1 files changed, 89 insertions, 0 deletions
diff --git a/FaceTrackNoIR/AutoClosePtr.h b/FaceTrackNoIR/AutoClosePtr.h
new file mode 100644
index 00000000..690d2c62
--- /dev/null
+++ b/FaceTrackNoIR/AutoClosePtr.h
@@ -0,0 +1,89 @@
+////////////////////////////////////////////////////////////////////////////////
+// Auto pointer template.
+
+#if !defined(AUTOCLOSEPTR_H)
+#define AUTOCLOSEPTR_H
+
+//////////////////////////////////////////////////////////////////////////////
+// T auto pointer (not suitable for containers).
+// This auto pointer uses T's member function to perform clean up, rather
+// than `operator Closeete'.
+//
+template<typename T, typename R, R (T::*Close)()>
+class AutoClosePtr
+{
+public:
+    explicit AutoClosePtr(T* p = NULL)
+        : m_p(p)
+    {  // construct from object pointer
+    }
+
+    AutoClosePtr(AutoClosePtr& Other)
+        : m_p(Other.Release())
+    {  // construct from Other AutoClosePtr
+    }
+
+    AutoClosePtr& operator=(AutoClosePtr& Other)
+    {  // assign Other
+        Reset(Other.Release());
+        return (*this);
+    }
+
+    ~AutoClosePtr()
+    {  // close and destroy
+        if(m_p)
+        {
+            (m_p->*Close)();
+            m_p = NULL;
+        }
+    }
+
+    T& operator*() const
+    {  // return T
+        return (*m_p);
+    }
+
+    T** operator&()
+    {  // return the address of the wrapped pointer
+        Reset();
+        return &m_p;
+    }
+
+    T* operator->() const
+    {  // return wrapped pointer
+        return Get();
+    }
+
+    operator bool() const
+    {  // check wrapped pointer for NULL 
+        return m_p != NULL;
+    }
+
+    T* Get() const
+    {  // return wrapped pointer
+        return m_p;
+    }
+
+    T* Release()
+    {  // return wrapped pointer and give up ownership
+        T* pTmp = m_p;
+        m_p = NULL;
+        return pTmp;
+    }
+
+    void Reset(T* p = NULL)
+    {  // destroy the object and store new pointer
+        if(p != m_p)
+        {
+            if(m_p)
+                (m_p->*Close)();
+        }
+
+        m_p = p;
+    }
+
+private:
+    T* m_p;    // the wrapped raw pointer
+};
+
+#endif // AUTOCLOSEPTR_H
+\ No newline at end of file