Add version command

cmd/root.go

@@ -8,6 +8,12 @@ import (
 	"os"
 )
 
+var (
+	buildVersion = ""
+	buildDate    = ""
+	buildCommit  = ""
+)
+
 var rootCmd = &cobra.Command{
 	Use:   "go-mlog",
 	Short: "golang to mlog transpiler",
@@ -31,7 +37,10 @@ var rootCmd = &cobra.Command{
 	},
 }
 
-func Execute() {
+func Execute(version string, date string, commit string) {
+	buildVersion = version
+	buildDate = date
+	buildCommit = commit
 	if err := rootCmd.Execute(); err != nil {
 		panic(err)
 	}

cmd/version.go

@@ -0,0 +1,19 @@
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print current go-mlog version",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		fmt.Printf("%s-%s-%s", buildVersion, buildCommit, buildDate)
+		return nil
+	},
+}

main.go

@@ -8,6 +8,17 @@ import (
 	_ "github.com/Vilsol/go-mlog/x/impl"
 )
 
+var (
+	// The build version
+	version = "dev"
+
+	// The build commit
+	commit = "none"
+
+	// The build date
+	date = "unknown"
+)
+
 func main() {
-	cmd.Execute()
+	cmd.Execute(version, date, commit)
 }