// Listing accessible input devices.
func ExampleListInputDevices() {
devices, _ := evdev.ListInputDevices()
for _, dev := range devices {
fmt.Printf("%s %s %s", dev.Fn, dev.Name, dev.Phys)
}
}
// Select a device from a list of accessible input devices.
func select_device() (*evdev.InputDevice, error) {
fns, _ := evdev.ListInputDevices(device_glob)
devices := make([]*evdev.InputDevice, 0)
for i := range fns {
dev, err := evdev.Open(fns[i])
if err == nil {
devices = append(devices, dev)
}
}
lines := make([]string, 0)
max := 0
if len(devices) > 0 {
for i := range devices {
dev := devices[i]
str := fmt.Sprintf("%-3d %-20s %-35s %s", i, dev.Fn, dev.Name, dev.Phys)
if len(str) > max {
max = len(str)
}
lines = append(lines, str)
}
fmt.Printf("%-3s %-20s %-35s %s\n", "ID", "Device", "Name", "Phys")
fmt.Printf(strings.Repeat("-", max) + "\n")
fmt.Printf(strings.Join(lines, "\n") + "\n")
var choice int
choice_max := len(lines) - 1
ReadChoice:
fmt.Printf("Select device [0-%d]: ", choice_max)
_, err := fmt.Scan(&choice)
if err != nil || choice > choice_max || choice < 0 {
goto ReadChoice
}
return devices[choice], nil
}
errmsg := fmt.Sprintf("no accessible input devices matched by %s", device_glob)
return nil, errors.New(errmsg)
}