优化结构

internal/integration/storage/tencent_storage.go

@@ -82,6 +82,10 @@ func (s *tencentStorage) Compose(ctx context.Context, names []string, destinatio
 	return composeFiles(ctx, s, names, destination)
 }
 func (s *tencentStorage) DeletePrefix(ctx context.Context, prefix string) error {
+	prefix, err := normalizeDeletePrefix(prefix)
+	if err != nil {
+		return err
+	}
 	cursor := ""
 	for {
 		items, next, more, err := s.List(ctx, prefix, cursor, 1000)
@@ -96,7 +100,10 @@ func (s *tencentStorage) DeletePrefix(ctx context.Context, prefix string) error
 		if !more {
 			return nil
 		}
-		cursor = next
+		cursor, err = advanceDeletePrefixCursor(cursor, next, more)
+		if err != nil {
+			return err
+		}
 	}
 }
 func (s *tencentStorage) List(ctx context.Context, prefix, cursor string, limit int) ([]*system.StoredFile, string, bool, error) {