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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.Web.XML do
	require Logger

	def string_from_xpath(_, :error), do: nil

	def string_from_xpath(xpath, doc) do
	try do
	{:xmlObj, :string, res} = :xmerl_xpath.string('string(#{xpath})', doc)

	res =
	res
	\|> to_string
	\|> String.trim()

	if res == "", do: nil, else: res
	catch
	_e ->
	Logger.debug("Couldn't find xpath #{xpath} in XML doc")
	nil
	end
	end

	def parse_document(text) do
	try do
	{doc, _rest} =
	text
	\|> :binary.bin_to_list()
	\|> :xmerl_scan.string(
	quiet: true,
	allow_entities: false
	)

	{:ok, doc}
	rescue
	_e ->
	Logger.debug("Couldn't parse XML: #{inspect(text)}")
	:error
	catch
	:exit, _error ->
	Logger.debug("Couldn't parse XML: #{inspect(text)}")
	:error
	end
	end
	end