func main() {
var dev *evdev.InputDevice
var events []evdev.InputEvent
var err error
switch len(os.Args) {
case 1:
dev, err = select_device()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
case 2:
dev, err = evdev.Open(os.Args[1])
if err != nil {
fmt.Printf("unable to open input device: %s\n", os.Args[1])
os.Exit(1)
}
default:
fmt.Printf(usage + "\n")
os.Exit(1)
}
info := fmt.Sprintf("bus 0x%04x, vendor 0x%04x, product 0x%04x, version 0x%04x",
dev.Bustype, dev.Vendor, dev.Product, dev.Version)
repeat_info := dev.GetRepeatRate()
fmt.Printf("Evdev protocol version: %d\n", dev.EvdevVersion)
fmt.Printf("Device name: %s\n", dev.Name)
fmt.Printf("Device info: %s\n", info)
fmt.Printf("Repeat settings: repeat %d. delay %d\n", repeat_info[0], repeat_info[1])
fmt.Printf("Device capabilities:\n")
// for ctype, codes := range dev.Capabilities {
// fmt.Printf(" Type %s %d\n", ctype.Name, ctype.Type)
// for i := range codes {
// fmt.Printf(" Code %d %s\n", codes[i].Code, codes[i].Name)
// }
// }
fmt.Printf("Listening for events ...\n")
for {
events, err = dev.Read()
for i := range events {
str := format_event(&events[i])
fmt.Println(str)
}
}
}
// 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)
}