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Wechat API wrapper in Elixir.

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wechat lib wechat utils xml_parser.ex
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lib/wechat/utils/xml_parser.ex 

defmodule Wechat.Utils.XMLParser do

  @moduledoc """

  Parse XML message.

  """



  import Record, only: [defrecord: 2, extract: 2]



  defrecord :xmlElement, extract(:xmlElement, from_lib: "xmerl/include/xmerl.hrl")

  defrecord :xmlText, extract(:xmlText, from_lib: "xmerl/include/xmerl.hrl")



  def parse(xml) do

    {doc, _} = xml |> :binary.bin_to_list() |> :xmerl_scan.string()

    elements = :xmerl_xpath.string('/xml/*', doc)

    Enum.reduce(elements, %{}, &acc_element/2)

  end



  defp acc_element(element, acc) do

    element = xmlElement(element)

    key = element[:name]

    value = element[:content] |> value()

    Map.put(acc, key, value)

  end



  defp value([]), do: ""



  defp value([text]) do

    text

    |> xmlText()

    |> Keyword.get(:value)

    |> String.Chars.to_string()

  end

end