ase

Golang package for decoding and encoding ASE (Adobe Swatch Exchange) files.

The ASE specification can be found here.

Install

$ go get github.com/arolek/ase

Getting started

The ASE package exposes a Decode and Encode method. You simply pass an io.Reader interface to ase.Decode and it will return an ASE struct of the decoded data. For convenience, a DecodeFile method is available to decode an existing ASE file. For encoding, simply initialize an ASE struct and populate it with the appropriate Groups and Colors data.

Examples

Decoding

package main

import (
	"log"

	"github.com/ARolek/ase"
)

func main() {
	//	open the file
	f, err := os.Open("/path/to/test.ase")
	if err != nil {
		log.Println(err)
	}

	//	decode can take in any io.Reader
	ase, err := ase.Decode(f)
	if err != nil {
		log.Println(err)
	}

	log.Printf("%+v\n", ase)
}

Encoding

package main

import (
	"os"

	"github.com/ARolek/ase"
)

var testColors = []ase.Color{
	ase.Color{
		Name:   "RGB",
		Model:  "RGB",
		Values: []float32{1, 1, 1},
		Type:   "Normal",
	},
	ase.Color{
		Name:   "Grayscale",
		Model:  "CMYK",
		Values: []float32{0, 0, 0, 0.47},
		Type:   "Spot",
	},
	ase.Color{
		Name:   "cmyk",
		Model:  "CMYK",
		Values: []float32{0, 1, 0, 0},
		Type:   "Spot",
	},
	ase.Color{
		Name:   "LAB",
		Model:  "RGB",
		Values: []float32{0, 0.6063648, 0.524658},
		Type:   "Global",
	},
	ase.Color{
		Name:   "PANTONE P 1-8 C",
		Model:  "LAB",
		Values: []float32{0.9137255, -5, 94},
		Type:   "Spot",
	},
}

var testGroup = ase.Group{
	Name: "A Color Group",
	Colors: []ase.Color{
		ase.Color{
			Name:   "Red",
			Model:  "RGB",
			Values: []float32{1, 0, 0},
			Type:   "Global",
		},
		ase.Color{
			Name:   "Green",
			Model:  "RGB",
			Values: []float32{0, 1, 0},
			Type:   "Global",
		},
		ase.Color{
			Name:   "Blue",
			Model:  "RGB",
			Values: []float32{0, 0, 1},
			Type:   "Global",
		},
	},
}

func main() {
	// Initialize a sample ASE
	sampleAse := ase.ASE{}
	sampleAse.Colors = testColors
	sampleAse.Groups = append(sampleAse.Groups, testGroup)

	// Create the file to write the encoded ASE
	f, err := os.Create("./encoded.ase")
	if err != nil {
		panic(err)
	}

	// It’s idiomatic to defer a Close immediately after opening a file.
	defer f.Close()

	//	encode our ASE file
	if err = ase.Encode(sampleAse, f){
		panic(err)
	}
}

Credits

Thanks to francistmakes for the killer work on the Encoding part of the package!

License

See LICENSE file in repository.