A factory method that returns a new segment instance appropriate for the format of the given string.

Source Code

# File action_controller/routing/builder.rb, line 37
def segment_for(string)
  segment = case string
    when /\A:(\w+)/
      key = $1.to_sym
      case key
        when :controller then ControllerSegment.new(key)
        else DynamicSegment.new key
      end
    when /\A\*(\w+)/ then PathSegment.new($1.to_sym, :optional => true)
    when /\A\?(.*?)\?/
      returning segment = StaticSegment.new($1) do
        segment.is_optional = true
      end
    when /\A(#{separator_pattern(:inverted)}+)/ then StaticSegment.new($1)
    when Regexp.new(separator_pattern) then
      returning segment = DividerSegment.new($&) do
        segment.is_optional = (optional_separators.include? $&)
      end
  end
  [segment, $~.post_match]
end