class Excon::PrettyPrinter

def self.pp(io, datum, indent=0)
  datum = datum.dup
  # reduce duplication/noise of output
  unless datum.is_a?(Excon::Headers)
    datum.delete(:connection)
    datum.delete(:stack)
    datum = Utils.redact(datum)
  end
  indent += 2
  max_key_length = datum.keys.map {|key| key.inspect.length}.max
  datum.keys.sort_by {|key| key.to_s}.each do |key|
    value = datum[key]
    io.write("#{' ' * indent}#{key.inspect.ljust(max_key_length)} => ")
    case value
    when Array
      io.puts("[")
      value.each do |v|
        io.puts("#{' ' * indent}  #{v.inspect}")
      end
      io.write("#{' ' * indent}]")
    when Hash
      io.puts("{")
      self.pp(io, value, indent)
      io.write("#{' ' * indent}}")
    else
      io.write("#{value.inspect}")
    end
    io.puts
  end
  indent -= 2
end