gnome.go

package wallpaper

import (
	"os/exec"
	"strings"

	yaml "gopkg.in/yaml.v2"
)

func removeProtocol(input string) string {
	if len(input) >= 7 && input[:7] == "file://" {
		return input[7:]
	}
	return input
}

func parseDconf(command string, args ...string) (string, error) {
	output, err := exec.Command(command, args...).Output()
	if err != nil {
		return "", err
	}

	// unquote string
	var unquoted string
	// the output is quoted with single quotes, which cannot be unquoted using strconv.Unquote, but it is valid yaml
	err = yaml.UnmarshalStrict(output, &unquoted)
	if err != nil {
		return unquoted, err
	}

	return removeProtocol(unquoted), nil
}

func isGNOMECompliant() bool {
	return strings.Contains(Desktop, "GNOME") || Desktop == "Unity" || Desktop == "Pantheon"
}

func (mode Mode) getGNOMEString() string {
	switch mode {
	case Center:
		return "centered"
	case Crop:
		return "zoom"
	case Fit:
		return "scaled"
	case Span:
		return "spanned"
	case Stretch:
		return "stretched"
	case Tile:
		return "wallpaper"
	default:
		panic("invalid wallpaper mode")
	}
}