CHANGELOG (Unreleased): LZF, bitshuffle, bzip2 and Blosc read and write in pure Rust, their features, the ChunkOptions::plugin field (breaking for struct-literal construction), the filter registry, the named UnsupportedFilter message, and Blosc2/ZFP still unimplemented. README: the clawhdf5-format feature table gains lzf (default), bitshuffle, bzip2, blosc and plugin-filters, with how to write them and what is not implemented; no speed claims. docs/known-issues.md: the audit's filter gap is marked fixed 2026-09-26 for LZF/bitshuffle/bzip2/Blosc, Blosc2 and ZFP still open. CLAUDE.md: the clawhdf5-filters row no longer says "No Blosc". clawhdf5-format's crate docs list the new features. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
clawhdf5-format
Pure-Rust HDF5 binary format parsing and writing — no C dependencies.
Features
- Zero-copy superblock, object header, and B-tree parsing
- Chunked dataset read/write with filter pipelines
no_stdsupport (disablestdfeature)- Optional parallel reads via Rayon
- SHA-256 provenance tracking
Usage
use clawhdf5_format::Superblock;
let data = std::fs::read("data.h5").unwrap();
let sb = Superblock::from_bytes(&data).unwrap();
println!("HDF5 version {}.{}", sb.version_major(), sb.version_minor());
License
MIT