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/StreamTokenizer.h

@@ -0,0 +1,97 @@
+//
+// StreamTokenizer.h
+//
+// Library: Foundation
+// Package: Streams
+// Module:  StreamTokenizer
+//
+// Definition of the StreamTokenizer class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_StreamTokenizer_INCLUDED
+#define Foundation_StreamTokenizer_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/Token.h"
+#include <istream>
+#include <vector>
+
+
+namespace Poco {
+
+
+class Foundation_API StreamTokenizer
+	/// A stream tokenizer splits an input stream
+	/// into a sequence of tokens of different kinds.
+	/// Various token kinds can be registered with
+	/// the tokenizer.
+{
+public:
+	StreamTokenizer();
+		/// Creates a StreamTokenizer with no attached stream.
+
+	StreamTokenizer(std::istream& istr);
+		/// Creates a StreamTokenizer with no attached stream.
+
+	virtual ~StreamTokenizer();
+		/// Destroys the StreamTokenizer and deletes all
+		/// registered tokens.
+
+	void attachToStream(std::istream& istr);
+		/// Attaches the tokenizer to an input stream.
+
+	void addToken(Token* pToken);
+		/// Adds a token class to the tokenizer. The
+		/// tokenizer takes ownership of the token and
+		/// deletes it when no longer needed. Comment
+		/// and whitespace tokens will be marked as
+		/// ignorable, which means that next() will not
+		/// return them.
+	
+	void addToken(Token* pToken, bool ignore);
+		/// Adds a token class to the tokenizer. The
+		/// tokenizer takes ownership of the token and
+		/// deletes it when no longer needed.
+		/// If ignore is true, the token will be marked
+		/// as ignorable, which means that next() will
+		/// not return it.
+		
+	const Token* next();
+		/// Extracts the next token from the input stream.
+		/// Returns a pointer to an EOFToken if there are
+		/// no more characters to read. 
+		/// Returns a pointer to an InvalidToken if an
+		/// invalid character is encountered.
+		/// If a token is marked as ignorable, it will not
+		/// be returned, and the next token will be
+		/// examined.
+		/// Never returns a NULL pointer.
+		/// You must not delete the token returned by next().
+
+private:
+	struct TokenInfo
+	{
+		Token* pToken;
+		bool   ignore;
+	};
+	
+	typedef std::vector<TokenInfo> TokenVec;
+	
+	TokenVec      _tokens;
+	std::istream* _pIstr;
+	InvalidToken  _invalidToken;
+	EOFToken      _eofToken;
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_StreamTokenizer_INCLUDED