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Class: IRB::StdioInputMethod

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
ReadlineInputMethod, ReidlineInputMethod, RelineInputMethod
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, InputMethod
Instance Chain:
self, InputMethod
Inherits: IRB::InputMethod
Defined in: lib/irb/input-method.rb

Constant Summary

InputMethod - Inherited

BASIC_WORD_BREAK_CHARACTERS

Class Method Summary

Instance Attribute Summary

InputMethod - Inherited

#prompt

The irb prompt associated with this input method.
#prompting?,
#readable_after_eof?

Whether this input method is still readable when there is no more data to read.
#support_history_saving?

Instance Method Summary

InputMethod - Inherited

#gets

Reads the next line from this input method.
#inspect

For debug message.
#winsize

Constructor Details

.new ⇒ StdioInputMethod

Creates a new input method object

[ GitHub ] 

  


# File 'lib/irb/input-method.rb', line 59



def initialize
  @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


  







Instance Attribute Details



  

    #eof?  ⇒ Boolean  (readonly)
  



  

    

Whether the end of this input method has been reached, returns true if there is no more data to read.



See IO#eof? for more information.


  





  


  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 82



def eof?
  if @stdin.wait_readable(0.00001)
    c = @stdin.getc
    result = c.nil? ? true : false
    @stdin.ungetc(c) unless c.nil?
    result
  else # buffer is empty
    false
  end
end


  








  

    #prompting?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 101



def prompting?
  STDIN.tty?
end


  








  

    #readable_after_eof?  ⇒ Boolean  (readonly)
  



  

    

Whether this input method is still readable when there is no more data to read.



See IO#eof for more information.


  





  


  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 97



def readable_after_eof?
  true
end


  







Instance Method Details



  

    #encoding  
  



  

    

The external encoding for standard input.


  



  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 115



def encoding
  @stdin.external_encoding
end


  








  

    #gets  
  



  

    

Reads the next line from this input method.



See IO#gets for more information.


  



  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 69



def gets
  # Workaround for debug compatibility test https://github.com/ruby/debug/pull/1100
  puts if ENV['RUBY_DEBUG_TEST_UI']

  print @prompt
  line = @stdin.gets
  @line[@line_no += 1] = line
end


  








  

    #inspect  
  



  

    

For debug message


  



  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 120



def inspect
  'StdioInputMethod'
end


  








  

    #line(line_no)  
  



  

    

Returns the current line number for #io.



#line counts the number of times #gets is called.



See IO#lineno for more information.


  



  [ GitHub ]


  

  


# File 'lib/irb/input-method.rb', line 110



def line(line_no)
  @line[line_no]
end