Return errors, rather than printing them

global/init.go

@@ -1,6 +1,7 @@
 package global
 
 import (
+	"errors"
 	"os"
 
 	"github.com/rwinkhart/go-boilerplate/back"
@@ -8,15 +9,18 @@ import (
 
 // DirInit creates the libmutton directories.
 // Returns: oldDeviceID (from before the directory reset; will be FSMisc if there is no pre-existing ID).
-func DirInit(preserveOldConfigDir bool) string {
+func DirInit(preserveOldConfigDir bool) (string, error) {
 	// create EntryRoot
 	err := os.MkdirAll(EntryRoot, 0700)
 	if err != nil {
-		back.PrintError("Failed to create \""+EntryRoot+"\": "+err.Error(), back.ErrorWrite, true)
+		return "", errors.New("unable to create \"" + EntryRoot + "\": " + err.Error())
 	}
 
 	// get old device ID before its potential removal
-	oldDeviceID := GetCurrentDeviceID()
+	oldDeviceID, err := GetCurrentDeviceID()
+	if err != nil {
+		return "", errors.New("unable to get current device ID: " + err.Error())
+	}
 
 	// remove existing config directory (if it exists and not in append mode)
 	if !preserveOldConfigDir {
@@ -24,7 +28,7 @@ func DirInit(preserveOldConfigDir bool) string {
 		if isAccessible {
 			err = os.RemoveAll(ConfigDir)
 			if err != nil {
-				back.PrintError("Failed to remove existing config directory: "+err.Error(), back.ErrorWrite, true)
+				return "", errors.New("unable to remove existing config directory: " + err.Error())
 			}
 		}
 	}
@@ -32,8 +36,8 @@ func DirInit(preserveOldConfigDir bool) string {
 	// create config directory w/devices subdirectory
 	err = os.MkdirAll(ConfigDir+PathSeparator+"devices", 0700)
 	if err != nil {
-		back.PrintError("Failed to create \""+ConfigDir+"\": "+err.Error(), back.ErrorWrite, true)
+		return "", errors.New("unable to create \"" + ConfigDir + "\": " + err.Error())
 	}
 
-	return oldDeviceID
+	return oldDeviceID, nil
 }