Enum byml::Byml

pub enum Byml {
    Null,
    String(String),
    Binary(Vec<u8>),
    Array(Vec<Byml>),
    Hash(BTreeMap<String, Byml>),
    Bool(bool),
    Int(i32),
    Float(Float),
    UInt(u32),
    Int64(i64),
    UInt64(u64),
    Double(Double),
}

Represents a Nintendo binary YAML (BYML) document or node. A Byml will usually be constructed from binary data or a YAML string, e.g.

let buf: Vec<u8> = std::fs::read("A-1_Static.smubin")?;
let map_unit = Byml::from_binary(&buf)?;
let text: String = std::fs::read_to_string("A-1_Static.yml")?;
let map_unit2 = Byml::from_text(&text)?;
assert_eq!(map_unit, map_unit2);

You can also easily serialize to binary or a YAML string.

let buf: Vec<u8> = std::fs::read("A-1_Static.smubin")?;
let map_unit = Byml::from_binary(&buf)?;
std::fs::write("A-1_Static.yml", &map_unit.to_text()?)?;
std::fs::write("A-1_Static.copy.mubin", &map_unit.to_binary(Endian::Big, 2)?)?;

A number of convenience getters are available which return a result for a variant value:

let doc = Byml::from_binary(&some_data)?;
let hash: &BTreeMap<String, Byml> = doc.as_hash()?;

Most of the node types are fairly self-explanatory. Arrays are implemented as Vec<Byml>, and hash nodes as BTreeMap<String, Byml>. Floats (f32) and doubles (f64) use wrapper types that support Eq. These can be converted with into(). You can also query the node type with get_type().

For convenience, a Byml known to be an array or hash node can be indexed. Panics if the node has the wrong type or if the index is not found.

let buf: Vec<u8> = std::fs::read("ActorInfo.product.sbyml")?;
let actor_info = Byml::from_binary(&buf)?;
assert_eq!(actor_info["Actors"].as_array()?.len(), 7934);
assert_eq!(actor_info["Hashes"][0].as_int()?, 31119);

Variants

Null

String(String)

Binary(Vec<u8>)

Array(Vec<Byml>)

Hash(BTreeMap<String, Byml>)

Bool(bool)

Int(i32)

Float(Float)

UInt(u32)

Int64(i64)

UInt64(u64)

Double(Double)

Implementations

impl Byml

pub fn from_binary<B: AsRef<[u8]>>(data: &B) -> Result<Byml, Box<dyn Error>>

pub fn read_binary<R: Read + Seek>(
    reader: &mut R
) -> Result<Byml, Box<dyn Error>>

impl Byml

pub fn to_binary(
    &self,
    endian: Endian,
    version: u16
) -> Result<Vec<u8>, WriteError>

Serialize the document to binary data with the specified endianness and version. Only hash, array, or null nodes can be used.

pub fn to_compressed_binary(
    &self,
    endian: Endian,
    version: u16
) -> Result<Vec<u8>, WriteError>

Serialize the document to binary data with the specified endianness and version and yaz0 compress it. Only hash, array, or null nodes can be used.

pub fn write_binary<W: Write + Seek>(
    &self,
    writer: &mut W,
    endian: Endian,
    version: u16
) -> Result<(), WriteError>

Write the binary serialized BYML document to a writer with the specified endianness and version. Only hash, array, or null nodes can be used.

impl Byml

pub fn to_text(&self) -> Result<String, Box<dyn Error>>

Serialize the document to a YAML string. The YAML output is fully compatible with the oead and byml Python libraries.

impl Byml

pub fn from_text(text: &str) -> Result<Byml, Box<dyn Error>>

Read a BYML document from a YAML string. The input YAML format is the same as that used by the byml and oead Python libraries.

impl Byml

pub fn is_container(&self) -> bool

Returns whether the node is an array or hash

pub fn is_value(&self) -> bool

Returns whether the node is an inline value (Int, UInt, Float, or Bool)

pub fn is_string(&self) -> bool

Do I even need to document this one?

pub fn get_type(&self) -> NodeType

Gets the node type

pub fn as_hash(&self) -> Result<&BTreeMap<String, Byml>, TypeError>

Returns a result with a reference to the inner BYML hash or a type error

pub fn as_array(&self) -> Result<&Vec<Byml>, TypeError>

Returns a result with a reference to the inner BYML array or a type error

pub fn as_binary(&self) -> Result<&Vec<u8>, TypeError>

Returns a result with a reference to the inner BYML binary data or a type error

pub fn as_bool(&self) -> Result<bool, TypeError>

Returns a result with the inner boolean value or a type error

pub fn as_string(&self) -> Result<&String, TypeError>

Returns a result with a reference to the inner string or a type error

pub fn as_int(&self) -> Result<i32, TypeError>

Returns a result with the inner i32 value or a type error

pub fn as_int64(&self) -> Result<i64, TypeError>

Returns a result with the inner i64 value or a type error

pub fn as_uint(&self) -> Result<u32, TypeError>

Returns a result with the inner u32 value or a type error

pub fn as_uint64(&self) -> Result<u64, TypeError>

Returns a result with the inner u64 value or a type error

pub fn as_float(&self) -> Result<f32, TypeError>

Returns a result with the inner f32 value or a type error

pub fn as_double(&self) -> Result<f64, TypeError>

Returns a result with the inner f64 value or a type error

pub fn as_mut_hash(&mut self) -> Result<&mut BTreeMap<String, Byml>, TypeError>

Returns a result with a mutable reference to the inner BYML hash or a type error

pub fn as_mut_array(&mut self) -> Result<&mut Vec<Byml>, TypeError>

Returns a result with a mutable reference to the inner BYML array or a type error

pub fn as_mut_binary(&mut self) -> Result<&mut Vec<u8>, TypeError>

Returns a result with a mutable reference to the inner binary data or a type error

pub fn as_mut_string(&mut self) -> Result<&mut String, TypeError>

Returns a result with a mutable reference to the inner string or a type error

pub fn as_mut_int(&mut self) -> Result<&mut i32, TypeError>

Returns a result with a mutable reference to the inner i32 or a type error

pub fn as_mut_int64(&mut self) -> Result<&mut i64, TypeError>

Returns a result with a mutable reference to the inner i64 or a type error

pub fn as_mut_uint(&mut self) -> Result<&mut u32, TypeError>

Returns a result with a mutable reference to the inner u32 or a type error

pub fn as_mut_uint64(&mut self) -> Result<&mut u64, TypeError>

Returns a result with a mutable reference to the inner u64 or a type error

pub fn is_null(&self) -> bool

Checks if the node is a null value

Trait Implementations

impl Clone for Byml

fn clone(&self) -> Byml

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Byml

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Byml

fn default() -> Self

Returns the "default value" for a type.

impl Eq for Byml

impl Hash for Byml

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'a, I> Index<I> for Byml where
    I: Into<BymlIndex<'a>>, 

type Output = Byml

The returned type after indexing.

fn index(&self, index: I) -> &Self::Output

Performs the indexing (container[index]) operation.

impl PartialEq<Byml> for Byml

fn eq(&self, other: &Byml) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl StructuralEq for Byml