module Ambition::Adapters::AmbitiousSphinx
  # Helper for the other
  class Base
    # Does the string have an Ultrasphinx field?
    def has_field? str
      str =~ /:/
    end
    
    # Does the string have any Ultrasphinx operators?
    def has_operator? str
      str =~ /(AND|OR|NOT)/
    end
    
    # Should this string be quotified? It needs to happen if the string doesn't
    # have an operator or a field.
    def needs_quoting? str
      not (has_operator?(str) or has_field?(str))
    end
    
    # Quote the string if it needs it.
    def quotify str
      if needs_quoting?(str)
        %Q("#{str}")
      else
        str
      end
    end
  end
end