class Mixlib::Archive

def create(files = [], gzip: false)
  archiver.create(files, gzip: gzip)
end

def create_and_empty(destination)
  FileUtils.mkdir_p(destination)
  if @empty
    Dir.foreach(destination) do |entry|
      next if entry == "." || entry == ".."
      FileUtils.remove_entry_secure(File.join(destination, entry))
    end
  end
end

def extract(destination, perms: true, ignore: [])
  ignore = [/^\.$/, /\.{2}/] + Array(ignore)
  create_and_empty(destination)
  archiver.extract(destination, perms: perms, ignore: ignore)
end

def initialize(archive, empty: false)
  @empty = empty
  archive = File.expand_path(archive)
  begin
    # we prefer to use libarchive, which supports a great big pile o' stuff
    require "mixlib/archive/lib_archive"
    @archiver = Mixlib::Archive::LibArchive.new(archive)
  rescue LoadError
    # but if we can't use that, we'll fall back to ruby's native tar implementation
    @archiver = Mixlib::Archive::Tar.new(archive)
  end
end