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
46
47
48
|
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Upload.Filter.Mogrify do
@behaviour Pleroma.Upload.Filter
@type conversion :: action :: String.t() | {action :: String.t(), opts :: String.t()}
@type conversions :: conversion() | [conversion()]
@spec filter(Pleroma.Upload.t()) :: {:ok, :atom} | {:error, String.t()}
def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
try do
do_filter(file, Pleroma.Config.get!([__MODULE__, :args]))
{:ok, :filtered}
rescue
_e in ErlangError ->
{:error, "mogrify command not found"}
end
end
def filter(_), do: {:ok, :noop}
def do_filter(file, filters) do
file
|> Mogrify.open()
|> mogrify_filter(filters)
|> Mogrify.save(in_place: true)
end
defp mogrify_filter(mogrify, nil), do: mogrify
defp mogrify_filter(mogrify, [filter | rest]) do
mogrify
|> mogrify_filter(filter)
|> mogrify_filter(rest)
end
defp mogrify_filter(mogrify, []), do: mogrify
defp mogrify_filter(mogrify, {action, options}) do
Mogrify.custom(mogrify, action, options)
end
defp mogrify_filter(mogrify, action) when is_binary(action) do
Mogrify.custom(mogrify, action)
end
end
|
