works with mutex and without again

Makefile

@@ -2,8 +2,8 @@ VERSION = $(shell git describe --tags)
 BUILDTIME = $(shell date +%Y.%m.%d_%H%M)
 
 simple: build
-	# make -C example clean simpleMutexGlobal goimports vet
+	make -C example clean simpleMutexGlobal goimports vet
-	make -C example clean simpleMutexProtoc goimports vet
+	# make -C example clean simpleMutexProtoc goimports vet
 
 full: install clean auto goimports vet build test install
 	@echo everything worked and the example ran

addMutex.go

@@ -48,7 +48,10 @@ func (pb *Files) addMutex(f *File) error {
 
 	w, _ := os.OpenFile(f.Pbfilename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
 
+	// the default is to insert a mutex directly into the struct
+	if argv.Mutex {
 		pbHeaderComment(w)
+	}
 
 	lines := strings.Split(string(data), "\n")
 	for _, line := range lines {
@@ -59,6 +62,12 @@ func (pb *Files) addMutex(f *File) error {
 			// fmt.Fprintln(w, "package "+"main")
 			continue
 		}
+		// the default is to insert a mutex directly into the struct
+		if !argv.Mutex {
+			// mutex is not to be added, only fix the package name
+			fmt.Fprintln(w, line)
+			continue
+		}
 
 		if f.structMatch(line) {
 			if argv.Mutex {
@@ -78,11 +87,14 @@ func (pb *Files) addMutex(f *File) error {
 			fmt.Fprintln(w, line)
 		}
 	}
+	if argv.Mutex {
+		// verify every structure was found
 		for _, msg := range f.MsgNames {
 			if !msg.MutexFound && msg.DoMutex {
 				return fmt.Errorf("addMutex() parse didn't work for %s", msg.Name)
 			}
 		}
+	}
 	return nil
 }
 

example/fruit.proto

@@ -11,7 +11,7 @@ syntax = "proto3";
 // "Fruits"  MUST EXIST and start exactly this way
 // It must be "Fruit" + 's' and must match the name of this file: "fruit.proto"
 
-package fruit;
+package main;
 
 import "google/protobuf/timestamp.proto"; // Import the well-known type for Timestamp