osobhandClaude Opus 5.5
6dfd239011
hdf5plugin's BZip2 failed with UnsupportedFilter(307). The new `bzip2` feature decodes the single bzip2 stream H5Zbzip2.c stores, bounded by the chunk size (a truncated stream is an error, not short data), and encodes at block size cd_values[0] (DatasetBuilder::with_bzip2(level)). It uses the bzip2 crate's default backend, libbz2-rs-sys, a pure-Rust port of libbzip2: `cargo tree` shows no cc/cmake, and nothing is compiled from C. Interop: hdf5plugin writes block sizes 9, 1 and 5+shuffle over the 12-case matrix, read byte for byte; ours at 9 (shuffled) and 1 (not) reads back through hdf5plugin. Both fail with the decoder removed. 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