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require 'pathname'
class Reline::Config
attr_reader :test_mode
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
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
}
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 = []
@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
@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 read(file = DEFAULT_PATH)
file = ENV['INPUTRC'] if ENV['INPUTRC']
begin
if file.respond_to?(:readlines)
lines = file.readlines
else
lines = File.readlines(file)
end
rescue Errno::ENOENT
return nil
end
read_lines(lines)
self
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)
lines.each do |line|
next if line.start_with?('#')
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
keystroke, func = bind_key(key, func_name)
@additional_key_bindings[keystroke] = func
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'
condition = true if args == 'Reline'
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
when 'keyseq-timeout'
@keyseq_timeout = value.to_i
end
end
def bind_key(key, func_name)
if key =~ /"(.*)"/
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-([A-Za-z_])/
(1 + $1.downcase.ord - ?a.ord)
when /\\M-([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-M-[A-Za-z_]/, /\\M-C-[A-Za-z_]/
# 129 M-^A
when /\\(\d{1,3})/ then $1.to_i(8) # octal
when /\\x(\h{1,2})/ then $1.to_i(16) # hexadecimal
when "\\e" then ?\e.ord
when "\\\\" then ?\\.ord
when "\\\"" then ?".ord
when "\\'" then ?'.ord
when "\\a" then ?\a.ord
when "\\b" then ?\b.ord
when "\\d" then ?\d.ord
when "\\f" then ?\f.ord
when "\\n" then ?\n.ord
when "\\r" then ?\r.ord
when "\\t" then ?\t.ord
when "\\v" then ?\v.ord
else notation.ord
end
end
def parse_keyseq(str)
# TODO: Control- and Meta-
ret = []
while str =~ /(\\C-[A-Za-z_]|\\M-[0-9A-Za-z_]|\\C-M-[A-Za-z_]|\\M-C-[A-Za-z_]|\\e|\\\\|\\"|\\'|\\a|\\b|\\d|\\f|\\n|\\r|\\t|\\v|\\\d{1,3}|\\x\h{1,2}|.)/
ret << key_notation_to_code($&)
str = $'
end
ret
end
end
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