From 5f886d7c078049b01723db5c5b04b0bdf9437c9d Mon Sep 17 00:00:00 2001
From: Jeff Carr <jcarr@wit.com>
Date: Wed, 10 Sep 2025 14:56:48 -0500
Subject: add Save()

---
 load.go |  2 +-
 save.go | 57 ++++++++++++++++++++++++++++++++++++++++++---------------
 2 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/load.go b/load.go
index 1568968..5373025 100644
--- a/load.go
+++ b/load.go
@@ -45,7 +45,7 @@ func ConfigLoad(pb proto.Message, argname string, protoname string) error {
 		return ErrEmpty // file is empty
 	}
 
-	//	Unmarshal()
+	// Unmarshal()
 	if err = prototext.Unmarshal(data, pb); err != nil {
 		return err
 	}
diff --git a/save.go b/save.go
index 35c5bab..b035e7c 100644
--- a/save.go
+++ b/save.go
@@ -1,24 +1,33 @@
 package config
 
-// functions to import and export the protobuf
-// data to and from config files
+import (
+	"fmt"
+	"os"
+	"path/filepath"
 
-/*
+	"go.wit.com/log"
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/proto"
+)
 
-func (e *Events) Save() {
-	var fullname string
-	base, _ := filepath.Split(argv.Config)
-	fullname = filepath.Join(base, "events.pb")
+var ErrProtoFilename error = log.Errorf("proto does not have Filename")
 
-	data, err := e.Marshal()
+func ConfigSave(pb proto.Message) error {
+	// get pb.Filename if it is there in the .proto file
+	fullname, ok := GetFilename(pb)
+	if !ok {
+		return ErrProtoFilename
+	}
+
+	// Unmarshal()
+	data, err := prototext.Marshal(pb)
 	if err != nil {
-		log.Info("proto.Marshal() failed", err)
-		return
+		return err
 	}
-	log.Info("proto.Marshal() worked len", len(data))
-	configWrite(fullname, data)
-}
 
+	log.Infof("ConfigSave() filename=%s %d\n", fullname, len(data))
+	return configWrite(fullname, data)
+}
 
 func configWrite(fullname string, data []byte) error {
 	if _, base := filepath.Split(fullname); base == "" {
@@ -30,10 +39,28 @@ func configWrite(fullname string, data []byte) error {
 		log.Warn("open config file :", err)
 		return err
 	}
-	cfgfile.Write(data)
-	return nil
+	_, err = cfgfile.Write(data)
+	return err
 }
 
+/*
+
+func (e *Events) Save() {
+	var fullname string
+	base, _ := filepath.Split(argv.Config)
+	fullname = filepath.Join(base, "events.pb")
+
+	data, err := e.Marshal()
+	if err != nil {
+		log.Info("proto.Marshal() failed", err)
+		return
+	}
+	log.Info("proto.Marshal() worked len", len(data))
+	configWrite(fullname, data)
+}
+
+
+
 func (m *Portmaps) configWrite(fullname string, data []byte) error {
 	if _, base := filepath.Split(fullname); base == "" {
 		return fmt.Errorf("--config option not set")
-- 
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