news_parse_ex

xml.ex (1155B)

# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# Copyright © 2022 Haelwenn (lanodan) Monnier <contact+news_parse_ex@hacktivis.me>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule NewsParseEx.XML do
  require Logger
  def string_from_xpath(_, :error), do: nil
  def string_from_xpath(xpath, doc) do
    {:xmlObj, :string, res} = :xmerl_xpath.string('string(#{xpath})', doc)
    res =
      res
      |> to_string
      |> String.trim()
    {:ok, res}
  end
  def string_from_doc(doc) do
    :xmerl_xpath.string('//text()', doc)
    |> Enum.map(fn x ->
      {:xmlObj, :string, y} = :xmerl_xpath.string('string(.)', x)
      y
    end)
    |> Enum.join()
    |> String.trim()
  end
  def parse_document(text) do
    try do
      {doc, _rest} =
        text
        |> :binary.bin_to_list()
        |> :xmerl_scan.string(quiet: true)
      {: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