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/*! Fast and memory saving bsdiff 4.x compatible delta compressor and patcher. Add dependency to `Cargo.toml`: ```toml [dependencies] qbsdiff = "1.3" ``` Build commands -------------- Build `qbsdiff` and `qbspatch` commands: ```shell $ cargo build --release --bins --features cmd $ cd target/release $ ./qbsdiff --help $ ./qbspatch --help ``` Install commands to `$CARGO_HOME/bin`: ```shell $ cargo install qbsdiff --features cmd ``` Examples -------- Produce the target stream by applying `patch` to `source`: ```rust use std::io; use qbsdiff::Bspatch; fn bspatch(source: &[u8], patch: &[u8]) -> io::Result<Vec<u8>> { let patcher = Bspatch::new(patch)?; let mut target = Vec::new(); // To preallocate target: //Vec::with_capacity(patcher.hint_target_size() as usize); patcher.apply(source, io::Cursor::new(&mut target))?; Ok(target) } ``` Produce the patch data by comparing `source` with `target`: ```rust use std::io; use qbsdiff::Bsdiff; fn bsdiff(source: &[u8], target: &[u8]) -> io::Result<Vec<u8>> { let mut patch = Vec::new(); Bsdiff::new(source, target) .compare(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. */ #![forbid(unsafe_code)] pub mod bsdiff; pub mod bspatch; mod utils; pub use bsdiff::{Bsdiff, Compression, ParallelScheme}; pub use bspatch::Bspatch;