CategoryStream.hh

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/*
 * CategoryStream.hh
 *
 * Copyright 2001, LifeLine Networks BV (www.lifeline.nl). All rights reserved.
 * Copyright 2001, Bastiaan Bakker. All rights reserved.
 *
 * See the COPYING file for the terms of usage and distribution.
 */
 
#ifndef _LOG4SHIB_CATEGORYSTREAM_HH
#define _LOG4SHIB_CATEGORYSTREAM_HH
 
#include <log4shib/Portability.hh>
#include <log4shib/Priority.hh>
#ifdef LOG4SHIB_HAVE_SSTREAM
#include <sstream>
#endif
 
namespace log4shib {
 
    class LOG4SHIB_EXPORT Category;
    class LOG4SHIB_EXPORT CategoryStream;

    LOG4SHIB_EXPORT CategoryStream& eol (CategoryStream& os);

    class LOG4SHIB_EXPORT CategoryStream {
        public:

        CategoryStream(Category& category, Priority::Value priority);

        ~CategoryStream();
        
        inline Category& getCategory() const { return _category; };

        inline Priority::Value getPriority() const throw() { 
            return _priority; 
        };

        void flush();

        template<typename T> CategoryStream& operator<<(const T& t) {
            if (getPriority() != Priority::NOTSET) {
                if (!_buffer) {
                    if (!(_buffer = new std::ostringstream)) {
                        // XXX help help help
                    }
                }
                (*_buffer) << t;
            }
            return *this;
        }
        
        private:
        Category& _category;
        Priority::Value _priority;
        std::ostringstream* _buffer;
 
     public:
        typedef CategoryStream& (*cspf) (CategoryStream&);
        CategoryStream& operator << (cspf);
        LOG4SHIB_EXPORT friend CategoryStream& eol (CategoryStream& os);
    };
 
}
#endif // _LOG4SHIB_CATEGORYSTREAM_HH