Struct Dictionary 

pub struct Dictionary { /* private fields */ }

A pre-trained zstd dictionary for improved compression of small data.

Load from raw bytes with Dictionary::from_bytes, or train with [train_dict_fastcover] (requires dict_builder feature).

Implementations

impl Dictionary

pub fn from_bytes(data: &[u8]) -> Result<Self, DecompressError>

Parses a dictionary from its raw byte representation.

pub fn id(&self) -> u32

Returns the dictionary ID embedded in the header.

pub fn content(&self) -> &[u8]

Returns the raw content segment used as match-finding history prefix.

pub fn rep_offsets(&self) -> &[u32; 3]

Returns the three initial repeat offsets stored in the dictionary.

pub fn huf_table(&self) -> Option<(&[HuffmanDecodeEntry], u8)>

Returns the Huffman decode table and its log2 size, if present.

pub fn of_table(&self) -> Option<(&[FseDecodeEntry], u8)>

Returns the offset-code FSE decode table and accuracy log, if present.

pub fn ml_table(&self) -> Option<(&[FseDecodeEntry], u8)>

Returns the match-length FSE decode table and accuracy log, if present.

pub fn ll_table(&self) -> Option<(&[FseDecodeEntry], u8)>

Returns the literal-length FSE decode table and accuracy log, if present.

Trait Implementations

impl Clone for Dictionary

fn clone(&self) -> Dictionary

Returns a duplicate of the value.

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

Performs copy-assignment from source.