osobhandClaude Opus 5.5
d54a0f4737
attrs() read every attribute of an object through extract_attributes_full, so one attribute it could not read (a corrupt or unsupported attribute message, or a heap object it could not locate) failed all of them — the same shape as the huge-object bug, where one 8 KiB attribute hid every attribute on a NetCDF file's root group. - clawhdf5-format: new attribute::extract_attributes_tolerant returns the attributes it could read plus one error per attribute it could not. Errors in the attribute index itself (Attribute Info message, dense heap header, B-tree) still fail, since then it is unknown which attributes exist. extract_attributes_full is unchanged (strict); both share one implementation. - clawhdf5: attrs() on Group/Dataset, MmapGroup/MmapDataset and LazyGroup/LazyDataset leaves an unreadable attribute out (documented), and the new attrs_with_errors() returns the map with the per-attribute errors. A value is either returned complete or not at all. Regression test: one_unreadable_attribute_does_not_hide_the_others (h5py writes 11 dense attributes; one message's version byte is corrupted; before: attrs() failed with InvalidAttributeVersion(127), after: the 10 others come back with their values and one error is reported). 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