gram: legal

> ./congress_xml.livemd

# Congress.gov processing

```elixir
Mix.install([
  {:saxy, "~> 1.6"},
  # {:yaml_elixir, "~> 2.12"},
  {:ymlr, "~> 5.0"},
  # {:matcha, "0.1.1"},
])

Section

{:ok, legis} = File.read("./legis.xml")

{:ok, response} = Saxy.SimpleForm.parse_string(legis)
# response |> Ymlr.Encode.to_s(legis) |> IO.puts

defmodule Legis do
  @behaviour Saxy.Handler

  def handle_event(:start_document, prolog, state) do
    IO.inspect("Start parsing document")
    {:ok, state}
  end

  def handle_event(:end_document, _data, state) do
    IO.inspect("Finish parsing document")
    {:ok, state}
  end

  def handle_event(:start_element, {"external-xref", attributes}, state) do
    # IO.inspect("Start parsing element #{name} with attributes #{inspect(attributes)}")
    {:ok, [{:ref, attributes} | state]}
  end
  def handle_event(:start_element, {name, attributes}, state) do
    IO.inspect("Start parsing element #{name} with attributes #{inspect(attributes)}")
    {:ok, state}
  end

  def handle_event(:end_element, name, state) do
    IO.inspect("Finish parsing element #{name}")
    {:ok, state}
  end

  def handle_event(:characters, chars, state) do
    IO.inspect("Receive characters #{chars}")
    {:ok, state}
  end

  def handle_event(:cdata, cdata, state) do
    IO.inspect("Receive CData #{cdata}")
    {:ok, state}
  end
end

Saxy.parse_string(legis, Legis, [])