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# 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!
dst = Tempfile.new([File.basename(@file.path, '.*'), '.png'])
dst.binmode
begin
command = Terrapin::CommandLine.new('ffmpeg', '-i :source -loglevel :loglevel -y :destination', logger: Paperclip.logger)
command.run(source: @file.path, destination: dst.path, loglevel: 'fatal')
rescue Terrapin::ExitStatusError
dst.close(true)
return nil
rescue Terrapin::CommandNotFoundError
raise Paperclip::Errors::CommandNotFoundError, 'Could not run the `ffmpeg` command. Please install ffmpeg.'
end
dst
end
end
end
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