feat(cmd): Add version flag

cmd/cmd.go

@@ -9,10 +9,11 @@ import (
 	"github.com/spf13/pflag"
 )
 
-func New() *cobra.Command {
+func New(version, commit string) *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "pwgen",
-		Short: "Generate passwords",
+		Use:     "pwgen",
+		Short:   "Generate passwords",
+		Version: buildVersion(version, commit),
 
 		DisableAutoGenTag: true,
 	}
@@ -27,11 +28,21 @@ func New() *cobra.Command {
 	)
 
 	// default cmd if no cmd is given
+	cmd.InitDefaultVersionFlag()
 	subCmd, _, err := cmd.Find(os.Args[1:])
 	if err == nil && subCmd.Use == cmd.Use && cmd.Flags().Parse(os.Args[1:]) != pflag.ErrHelp {
-		args := append([]string{template.Use}, os.Args[1:]...)
-		cmd.SetArgs(args)
+		if versionFlag, err := cmd.Flags().GetBool("version"); err == nil && !versionFlag {
+			args := append([]string{template.Use}, os.Args[1:]...)
+			cmd.SetArgs(args)
+		}
 	}
 
 	return cmd
 }
+
+func buildVersion(version, commit string) string {
+	if commit != "" {
+		version += " (" + commit + ")"
+	}
+	return version
+}

internal/generate/completions/main.go

@@ -36,7 +36,7 @@ func main() {
 		panic(err)
 	}
 
-	rootCmd := cmd.New()
+	rootCmd := cmd.New("", "")
 	name := rootCmd.Name()
 	var buf bytes.Buffer
 	rootCmd.SetOut(&buf)

internal/generate/docs/main.go

@@ -23,7 +23,7 @@ func main() {
 		log.Fatal(fmt.Errorf("failed to mkdir: %w", err))
 	}
 
-	rootCmd := cmd.New()
+	rootCmd := cmd.New("", "")
 
 	err = doc.GenMarkdownTree(rootCmd, output)
 	if err != nil {

internal/generate/manpages/main.go

@@ -35,7 +35,7 @@ func main() {
 		panic(err)
 	}
 
-	rootCmd := cmd.New()
+	rootCmd := cmd.New("", "")
 	rootName := rootCmd.Name()
 
 	date, err := time.Parse(time.RFC3339, dateParam)

main.go

@@ -7,8 +7,13 @@ import (
 	"github.com/gabe565/pwgen-go/cmd"
 )
 
+var (
+	version = "beta"
+	commit  = ""
+)
+
 func main() {
-	rootCmd := cmd.New()
+	rootCmd := cmd.New(version, commit)
 	if err := rootCmd.Execute(); err != nil {
 		os.Exit(1)
 	}