding(key, func_name)
  if key =~ /\A"(.*)"\z/
    keyseq = parse_keyseq($1)
  else
    keyseq = nil
  end
  if func_name =~ /"(.*)"/
    func = parse_keyseq($1)
  else
    func = func_name.split.first.tr(?-, ?_).to_sym # It must be macro.
  end
  [keyseq, func]
end
parse_keyseq(str) click to toggle source
# File reline/config.rb, line 359
def parse_keyseq(str)
  str.scan(KEYSEQ_PATTERN).flat_map do |notation|
    key_notation_to_code(notation)
  end
end
read(file = nil) click to toggle source
# File reline/config.rb, line 122
def read(file = nil)
  @loaded = true
  file ||= default_inputrc_path
  begin
    if file.respond_to?(:readlines)
      lines = file.readlines
    else
      lines = File.readlines(file)
    end
  rescue Errno::ENOENT
    return nil
  end

  read_lines(lines, file)
  self
rescue InvalidInputrc => e
  warn e.message
  nil
end
read_lines(lines, file = nil) click to toggle source
# File reline/config.rb, line 166
def read_lines(lines, file = nil)
  if not lines.empty? and lines.first.encoding != Reline.encoding_system_needs
    begin
      lines = lines.map do |l|
        l.encode(Reline.encoding_system_needs)
      rescue Encoding::UndefinedConversionError
        mes = "The inputrc encoded in #{lines.first.encoding.name} can't be converted to the locale #{Reline.encoding_system_needs.name}."
        raise Reline::ConfigEncodingConversionError.new(mes)
      end
    end
  end
  if_stack = []

  lines.each_with_index do |line, no|
    next if line.match(/\A\s*#/)

    no += 1

    line = line.chomp.lstrip
    if line.start_with?('$')
      handle_directive(line[1..-1], file, no, if_stack)
      next
    end

    next if if_stack.any? { |_no, skip| skip }

    case line
    when /^set +([^ ]+) +(.+)/i
      # value ignores everything after a space, raw_value does not.
      var, value, raw_value = $1.downcase, $2.partition(' ').first, $2
      bind_variable(var, value, raw_value)
    when /^\s*(?:M|Meta)-([a-zA-Z_])\s*:\s*(.*)\s*$/o
      bind_key("\"\\M-#$1\"", $2)
    when /^\s*(?:C|Control)-([a-zA-Z_])\s*:\s*(.*)\s*$/o
      bind_key("\"\\C-#$1\"", $2)
    when /^\s*(?:(?:C|Control)-(?:M|Meta)|(?:M|Meta)-(?:C|Control))-([a-zA-Z_])\s*:\s*(.*)\s*$/o
      bind_key("\"\\M-\\C-#$1\"", $2)
    when /^\s*("#{KEYSEQ_PATTERN}+")\s*:\s*(.*)\s*$/o
      bind_key($1, $2)
    end
  end
  unless if_stack.empty?
    raise InvalidInputrc, "#{file}:#{if_stack.last[0]}: unclosed if"
  end
end
reload() click to toggle source
# File reline/config.rb, line 365
def reload
  reset_variables
  read
end
reset() click to toggle source
# File reline/config.rb, line 35
def reset
  if editing_mode_is?(:vi_command)
    @editing_mode_label = :vi_insert
  end
  @oneshot_key_bindings.clear
end
reset_oneshot_key_bindings() click to toggle source
# File reline/config.rb, line 154
def reset_oneshot_key_bindings
  @oneshot_key_bindings.clear
end
reset_variables() click to toggle source
# File reline/config.rb, line 42
def reset_variables
  @additional_key_bindings = { # from inputrc
    emacs: Reline::KeyActor::Base.new,
    vi_insert: Reline::KeyActor::Base.new,
    vi_command: Reline::KeyActor::Base.new
  }
  @oneshot_key_bindings = Reline::KeyActor::Base.new
  @editing_mode_label = :emacs
  @keymap_label = :emacs
  @keymap_prefix = []
  @default_key_bindings = {
    emacs: Reline::KeyActor::Base.new(Reline::KeyActor::EMACS_MAPPING),
    vi_insert: Reline::KeyActor::Base.new(Reline::KeyActor::VI_INSERT_MAPPING),
    vi_command: Reline::KeyActor::Base.new(Reline::KeyActor::VI_COMMAND_MAPPING)
  }
  @vi_cmd_mode_string = '(cmd)'
  @vi_ins_mode_string = '(ins)'
  @emacs_mode_string = '@'
  # https://tiswww.case.edu/php/chet/readline/readline.html#IDX25
  @history_size = -1 # unlimited
  @keyseq_timeout = 500
  @test_mode = false
  @autocompletion = false
  @convert_meta = seven_bit_encoding?(Reline::IOGate.encoding)
  @loaded = false
  @enable_bracketed_paste = true
  @show_mode_in_prompt = false
  @default_inputrc_path = nil
end
retrieve_string(str) click to toggle source
# File reline/config.rb, line 309
def retrieve_string(str)
  str = $1 if str =~ /\A"(.*)"\z/
  parse_keyseq(str).map { |c| c.chr(Reline.encoding_system_needs) }.join
end

Private Instance Methods

default_inputrc_path() click to toggle source
# File reline/config.rb, line 118
        def default_inputrc_path
  @default_inputrc_path ||= inputrc_path
end
seven_bit_encoding?(encoding) click to toggle source
# File reline/config.rb, line 370
        def seven_bit_encoding?(encoding)
  encoding == Encoding::US_ASCII
end