Combining Addressable::URIs

gistfile1.rb

require 'addressable/uri'

module CombineUri
  def combine(other_uri)
    dup.combine!(other_uri)
  end

  def combine!(other_uri)
    return self unless other_uri
    other_uri = self.class.parse(other_uri) unless self.class == other_uri.class
    overwrite_if_set(other_uri, :scheme)
    overwrite_if_set(other_uri, :host)
    overwrite_if_set(other_uri, :port)
    overwrite_if_set(other_uri, :fragment)
    merge_path(other_uri)
    merge_query_values(other_uri)
    self
  end

  private
  def overwrite_if_set(other_uri, method_name)
    value = other_uri.send(method_name)
    self.send(:"#{method_name}=", value) if value
  end

  def merge_path(other_uri)
    self.path = self.class.join(path, other_uri.path) if other_uri.path
  end

  def merge_query_values(other_uri)
    if query_values or other_uri.query_values
      self.query_values = (query_values || {}).merge(other_uri.query_values || {})
    end
  end
end

Addressable::URI.send :include, CombineUri