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Edit File : config.rb \| Size : 8.66 KB
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{ bind-tty-special-chars blink-matching-paren byte-oriented completion-ignore-case convert-meta disable-completion enable-keypad expand-tilde history-preserve-point history-size horizontal-scroll-mode input-meta keyseq-timeout mark-directories mark-modified-lines mark-symlinked-directories match-hidden-files meta-flag output-meta page-completions prefer-visible-bell print-completions-horizontally show-all-if-ambiguous show-all-if-unmodified visible-stats 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 def initialize @additional_key_bindings = {} # from inputrc @default_key_bindings = {} # environment-dependent @skip_section = nil @if_stack = nil @editing_mode_label = :emacs @keymap_label = :emacs @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 end def reset if editing_mode_is?(:vi_command) @editing_mode_label = :vi_insert end @additional_key_bindings = {} @default_key_bindings = {} 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.respond_to?(:any?) ? val : [val]).any?(@editing_mode_label) end def keymap @key_actors[@keymap_label] 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 def read(file = nil) file \|\|= 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 # override @default_key_bindings with @additional_key_bindings @default_key_bindings.merge(@additional_key_bindings) end def add_default_key_binding(keystroke, target) @default_key_bindings[keystroke] = target end def reset_default_key_bindings @default_key_bindings = {} end def read_lines(lines, file = nil) conditions = [@skip_section, @if_stack] @skip_section = nil @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) next end next if @skip_section 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 keystroke, func = bind_key(key, func_name) next unless keystroke @additional_key_bindings[keystroke] = func end end unless @if_stack.empty? raise InvalidInputrc, "#{file}:#{@if_stack.last[1]}: unclosed if" end ensure @skip_section, @if_stack = conditions end def handle_directive(directive, file, no) directive, args = directive.split(' ') case directive when 'if' condition = false case args when 'mode' when 'term' when 'version' else # application name condition = true if args == 'Ruby' condition = true if args == 'Reline' end @if_stack << [file, no, @skip_section] @skip_section = !condition when 'else' if @if_stack.empty? raise InvalidInputrc, "#{file}:#{no}: unmatched else" end @skip_section = !@skip_section when 'endif' if @if_stack.empty? raise InvalidInputrc, "#{file}:#{no}: unmatched endif" end @skip_section = @if_stack.pop when 'include' read(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 when 'vi' @editing_mode_label = :vi_insert @keymap_label = :vi_insert end when 'keymap' case value when 'emacs', 'emacs-standard', 'emacs-meta', 'emacs-ctlx' @keymap_label = :emacs when 'vi', 'vi-move', 'vi-command' @keymap_label = :vi_command when 'vi-insert' @keymap_label = :vi_insert 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) if str =~ /\A"(.)"\z/ parse_keyseq($1).map(&:chr).join else parse_keyseq(str).map(&:chr).join end 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 end Back

Edit File : config.rb | Size : 8.66 KB

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{
    bind-tty-special-chars
    blink-matching-paren
    byte-oriented
    completion-ignore-case
    convert-meta
    disable-completion
    enable-keypad
    expand-tilde
    history-preserve-point
    history-size
    horizontal-scroll-mode
    input-meta
    keyseq-timeout
    mark-directories
    mark-modified-lines
    mark-symlinked-directories
    match-hidden-files
    meta-flag
    output-meta
    page-completions
    prefer-visible-bell
    print-completions-horizontally
    show-all-if-ambiguous
    show-all-if-unmodified
    visible-stats
    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

def initialize
    @additional_key_bindings = {} # from inputrc
    @default_key_bindings = {} # environment-dependent
    @skip_section = nil
    @if_stack = nil
    @editing_mode_label = :emacs
    @keymap_label = :emacs
    @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
  end

def reset
    if editing_mode_is?(:vi_command)
      @editing_mode_label = :vi_insert
    end
    @additional_key_bindings = {}
    @default_key_bindings = {}
  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.respond_to?(:any?) ? val : [val]).any?(@editing_mode_label)
  end

def keymap
    @key_actors[@keymap_label]
  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

def read(file = nil)
    file ||= 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
    # override @default_key_bindings with @additional_key_bindings
    @default_key_bindings.merge(@additional_key_bindings)
  end

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

def reset_default_key_bindings
    @default_key_bindings = {}
  end

def read_lines(lines, file = nil)
    conditions = [@skip_section, @if_stack]
    @skip_section = nil
    @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)
        next
      end

next if @skip_section

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
        keystroke, func = bind_key(key, func_name)
        next unless keystroke
        @additional_key_bindings[keystroke] = func
      end
    end
    unless @if_stack.empty?
      raise InvalidInputrc, "#{file}:#{@if_stack.last[1]}: unclosed if"
    end
  ensure
    @skip_section, @if_stack = conditions
  end

def handle_directive(directive, file, no)
    directive, args = directive.split(' ')
    case directive
    when 'if'
      condition = false
      case args
      when 'mode'
      when 'term'
      when 'version'
      else # application name
        condition = true if args == 'Ruby'
        condition = true if args == 'Reline'
      end
      @if_stack << [file, no, @skip_section]
      @skip_section = !condition
    when 'else'
      if @if_stack.empty?
        raise InvalidInputrc, "#{file}:#{no}: unmatched else"
      end
      @skip_section = !@skip_section
    when 'endif'
      if @if_stack.empty?
        raise InvalidInputrc, "#{file}:#{no}: unmatched endif"
      end
      @skip_section = @if_stack.pop
    when 'include'
      read(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
      when 'vi'
        @editing_mode_label = :vi_insert
        @keymap_label = :vi_insert
      end
    when 'keymap'
      case value
      when 'emacs', 'emacs-standard', 'emacs-meta', 'emacs-ctlx'
        @keymap_label = :emacs
      when 'vi', 'vi-move', 'vi-command'
        @keymap_label = :vi_command
      when 'vi-insert'
        @keymap_label = :vi_insert
      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)
    if str =~ /\A"(.*)"\z/
      parse_keyseq($1).map(&:chr).join
    else
      parse_keyseq(str).map(&:chr).join
    end
  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
end

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