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config.rb

class Reline::Config
  attr_reader :test_mode

KEYSEQ_PATTERN = /\\(?:C|Control)-[A-Za-z_]|\\(?:M|Meta)-[0-9A-Za-z_]|\\(?:C|Control)-(?:M|Meta)-[A-Za-z_]|\\(?:M|Meta)-(?:C|Control)-[A-Za-z_]|\\e|\\[\\\"\'abdfnrtv]|\\\d{1,3}|\\x\h{1,2}|./

class InvalidInputrc < RuntimeError
    attr_accessor :file, :lineno
  end

VARIABLE_NAMES = %w{
    completion-ignore-case
    convert-meta
    disable-completion
    history-size
    keyseq-timeout
    show-all-if-ambiguous
    show-mode-in-prompt
    vi-cmd-mode-string
    vi-ins-mode-string
    emacs-mode-string
    enable-bracketed-paste
    isearch-terminators
  }
  VARIABLE_NAME_SYMBOLS = VARIABLE_NAMES.map { |v| :"#{v.tr(?-, ?_)}" }
  VARIABLE_NAME_SYMBOLS.each do |v|
    attr_accessor v
  end

attr_accessor :autocompletion

def initialize
    @additional_key_bindings = {} # from inputrc
    @additional_key_bindings[:emacs] = {}
    @additional_key_bindings[:vi_insert] = {}
    @additional_key_bindings[:vi_command] = {}
    @oneshot_key_bindings = {}
    @editing_mode_label = :emacs
    @keymap_label = :emacs
    @keymap_prefix = []
    @key_actors = {}
    @key_actors[:emacs] = Reline::KeyActor::Emacs.new
    @key_actors[:vi_insert] = Reline::KeyActor::ViInsert.new
    @key_actors[:vi_command] = Reline::KeyActor::ViCommand.new
    @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 = true if seven_bit_encoding?(Reline::IOGate.encoding)
    @loaded = false
    @enable_bracketed_paste = true
  end

def reset
    if editing_mode_is?(:vi_command)
      @editing_mode_label = :vi_insert
    end
    @oneshot_key_bindings.clear
  end

def editing_mode
    @key_actors[@editing_mode_label]
  end

def editing_mode=(val)
    @editing_mode_label = val
  end

def editing_mode_is?(*val)
    val.any?(@editing_mode_label)
  end

def keymap
    @key_actors[@keymap_label]
  end

def loaded?
    @loaded
  end

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

private def default_inputrc_path
    @default_inputrc_path ||= inputrc_path
  end

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

def key_bindings
    # The key bindings for each editing mode will be overwritten by the user-defined ones.
    kb = @key_actors[@editing_mode_label].default_key_bindings.dup
    kb.merge!(@additional_key_bindings[@editing_mode_label])
    kb.merge!(@oneshot_key_bindings)
    kb
  end

def add_oneshot_key_binding(keystroke, target)
    @oneshot_key_bindings[keystroke] = target
  end

def reset_oneshot_key_bindings
    @oneshot_key_bindings.clear
  end

def add_default_key_binding_by_keymap(keymap, keystroke, target)
    @key_actors[keymap].default_key_bindings[keystroke] = target
  end

def add_default_key_binding(keystroke, target)
    @key_actors[@keymap_label].default_key_bindings[keystroke] = target
  end

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
        var, value = $1.downcase, $2
        bind_variable(var, value)
        next
      when /\s*("#{KEYSEQ_PATTERN}+")\s*:\s*(.*)\s*$/o
        key, func_name = $1, $2
        func_name = func_name.split.first
        keystroke, func = bind_key(key, func_name)
        next unless keystroke
        @additional_key_bindings[@keymap_label][@keymap_prefix + keystroke] = func
      end
    end
    unless if_stack.empty?
      raise InvalidInputrc, "#{file}:#{if_stack.last[0]}: unclosed if"
    end
  end

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

def bind_variable(name, value)
    case name
    when 'history-size'
      begin
        @history_size = Integer(value)
      rescue ArgumentError
        @history_size = 500
      end
    when 'bell-style'
      @bell_style =
        case value
        when 'none', 'off'
          :none
        when 'audible', 'on'
          :audible
        when 'visible'
          :visible
        else
          :audible
        end
    when 'comment-begin'
      @comment_begin = value.dup
    when 'completion-query-items'
      @completion_query_items = value.to_i
    when 'isearch-terminators'
      @isearch_terminators = retrieve_string(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(value)
    when 'vi-ins-mode-string'
      @vi_ins_mode_string = retrieve_string(value)
    when 'emacs-mode-string'
      @emacs_mode_string = retrieve_string(value)
    when *VARIABLE_NAMES then
      variable_name = :"@#{name.tr(?-, ?_)}"
      instance_variable_set(variable_name, value.nil? || value == '1' || value == 'on')
    end
  end

def retrieve_string(str)
    str = $1 if str =~ /\A"(.*)"\z/
    parse_keyseq(str).map { |c| c.chr(Reline.encoding_system_needs) }.join
  end

def bind_key(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.tr(?-, ?_).to_sym # It must be macro.
    end
    [keyseq, func]
  end

def key_notation_to_code(notation)
    case notation
    when /\\(?:C|Control)-([A-Za-z_])/
      (1 + $1.downcase.ord - ?a.ord)
    when /\\(?:M|Meta)-([0-9A-Za-z_])/
      modified_key = $1
      case $1
      when /[0-9]/
        ?\M-0.bytes.first + (modified_key.ord - ?0.ord)
      when /[A-Z]/
        ?\M-A.bytes.first + (modified_key.ord - ?A.ord)
      when /[a-z]/
        ?\M-a.bytes.first + (modified_key.ord - ?a.ord)
      end
    when /\\(?:C|Control)-(?:M|Meta)-[A-Za-z_]/, /\\(?:M|Meta)-(?:C|Control)-[A-Za-z_]/
    # 129 M-^A
    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

def parse_keyseq(str)
    ret = []
    str.scan(KEYSEQ_PATTERN) do
      ret << key_notation_to_code($&)
    end
    ret
  end

private def seven_bit_encoding?(encoding)
    encoding == Encoding::US_ASCII
  end
end

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/linksafe	drwxr-xr-x	2024-08-07 05:03:21
..	dir	-	root/linksafe	drwxr-xr-x	2024-08-07 05:03:28
key_actor	dir	-	root/linksafe	drwxr-xr-x	2024-08-07 05:03:21
unicode	dir	-	root/linksafe	drwxr-xr-x	2024-08-07 05:03:21
ansi.rb	text/x-ruby	9.51 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
config.rb	text/x-ruby	9.96 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
face.rb	text/x-ruby	4.79 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
general_io.rb	text/x-ruby	1.58 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
history.rb	text/x-ruby	1.87 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
key_actor.rb	text/x-ruby	169 B	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
key_stroke.rb	text/x-ruby	3.8 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
kill_ring.rb	text/x-ruby	2.37 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
line_editor.rb	text/x-ruby	81.1 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
terminfo.rb	text/x-ruby	4.34 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
unicode.rb	text/x-ruby	21.7 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
version.rb	text/x-ruby	38 B	root/linksafe	-rw-r--r--	2024-07-23 12:52:46
windows.rb	text/x-ruby	16.57 KB	root/linksafe	-rw-r--r--	2024-07-23 12:52:46