Class: Mishmash

Inherits:
Hash
  • Object
show all
Defined in:
lib/mishmash.rb

Instance Method Summary collapse

Constructor Details

#initialize(input, schema = {}, output = {}) ⇒ Mishmash

Returns a new instance of Mishmash.



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# File 'lib/mishmash.rb', line 2

def initialize(input, schema={}, output={})
  input.each_pair do |key,value|
    self[key] = value
  end
  self.translate(schema, output) unless schema.empty?
end

Instance Method Details

#translate(schema, output = {}) ⇒ Object 



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# File 'lib/mishmash.rb', line 9

def translate(schema, output={})
  return unless self.is_a?(Hash) && schema.is_a?(Hash)
  (self.keys | schema.keys).each_with_object({}) do |k, diff|
    if self[k] && schema[k] && self[k] != schema[k]
      if self[k].is_a?(Hash) && schema[k].is_a?(Hash)
       Mishmash.new(self[k]).translate(schema[k], output)
      elsif self[k].is_a?(Array) &&  schema[k].is_a?(Array)
        output[schema[k][0]] = self[k].map do |kk,vv|
          Mishmash.new(kk).translate(schema[k][1])
        end
      elsif self[k].is_a?(Array) && schema[k].is_a?(Hash)
        self[k].each do |kk|
          if  (self[k].map(&:values).flatten & schema[k].values).empty? || !(kk.values & schema[k].values).empty?
            Mishmash.new(kk).translate(schema[k], output) 
          end
        end
      elsif output[schema[k]]
        output[schema[k]] = [output[schema[k]]] unless output[schema[k]].is_a?(Array)
        output[schema[k]].push(self[k])
       elsif self[k]
        output[schema[k]] = self[k]
      end
    end
  end
  return Mishmash.new(output)
end