encoding_c is copyright 2015-2017 Mozilla Foundation.
Licensed under the Apache License, Version 2.0
<LICENSE-APACHE or
https://www.apache.org/licenses/LICENSE-2.0> or the MIT
license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
at your option. All files in the project carrying such
notice may not be copied, modified, or distributed except
according to those terms.