debianize-mobilizon/lib/federation/web_finger/xml_builder.ex

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# Portions of this file are derived from Pleroma:
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
# SPDX-License-Identifier: AGPL-3.0-only
# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/xml_builder.ex
defmodule Mobilizon.Federation.WebFinger.XmlBuilder do
@moduledoc """
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Builds XRD for WebFinger host_meta.
"""
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})
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def to_xml(content) when is_binary(content), do: to_string(content)
def to_xml(content) when is_list(content) do
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content
|> Enum.map(&to_xml/1)
|> Enum.join()
end
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def to_xml(%NaiveDateTime{} = time), do: NaiveDateTime.to_iso8601(time)
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 =
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attributes
|> Enum.map(fn {attribute, value} -> "#{attribute}=\"#{value}\"" end)
|> Enum.join(" ")
[tag, attributes_string] |> Enum.join(" ") |> String.trim()
end
end