add --identify

doIdentify.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"os"
+
+	"go.wit.com/log"
+)
+
+// print the protobuf in human form
+func doIdentify(filename string) error {
+	data, err := os.ReadFile(filename)
+	if err != nil {
+		// log.Info("open config file :", err)
+		return err
+	}
+
+	var pb *Identify
+	pb = new(Identify)
+	if err := pb.Unmarshal(data); err != nil {
+		return err
+	}
+	log.Info("Identify protobuf file uuid =", pb.Uuid, "version =", pb.Version)
+	return nil
+}

file.proto

@@ -98,5 +98,5 @@ message Files {                           // `autogenpb:marshal`
 // then dump the uuid and version from any arbitrary .pb file
 message Identify {                        // `autogenpb:marshal`
         string   uuid	          = 1;    //
-        int64    version          = 2;    //
+        string   version          = 2;    //
 }

main.go

@@ -34,6 +34,13 @@ func main() {
 	var pb *Files
 	pb = new(Files)
 
+	if argv.Identify != "" {
+		if err := doIdentify(argv.Identify); err != nil {
+			badExit(err)
+		}
+		okExit("")
+	}
+
 	// you need a proto file
 	if argv.Proto == "" {
 		log.Info("you must provide --proto <filename>")