xml_builder.ex
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xml_builder.ex
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	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
	\|> Enum.join()
	end

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

	def to_doc(content), do: ~s(<?xml version="1.0" encoding="UTF-8"?>) <> to_xml(content)

	defp make_open_tag(tag, attributes) do
	attributes_string =
	for {attribute, value} <- attributes do
	value = String.replace(value, "\"", """)
	"#{attribute}=\"#{value}\""
	end
	\|> Enum.join(" ")

	[tag, attributes_string] \|> Enum.join(" ") \|> String.trim()
	end
	end