Utilities.hpp

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#ifndef __UTILITIES_HPP
#define __UTILITIES_HPP

// //////////////////////////////////////////////////////////////////////
// Import section
// //////////////////////////////////////////////////////////////////////
// STL
#include <iosfwd>
#include <sstream>
#include <string>

class Utilities{
    public:
    void toStream (std::ostream& ioOut) const {
      ioOut << describe();
    }
    private:
    virtual std::string describe() const = 0;
};

template <class charT, class traits>
inline
std::basic_ostream<charT, traits>&
operator<< (std::basic_ostream<charT, traits>& ioOut,
            const Utilities& iUtils) {
  std::basic_ostringstream<charT,traits> ostr;
  ostr.copyfmt (ioOut);
  ostr.width (0);

  // Fill string stream
  iUtils.toStream (ostr);

  // Print string stream
  ioOut << ostr.str();

  return ioOut;
}

#endif //__UTILITIES_HPP