feat(cmd/completion): generate shell completion files

cmd/completion/bash.go

@@ -0,0 +1,20 @@
+package completion
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var bashCompletionCmd = &cobra.Command{
+	Use:   "bash",
+	Short: "Generates a bash completion file",
+	Args:  cobra.NoArgs,
+	Run: func(cmd *cobra.Command, args []string) {
+		rootCmd.GenBashCompletion(os.Stdout)
+	},
+}
+
+func init() {
+	completionCmd.AddCommand(bashCompletionCmd)
+}

cmd/completion/completion.go

@@ -0,0 +1,22 @@
+package completion
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var (
+	rootCmd *cobra.Command
+)
+
+var completionCmd = &cobra.Command{
+	Use:   "completion",
+	Short: "Generates a shell completion file",
+}
+
+// InitCmd initialize the subcommand
+func InitCmd(cmd *cobra.Command) {
+	cmd.AddCommand(completionCmd)
+
+	rootCmd = cmd
+
+}

cmd/completion/zsh.go

@@ -0,0 +1,20 @@
+package completion
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var zshCompletionCmd = &cobra.Command{
+	Use:   "zsh",
+	Short: "Generate a zsh completion file",
+	Args:  cobra.NoArgs,
+	Run: func(cmd *cobra.Command, args []string) {
+		rootCmd.GenZshCompletion(os.Stdout)
+	},
+}
+
+func init() {
+	completionCmd.AddCommand(zshCompletionCmd)
+}

cmd/root.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/Masterminds/semver"
+	"github.com/go-flucky/flucky/cmd/completion"
 	"github.com/go-flucky/flucky/cmd/compression"
 	"github.com/go-flucky/flucky/cmd/convert"
 	"github.com/go-flucky/flucky/cmd/daemon"
@@ -68,6 +69,7 @@ func Execute(version *semver.Version) {
 
 	rootCmd.PersistentFlags().StringVar(&configFile, "config", "/etc/flucky/config.json", "Config file")
 
+	completion.InitCmd(rootCmd)
 	compression.InitCmd(rootCmd, &configFile, version)
 	convert.InitCmd(rootCmd, &configFile, version)
 	daemon.InitCmd(rootCmd, &configFile, version)