Function ParseColor

src/utils/color.go:76–124

ParseColor parses a string in both hex or rgb or from XResources or env variable and converts to both rgb and hex value

(raw string)

// or from XResources or env variable
// and converts to both rgb and hex value
func ParseColor(raw string) Color {
	var red, green, blue int64

	if strings.HasPrefix(raw, "${") {
		endIndex := len(raw) - 1
		raw = raw[2:endIndex]

		// From XResources database
		if strings.HasPrefix(raw, "xrdb:") {
			raw = fromXResources(raw)

			// From environment variable
		} else if env := os.Getenv(raw); len(env) > 0 {
			raw = env
		}
	}

	// rrr,bbb,ggg
	if strings.Contains(raw, ",") {
		list := strings.SplitN(raw, ",", 3)
		list = append(list, "255", "255")

		red = stringToInt(list[0], 10)
		green = stringToInt(list[1], 10)
		blue = stringToInt(list[2], 10)

	} else {
		re := regexp.MustCompile("[a-fA-F0-9]+")
		hex := re.FindString(raw)

		// Support short hex color form e.g. #fff, #121
		if len(hex) == 3 {
			expanded := []byte{
				hex[0], hex[0],
				hex[1], hex[1],
				hex[2], hex[2]}

			hex = string(expanded)
		}

		hex += "ffffff"

		red = stringToInt(hex[:2], 16)
		green = stringToInt(hex[2:4], 16)
		blue = stringToInt(hex[4:6], 16)
	}

	return color{red, green, blue}
}

func (c color) Hex() string {
	return fmt.Sprintf("%02x%02x%02x", c.red, c.green, c.blue)