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Class: Gem::SilentUI

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, StreamUI
Instance Chain:
self, StreamUI
Inherits: Gem::StreamUI
Defined in: lib/rubygems/user_interaction.rb

Overview

SilentUI is a UI choice that is absolutely silent.

Class Method Summary

  • .new ⇒ SilentUI constructor

    The SilentUI has no arguments as it does not use any stream.

StreamUI - Inherited

.new

Creates a new StreamUI wrapping in_stream for user input, out_stream for standard output, err_stream for error output.

Instance Attribute Summary

StreamUI - Inherited

#errs

The error stream.
#ins

The input stream.
#outs

The output stream.
#tty?

Returns true if TTY methods should be used on this StreamUI.

Instance Method Summary

StreamUI - Inherited

#_gets_noecho

See additional method definition at line 316.
#alert

Display an informational alert.
#alert_error

Display an error message in a location expected to get error messages.
#alert_warning

Display a warning on stderr.
#ask

Ask a question.
#ask_for_password

Ask for a password.
#ask_yes_no

Ask a question.
#backtrace

Prints a formatted backtrace to the errors stream if backtraces are enabled.
#choose_from_list

Choose from a list of options.
#close,
#debug

Display a debug message on the same location as error messages.
#download_reporter

Return a download reporter object chosen from the current verbosity.
#progress_reporter

Return a progress reporter object chosen from the current verbosity.
#say

Display a statement.
#terminate_interaction

Terminate the application with exit code status, running any exit handlers that might have been defined.

Constructor Details

.new ⇒ SilentUI

The SilentUI has no arguments as it does not use any stream.

[ GitHub ] 

  


# File 'lib/rubygems/user_interaction.rb', line 676



def initialize
  reader, writer = nil, nil

  begin
    reader = File.open('/dev/null', 'r')
    writer = File.open('/dev/null', 'w')
  rescue Errno::ENOENT
    reader = File.open('nul', 'r')
    writer = File.open('nul', 'w')
  end

  super reader, writer, writer, false
end


  







Instance Method Details



  

    #close  
  

  [ GitHub ]


  

  


# File 'lib/rubygems/user_interaction.rb', line 690



def close
  super
  @ins.close
  @outs.close
end