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Dylan M. Taylor e3e31693c7 Add craft-docx: WordCraft's DOCX reader and writer on craft-wordmodel, craft-opc and craft-xml (#1015)
* Add craft-wordmodel: WordCraft's document model without its editing code

WordCraft's crates/doc (wordcraft-doc, at 07f97737) moved as it is, so the DOCX,
RTF, ODT and other text-format crates can read into and write from one model.
Module paths, type names and serde attributes are unchanged: an app that
re-exports the crate keeps its native file format.

Left in the app: range editing (edit.rs), IME text and equation editing. Not
model, and already in craft-libs: code pages (craft-rtf), the ZIP entry-count
check (craft-opc), the compound-file guard (craft-cfb). The paragraph walks
moved to walk.rs and the unit helpers of wordcraft-geom to geom.rs.

* craft-wordmodel: math_tree, the arguments of an equation node and a walk over its runs

The DOCX reader and writer walk an equation's runs. The walk and the child
accessors it uses were in WordCraft's equation editor (math_edit.rs), which
stays in the app; they are structure, not editing.

* craft-wordmodel: keep the document operations (edit.rs) with the model

The DOCX and RTF readers use them: alternative-format chunks are merged into
a document with adopt_blocks, and a reader formats ranges with format_range
and inserts objects. They operate on the document, not on a view, so they
belong beside it. The tests that drove them come back with them; the
paragraph walks stay in walk.rs and edit re-exports them.

base64 0.23, as WordCraft and craft-offcrypto use.

* craft-docx: WordCraft's crates/docx as it is at wordcraft 07f97737

The source, unchanged, so the next commit shows only what the move changes.
This commit does not build on its own (it still names wordcraft-doc and
wordcraft-geom, and is not a workspace member yet).

* craft-docx: on craft-wordmodel, craft-opc, craft-xml and craft-offcrypto

- The package (zip reading, part names, relationships, content types,
  zip writing) is craft-opc's; the module keeps WordCraft's bookkeeping
  (passthrough keys, the embedded-part manifest) and its own Rel/Rels shape.
- Parts are parsed with craft-xml's canonical names (the Strict drawing
  names and mc:Choice/@Requires through its hooks), then given the tree
  shape the reader was written against.
- Encryption and Restrict Editing hashes are craft-offcrypto's; this crate
  maps its errors and the w:documentProtection attributes.
- wordcraft-doc is craft-wordmodel; wordcraft-geom's helpers are its geom.

Tests that covered what now lives in craft-opc and craft-offcrypto are left to
those crates; the DIFAT regression is craft-cfb's. Test-only zip use follows
zip 9's fallible names. The attribute-cap test times the read only.
2026-11-11 20:31:40 -05:00
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