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+/************************************************************************************
+
+PublicHeader: n/a
+Filename : Util_Settings.h
+Content : Persistent settings subsystem
+Created : June 11, 2014
+Author : Chris Taylor
+
+Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#ifndef OVR_Settings_h
+#define OVR_Settings_h
+
+#include "../Kernel/OVR_String.h"
+#include "../Kernel/OVR_System.h"
+#include "../Kernel/OVR_Observer.h"
+#include "../OVR_JSON.h"
+#include "Util_LongPollThread.h"
+
+namespace OVR { namespace Util {
+
+
+//-----------------------------------------------------------------------------
+// Settings
+
+class Settings : public NewOverrideBase, public SystemSingletonBase<Settings>
+{
+ OVR_DECLARE_SINGLETON(Settings);
+
+ ObserverScope<LongPollThread::PollFunc> PollObserver;
+ void pollDirty();
+
+ // Helpers (call with lock held)
+ void loadFile();
+ void updateFile();
+
+ // Synchronization for data access
+ Lock DataLock;
+
+ // Full path to the JSON settings file
+ String FullFilePath;
+
+ // Backed by JSON
+ Ptr<JSON> Root;
+
+ // Dirty flag to capture multiple changes for long poll writes
+ bool Dirty;
+
+public:
+ void SetFileName(const String& fileName);
+
+ void SetNumber(const char* key, double value);
+ void SetInt(const char* key, int value);
+ void SetBool(const char* key, bool value);
+ void SetString(const char* key, const char* value);
+
+ double GetNumber(const char* key, double defaultValue = 0.);
+ int GetInt(const char* key, int defaultValue = 0);
+ bool GetBool(const char* key, bool defaultValue = false);
+ String GetString(const char* key, const char* defaultValue = "");
+};
+
+
+}} // namespace OVR::Util
+
+#endif // OVR_Settings_h