Return errors, rather than printing them

synccommon/walkUNIX.go

@@ -3,31 +3,31 @@
 package synccommon
 
 import (
+	"errors"
 	"io/fs"
 	"os"
 	"path/filepath"
 
-	"github.com/rwinkhart/go-boilerplate/back"
 	"github.com/rwinkhart/libmutton/global"
 )
 
 // WalkEntryDir walks the entry directory and returns lists of all files and directories found (two separate lists).
 // Regardless of platform, all paths are stored with forward slashes (UNIX-style).
-func WalkEntryDir() ([]string, []string) {
+func WalkEntryDir() ([]string, []string, error) {
 	// define file/directory containing slices so that they may be accessed by the anonymous WalkDir function
 	var fileList []string
 	var dirList []string
 
 	// walk entry directory
-	_ = filepath.WalkDir(global.EntryRoot,
+	err := filepath.WalkDir(global.EntryRoot,
 		func(fullPath string, entry fs.DirEntry, err error) error {
 
 			// check for errors encountered while walking directory
 			if err != nil {
 				if os.IsNotExist(err) {
-					back.PrintError("The entry directory does not exist - Initialize libmutton to create it", back.ErrorOther, true)
+					return errors.New("entry directory does not exist; initialize libmutton to create it")
 				} else {
-					back.PrintError("An unexpected error occurred while generating the entry list: "+err.Error(), back.ErrorOther, true)
+					return errors.New("an unexpected error occurred while generating the entry list: " + err.Error())
 				}
 			}
 
@@ -43,6 +43,8 @@ func WalkEntryDir() ([]string, []string) {
 
 			return nil
 		})
-
-	return fileList, dirList
+	if err != nil {
+		return nil, nil, err
+	}
+	return fileList, dirList, nil
 }