* Add craft-figma-rest: a typed model of the Figma REST file JSON
The neutral model for design files: the .fig and .sketch readers map onto
it and an application's importer takes it. Typed records for the document
tree, paints, effects, text styles, layout grids, constraints, export
settings and the component and style metadata; every record keeps the
fields it has no name for, so a file read and written loses nothing.
The vectorNetwork extension is typed and documented with the others.
The layer tree is converted level by level in both directions, and the
depth and node limits are checked on the JSON before any typed value is
built.
* craft-figma-rest: Warnings and style_name for the readers that build this shape
Moved from FigCraft's REST importer and .fig reader (crates/format/src/rest.rs
Warnings, fig.rs style_name), which the .fig and Sketch mappings share.
* craft-sketch: map the layers onto the REST file JSON
FigCraft's Sketch mapping (crates/format/src/sketch/{tree,style,text,
symbols,path,shared,stack,proto}.rs at e8b53e33) moved onto
craft-figma-rest: rest::to_rest turns an Archive's pages and layers into
the REST API file JSON, with the vector networks of its paths handed over
beside it as craft_figma_rest::ext::VectorNetwork.
The star and polygon point generators it compares a path with are copied
from FigCraft's geometry; comments and two warnings no longer name the
app.
* craft-sketch: reach the nesting limit with nested groups, not 210 masters
The same limit and warning, in 1 second instead of 58 in a debug build.
* craft-sketch: a nesting limit that fits a 1 MiB stack, in small frames
The mapping recurses once per level of layer nesting, symbol expansion
included. Nested symbol instances reach its limit with shallow page JSON,
and a debug build overflowed a 2 MiB stack at about 140 levels: a crash
on hostile input.
The work on one layer, master or instance now happens in functions that
return before its children are mapped, which takes the stack per level
from about 4.5 KB to about 2 KB for an instance and its group in a debug
build. That maps about 140 levels of nested instances on 512 KiB, so the
limit is now 128 (was 200), leaving twice the room on the 1 MiB stack of
a WebAssembly build. The test at the limit runs on a 1 MiB thread.
* Cargo.lock: craft-sketch's craft-figma-rest and kurbo after the merge with main
* Add craft-sketch: the .sketch container, read
The archive half of FigCraft's .sketch import
(crates/format/src/sketch.rs at 3b9bf8c9): detection, the version cut
(Sketch 48 and newer), document.json with its fallback, the pages in
document order, images, and the budgets on member size, compression
ratio, totals and page count. The document and the pages are handed out
as the JSON the file holds; mapping the layers stays in the app.
* craft-sketch: credit line in the README
Dylan M. Taylor