xml_builder.ex 1 KB
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defmodule Pleroma.XmlBuilder do
  def to_xml({tag, attributes, content}) do
    open_tag = make_open_tag(tag, attributes)

    content_xml = to_xml(content)

    "<#{open_tag}>#{content_xml}</#{tag}>"
  end

  def to_xml({tag, %{} = attributes}) do
    open_tag = make_open_tag(tag, attributes)

    "<#{open_tag} />"
  end

  def to_xml({tag, content}), do: to_xml({tag, %{}, content})

  def to_xml(content) when is_binary(content) do
    to_string(content)
  end

  def to_xml(content) when is_list(content) do
    for element <- content do
      to_xml(element)
    end
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    |> Enum.join()
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  end

  def to_xml(%NaiveDateTime{} = time) do
    NaiveDateTime.to_iso8601(time)
  end

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  def to_doc(content), do: ~s(<?xml version="1.0" encoding="UTF-8"?>) <> to_xml(content)
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  defp make_open_tag(tag, attributes) do
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    attributes_string =
      for {attribute, value} <- attributes do
        "#{attribute}=\"#{value}\""
      end
      |> Enum.join(" ")
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    [tag, attributes_string] |> Enum.join(" ") |> String.trim()
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  end
end