Struct FastCDC 

pub struct FastCDC { /* private fields */ }

A content-defined chunker that splits a byte stream at boundaries determined by the content itself.

Create via FastCDC::new or use the Default implementation (which uses the spec’s default sizes). Then call chunk_reader or chunk_slice to produce chunks.

Implementations

impl FastCDC

pub fn new( min_size: usize, avg_size: usize, max_size: usize, ) -> Result<Self, &'static str>

Construct a chunker with explicit size parameters.

Errors

Returns &str if the sizes are inconsistent:

• min_size == 0
• min_size >= avg_size
• avg_size >= max_size

pub const fn min_size(&self) -> usize

The minimum chunk size this chunker will produce.

pub const fn avg_size(&self) -> usize

The target average chunk size.

pub const fn max_size(&self) -> usize

The maximum chunk size this chunker will produce.

pub fn chunk_slice<'a>(&self, data: &'a [u8]) -> Vec<&'a [u8]>

Split data into content-defined chunks.

Returns a Vec of byte slices borrowing from data. The concatenation of the slices equals data. The last chunk may be smaller than min_size (if the input is short or the final chunk happens to be the tail after the last boundary).

pub fn chunk_reader<R: Read>(&self, reader: R) -> Result<Vec<Vec<u8>>>

Split a Read stream into content-defined chunks, returning each chunk as an owned Vec<u8>. Constant memory bounded by max_size plus one read buffer.

Errors

Returns the underlying std::io::Error if reader fails.

Trait Implementations

impl Chunker for FastCDC

fn chunk_slice<'a>(&self, data: &'a [u8]) -> Vec<&'a [u8]>

Split data into content-defined chunks. The concatenation of the returned slices equals data.

fn chunk_reader<R: Read>(&self, reader: R) -> Result<Vec<Vec<u8>>>

Split a Read stream into content-defined chunks, returning each chunk as an owned Vec<u8>. Constant memory bounded by the chunker’s max chunk size plus one read buffer.

fn avg_chunk_size(&self) -> usize

Target average chunk size.

impl Clone for FastCDC

fn clone(&self) -> FastCDC

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FastCDC

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

Formats the value using the given formatter.

impl Default for FastCDC

fn default() -> Self

Returns the “default value” for a type.