/usr/lib/ruby/1.9.1/irb/input-method.rb is in libruby1.9.1 1.9.3.484-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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# irb/input-method.rb - input methods used irb
# $Release Version: 0.9.6$
# $Revision: 25189 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#
require 'irb/src_encoding'
require 'irb/magic-file'
module IRB
#
# InputMethod
# StdioInputMethod
# FileInputMethod
# (ReadlineInputMethod)
#
STDIN_FILE_NAME = "(line)"
class InputMethod
@RCS_ID='-$Id: input-method.rb 25189 2009-10-02 12:04:37Z akr $-'
def initialize(file = STDIN_FILE_NAME)
@file_name = file
end
attr_reader :file_name
attr_accessor :prompt
def gets
IRB.fail NotImplementedError, "gets"
end
public :gets
def readable_atfer_eof?
false
end
end
class StdioInputMethod < InputMethod
def initialize
super
@line_no = 0
@line = []
@stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
@stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
end
def gets
print @prompt
line = @stdin.gets
@line[@line_no += 1] = line
end
def eof?
@stdin.eof?
end
def readable_atfer_eof?
true
end
def line(line_no)
@line[line_no]
end
def encoding
@stdin.external_encoding
end
end
class FileInputMethod < InputMethod
def initialize(file)
super
@io = IRB::MagicFile.open(file)
end
attr_reader :file_name
def eof?
@io.eof?
end
def gets
print @prompt
l = @io.gets
# print @prompt, l
l
end
def encoding
@io.external_encoding
end
end
begin
require "readline"
class ReadlineInputMethod < InputMethod
include Readline
def initialize
super
@line_no = 0
@line = []
@eof = false
@stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
@stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
end
def gets
Readline.input = @stdin
Readline.output = @stdout
if l = readline(@prompt, false)
HISTORY.push(l) if !l.empty?
@line[@line_no += 1] = l + "\n"
else
@eof = true
l
end
end
def eof?
@eof
end
def readable_atfer_eof?
true
end
def line(line_no)
@line[line_no]
end
def encoding
@stdin.external_encoding
end
end
rescue LoadError
end
end
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