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.ai import: anchors are smooth or corners by the case of their segment operators

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In editing data and legacy .ai files, a lower-case l, c, v or y makes the
anchor the segment ends on smooth and an upper-case L, C, V or Y makes it a
corner. The reader used to guess each anchor's kind from whether its
handles are in line, so a lower-case l always read as a corner and an
upper-case C with handles in line read as smooth. A closed path's first
anchor takes the case of the segment back to it. Points and handles do not
move. Paths, compound paths, clipping paths, guide paths, area type frames
and type-on-a-path paths all keep the kinds.
This commit is contained in:
dotCooCoo
2026-11-02 12:04:23 +07:00
committed by bflatastic
parent ae46139b20
commit 13db3cd602
8 changed files with 281 additions and 27 deletions
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crates/engine/tests/import_fuzz.rs
+5 -2
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@@ -2645,6 +2645,9 @@ fn editing_text() -> String {
square(40),
"50 10 m 60 10 L 60 20 L 50 20 L h W f".into(),
"Q".into(),
// Smooth and corner anchors by the case of each segment's operator, back to the start.
"10 50 m 20 60 30 50 40 50 c 45 50 50 55 v 55 60 60 60 Y 60 50 l 50 40 30 40 10 50 C s".into(),
"70 50 m 80 50 l 80 60 L 70 60 y h S".into(),
"1 Xw".into(),
"u".into(),
"/AI11Text :\n0 /FreeUndo ,\n;".into(),
@@ -3080,7 +3083,7 @@ proptest! {
/// An Illustrator EPS whose editing data is damaged or hostile: read as its layers, or as its page.
#[test]
fn eps_editing_data_never_panics(cut in 0usize..3_000, edits in prop::collection::vec((0usize..3_000, prop::sample::select(vec!['0', '9', '-', '.', ' ', '\n', '(', ')', '/', ':', ';', '[', ']', '%', 'q', 'Q', 'W', 'u', 'U', 'L', 'k', 'x'])), 0..12)) {
fn eps_editing_data_never_panics(cut in 0usize..3_000, edits in prop::collection::vec((0usize..3_000, prop::sample::select(vec!['0', '9', '-', '.', ' ', '\n', '(', ')', '/', ':', ';', '[', ']', '%', 'q', 'Q', 'W', 'u', 'U', 'L', 'l', 'c', 'C', 'v', 'V', 'y', 'Y', 'k', 'x'])), 0..12)) {
let text = mutate_text(&editing_text(), cut, &edits);
let bytes = editing_eps(&text);
survive("mutated EPS editing data", || vectorcraft_eps::import(&bytes).ok().map(|r| r.document))?;
@@ -3122,7 +3125,7 @@ proptest! {
/// A `.ai` whose editing data is damaged or hostile.
#[test]
fn ai_editing_data_never_panics(cut in 0usize..3_000, edits in prop::collection::vec((0usize..3_000, prop::sample::select(vec!['0', '9', '-', '.', ' ', '\n', '(', ')', '/', ':', ';', '[', ']', '%', 'q', 'Q', 'W', 'u', 'U', 'L', 'k', 'x'])), 0..12), damage in prop::collection::vec((0usize..4_000, any::<u8>()), 0..4)) {
fn ai_editing_data_never_panics(cut in 0usize..3_000, edits in prop::collection::vec((0usize..3_000, prop::sample::select(vec!['0', '9', '-', '.', ' ', '\n', '(', ')', '/', ':', ';', '[', ']', '%', 'q', 'Q', 'W', 'u', 'U', 'L', 'l', 'c', 'C', 'v', 'V', 'y', 'Y', 'k', 'x'])), 0..12), damage in prop::collection::vec((0usize..4_000, any::<u8>()), 0..4)) {
let text = mutate_text(&editing_text(), cut, &edits);
let mut private = [b"%AI24_ZStandard_Data".as_slice(), &zstd(&text)].concat();
for (at, b) in damage {