source: libcf++/trunk/include/cf/formatter.hpp@ 4

/**
 * @file formatter.hpp
 * @author myusgun@gmail.com
 * @brief Formatter
 */
#ifndef __formatter_hpp__
#define __formatter_hpp__

#include <sstream>
#include <string>

/**
 * make string using Formatter
 * @see Formatter
 */
#define STR(_x) (cf::formatter() << _x).str()

namespace cf
{
    /**
     * a wrapper-class of std::ostringstream for temporary instance
     * @see STR() macro
     * @remarks http://stackoverflow.com/questions/303562/c-format-macro-inline-ostringstream
     */
    class formatter
    {
    private:
        std::ostringstream mOSS;

    public:
        template<typename T>
        formatter & operator << (const T & v)
        {
            mOSS << v;
            return *this;
        }

        formatter & operator << (cf::char_t * v)
        {
            mOSS << (v ? v : "null");
            return *this;
        }

        formatter & operator << (const cf::char_t * v)
        {
            mOSS << (v ? v : "null");
            return *this;
        }

        std::string str()
        {
            return mOSS.str();
        }
    };
}

#endif // #ifndef __formatter_hpp__