qbsdiff

Fast and memory saving bsdiff 4.x compatible delta compressor and patcher.

Add dependency to Cargo.toml under your project: toml [dependencies] qbsdiff = "0.1"

Build commands

The commands qbsdiff and qbspatch could be compiled with: shell $ cargo build --release --bins --features cmd $ target/release/qbsdiff -h $ target/release/qbspatch -h

Examples

Apply patch to source and produce the target data: ```rust use std::io; use qbsdiff::Bspatch;

fn bspatch(source: &[u8], patch: &[u8]) -> io::Result> { let patcher = Bspatch::new(patch)?; let mut target = Vec::new(); // More complicated: Vec::withcapacity(patcher.hinttarget_size() as usize); patcher.apply(source, io::Cursor::new(&mut target))?; Ok(target) } ```

Compare source with target then generate patch: ```rust use std::io; use qbsdiff::Bsdiff;

fn bsdiff(source: &[u8], target: &[u8]) -> io::Result> { let mut patch = Vec::new(); Bsdiff::new(source) .compare(target, io::Cursor::new(&mut patch))?; Ok(patch) } ```

Note that qbsdiff would not generate exactly the same patch file as bsdiff. Only the patch file format is promised to be compatible.