Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/string-mapper.rb

Class Method Summary collapse

Class Method Details

.add_mapper(name, mappings = {}, &def_val_block) ⇒ Object



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# File 'lib/string-mapper.rb', line 44

def self.add_mapper(name, mappings = {}, &def_val_block)
  accessor = "#{name}_mappings"
  cattr_accessor(accessor)
  self.send accessor + '=', mappings
  define_method "to_#{name}" do
    mapping = nil
    String.send(accessor).each do |key, value|
      regexp = if key.is_a?(Regexp)
        key
      else
        Regexp.new(key.to_s, Regexp::IGNORECASE)
      end
      if self =~ regexp
        mapping = if value.is_a?(String)
          eval('"'+value+'"')
        elsif value.is_a?(Proc)
          value.call
        else
          value
        end
        break
      end
    end
    if mapping.nil?
      (def_val_block && def_val_block.call(self))
    else
      mapping 
    end
  end
end