feat: add new helper function IsDirEmpty (#75)

file/dir.go

@@ -1,6 +1,8 @@
 package file
 
 import (
+	"errors"
+	"io"
 	"os"
 )
 
@@ -29,3 +31,24 @@ func IsDir(path string) (bool, error) {
 
 	return false, err
 }
+
+// IsDirEmpty returns whether the given directory path is empty.
+// If the path does not exist or is not a directory, it returns (false, err).
+func IsDirEmpty(path string) (bool, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return false, err
+	}
+	defer f.Close()
+
+	_, err = f.Readdir(1)
+	if err == nil {
+		return true, nil
+	}
+
+	if errors.Is(err, io.EOF) {
+		return true, nil
+	}
+
+	return false, err
+}