class SCHash
end

require 'hashie/hash'
require 'hashie/mash'

module Hashie
  class SCHash < Hashie::Mash
    protected

    def convert_key(key) #:nodoc:
      underscore_string(key.to_s)
    end

    # Unlike its parent Mash, a Rash will convert other Hashie::Hash values to a Rash when assigning
    # instead of respecting the existing subclass
    def convert_value(val, duping=false) #:nodoc:
      case val
        when self.class
          val.dup
        when ::Hash
          val = val.dup if duping
          self.class.new(val)
        when Array
          val.collect{ |e| convert_value(e) }
        else
          val
      end
    end

    # converts a camel_cased string to a underscore string
    # subs spaces with underscores, strips whitespace
    # Same way ActiveSupport does string.underscore
    def underscore_string(str)
      str.to_s.strip.
          gsub(' ', '_').
          gsub(/::/, '/').
          gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
          gsub(/([a-z\d])([A-Z])/,'\1_\2').
          tr("-", "_").
          squeeze("_").
          downcase
    end
  end
end