8 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).
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.
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 0.2.3 brings non-blocking I/O to the compression layer: async ZIP, async DEFLATE, and a new GZip module for Tokio/async-std pipelines, alongside a dedicated GIF LZW codec with LSB bitstream support. Plus across-the-board codec refinements. Pure Rust archive and compression — no C, no zlib, no libarchive.
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.
OxiArc 0.2.1 brings security and scale: traditional ZipCrypto encryption for password-protected ZIPs, plus async I/O, SIMD-accelerated CRC, and memory-mapped I/O in the core. Also LZ4 dictionary support and LZHUF streaming. Pure Rust archive and compression — no C, no zlib, no libarchive.
OxiArc 0.2.0 adds full LZW compression for TIFF and GIF — MSB/LSB bitstreams, variable bit widths — bringing the workspace to 10 pure-Rust crates. Now on crates.io, with a default test suite cut 76% faster (137s → 32s) and 427 passing tests. Pure Rust archive and compression with no C, no zlib, no libarchive.
The first real release of OxiArc: pure Rust archive and compression with 9 crates, 8 compression algorithms, and 10 container formats — ZIP, TAR, GZIP, LZH, XZ, 7z, CAB, LZ4, Zstd, Bzip2 — all reimplemented from scratch. No C, no zlib, no libarchive. ~19,600 lines, 371 tests, Rust 1.85+ / Edition 2024.