* craft-psd: Photoshop PSD/PSB reader and writer, moved from PhotoCraft
PhotoCraft's `photocraft-psd` crate (crates/psd at storytold/photocraft
63b641b55e54bf8f5c83efd977fdb16a2c255431) as `craft-psd`: the lossless
PSD/PSB model, reader, writer and builder, descriptors, the Photoshop
resource files that share its primitives (.abr, .asl, .aco, .act, .ase,
.grd, .pat, .atn, .csh, .shc) and the Photoshop blocks of a layered TIFF.
The crate had no dependency on any other PhotoCraft crate.
Code is unchanged apart from the crate name, craft-libs' rustfmt width,
comments that named other PhotoCraft crates, issue references (now
`photocraft#N`), and the corpus tests' directory (`CRAFT_PSD_CORPUS` or
`corpus/` at the workspace root). Tests, proptests, fuzz targets and
fixtures move with it.
Part of #778, #786.
* craft-psd: engine_data, the text engine document of type layers
The EngineData reader and writer from PhotoCraft's photocraft-text
(crates/text/src/engine_data.rs at storytold/photocraft 63b641b5): a
tree of values that is written back in Photoshop's layout, with strings
stored as plain bytes kept as plain bytes.
From EffectCraft's effectcraft-psd (crates/psd/src/engine_data.rs at
storytold/effectcraft 072e1af9), ported onto that tree: `first_style`,
the first style run as a typed `TextStyle` with bounded sizes and
spacings, and `minimal`, a one-run document for writers and fixtures.
`Value::index` is new.
Both apps had their own parser for the same syntax.
* craft-psd: engine_data::parse_lossy reads what it can of a damaged document
EffectCraft's EngineData reader was best effort: a truncated or damaged
document still gave the text and style it held. `parse_lossy` does that
on the same parser: a truncated dictionary, array or string keeps what
it has, a byte that starts no key is skipped, a token that is no number
becomes a name, and garbage gives an empty dictionary. `parse` stays
strict and is unchanged in what it accepts.
The parser's `value` is split into one function per kind of value, and
reads with `get` instead of indexing.
* craft-psd: Photoshop PSD/PSB reader and writer, moved from PhotoCraft
PhotoCraft's `photocraft-psd` crate (crates/psd at storytold/photocraft
63b641b55e54bf8f5c83efd977fdb16a2c255431) as `craft-psd`: the lossless
PSD/PSB model, reader, writer and builder, descriptors, the Photoshop
resource files that share its primitives (.abr, .asl, .aco, .act, .ase,
.grd, .pat, .atn, .csh, .shc) and the Photoshop blocks of a layered TIFF.
The crate had no dependency on any other PhotoCraft crate.
Code is unchanged apart from the crate name, craft-libs' rustfmt width,
comments that named other PhotoCraft crates, issue references (now
`photocraft#N`), and the corpus tests' directory (`CRAFT_PSD_CORPUS` or
`corpus/` at the workspace root). Tests, proptests, fuzz targets and
fixtures move with it.
Part of #778, #786.
* craft-psd: Head reads the header and image resources without layers or pixels
`Head::from_bytes` takes the file or a prefix that reaches the end of the
image resources; `Head::from_source` makes three reads and nothing after
the resources. `Header::from_bytes` parses the 26-byte header alone, and
`head::sniff` checks the signature.
The readers in LightCraft (header probe, EXIF/XMP scan), DesignCraft and
FilmCraft skip the layer section and work from the start of the file.
`PsdFile` parses every layer record, and `Header::read` was private, so
they had no equivalent here.
Section lengths past the data are errors before anything is allocated.
PhotoCraft's `photocraft-psd` crate (crates/psd at storytold/photocraft
63b641b55e54bf8f5c83efd977fdb16a2c255431) as `craft-psd`: the lossless
PSD/PSB model, reader, writer and builder, descriptors, the Photoshop
resource files that share its primitives (.abr, .asl, .aco, .act, .ase,
.grd, .pat, .atn, .csh, .shc) and the Photoshop blocks of a layered TIFF.
The crate had no dependency on any other PhotoCraft crate.
Code is unchanged apart from the crate name, craft-libs' rustfmt width,
comments that named other PhotoCraft crates, issue references (now
`photocraft#N`), and the corpus tests' directory (`CRAFT_PSD_CORPUS` or
`corpus/` at the workspace root). Tests, proptests, fuzz targets and
fixtures move with it.
Part of #778, #786.
Dylan M. Taylor