summaryrefslogtreecommitdiff
path: root/lib/pleroma/web/xml.ex
blob: 2b34611ace22f9dd6c03a2f65f13b845255800aa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 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)

      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