Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/Foundation/include/Poco/DefaultStrategy.h

@@ -0,0 +1,226 @@
+//
+// DefaultStrategy.h
+//
+// Library: Foundation
+// Package: Events
+// Module:  DefaultStrategy
+//
+// Implementation of the DefaultStrategy template.
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_DefaultStrategy_INCLUDED
+#define Foundation_DefaultStrategy_INCLUDED
+
+
+#include "Poco/NotificationStrategy.h"
+#include "Poco/SharedPtr.h"
+#include <vector>
+
+
+namespace Poco {
+
+
+template <class TArgs, class TDelegate> 
+class DefaultStrategy: public NotificationStrategy<TArgs, TDelegate>
+	/// Default notification strategy.
+	///
+	/// Internally, a std::vector<> is used to store
+	/// delegate objects. Delegates are invoked in the
+	/// order in which they have been registered.
+{
+public:
+	using DelegateHandle = TDelegate*;
+	using DelegatePtr = SharedPtr<TDelegate>;
+	using Delegates = std::vector<DelegatePtr>;
+	using Iterator = typename Delegates::iterator;
+
+public:
+	DefaultStrategy()
+	{
+	}
+
+	DefaultStrategy(const DefaultStrategy& s):
+		_delegates(s._delegates)
+	{
+	}
+
+	~DefaultStrategy()
+	{
+	}
+
+	void notify(const void* sender, TArgs& arguments)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			(*it)->notify(sender, arguments);
+		}
+	}
+
+	DelegateHandle add(const TDelegate& delegate)
+	{
+		DelegatePtr pDelegate(static_cast<TDelegate*>(delegate.clone()));
+		_delegates.push_back(pDelegate);
+		return pDelegate.get();
+	}
+
+	void remove(const TDelegate& delegate)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			if (delegate.equals(**it))
+			{
+				(*it)->disable();
+				_delegates.erase(it);
+				return;
+			}
+		}
+	}
+	
+	void remove(DelegateHandle delegateHandle)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			if (*it == delegateHandle)
+			{
+				(*it)->disable();
+				_delegates.erase(it);
+				return;
+			}
+		}
+	}
+
+	DefaultStrategy& operator = (const DefaultStrategy& s)
+	{
+		if (this != &s)
+		{
+			_delegates = s._delegates;
+		}
+		return *this;
+	}
+
+	void clear()
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			(*it)->disable();
+		}
+		_delegates.clear();
+	}
+
+	bool empty() const
+	{
+		return _delegates.empty();
+	}
+
+protected:
+	Delegates _delegates;
+};
+
+
+template <class TDelegate>
+class DefaultStrategy<void,TDelegate>: public NotificationStrategy<void, TDelegate>
+	/// Default notification strategy.
+	///
+	/// Internally, a std::vector<> is used to store
+	/// delegate objects. Delegates are invoked in the
+	/// order in which they have been registered.
+{
+public:
+	using DelegateHandle = TDelegate*;
+	using DelegatePtr = SharedPtr<TDelegate>;
+	using Delegates = std::vector<DelegatePtr>;
+	using Iterator = typename Delegates::iterator;
+
+public:
+	DefaultStrategy()
+	{
+	}
+
+	DefaultStrategy(const DefaultStrategy& s):
+		_delegates(s._delegates)
+	{
+	}
+
+	~DefaultStrategy()
+	{
+	}
+
+	void notify(const void* sender)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			(*it)->notify(sender);
+		}
+	}
+
+	DelegateHandle add(const TDelegate& delegate)
+	{
+		DelegatePtr pDelegate(static_cast<TDelegate*>(delegate.clone()));
+		_delegates.push_back(pDelegate);
+		return pDelegate.get();
+	}
+
+	void remove(const TDelegate& delegate)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			if (delegate.equals(**it))
+			{
+				(*it)->disable();
+				_delegates.erase(it);
+				return;
+			}
+		}
+	}
+
+	void remove(DelegateHandle delegateHandle)
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			if (*it == delegateHandle)
+			{
+				(*it)->disable();
+				_delegates.erase(it);
+				return;
+			}
+		}
+	}
+
+	DefaultStrategy& operator = (const DefaultStrategy& s)
+	{
+		if (this != &s)
+		{
+			_delegates = s._delegates;
+		}
+		return *this;
+	}
+
+	void clear()
+	{
+		for (Iterator it = _delegates.begin(); it != _delegates.end(); ++it)
+		{
+			(*it)->disable();
+		}
+		_delegates.clear();
+	}
+
+	bool empty() const
+	{
+		return _delegates.empty();
+	}
+
+protected:
+	Delegates _delegates;
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_DefaultStrategy_INCLUDED