Add autocomplete

weed/command/autocomplete.go

@@ -0,0 +1,109 @@
+package command
+
+import (
+	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
+	"github.com/posener/complete"
+	completeinstall "github.com/posener/complete/cmd/install"
+	"runtime"
+)
+
+func AutocompleteMain(commands []*Command) bool {
+	subCommands := make(map[string]complete.Command)
+	helpSubCommands := make(map[string]complete.Command)
+	for _, cmd := range commands {
+		flags := make(map[string]complete.Predictor)
+		cmd.Flag.VisitAll(func(flag *flag.Flag) {
+			flags["-"+flag.Name] = complete.PredictAnything
+		})
+
+		subCommands[cmd.Name()] = complete.Command{
+			Flags: flags,
+		}
+		helpSubCommands[cmd.Name()] = complete.Command{}
+	}
+	subCommands["help"] = complete.Command{Sub: helpSubCommands}
+
+	globalFlags := make(map[string]complete.Predictor)
+	flag.VisitAll(func(flag *flag.Flag) {
+		globalFlags["-"+flag.Name] = complete.PredictAnything
+	})
+
+	weedCmd := complete.Command{
+		Sub:         subCommands,
+		Flags:       globalFlags,
+		GlobalFlags: complete.Flags{"-h": complete.PredictNothing},
+	}
+	cmp := complete.New("weed", weedCmd)
+
+	return cmp.Complete()
+}
+
+func installAutoCompletion() bool {
+	if runtime.GOOS == "windows" {
+		fmt.Printf("windows is not supported")
+		return false
+	}
+
+	err := completeinstall.Install("weed")
+	if err != nil {
+		fmt.Printf("install failed! %s\n", err)
+		return false
+	}
+	fmt.Printf("autocompletion is enabled. Please restart your shell.\n")
+	return true
+}
+
+func uninstallAutoCompletion() bool {
+	if runtime.GOOS == "windows" {
+		fmt.Printf("windows is not supported")
+		return false
+	}
+
+	err := completeinstall.Uninstall("weed")
+	if err != nil {
+		fmt.Printf("uninstall failed! %s\n", err)
+		return false
+	}
+	fmt.Printf("autocompletion is disable. Please restart your shell.\n")
+	return true
+}
+
+var cmdAutocomplete = &Command{
+	Run:       runAutocomplete,
+	UsageLine: "autocomplete",
+	Short:     "install autocomplete",
+	Long: `weed autocomplete is installed in the shell.
+
+    Supported shells are bash, zsh, and fish.
+    Windows is not supported.
+
+`,
+}
+
+func runAutocomplete(cmd *Command, args []string) bool {
+	if len(args) != 0 {
+		cmd.Usage()
+	}
+
+	return installAutoCompletion()
+}
+
+var cmdUnautocomplete = &Command{
+	Run:       runUnautocomplete,
+	UsageLine: "unautocomplete",
+	Short:     "uninstall autocomplete",
+	Long: `weed autocomplete is uninstalled in the shell.
+
+    Windows is not supported.
+
+`,
+}
+
+func runUnautocomplete(cmd *Command, args []string) bool {
+	if len(args) != 0 {
+		cmd.Usage()
+	}
+
+	return uninstallAutoCompletion()
+}

weed/command/command.go

@@ -36,6 +36,8 @@ var Commands = []*Command{
 	cmdVersion,
 	cmdVolume,
 	cmdWebDav,
+	cmdAutocomplete,
+	cmdUnautocomplete,
 }
 
 type Command struct {

weed/weed.go

@@ -46,6 +46,11 @@ func main() {
 	glog.MaxSize = 1024 * 1024 * 32
 	rand.Seed(time.Now().UnixNano())
 	flag.Usage = usage
+
+	if command.AutocompleteMain(commands) {
+		return
+	}
+
 	flag.Parse()
 
 	args := flag.Args()