Backport SettingsInterface

src/common/layered_settings_interface.h

@@ -0,0 +1,62 @@
+#pragma once
+#include "settings_interface.h"
+#include <array>
+
+class LayeredSettingsInterface final : public SettingsInterface
+{
+public:
+  enum Layer : u32
+  {
+    LAYER_CMDLINE,
+    LAYER_GAME,
+    LAYER_INPUT,
+    LAYER_BASE,
+    NUM_LAYERS
+  };
+
+  LayeredSettingsInterface();
+  ~LayeredSettingsInterface() override;
+
+  SettingsInterface* GetLayer(Layer layer) const { return m_layers[layer]; }
+  void SetLayer(Layer layer, SettingsInterface* sif) { m_layers[layer] = sif; }
+
+  bool Save() override;
+
+  void Clear() override;
+
+  bool GetIntValue(const char* section, const char* key, s32* value) const override;
+  bool GetUIntValue(const char* section, const char* key, u32* value) const override;
+  bool GetFloatValue(const char* section, const char* key, float* value) const override;
+  bool GetDoubleValue(const char* section, const char* key, double* value) const override;
+  bool GetBoolValue(const char* section, const char* key, bool* value) const override;
+  bool GetStringValue(const char* section, const char* key, std::string* value) const override;
+
+  void SetIntValue(const char* section, const char* key, s32 value) override;
+  void SetUIntValue(const char* section, const char* key, u32 value) override;
+  void SetFloatValue(const char* section, const char* key, float value) override;
+  void SetDoubleValue(const char* section, const char* key, double value) override;
+  void SetBoolValue(const char* section, const char* key, bool value) override;
+  void SetStringValue(const char* section, const char* key, const char* value) override;
+  bool ContainsValue(const char* section, const char* key) const override;
+  void DeleteValue(const char* section, const char* key) override;
+  void ClearSection(const char* section) override;
+
+  std::vector<std::string> GetStringList(const char* section, const char* key) const override;
+  void SetStringList(const char* section, const char* key, const std::vector<std::string>& items) override;
+  bool RemoveFromStringList(const char* section, const char* key, const char* item) override;
+  bool AddToStringList(const char* section, const char* key, const char* item) override;
+
+  // default parameter overloads
+  using SettingsInterface::GetBoolValue;
+  using SettingsInterface::GetDoubleValue;
+  using SettingsInterface::GetFloatValue;
+  using SettingsInterface::GetIntValue;
+  using SettingsInterface::GetStringValue;
+  using SettingsInterface::GetUIntValue;
+
+private:
+  static constexpr Layer FIRST_LAYER = LAYER_CMDLINE;
+  static constexpr Layer LAST_LAYER = LAYER_BASE;
+
+  std::array<SettingsInterface*, NUM_LAYERS> m_layers{};
+};