Files

T

osobhandClaude Opus 5.5 a59d83d47d test: compare header and datatype damage with what h5py refuses

h5py writes a dataset (libver earliest, so version-1 object headers) and
the script damages one field of a copy: a layout message flagged
shareable, a message size that is not a multiple of 8, a compound field
that repeats an earlier name or overlaps it, an empty enum member name, a
float exponent overlapping the mantissa. h5py refuses every damaged copy,
and clawhdf5 must refuse exactly those and read the valid files. All of
them but the unaligned one (then an UnexpectedEof) read before this
branch. The helper now reads any datatype
(File::read_multi) rather than only integers.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

2026-09-26 00:35:41 -05:00

benches

Merge pull request 'docs(clawhdf5): document DType variants, fix unresolved doc links' (#17 ) from sdlc-docs/clawhdf5-types-20260514-165210 into main

2026-05-14 23:54:48 +00:00

src

fix: refuse truncated files and read nothing past the recorded end of file

2026-09-26 00:30:40 -05:00

tests

test: compare header and datatype damage with what h5py refuses

2026-09-26 00:35:41 -05:00

Cargo.toml

build: declare Rust 1.92 as the MSRV and check it in CI

2026-09-23 11:05:26 -05:00

README.md

docs: fix stale package names, counts, and CLI subcommands

2026-06-03 11:17:04 +00:00

README.md

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 (mmap feature, enabled by default)
Parallel chunk reads via Rayon (parallel feature)
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