ruby_monkeypatch

gistfile1.txt

module Enumerable
  # Convenient method instead of checking a.nil? || a.empty?

  # Example:
    # nil.emptil?             ==> true
    # [].emptil?              ==> true
    # {}.emptil?              ==> true
    # {:foo => 'bar'}.emptil? ==> false
    # [1,2,3].emptil?         ==> false

  def emptil?
    self.respond_to?('empty?') && self.empty?
  end
  
  # Checks if string is valid xml
  def is_xml?
    require 'nokogiri'
    
    begin
      bad_doc = Nokogiri::XML(self) { |config| config.strict }
    rescue Nokogiri::XML::SyntaxError => e
      return false
    end
    
    return true
  end
  
  # Checks if string is valid json
  def is_json?
    begin
      JSON.parse(self) 
    rescue Exception => e
      return false
    end
    
    return true
  end
  
  # Checks if string is valid marshal
  def is_marshal?
    begin
      Marshal.load(self)
    rescue Exception => e
      return false
    end
    
    return true
  end
  
  
end