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package system
import (
"strings"
)
type (
// Enablement represents an optional system resource
Enablement uint8
// Enablements represents optional system resources to share
Enablements uint64
)
const (
EWayland Enablement = iota
EX11
EDBus
EPulse
)
var enablementString = [...]string{
EWayland: "Wayland",
EX11: "X11",
EDBus: "D-Bus",
EPulse: "PulseAudio",
}
const ELen = len(enablementString)
func (e Enablement) String() string {
if int(e) >= ELen {
return "<invalid enablement>"
}
return enablementString[e]
}
func (e Enablement) Mask() Enablements {
return 1 << e
}
// Has returns whether a feature is enabled
func (es *Enablements) Has(e Enablement) bool {
return *es&e.Mask() != 0
}
// Set enables a feature
func (es *Enablements) Set(e Enablement) {
if es.Has(e) {
panic("enablement " + e.String() + " set twice")
}
*es |= e.Mask()
}
func (es *Enablements) String() string {
buf := new(strings.Builder)
for i := Enablement(0); i < Enablement(ELen); i++ {
if es.Has(i) {
buf.WriteString(", " + i.String())
}
}
if buf.Len() == 0 {
buf.WriteString("(No enablements)")
}
return strings.TrimPrefix(buf.String(), ", ")
}
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