3 posts
12 archive formats and 10 compression algorithms implemented from scratch in pure Rust. DEFLATE up to 400 MB/s, SIMD-accelerated CRC (3–4.5× faster), full async streaming, Brotli + Snappy support, LZH (Japanese legacy) full support. ~47k SLoC, 12 crates, 1,041 tests. The sovereign data packaging layer for SciRS2 and the entire COOLJAPAN ecosystem (now 21M+ SLoC total).
10 archive formats and 8 compression algorithms implemented from scratch in pure Rust. DEFLATE up to 400 MB/s, SIMD-accelerated CRC (3–4.5× faster), full async support, LZH (Japanese legacy) support, ZIP/TAR/GZIP/Zstd/LZ4/XZ and more. The sovereign data packaging layer for SciRS2 and the entire COOLJAPAN ecosystem.
OxiArc 0.2.2 ships a complete Zstandard encoder built from scratch — FSE, canonical Huffman, and an LZ77 match finder with 22 levels — so the workspace now writes real .zst, not just reads it. Plus an n-gram Zstd dictionary trainer, LZ4 dictionary frames, and richer ZIP64 with AES-256 and ZipCrypto. Pure Rust archive and compression, no C, no zlib, no libzstd.