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Description:

adobecolorswatch 1.0.0

Adobe Color Swatch
Description
swatch.py is a Python 3 command line interface created to extract Color
Swatch data from .aco files and save them as a simple .csv. It can also
work in revers and generate a .aco file based on a .csv data file.
Installation
Install from GitHub repository:
pip3 install git+https://github.com/kdybicz/adobe-color-swatch

Usage
Extract .aco
usage: swatch extract [-h] -i INPUT -o OUTPUT [-v]

Extract .aco input file to a .csv output file

optional arguments:
-h, --help show this help message and exit
-i INPUT, --input INPUT
input file
-o OUTPUT, --output OUTPUT
output file
-v, --verbose increase output verbosity

Generate .aco
usage: swatch generate [-h] -i INPUT -o OUTPUT [-v]

generate .aco output file based on .csv input file

optional arguments:
-h, --help show this help message and exit
-i INPUT, --input INPUT
input file
-o OUTPUT, --output OUTPUT
output file
-v, --verbose increase output verbosity

Specification
.aco file format parser and generator were created based on
Adobe Color Swatch File Format Specification.
Script is supporting both version 1 and 2 of the Color Swatch format.
.csv file is using custom format:
name,space_id,color
RGB Magenta 16-bit,0,#FF00FF
RGB Magenta 32-bit,0,#FFFF0000FFFF
CMYK Magenta 16-bit,2,#FF00FFFF
CMYK Magenta 32-bit,2,#FFFF0000FFFFFFFF
75% Gray,8,#1D4C

Color space IDs
Supported color spaces

ID
Name
Color information

0
RGB
Supports 16 and 32 bit channels, so accordingly 6 or 12 bytes of color information

1
HSB
Supports 16 and 32 bit channels, so accordingly 6 or 12 bytes of color information

2
CMYK
Supports 16 and 32 bit channels, so accordingly 8 or 16 bytes of color information

8
Grayscale
Supports 16 and 32 bit channel, so accordingly 2 or 4 bytes of color information

NOT supported color spaces

ID
Name

3
Pantone matching system

4
Focoltone colour system

5
Trumatch color

6
Toyo 88 colorfinder 1050

7
Lab

10
HKS colors

Validation
To validate that the .aco file generation is working properly I decided on
the following process:

export few default Color Swatches from Adobe Photoshop 2022
extract them to .csv files and make sure data in that files are matching
to what is in the Adobe Photoshop
generate new .aco files from .csv acquired in the previous step
compare original .aco files with ones regenerated from .csv using:

hexdump examples/utf.aco > utf.aco.hex
hexdump utf-new.aco > utf-new.aco.hex
diff utf.aco.hex utf-new.aco.hex -y

import new .aco files into Adobe Photoshop and compare them with original
Swatches

Notes
I'm aware that original .aco files contain some additional bytes at the end
of the files. Those bytes which will not be present in .aco files generated
by the script. These bytes might be related to
Custom color spaces,
which are not supported by this script.
Nevertheless I was able to successfully import generated .aco files back into
the Adobe Photoshop and use them in my work!
Development
Testing and linting
For all supported environments:
tox --parallel

Note: running tests for all supported Python versions require to have
Python interpreters for those versions to be installed.
For particular environment:
tox -e py39

For running tests in development environment:
tox --devenv venv -e py39
. venv/bin/activate
pytest

Local installation
Install a project in editable mode:
pip3 install -e .

Deployment
Building the packages:
./venv/bin/python setup.py sdist bdist_wheel

Checking if build packages are valid:
twine check dist/*

Uploading to pypi:
twine upload -r pypi dist/*