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/Data/src/SimpleRowFormatter.cpp

@@ -0,0 +1,113 @@
+//
+// RowFormatter.cpp
+//
+// Library: Data
+// Package: DataCore
+// Module:  RowFormatter
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Data/SimpleRowFormatter.h"
+#include "Poco/Exception.h"
+#include <iomanip>
+
+
+namespace Poco {
+namespace Data {
+
+
+SimpleRowFormatter::SimpleRowFormatter(std::streamsize columnWidth, std::streamsize spacing):
+	_colWidth(columnWidth), _spacing(spacing), _rowCount(0)
+{
+}
+
+
+SimpleRowFormatter::SimpleRowFormatter(const SimpleRowFormatter& other):
+	RowFormatter(other.prefix(), other.postfix()),
+	_colWidth(other._colWidth),
+	_spacing(other._spacing),
+	_rowCount(0)
+{
+}
+
+
+SimpleRowFormatter::~SimpleRowFormatter()
+{
+}
+
+
+SimpleRowFormatter& SimpleRowFormatter::operator = (const SimpleRowFormatter& row)
+{
+	SimpleRowFormatter tmp(row);
+	swap(tmp);
+	return *this;
+}
+
+
+void SimpleRowFormatter::swap(SimpleRowFormatter& other)
+{
+	using std::swap;
+
+	setPrefix(other.prefix());
+	setPostfix(other.postfix());
+	swap(_colWidth, other._colWidth);
+	swap(_spacing, other._spacing);
+}
+
+
+std::string& SimpleRowFormatter::formatNames(const NameVecPtr pNames, std::string& formattedNames)
+{
+	_rowCount = 0;
+
+	std::ostringstream str;
+	std::string line(std::string::size_type(pNames->size()*_colWidth + (pNames->size() - 1)*_spacing), '-');
+	std::string space(_spacing, ' ');
+	NameVec::const_iterator it = pNames->begin();
+	NameVec::const_iterator end = pNames->end();
+	for (; it != end; ++it)
+	{
+		if (it != pNames->begin()) str << space;
+		str << std::left << std::setw(_colWidth) << *it;
+	}
+	str << std::endl << line << std::endl;
+
+	return formattedNames = str.str();
+}
+
+
+std::string& SimpleRowFormatter::formatValues(const ValueVec& vals, std::string& formattedValues)
+{
+	std::ostringstream str;
+	std::string space(_spacing, ' ');
+	ValueVec::const_iterator it = vals.begin();
+	ValueVec::const_iterator end = vals.end();
+	for (; it != end; ++it)
+	{
+		if (it != vals.begin()) str << space;
+		if (it->isNumeric())
+		{
+			str << std::right 
+				<< std::fixed
+				<< std::setprecision(2);
+		}
+		else str << std::left;
+
+		if (!it->isEmpty())
+			str << std::setw(_colWidth) << it->convert<std::string>();
+		else
+			str << std::setw(_colWidth) << "null";
+	}
+	str << std::endl;
+
+	++_rowCount;
+
+	return formattedValues = str.str();
+}
+
+
+} } // namespace Poco::Data