osobhandClaude Opus 5.5
e7a7951f1e
Blosc2 (32026) is out of reach for now: hdf5plugin's Blosc2 filter stores each HDF5 chunk as a Blosc2 super-chunk frame (msgpack header, a compressed chunk-offset index, trailer metalayers) and, for 2-D and larger chunks, as a B2ND array whose n-D blocks have to be reassembled - on top of the Blosc2 chunk format itself (extended header, filter pipeline, special-value chunks). ZFP (32013) is out of scope. Both keep failing with UnsupportedFilter, and the message now says what the ID is: "unsupported filter: 32026 (Blosc2, not implemented by clawhdf5)", or, for a filter this build left out, "... (Blosc; this build lacks the `blosc` feature)". filter_registry::known_filter exposes the table. tests/plugin_filters_interop.rs: hdf5plugin's Blosc2 and ZFP datasets read as an error naming the filter, never as data. 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