3 posts
The 0.3 line of Pure Rust archive and compression: a Zopfli-style optimal DEFLATE parser, an LZMA BT4 match finder that delivers SDK-grade level-9 quality, true bounded-memory LZ4 streaming, parallel Snappy, optimal LZSS for LZH, and memory-mapped archive access. ~71k SLoC across 227 files, 1,640 tests, 13 crates. API-stable as of v0.3.0.
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).
OxiArc 0.2.5 adds two brand-new compression crates — Brotli (RFC 7932, quality 0-11) and Snappy (block + framed with CRC32C) — bringing the workspace to 12 crates and 12 container formats. Plus DEFLATE/GZip/Zlib streaming with flush modes, LZW streaming, and an EntryBuilder fluent API. 1,038 tests, all passing. Pure Rust archive and compression — no C, no zlib, no libarchive.