ilp_file_codec 1.0.4

.ilp file codec.

Image Layers Package(.ilp) file codec

Features

This package is the .ilp file codec.

Work flows

1. Use the Photoshop plugin to export the config.json and some images files.
2. Use ILP encoder encode the config.json to .ilp file.
3. Use ILP decoder decode the .ilp file to data.

The .ilp file structure

Part	Range	Length	Bytes Content	Gzip	Desc
A	0 ~ 3	4	[0x49, 0x4c, 0x50, 0x21]		Fixed file strings. convert to utf8 is: ILP!
B	4 ~ 7	4	int32 value		Protobuf ILPHeader bytes length
C	8 ~ 8+C	Part B int value	Protobuf ILPHeader bytes	✔	Check out protobuf
D	7+C+1 ~ dynamic	dynamic	Protobuf ILPInfo(List) bytes	✔	Check out protobuf
E	dynamic ~ end	dynamic	Protobuf ILPLayer(List) bytes	✔	Check out protobuf

Usage

Check out the test/ilp_codec_test.dart file.

Before run the test

• Requirement: Open test.psd and use the Photoshop plugin export the files to the test folder.

• Optional: Run the command to generate protobuf dart side code:

  cd ./ilp_codec
  protoc -I .\protobuf --dart_out=.\lib\protobuf .\protobuf\*.proto
  

License

MIT