osobhandClaude Opus 5.5
92c8285549
Only leaves and the header were checked. Harmless while every lookup read the whole tree, but the indexed lookup prunes children by the keys stored in internal nodes, so one corrupted byte there could route a name to the wrong child and report it missing with no error. A BTIN whose lookup3 checksum does not match is now ChecksumMismatch on every read (lookups and full traversals), as in libhdf5. Test: one byte of the root BTIN of the 35 001-link h5py group's name index changed -> lookups, paths and listings through File, MmapFile and LazyFile all fail with ChecksumMismatch, and h5py refuses both. Before, lookups returned Ok. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
clawhdf5
Pure-Rust HDF5 reader/writer — no C dependencies.
Features
- Read and write HDF5 files entirely in Rust
- Memory-mapped I/O for large files (
mmapfeature, enabled by default) - Parallel chunk reads via Rayon (
parallelfeature) - Lazy dataset access for minimal memory usage
- h5py-compatible file output
Usage
use clawhdf5::File;
let file = File::open("data.h5").unwrap();
let dataset = file.dataset("/group/data").unwrap();
let values: Vec<f64> = dataset.read_1d().unwrap();
License
MIT