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/Util/src/WinRegistryConfiguration.cpp

@@ -0,0 +1,144 @@
+//
+// WinRegistryConfiguration.cpp
+//
+// Library: Util
+// Package: Windows
+// Module:  WinRegistryConfiguration
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Util/WinRegistryConfiguration.h"
+#include "Poco/Util/WinRegistryKey.h"
+#include "Poco/NumberFormatter.h"
+#include "Poco/NumberParser.h"
+#include "Poco/Exception.h"
+
+
+namespace Poco {
+namespace Util {
+
+
+WinRegistryConfiguration::WinRegistryConfiguration(const std::string& rootPath, REGSAM extraSam): _rootPath(rootPath), _extraSam(extraSam)
+{
+	// rootPath must end with backslash
+	if (!_rootPath.empty())
+	{
+		if (_rootPath[_rootPath.length() - 1] != '\\')
+			_rootPath += '\\';
+	}
+}
+
+
+WinRegistryConfiguration::~WinRegistryConfiguration()
+{
+}
+
+
+bool WinRegistryConfiguration::getRaw(const std::string& key, std::string& value) const
+{
+	std::string keyName;
+	std::string fullPath = _rootPath + convertToRegFormat(key, keyName);
+	WinRegistryKey aKey(fullPath, true, _extraSam);
+	bool exists = aKey.exists(keyName);
+	if (exists)
+	{
+		WinRegistryKey::Type type = aKey.type(keyName);
+
+		switch (type)
+		{
+		case WinRegistryKey::REGT_STRING:
+			value = aKey.getString(keyName);
+			break;
+		case WinRegistryKey::REGT_STRING_EXPAND:
+			value = aKey.getStringExpand(keyName);
+			break;
+		case WinRegistryKey::REGT_BINARY:
+			{
+				std::vector<char> tmp = aKey.getBinary(keyName);
+				value.assign(tmp.begin(), tmp.end());
+			}
+			break;
+		case WinRegistryKey::REGT_DWORD:
+			value = Poco::NumberFormatter::format(aKey.getInt(keyName));
+			break;
+#if defined(POCO_HAVE_INT64)
+		case WinRegistryKey::REGT_QWORD:
+			value = Poco::NumberFormatter::format(aKey.getInt64(keyName));
+			break;
+#endif
+		default:
+			exists = false;
+		}
+	}
+	return exists;
+}
+
+
+void WinRegistryConfiguration::setRaw(const std::string& key, const std::string& value)
+{
+	std::string keyName;
+	std::string fullPath = _rootPath + convertToRegFormat(key, keyName);
+	WinRegistryKey aKey(fullPath, false, _extraSam);
+	aKey.setString(keyName, value);
+}
+
+
+void WinRegistryConfiguration::enumerate(const std::string& key, Keys& range) const
+{
+	std::string keyName;
+	std::string fullPath = _rootPath + convertToRegFormat(key, keyName);
+	if (fullPath.empty())
+	{
+		// return all root level keys
+#if defined(_WIN32_WCE)
+		range.push_back("HKEY_CLASSES_ROOT");
+		range.push_back("HKEY_CURRENT_USER");
+		range.push_back("HKEY_LOCAL_MACHINE");
+		range.push_back("HKEY_USERS");
+#else
+		range.push_back("HKEY_CLASSES_ROOT");
+		range.push_back("HKEY_CURRENT_CONFIG");
+		range.push_back("HKEY_CURRENT_USER");
+		range.push_back("HKEY_LOCAL_MACHINE");
+		range.push_back("HKEY_PERFORMANCE_DATA");
+		range.push_back("HKEY_USERS");
+#endif
+	}
+	else
+	{
+		fullPath += '\\';
+		fullPath += keyName;
+		WinRegistryKey aKey(fullPath, true, _extraSam);
+		aKey.values(range);
+		aKey.subKeys(range);
+	}
+}
+
+
+void WinRegistryConfiguration::removeRaw(const std::string& key)
+{
+	throw Poco::NotImplementedException("Removing a key in a WinRegistryConfiguration");
+}
+
+
+std::string WinRegistryConfiguration::convertToRegFormat(const std::string& key, std::string& value) const
+{
+	std::size_t pos = key.rfind('.');
+	if (pos == std::string::npos)
+	{
+		value = key;
+		return std::string();
+	}
+	std::string prefix(key.substr(0,pos));
+	value = key.substr(pos + 1);
+	Poco::translateInPlace(prefix, ".", "\\");
+	return prefix;
+}
+
+
+} } // namespace Poco::Util