class Aws::Signers::S3

def uri_escape(s)
  #URI.escape(s)
  # URI.escape is deprecated, replacing it with escape from webrick
  # to squelch the massive number of warnings generated from Ruby.
  # The following script was used to determine the differences
  # between the various escape methods available. The webrick
  # escape only had two differences and it is available in the
  # standard lib.
  #
  #     (0..255).each {|c|
  #       s = [c].pack("C")
  #       e = [
  #         CGI.escape(s),
  #         ERB::Util.url_encode(s),
  #         URI.encode_www_form_component(s),
  #         WEBrick::HTTPUtils.escape_form(s),
  #         WEBrick::HTTPUtils.escape(s),
  #         URI.escape(s),
  #       ]
  #       next if e.uniq.length == 1
  #       puts("%5s %5s %5s %5s %5s %5s %5s" % ([s.inspect] + e))
  #     }
  #
  WEBrick::HTTPUtils.escape(s).gsub('%5B', '[').gsub('%5D', ']')
end