64 lines
4.4 KiB
Markdown
64 lines
4.4 KiB
Markdown
# Format support
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## Version 0.1.0 support matrix
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| Input or feature | Status | Tested evidence and boundary |
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| ---------------------------------- | ---------------------- | ------------------------------------------------------------------------------------------------- |
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| Desktop revision-store `.one` | Supported subset | Real 34,904-byte Joplin golden; three pages |
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| FSSHTTP-packaged `.one` | Unsupported | Header is detected and rejected with a controlled diagnostic |
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| Unknown/legacy `.one` variants | Unsupported | File type and format GUIDs are validated before traversal |
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| `.onepkg`, single CAB, LZX | Supported subset | Real Joplin package: LZX `0x1203`, three CFDATA blocks, seven entries, five sections, seven pages |
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| CAB LZX `0x1303` | Supported extraction | Byte-for-byte rust-cab MIT unit fixture, two text entries |
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| CAB without compression | Supported extraction | Byte-for-byte rust-cab MIT unit fixture |
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| CAB MSZIP | Supported extraction | rust-cab single-block fixture plus a generated two-block dictionary-chain fixture |
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| CAB Quantum | Unsupported | Metadata is recognized; extraction fails with `cab-compression-unsupported` |
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| Multi-cabinet CAB / spanning files | Unsupported | Header flags and spanning folder indexes are rejected |
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| `.onetoc2` package entries | Listed only | Files are identified, but notebook hierarchy and section order are not interpreted |
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| Standalone `.onetoc2` | Unsupported in the app | The picker accepts only `.one` and `.onepkg` |
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“Supported subset” is intentionally narrower than “all files with this
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extension.” A successful open requires the tested desktop OneStore structures
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and content graph nodes. Malformed offsets, counts, references, CAB checksums,
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paths, compressed data, and unsupported variants produce bounded diagnostics or
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a controlled failure.
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The default LZX limit accepts CAB window sizes through 8 MiB, but compatibility
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claims are fixture-backed only for window bits 18 (`0x1203`) and 19 (`0x1303`).
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MSZIP validates the `CK` prefix, limits each compressed block to 32 KiB + 12,
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decodes into a fixed-size output buffer, requires the declared output length,
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and carries at most 32 KiB of history between blocks in one folder. The MSZIP
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tests establish CAB extraction behavior; no redistributable MSZIP-compressed
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OneNote export is currently present, so they do not establish producer-specific
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`.onepkg` compatibility.
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Trailing CAB data is ignored with a warning. Reserved CAB areas are bounded and
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skipped. CAB names are decoded as strict UTF-8; unmarked valid UTF-8 receives a
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warning, while invalid non-ASCII legacy-code-page names are rejected rather
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than guessed.
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## Extracted OneNote data
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The desktop section path currently returns:
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- section display name;
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- page ID, title, created/updated timestamp when available, and page level;
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- visible Unicode/extended-ASCII rich text as plain text and a text preview;
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- diagnostics tied to an offset, structure, or page where available.
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It does not preserve visual position, rich-text formatting, list formatting,
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tables, images, ink, equations, embedded files, audio/video, active links,
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page versions/conflicts, or exports. Unsupported content objects remain visible
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as diagnostics instead of being silently presented as parsed.
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Within a supported `.onepkg`, each `.one` entry is parsed independently.
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Malformed or unsupported sections are marked failed/unsupported while other
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sections remain available. Package navigation is temporary normalized-path
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order until `.onetoc2` interpretation is implemented.
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## Test fixtures
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The exact hashes, source revisions, licences, expected page names, and CAB
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structures are recorded in
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[`tests/fixtures/README.md`](../tests/fixtures/README.md). Tests use no private
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notebooks and do not treat a synthetic archive as proof of Microsoft OneNote
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export compatibility.
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