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require 'pathname'
class Reline::Config
DEFAULT_PATH = Pathname.new(Dir.home).join('.inputrc')
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
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
}
VARIABLE_NAME_SYMBOLS = VARIABLE_NAMES.map { |v| :"#{v.tr(?-, ?_)}" }
VARIABLE_NAME_SYMBOLS.each do |v|
attr_accessor v
end
def initialize
@skip_section = nil
@if_stack = []
@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
@history_size = 500
end
def reset
if editing_mode_is?(:vi_command)
@editing_mode_label = :vi_insert
end
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 read(file = DEFAULT_PATH)
file = ENV['INPUTRC'] if ENV['INPUTRC']
begin
if file.respond_to?(:readlines)
lines = file.readlines
else
File.open(file, 'rt') do |f|
lines = f.readlines
end
end
rescue Errno::ENOENT
$stderr.puts "no such file #{file}"
return nil
end
read_lines(lines)
self
end
def read_lines(lines)
lines.each do |line|
line = line.chomp.gsub(/^\s*/, '')
if line[0, 1] == '$'
handle_directive(line[1..-1])
next
end
next if @skip_section
if line.match(/^set +([^ ]+) +([^ ]+)/i)
var, value = $1.downcase, $2.downcase
bind_variable(var, value)
next
end
if line =~ /\s*(.*)\s*:\s*(.*)\s*$/
key, func_name = $1, $2
bind_key(key, func_name)
end
end
end
def handle_directive(directive)
directive, args = directive.split(' ')
case directive
when 'if'
condition = false
case args # TODO: variables
when 'mode'
when 'term'
when 'version'
else # application name
condition = true if args == 'Ruby'
end
unless @skip_section.nil?
@if_stack << @skip_section
end
@skip_section = !condition
when 'else'
@skip_section = !@skip_section
when 'endif'
@skip_section = nil
unless @if_stack.empty?
@skip_section = @if_stack.pop
end
when 'include'
read(args)
end
end
def bind_variable(name, value)
case name
when VARIABLE_NAMES then
variable_name = :"@#{name.tr(?-, ?_)}"
instance_variable_set(variable_name, value.nil? || value == '1' || value == 'on')
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 = instance_eval(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
end
end
def bind_key(key, func_name)
if key =~ /"(.*)"/
keyseq = parse_keyseq($1).force_encoding('ASCII-8BIT')
else
keyseq = nil
end
if func_name =~ /"(.*)"/
func = parse_keyseq($1).force_encoding('ASCII-8BIT')
else
func = func_name.to_sym # It must be macro.
end
[keyseq, func]
end
def key_notation_to_char(notation)
case notation
when /\\C-([A-Za-z_])/
(1 + $1.downcase.ord - ?a.ord).chr('ASCII-8BIT')
when /\\M-([0-9A-Za-z_])/
modified_key = $1
code =
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
code.chr('ASCII-8BIT')
when /\\C-M-[A-Za-z_]/, /\\M-C-[A-Za-z_]/
# 129 M-^A
when /\\(\d{1,3})/ then $1.to_i(8).chr # octal
when /\\x(\h{1,2})/ then $1.to_i(16).chr # hexadecimal
when "\\e" then ?\e
when "\\\\" then ?\\
when "\\\"" then ?"
when "\\'" then ?'
when "\\a" then ?\a
when "\\b" then ?\b
when "\\d" then ?\d
when "\\f" then ?\f
when "\\n" then ?\n
when "\\r" then ?\r
when "\\t" then ?\t
when "\\v" then ?\v
else notation
end
end
def parse_keyseq(str)
# TODO: Control- and Meta-
ret = String.new(encoding: 'ASCII-8BIT')
while str =~ /(\\C-[A-Za-z_]|\\M-[0-9A-Za-z_]|\\C-M-[A-Za-z_]|\\M-C-[A-Za-z_]|\\e|\\\\|\\"|\\'|\\a|\\b|\\d|\\f|\\n|\\r|\\t|\\v|\\\d{1,3}|\\x\h{1,2}|.)/
ret << key_notation_to_char($&)
str = $'
end
ret
end
end
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