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Dylan M. Taylor 0984f412a6 craft-affinity: bounded reader for native Affinity documents, from VectorCraft and PhotoCraft (#914)
* craft-affinity: bounded reader for native Affinity documents, moved from VectorCraft

The reader of .af, .afdesign, .afphoto and .afpub files (archive, object stream and document
model) as it is in storytold/vectorcraft at 6e873b80 (crates/affinity), under a neutral name.
Its corpus tests read the pinned public documents scripts/fetch-affinity-corpus.sh fetches.

* craft-affinity: fold in what only PhotoCraft's copy of the reader had

From storytold/photocraft at 63b641b5 (crates/affinity), onto the VectorCraft copy:

- Special shapes: clouds, hearts, cogs, callouts, arrows, double stars, tears, crescents,
  diamonds and segments come in as their own outlines, not their bounding ellipse.
- Null slots of object lists are charged to the document's work before a list is scanned,
  on every visit of a shared object (children, attachments, effects, compound operands,
  page lists, paint lists, gradient colours, text blocks and runs, table cells, tile lists).
- A colour or gradient position record is decoded only as far as its components are read.
- 16-bit and 8-bit planes are interleaved through tables, not an f64 for each pixel.
- Limits::max_pixel_bytes: the caller sets what the pixel layers of one import may hold.
- Pixels::cmyka8_to_rgba8 for a caller without colour management.

The crate README and docs describe the model on its own terms.

* craft-affinity: a callout with a right-to-left box no longer panics; an oversized shape imports as its box

Ported from storytold/photocraft#10473 by DJHoltkamp. A callout rectangle clamped its tail
with clamp(x0, x1), which panics when the box is stored right to left. A box with finite
corners whose size overflows gave infinite or NaN outline points; it now imports as its box
with a warning. Also drops the inflated doc.dat once it is parsed.
2026-11-11 17:42:11 -05:00

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[package]
name = "craft-affinity"
description = "Bounded reader for native Affinity documents (.af, .afdesign, .afphoto, .afpub): archive, object stream and a neutral document model"
version.workspace = true
edition.workspace = true
license.workspace = true
rust-version.workspace = true
repository.workspace = true
[lints]
workspace = true
[features]
# Synthetic-container builders for tests and fuzz seeds; not an Affinity exporter.
synth = []
[dependencies]
crc32fast = "1.5"
flate2 = { version = "1", default-features = false, features = ["rust_backend"] }
# Originals embedded in a document: pixel layers read JPEG and PNG, overlays any format below.
image = { version = "0.25", default-features = false, features = ["png", "jpeg", "webp", "gif", "tiff", "bmp", "tga"] }
ruzstd = { version = "0.9.1", default-features = false, features = ["std"] }
[dev-dependencies]
proptest = { workspace = true }
# The pinned public corpus is checked against its manifest before a test reads it.
sha2 = { version = "0.10", default-features = false, features = ["std"] }