Files
vectorcraft/crates/affinity/Cargo.toml
T
callmeBallochandClaude Opus 5.5 1c47480a09 AF.2: bounded Affinity archive and object-stream reader
Read the native container beyond its preview: the chain of allocation
tables (#FAT, #FT2, #FT3, #FT4) with newest-revision selection, CRC-checked
extraction of stored, zlib and zstd entries with their byte predictors,
and the self-describing tagged object stream in doc.dat as a generic tree
of shared, inline and positional objects.

Every declared size is checked against per-entry and per-import budgets
before allocation; the zstd window is capped at 64 MiB; table chains are
cycle-checked; arrays are checked against the remaining bytes; object
nesting stops at 384 levels.

The header now accepts container versions 8 to 12 and the flag values 4
and 8 that real Affinity 3 files carry (the previous check rejected the
public CC0 Affinity 3 documents); the thumbnail record is the same in all
those versions. Checked against 176 public documents saved by Affinity 1.x
to 3.x: every doc.dat decompresses with a matching CRC and parses with no
bytes left over.

A test-only `synth` feature builds synthetic containers for unit tests
and fuzz seeds; it is not an Affinity exporter.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GQPh8UDgMyARR5Hat9UchC
2026-10-08 17:09:56 +00:00

23 lines
527 B
TOML

[package]
name = "vectorcraft-affinity"
description = "Bounded reader for native Affinity documents: archive, object stream and document model"
version.workspace = true
edition.workspace = true
license.workspace = true
rust-version.workspace = true
[lints]
workspace = true
[features]
# Synthetic-container builders for tests and fuzz seeds; not an Affinity exporter.
synth = []
[dependencies]
crc32fast = { workspace = true }
flate2 = { workspace = true }
ruzstd = "0.9"
[dev-dependencies]
proptest = { workspace = true }