Skip to content

THIRD_PARTY_NOTICES.md

Latest commit

 

History

History
91 lines (77 loc) · 4.96 KB

THIRD_PARTY_NOTICES.md

File metadata and controls

91 lines (77 loc) · 4.96 KB
Raw

Third-Party Notices — .NET port

X-Ray.Content is licensed under MIT. The C# files listed below are derivative works of Apache-2.0 licensed Rust crates, translated to C#. They remain subject to the Apache License 2.0, a copy of which is in third_party/LICENSE-Apache-2.0.txt.

This is what Apache-2.0 §2 permits and §4 requires: the license text is included, each derived file carries a notice naming its source and stating that it was modified, and the upstream attribution is retained. None of the three crates ships a NOTICE file, so §4(d) does not apply.

Note for packagers. Every other Rust crate the .NET port derives from is MIT or dual MIT OR Apache-2.0 (where MIT can be taken), so the assembly was previously MIT throughout. These three are Apache-2.0 only, so plain MIT does not describe the whole assembly. The package therefore declares <PackageLicenseExpression>MIT AND Apache-2.0</PackageLicenseExpression> in src/XRay.Content/XRay.Content.csproj, which is what a consumer of XRay.Content on NuGet now sees. Both halves are satisfied by shipping the repository's MIT LICENSE and the Apache-2.0 text in third_party/; removing the last Apache-2.0-derived file is what would let the expression narrow back to MIT.

typst-syntax 0.15.1 — Apache-2.0

  • Copyright: The Typst Project Developers
  • Source: https://github.com/typst/typst
  • Derived files: src/XRay.Content/Internal/Math/TypstKind.cs, src/XRay.Content/Internal/Math/TypstLexer.cs, src/XRay.Content/Internal/Math/TypstNode.cs, src/XRay.Content/Internal/Math/TypstParser.cs, and the default_math_class overrides in src/XRay.Content/Internal/Math/TypstMathClass.cs (from typst-utils 0.15.1, also Apache-2.0 and also by The Typst Project Developers)
  • Modifications: the math-mode slice of the crate's lexer, syntax tree, and parser translated to C#. Markup mode, spans, the newline modes, incremental reparsing, memoization and diagnostics are omitted; only what parse_math reaches is ported. Code mode, which math enters at a #, is reduced to the shapes a # takes inside math — literals, names, field accesses, calls with named and spread arguments, bracketed groups, let bindings, set and show rules, and closures — with other keywords consumed rather than modelled. Validated at 486 of 487 trees identical to the crate's own parser over every $…$ span in the corpus, the last being a documentation placeholder that renders the same either way.

mathemascii 0.4.0 — Apache-2.0

  • Copyright: Nadir Fejzic
  • Source: https://github.com/nfejzic/mathemascii
  • Derived files: src/XRay.Content/Internal/Math/AsciiMathLexer.cs, src/XRay.Content/Internal/Math/AsciiMath.cs, src/XRay.Content/Internal/Math/AsciiMathSymbols.cs
  • Modifications: the scanner, lexer, parser, and AST translated to C#. The crate's panics on multi-byte input and on cancel are raised as an exception rather than aborting, so the caller can drop the equation instead of the process.

alemat 0.8.0 — Apache-2.0

  • Copyright: Nadir Fejzic
  • Source: https://github.com/nfejzic/alemat
  • Derived files: src/XRay.Content/Internal/Math/AsciiMath.cs (the MathML element tree and its writer), src/XRay.Content/Internal/Math/AsciiMathSymbols.cs (symbol values resolved through the crate's Ident/Operator dictionaries)
  • Modifications: only the element kinds mathemascii builds are ported, with the builder and writer behaviour of BufMathMlWriter reproduced; the crate's type-state builders, renderer trait, and unused elements are omitted.

Dependencies of the optional OCR pass — not derivative works

The sections above cover translated code. The OCR pass (see the deviation section of ../CLAUDE.md) instead takes a dependency on code it does not derive from, so nothing here is a derivative work — but it changes what the package carries, which the packagers' note above is about:

Package License Brings
PaddleOCR 26.8.4668 Apache-2.0 the recognizer; SkiaSharp (MIT) transitively
PaddleOCR.Pdf 26.8.4668 Apache-2.0 page rasterisation; PDFtoImage (MIT) and PDFium (Apache-2.0) transitively

Two consequences worth stating plainly. Native binaries now reach a consumer who restores the package — SkiaSharp's and PDFium's — which is the trade-off the ../CLAUDE.md deviation section records; the pass is off by default and neither is loaded until it is enabled. And these are two more Apache-2.0 components in a package declaring MIT, so the mismatch the note above describes now covers dependencies as well as derived files. That declaration is still left as it is, for the same reason.

Model weights are not redistributed: nothing in this repository or its package downloads or ships a checkpoint. OcrOptions.ModelDirectory names where one already is, so whoever stages it accepts its own license.