osobhandClaude Opus 5.5
a0160730f2
FractalHeapHeader::parse_in reads the header as one window (a second, longer one when it holds an I/O filter pipeline); read_managed_object_in reads direct blocks, indirect blocks (one window up to the last child entry) and huge objects with bounded reads. The &[u8] methods are wrappers. A huge object indexed by the huge-object v2 B-tree, which is not converted yet, is a clean ContiguousStorageRequired error on a backend without the whole file in memory (after the "no index" check, so the error order is unchanged). storage::Window (crate-internal) reads a window of a structure and reports bounds failures exactly as the whole-file ensure_len did, and a short read inside the file is now a Storage error rather than an EOF. New tests: headers (with and without a filter pipeline) cut at every length, and managed objects in a direct root and through an indirect root, huge objects with direct IDs and tiny objects, give identical results through a read_at-only CountingStorage. 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