Module: Artoo::Utility

Included in:
Connection, Device, Robot
Defined in:
lib/artoo/utility.rb

Overview

Utility methods used for convertions

Instance Method Summary collapse

Instance Method Details

#classify(word) ⇒ Class

Convert a underscore string to a class

Examples:

"underscore_word" > UnderscoreWord

Returns:

  • (Class) —

    converted class



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# File 'lib/artoo/utility.rb', line 37

def classify(word)
  underscore(word).gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
end

#constantize(camel_cased_word) ⇒ Constant

Converts camel_cased_word to constant

Examples:

"CamelCasedWord" > CamelCasedWord

Returns:

  • (Constant) —

    Converted constant



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# File 'lib/artoo/utility.rb', line 8

def constantize(camel_cased_word)
  names = camel_cased_word.split('::')
  names.shift if names.empty? || names.first.empty?

  names.inject(Object) do |constant, name|
    if constant == Object
      constant.const_get(name)
    else
      candidate = constant.const_get(name)
      next candidate if constant.const_defined?(name, false)
      next candidate unless Object.const_defined?(name)

      # Go down the ancestors to check it it's owned
      # directly before we reach Object or the end of ancestors.
      constant = constant.ancestors.inject do |const, ancestor|
        break const    if ancestor == Object
        break ancestor if ancestor.const_defined?(name, false)
        const
      end

      # owner is in Object, so raise
      constant.const_get(name, false)
    end
  end
end

#current_class ⇒ Class

Returns current actor class.

Returns:

  • (Class) —

    current actor class



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# File 'lib/artoo/utility.rb', line 64

def current_class
  Celluloid::Actor.current.class
end

#current_instance ⇒ Celluloid::Actor

Returns current instance.

Returns:

  • (Celluloid::Actor) —

    current instance



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# File 'lib/artoo/utility.rb', line 59

def current_instance
  Celluloid::Actor.current
end

#random_string ⇒ String

Returns random string.

Returns:

  • (String) —

    random string



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# File 'lib/artoo/utility.rb', line 42

def random_string
  (0...8).map{65.+(rand(26)).chr}.join
end

#underscore(camel_cased_word) ⇒ Object

Converts camel cased word to downcased with undercores

Examples:

CamelCase > camel_case



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# File 'lib/artoo/utility.rb', line 48

def underscore(camel_cased_word)
  word = camel_cased_word.to_s.dup
  word.gsub!(/::/, '/')
  word.gsub!(/([A-Z]+)([A-Z][a-z])/,'\1_\2')
  word.gsub!(/([a-z\d])([A-Z])/,'\1_\2')
  word.tr!("-", "_")
  word.downcase!
  word
end