JezK
Edit File: input-method.rb
# # irb/input-method.rb - input methods used irb # $Release Version: 0.9.5$ # $Revision: 11708 $ # $Date: 2007-02-13 08:01:19 +0900 (Tue, 13 Feb 2007) $ # by Keiju ISHITSUKA(keiju@ruby-lang.org) # # -- # # # module IRB # # InputMethod # StdioInputMethod # FileInputMethod # (ReadlineInputMethod) # STDIN_FILE_NAME = "(line)" class InputMethod @RCS_ID='-$Id: input-method.rb 11708 2007-02-12 23:01:19Z shyouhei $-' 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 = [] end def gets print @prompt @line[@line_no += 1] = $stdin.gets end def eof? $stdin.eof? end def readable_atfer_eof? true end def line(line_no) @line[line_no] end end class FileInputMethod < InputMethod def initialize(file) super @io = open(file) end attr_reader :file_name def eof? @io.eof? end def gets print @prompt l = @io.gets # print @prompt, l l end end begin require "readline" class ReadlineInputMethod < InputMethod include Readline def initialize super @line_no = 0 @line = [] @eof = false end def gets 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 end rescue LoadError end end