Orz
orz -- a general purpose data compressor written in rust.
orz is an optimized ROLZ (reduced offset Lempel-Ziv) general purpose data compressor. input data is encoded as ROLZ-matches (reduced-offsets and match lengths), 2-byte words, and single bytes. then all encoded symbols is processed with a Move-to-Front transformer and a static huffman coder.
benefited from the ROLZ algorithm, orz compresses times faster than many other LZ-based compressors which has same compression ratio, and decompression speed is still very acceptable.
orz is completely implemented in rust. clone the repo and run cargo build --release to have an executable orz binary.
installation
you can install orz with cargo:
cargo install --git https://github.com/richox/orz --tag v1.6.1
usage
for compression:
orz encode <source-file-input> <compressed-file-output>
for decompression:
orz decode <compressed-file-input> <source-file-output>
for more details, see orz --help
benchmarks
benchmark for 100MB of Large Text Compression Benchmark (enwik8, see http://mattmahoney.net/dc/text.html):, name, compressed size, encode time, decode time, -----------, ---------------, -----------, -----------, xz -6, 26,375,764, 100.013s, 2.236s, zstd -19, 26,960,368, 97.262s, 0.355s, orz -l3, 27,085,621, 10.861s, 1.898s, orz -l2, 27,219,380, 9.684s, 1.856s, orz -l1, 27,471,492, 8.505s, 1.828s, orz -l0, 27,881,226, 7.222s, 1.821s, bzip2 -9, 29,008,758, 11.253s, 5.975s, zstd -15, 29,543,910, 46.876s, 0.254s, brotli -9, 29,685,672, 55.985s, 0.465s, brotli -8, 30,326,580, 30.885s, 0.440s, zstd -11, 31,011,103, 17.575s, 0.215s, brotli -7, 31,057,759, 17.642s, 0.422s, lzfse, 36,157,828, 2.902s, 0.252s, gzip -6, 36,518,322, 6.454s, 0.984s