rollsum is based on bupsplit, which in turn is based on rsync chunking.
Interface liable to change.
https://docs.rs/rollsum
``` extern crate rollsum;
use std::env; use std::fs; use std::path::Path; use std::io::prelude::*;
pub fn main () { let args: Vec<_> = env::args().collect(); let mut file = fs::File::open(&Path::new(&args[1])).unwrap(); let mut buf = vec![]; file.readtoend(&mut buf).unwrap();
let mut ofs: usize = 0;
while ofs < buf.len() {
let mut b = rollsum::Bup::new();
if let Some(count) = b.find_chunk_edge(&buf[ofs..]) {
ofs += count;
println!("found edge at {}", ofs);
} else {
println!("end of the line!");
break
}
}
} ```