1 files changed, 132 insertions, 0 deletions
diff --git a/shared/c_dll.h b/shared/c_dll.h
new file mode 100644
index 00000000..4d485893
--- /dev/null
+++ b/shared/c_dll.h
@@ -0,0 +1,132 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2010 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+//
+#ifndef C_DLL_HEADER
+#define C_DLL_HEADER
+
+#include <string>
+#include <map>
+#undef min
+#include <algorithm>
+
+
+namespace c_dll
+{
+void writeString(const std::wstring& input, wchar_t* output, size_t outputLen);
+
+
+//Convert handles to objects and vice versa
+template <class S, class T> //T: prefer managed object to ensure cleanup if remove() is not called
+class HandleProvider
+{
+public:
+    static HandleProvider& instance();
+    S insert(T object);
+    void remove(S handle);
+    T& retrieve(S handle); //return default-constructed object if not found
+
+private:
+	HandleProvider() {}
+    HandleProvider(const HandleProvider&);
+    HandleProvider& operator=(const HandleProvider&);
+    S generate();
+	
+    std::map<S, T> handleMap;
+};
+/*
+Example:
+		typedef HandleProvider<TBHandle, ComPtr<ITaskbarList3> > HandleTaskbarMap;
+		HandleTaskbarMap::instance().insert(xyz);
+*/
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//########################## inline implementation #############################
+inline
+void writeString(const std::wstring& input, wchar_t* output, size_t outputLen)
+{
+    if (outputLen > 0)
+    {
+        const size_t maxSize = std::min(input.length(), outputLen - 1);
+        std::copy(input.begin(), input.begin() + maxSize, output);
+        output[maxSize] = 0;
+    }
+}
+
+
+template <class S, class T>
+inline
+HandleProvider<S, T>& HandleProvider<S, T>::instance()
+{
+    static HandleProvider inst;
+    return inst;
+}
+
+
+//convert handles to objects and vice versa
+template <class S, class T>
+inline
+S HandleProvider<S, T>::insert(T object)
+{
+    S newHandle = generate();
+    handleMap.insert(std::make_pair(newHandle, object));
+    return newHandle;
+}
+
+
+template <class S, class T>
+inline
+void HandleProvider<S, T>::remove(S handle)
+{
+    handleMap.erase(handle);
+}
+
+
+template <class S, class T>
+inline
+T& HandleProvider<S, T>::retrieve(S handle) //return default-constructed object if not found
+{
+    return handleMap[handle];
+}
+
+
+template <class S, class T>
+inline
+S HandleProvider<S, T>::generate()
+{
+    static S handle = 0;
+    return ++handle; //don't return 0! 0 is reserved for indicating failure
+}
+
+
+}
+
+#endif //C_DLL_HEADER
+\ No newline at end of file