48 lines
1.1 KiB
Elixir
48 lines
1.1 KiB
Elixir
# 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(~c"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,
|
|
fetch_fun: fn _, _ -> raise "Resolving external entities not supported" end
|
|
)
|
|
|
|
{: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
|