Extent scripting interface, add options interface

include/dwarfs/options_interface.h

@@ -0,0 +1,43 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/**
+ * \author     Marcus Holland-Moritz (github@mhxnet.de)
+ * \copyright  Copyright (c) Marcus Holland-Moritz
+ *
+ * This file is part of dwarfs.
+ *
+ * dwarfs is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * dwarfs is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with dwarfs.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <string>
+
+#include "dwarfs/options.h"
+
+namespace dwarfs {
+
+class options_interface {
+ public:
+  enum set_mode { DEFAULT, OVERRIDE };
+
+  virtual ~options_interface() = default;
+
+  virtual void
+  set_order(file_order_mode order_mode, set_mode mode = DEFAULT) = 0;
+  virtual void
+  set_remove_empty_dirs(bool remove_empty, set_mode mode = DEFAULT) = 0;
+  virtual void enable_similarity() = 0;
+};
+
+} // namespace dwarfs

include/dwarfs/script.h

@@ -28,6 +28,7 @@ namespace dwarfs {
 
 class entry_interface;
 class inode;
+class options_interface;
 
 class script {
  public:
@@ -36,9 +37,15 @@ class script {
 
   virtual ~script() = default;
 
+  virtual bool has_configure() const = 0;
+  virtual bool has_filter() const = 0;
+  virtual bool has_transform() const = 0;
+  virtual bool has_order() const = 0;
 
+  virtual void configure(options_interface const& oi) = 0;
   virtual bool filter(entry_interface const& ei) = 0;
   virtual void transform(entry_interface& ei) = 0;
   virtual void order(inode_vector& iv) = 0;
 };
+
 } // namespace dwarfs

test/dwarfs.cpp

@@ -164,6 +164,12 @@ class os_access_mock : public os_access {
 
 class script_mock : public script {
  public:
+  bool has_configure() const override { return true; }
+  bool has_filter() const override { return true; }
+  bool has_transform() const override { return true; }
+  bool has_order() const override { return true; }
+
+  void configure(options_interface const& /*oi*/) override {}
 
   bool filter(entry_interface const& /*ei*/) override { return true; }