Trait rollsum::Engine [−] [src]

pub trait Engine {
    type Digest;
    fn roll_byte(&mut self, byte: u8);
    fn digest(&self) -> Self::Digest;

    fn roll(&mut self, buf: &[u8]) { ... }
    fn find_chunk_edge_cond<F>(&mut self, buf: &[u8], cond: F) -> Option<usize> where F: Fn(&Self) -> bool { ... }
}

Rolling sum engine trait

Associated Types

type Digest

Required Methods

fn roll_byte(&mut self, byte: u8)

Roll over one byte

fn digest(&self) -> Self::Digest

Return current rolling sum digest

Provided Methods

fn roll(&mut self, buf: &[u8])

Roll over a slice of bytes

fn find_chunk_edge_cond<F>(&mut self, buf: &[u8], cond: F) -> Option<usize> where F: Fn(&Self) -> bool

Find the end of the chunk.

Feed engine bytes from buf and stop when chunk split was found.

Use cond function as chunk split condition.

Return: None - no chunk split was found Some(offset) - offset of the first unconsumed byte of buf. offset == buf.len() if the chunk ended right after whole buf.

Implementors