2 unstable releases
0.2.0 | Dec 29, 2020 |
---|---|
0.1.0 | Nov 23, 2015 |
#917 in Encoding
58KB
1K
SLoC
Nobility
Nobility is a Rust crate for encoding and decoding NBT, which is a format used by Minecraft: Java Edition.
Features:
- Decoder which creates few memory allocations
- Encoder that uses builders instead of heap allocated objects
- Supports TAG_Long_Array, added in Minecraft 1.12 (all tags as of 2020).
- Can encode and decode test files correctly (e.g. bigtest.nbt).
- Supports the Java variant of CESU-8 used for encoding text.
- Zero usage of
unsafe
.
This library is based on the spec at https://wiki.vg/NBT#Specification.
Missing features:
- Serde support. Ran into lifetime issues.
- CJSON support. Not yet implemented.
- Bedrock edition support. The format used there is different.
- Roundtrip encode/decode, as the encoder and decoder use different types.
Decoding
let mut file = File::open("hello_world.nbt")?;
let mut data = vec![];
file.read_to_end(&mut data)?;
let cursor = std::io::Cursor::new(data);
// Load the document. This step either copies the data (plaintext)
// or decompresses it (gzip).
let doc = Document::load(cursor)?;
// Parses the document. This returns the root tag's name, and the
// root tag (always a Compound tag). Both of these are borrowing the
// data inside the Document.
let (name, root) = doc.parse()?;
println!("name: {}", name.decode()?);
println!("{:#?}", root);
Encoding
let mut writer = NbtWriter::new();
let mut root = writer.root("hello world");
root.field("name").string("Bananrama");
// finish() call is required.
root.finish();
let result: Vec<u8> = writer.finish();
Dependencies
~690KB
~11K SLoC