class Bundler::Source::Rubygems

def normalize_uri(uri)
  uri = uri.to_s
  uri = "#{uri}/" unless %r{/$}.match?(uri)
  require_relative "../vendored_uri"
  uri = Bundler::URI(uri)
  raise ArgumentError, "The source must be an absolute URI. For example:\n" \
    "source 'https://rubygems.org'" if !uri.absolute? || (uri.is_a?(Bundler::URI::HTTP) && uri.host.nil?)
  uri
end