added version command

Author: reflog

main.go

@@ -21,6 +21,8 @@ import (
 	"golang.org/x/tools/imports"
 )
 
+var version = "undefined"
+
 const DEFAULT_TEMPLATE = `
 // DO NOT EDIT, auto generated by struct2interface
 
@@ -163,6 +165,15 @@ func main() {
 		},
 	}
 
+	var versionCmd = &cobra.Command{
+		Use:   "version",
+		Short: "Show version",
+		Run: func(cmd *cobra.Command, args []string) {
+			log.Printf("version: %s", version)
+		},
+	}
+
+	rootCmd.AddCommand(versionCmd)
 	rootCmd.Flags().StringVarP(&folder, "folder", "f", "", "Path to the package in which the struct resides")
 	_ = rootCmd.MarkFlagRequired("folder")
 	rootCmd.Flags().StringVarP(&outputFile, "output", "o", "", "Path to output file (will be overwritten)")