Refactor: Split into more packages to reduce server binary size

synccommon/walkUNIX.go

@@ -0,0 +1,48 @@
+//go:build !windows
+
+package synccommon
+
+import (
+	"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) {
+	// 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,
+		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)
+				} else {
+					back.PrintError("An unexpected error occurred while generating the entry list: "+err.Error(), back.ErrorOther, true)
+				}
+			}
+
+			// trim root path from each path before storing
+			trimmedPath := fullPath[RootLength:]
+
+			// append the path to the appropriate slice
+			if !entry.IsDir() {
+				fileList = append(fileList, trimmedPath)
+			} else {
+				dirList = append(dirList, trimmedPath)
+			}
+
+			return nil
+		})
+
+	return fileList, dirList
+}