Class: Perennial::Application::CommandEnv

Inherits:
Object
  • Object
show all
Includes:
Loggable
Defined in:
lib/perennial/application.rb

Direct Known Subclasses

Generator::CommandEnv

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Loggable

included, #logger

Class Method Details

.execute(blk, arguments) ⇒ Object

Executes a given block with given arguments in a specified environment. Used to provide the logger functionality as well as the ability to do things such as easily write generators.



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# File 'lib/perennial/application.rb', line 12

def self.execute(blk, arguments)
  klass = Class.new(self)
  klass.class_eval { define_method(:apply, &blk) }
  klass.new.apply(*arguments)
end

Instance Method Details

#ask(question, default = nil) ⇒ Object 



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# File 'lib/perennial/application.rb', line 23

def ask(question, default = nil)
  question_text = question.to_s.strip
  question_text << " "
  question_text << "(default: #{default}) " unless default.nil?
  result = Readline.readline(question_text)
  result.blank? ? default : result
end

#ask_password(question) ⇒ Object 



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# File 'lib/perennial/application.rb', line 31

def ask_password(question)
  system "stty -echo" 
  line = Readline.readline("#{question.to_s.strip} ").strip
  system "stty echo"
  print "\n"
  return line
end

#die!(message) ⇒ Object 



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# File 'lib/perennial/application.rb', line 39

def die!(message)
  $stderr.puts message
  exit! 1
end

#yes?(question) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/perennial/application.rb', line 18

def yes?(question)
  result = Readline.readline("#{question.to_s.strip} (y/n) ")
  result.downcase[0] == ?y
end