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/XML/src/CharacterData.cpp

@@ -0,0 +1,152 @@
+//
+// CharacterData.cpp
+//
+// Library: XML
+// Package: DOM
+// Module:  DOM
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/DOM/CharacterData.h"
+#include "Poco/DOM/DOMException.h"
+#include "Poco/String.h"
+
+
+namespace Poco {
+namespace XML {
+
+
+CharacterData::CharacterData(Document* pOwnerDocument, const XMLString& data): 
+	AbstractNode(pOwnerDocument),
+	_data(data)
+{
+}
+
+
+CharacterData::CharacterData(Document* pOwnerDocument, const CharacterData& data): 
+	AbstractNode(pOwnerDocument, data),
+	_data(data._data)
+{
+}
+
+
+CharacterData::~CharacterData()
+{
+}
+
+
+void CharacterData::setData(const XMLString& data)
+{
+	if (events())
+	{
+		XMLString oldData = _data;
+		_data = data;
+		dispatchCharacterDataModified(oldData, _data);
+	}
+	else
+	{
+		_data = data;
+	}
+}
+
+
+XMLString CharacterData::substringData(unsigned long offset, unsigned long count) const
+{
+	if (offset >= _data.length())
+		throw DOMException(DOMException::INDEX_SIZE_ERR);
+
+	return _data.substr(offset, count);
+}
+
+
+void CharacterData::appendData(const XMLString& arg)
+{
+	if (events())
+	{
+		XMLString oldData = _data;
+		_data.append(arg);
+		dispatchCharacterDataModified(oldData, _data);
+	}
+	else
+	{
+		_data.append(arg);
+	}
+}
+
+
+void CharacterData::insertData(unsigned long offset, const XMLString& arg)
+{
+	if (offset > _data.length())
+		throw DOMException(DOMException::INDEX_SIZE_ERR);
+
+	if (events())
+	{
+		XMLString oldData = _data;
+		_data.insert(offset, arg);
+		dispatchCharacterDataModified(oldData, _data);
+	}
+	else
+	{
+		_data.insert(offset, arg);
+	}
+}
+
+
+void CharacterData::deleteData(unsigned long offset, unsigned long count)
+{
+	if (offset >= _data.length())
+		throw DOMException(DOMException::INDEX_SIZE_ERR);
+
+	if (events())
+	{
+		XMLString oldData = _data;
+		_data.replace(offset, count, EMPTY_STRING);
+		dispatchCharacterDataModified(oldData, _data);
+	}
+	else
+		_data.replace(offset, count, EMPTY_STRING);
+}
+
+
+void CharacterData::replaceData(unsigned long offset, unsigned long count, const XMLString& arg)
+{
+	if (offset >= _data.length())
+		throw DOMException(DOMException::INDEX_SIZE_ERR);
+
+	if (events())
+	{
+		XMLString oldData = _data;
+		_data.replace(offset, count, arg);
+		dispatchCharacterDataModified(oldData, _data);
+	}
+	else
+	{
+		_data.replace(offset, count, arg);
+	}
+}
+
+
+const XMLString& CharacterData::getNodeValue() const
+{
+	return _data;
+}
+
+
+void CharacterData::setNodeValue(const XMLString& value)
+{
+	setData(value);
+}
+
+
+XMLString CharacterData::trimmedData() const
+{
+	return Poco::trim(_data);
+}
+
+
+} } // namespace Poco::XML