Nintendo BYML (binary YAML) library in Rust

A simple to use library for reading, writing, and converting Nintendo binary YAML (BYML) files in Rust. Supports BYML versions 2-4, (v2 used in The Legend of Zelda: Breath of the Wild). Can convert from BYML to readable, editable YAML and back.

Sample usage:

rust // First grab the file bytes. Yaz0 compressed files are automatically decompressed. let bytes: Vec<u8> = std::fs::read("ActorInfo.product.byml").unwrap(); // Parse the data as a Byml document let actor_info: Byml = Byml::from_binary(&bytes).unwrap(); // Index BYML hashes and arrays naturally let actor_list: &Vec<Byml> = actor_info["Actors"].as_array().unwrap(); // 7934 actors, egads! assert_eq!(actor_list.len(), 7934); // Hmm, we'll iterate the actors listed in this file: for actor in actor_list.iter() { // Print each actor's name println!("{}", actor["name"].as_string().unwrap()); } // Dump to YAML std::fs::write("ActorInfo.product.yml", actor_info.to_text().unwrap()).unwrap();

License Notice

This software contains heavily edited code from yaml-rust, mostly to simplify parsing and emitting BYML text representation. The original MIT/Apache license and code are available on the GitHub repo.