add config file support

config.go

@@ -0,0 +1,49 @@
+package main
+
+// functions to import and export the protobuf
+// data to and from config files
+
+import (
+	"errors"
+	"os"
+
+	"go.wit.com/lib/config"
+	"go.wit.com/lib/protobuf/forgepb"
+	"go.wit.com/log"
+)
+
+func configSave() error {
+	return config.ConfigSave(me.configs)
+}
+
+func (me *mainType) configInit() error {
+	if argv.Hostname != "" {
+		HOSTNAME = argv.Hostname
+	}
+
+	// the default forged dir is /home/forge
+	if os.Getenv("FORGE_GOSRC") == "" {
+		os.Setenv("FORGE_GOSRC", "/home/forge")
+	}
+
+	if os.Getenv("FORGE_PATCHDIR") == "" {
+		os.Setenv("FORGE_PATCHDIR", "/var/lib/forged")
+	}
+
+	me.configs = new(forgepb.ForgeConfigs)
+	err := config.ConfigLoad(me.configs, ARGNAME, "forge")
+	if errors.Is(err, os.ErrNotExist) {
+		me.configs.ReposDir = "/home/forge"
+		me.configs.ReposPB = "/home/forge/repos.pb"
+		me.configs.PatchDir = "/var/lib/forged"
+		if err := configSave(); err != nil {
+			badExit(err)
+		}
+		log.Info("made a default config file here", me.configs.Filename)
+		okExit("")
+	}
+	if err != nil {
+		badExit(err)
+	}
+	return err
+}

main.go

@@ -4,7 +4,6 @@ import (
 	"embed"
 	"fmt"
 	"net/http"
-	"os"
 	"time"
 
 	"go.wit.com/dev/alexflint/arg"
@@ -31,18 +30,7 @@ func main() {
 	me.myGui = prep.Gui()                   // prepares the GUI package for go-args
 	me.pp = arg.MustParse(&argv)
 
-	if argv.Hostname != "" {
-		HOSTNAME = argv.Hostname
-	}
-
-	// the default forged dir is /home/forge
-	if os.Getenv("FORGE_GOSRC") == "" {
-		os.Setenv("FORGE_GOSRC", "/home/forge")
-	}
-
-	if os.Getenv("FORGE_PATCHDIR") == "" {
-		os.Setenv("FORGE_PATCHDIR", "/var/lib/forged")
-	}
+	me.configInit() // reads in the config file
 
 	me.forge = forgepb.RawInitPB()
 

structs.go

@@ -13,7 +13,8 @@ var me *mainType
 
 // this app's variables
 type mainType struct {
-	pp    *arg.Parser    // for parsing the command line args.  Yay to alexf lint!
-	forge *forgepb.Forge // for holding the forge protobuf files
-	myGui *prep.GuiPrep  // the gui toolkit handle
+	pp      *arg.Parser           // for parsing the command line args.  Yay to alexf lint!
+	forge   *forgepb.Forge        // for holding the forge protobuf files
+	myGui   *prep.GuiPrep         // the gui toolkit handle
+	configs *forgepb.ForgeConfigs // for holding the forge protobuf files
 }