mirror of
https://github.com/mastodon/mastodon.git
synced 2024-12-21 00:29:47 +00:00
55 lines
1.1 KiB
Ruby
55 lines
1.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'mime/types/columnar'
|
|
|
|
module Paperclip
|
|
class ImageExtractor < Paperclip::Processor
|
|
def make
|
|
return @file unless options[:style] == :original
|
|
|
|
image = extract_image_from_file!
|
|
|
|
unless image.nil?
|
|
begin
|
|
attachment.instance.thumbnail = image if image.size.positive?
|
|
ensure
|
|
# Paperclip does not automatically delete the source file of
|
|
# a new attachment while working on copies of it, so we need
|
|
# to make sure it's cleaned up
|
|
|
|
begin
|
|
image.close(true)
|
|
rescue Errno::ENOENT
|
|
nil
|
|
end
|
|
end
|
|
end
|
|
|
|
@file
|
|
end
|
|
|
|
private
|
|
|
|
def extract_image_from_file!
|
|
::Av.logger = Paperclip.logger
|
|
|
|
cli = ::Av.cli
|
|
dst = Tempfile.new([File.basename(@file.path, '.*'), '.png'])
|
|
dst.binmode
|
|
|
|
cli.add_source(@file.path)
|
|
cli.add_destination(dst.path)
|
|
cli.add_output_param loglevel: 'fatal'
|
|
|
|
begin
|
|
cli.run
|
|
rescue Cocaine::ExitStatusError, ::Av::CommandError
|
|
dst.close(true)
|
|
return nil
|
|
end
|
|
|
|
dst
|
|
end
|
|
end
|
|
end
|