osobhandClaude Opus 5.5
17f09375ad
The reader now refuses a compound with a repeated field name or no fields and an enum member with an empty name, as libhdf5 does, but the writer still wrote them: CompoundTypeBuilder and EnumTypeBuilder build them without complaint, so clawhdf5 wrote files it could not read back. They were never valid HDF5; h5py refuses them. Datatype::check_encodable, which FileWriter::finish runs on every dataset and attribute type, now parses the type's own encoding back and refuses one the reader refuses, with the reader's reason. That keeps the writer in step with every reader check, not only these three. 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