josephholsten/discodactyl

module Discodactyl # :nodoc:
  # Basic URI templates as used in XRD. Not to be confused with
  # http://tools.ietf.org/html/draft-gregorio-uritemplate
  class URITemplate
    attr_accessor :pattern
    def initialize(pattern)
      @pattern = pattern
    end
    def to_uri(params)
      require 'cgi'
      uri = @pattern
      while /\{%([^}]*)\}/ =~ uri
        uri.gsub!($~[0], params[$~[1]])
      end
      while /\{([^}]*)\}/ =~ uri
        uri.gsub!($~[0], CGI::escape(params[$~[1]].to_s))
      end
      uri
    end

    def ==(other)
      return false unless other.class == self.class
      return false unless other.instance_variables == self.instance_variables
      self.instance_variables.each do |var|
        self_var = self.instance_variable_get(var)
        other_var = other.instance_variable_get(var)
        return false unless self_var.eql?(other_var)
      end
      true
    end
  end
end