Add completion command to generate shell completion via carapace

carapace is a command-line completion generator for cobra. Currently bash, fish,
powershell and zsh are officially supported.
The hidden `_carapace` command can be used to generate the completion for other
shells (experimental).

cmd/knoxite/main.go

@@ -1,7 +1,7 @@
 /*
  * knoxite
  *     Copyright (c) 2016-2020, Christian Muehlhaeuser <muesli@gmail.com>
- *     Copyright (c) 2020,      Nicolas Martin <penguwin@penguwin.eu>
+ *     Copyright (c) 2020-2021, Nicolas Martin <penguwin@penguwin.eu>
  *     Copyright (c) 2020,      Matthias Hartmann <mahartma@mahartma.com>
  *
  *   For license see LICENSE
@@ -18,6 +18,7 @@ import (
 
 	shutdown "github.com/klauspost/shutdown2"
 	"github.com/spf13/cobra"
+	"github.com/rsteube/carapace"
 
 	"github.com/knoxite/knoxite"
 	"github.com/knoxite/knoxite/cmd/knoxite/config"
@@ -80,6 +81,9 @@ func main() {
 	globalOpts.Repo = os.Getenv("KNOXITE_REPOSITORY")
 	globalOpts.Password = os.Getenv("KNOXITE_PASSWORD")
 
+	// add the `completion` command via carapace
+	carapace.Gen(RootCmd)
+
 	if err := RootCmd.Execute(); err != nil {
 		fmt.Println(err)
 		os.Exit(-1)

go.mod

@@ -26,12 +26,13 @@ require (
 	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d
 	github.com/onsi/ginkgo v1.14.2
 	github.com/onsi/gomega v1.10.3
-	github.com/pelletier/go-toml v1.9.0
+	github.com/pelletier/go-toml v1.9.3
 	github.com/pkg/sftp v1.13.0
 	github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7 // indirect
 	github.com/restic/chunker v0.4.0
+	github.com/rsteube/carapace v0.8.14
 	github.com/segmentio/go-env v1.1.0 // indirect
-	github.com/spf13/cobra v1.1.3
+	github.com/spf13/cobra v1.2.1
 	github.com/spf13/pflag v1.0.5
 	github.com/studio-b12/gowebdav v0.0.0-20210203212356-8244b5a5f51a
 	github.com/t3rm1n4l/go-mega v0.0.0-20200416171014-ffad7fcb44b8
@@ -41,9 +42,8 @@ require (
 	github.com/ungerik/go-dry v0.0.0-20180411133923-654ae31114c8 // indirect
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
 	golang.org/x/net v0.0.0-20210410081132-afb366fc7cd1
-	golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57
+	golang.org/x/sys v0.0.0-20210510120138-977fb7262007
 	golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1
 	google.golang.org/api v0.44.0
-	gopkg.in/ini.v1 v1.51.1 // indirect
 	gopkg.in/kothar/go-backblaze.v0 v0.0.0-20210124194846-35409b867216
 )