SDL2Logger.hpp

/******************************************************************************
 
  nomlib - C++11 cross-platform game engine
 
Copyright (c) 2013, 2014 Jeffrey Carpenter <i8degrees@gmail.com>
All rights reserved.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
******************************************************************************/
#ifndef NOMLIB_CORE_SDL2_LOGGER_HPP
#define NOMLIB_CORE_SDL2_LOGGER_HPP
 
#include <sstream>
#include <string>
 
#include <SDL.h>

enum
{
  NOM = SDL_LOG_CATEGORY_CUSTOM,

  NOM_LOG_CATEGORY_APPLICATION,

  NOM_LOG_CATEGORY_ERROR,

  NOM_LOG_CATEGORY_ASSERT,

  NOM_LOG_CATEGORY_SYSTEM,

  NOM_LOG_CATEGORY_AUDIO,

  NOM_LOG_CATEGORY_VIDEO,

  NOM_LOG_CATEGORY_RENDER,

  NOM_LOG_CATEGORY_ACTION,

  NOM_LOG_CATEGORY_ACTION_PLAYER,

  NOM_LOG_CATEGORY_ACTION_QUEUE,

  NOM_LOG_CATEGORY_EVENT,

  NOM_LOG_CATEGORY_TEST,

  NOM_LOG_CATEGORY_GUI,

  NOM_LOG_CATEGORY_MEMORY,

  NOM_LOG_CATEGORY_MEMORY_TOTALS,

  NOM_LOG_CATEGORY_STATES,
 
  NOM_LOG_CATEGORY_TRACE,
  NOM_LOG_CATEGORY_TRACE_AUDIO,

  NOM_LOG_CATEGORY_TRACE_FONTS,
 
  NOM_LOG_CATEGORY_TRACE_VIDEO,
  NOM_LOG_CATEGORY_TRACE_RENDER,
  NOM_LOG_CATEGORY_TRACE_GUI,
  NOM_LOG_CATEGORY_TRACE_EVENT,

  NOM_LOG_CATEGORY_TRACE_STATES,
 
  NOM_LOG_CATEGORY_TRACE_SYSTEM,

  NOM_LOG_CATEGORY_TRACE_UNIT_TEST,

  NOM_LOG_CATEGORY_TRACE_ACTION,

  NOM_LOG_CATEGORY_CUSTOM
};
 
namespace nom {

enum LogPriority
{
  NOM_LOG_PRIORITY_VERBOSE = SDL_LOG_PRIORITY_VERBOSE,
  NOM_LOG_PRIORITY_DEBUG = SDL_LOG_PRIORITY_DEBUG,
  NOM_LOG_PRIORITY_INFO = SDL_LOG_PRIORITY_INFO,
  NOM_LOG_PRIORITY_WARN = SDL_LOG_PRIORITY_WARN,
  NOM_LOG_PRIORITY_ERROR = SDL_LOG_PRIORITY_ERROR,
  NOM_LOG_PRIORITY_CRITICAL = SDL_LOG_PRIORITY_CRITICAL,
  NOM_NUM_LOG_PRIORITIES = SDL_NUM_LOG_PRIORITIES
};
 
namespace priv {

void log_message( void* ptr, int cat, SDL_LogPriority prio, const char* msg );
 
} // namespace priv

template<typename Type>
void write_debug_output( std::ostream& out, const Type& f )
{
  out << f;
}

class SDL2Logger
{
  public:
    typedef SDL2Logger self_type;

    static const std::string priority_prefixes_[NOM_NUM_LOG_PRIORITIES];

    static bool initialized( void );

    static void initialize();

    SDL2Logger();

    SDL2Logger( int cat, nom::LogPriority prio );

    ~SDL2Logger();

    template <typename Type, typename ... Args>
    void write( const Type& f, const Args& ... rest )
    {
      nom::write_debug_output( this->output_stream(), f );
 
      this->write( " " );
 
      this->write( rest... );
    }

    template <typename Type>
    void write( const Type& f )
    {
      nom::write_debug_output( this->output_stream(), f );
    }
 
    void write(uint8_t f)
    {
      nom::write_debug_output(this->output_stream(), (int)f);
    }

    void write();

    int category() const;

    LogPriority priority() const;

    std::ostringstream& output_stream();

    static LogPriority priority( SDL_LogPriority prio );

    static SDL_LogPriority SDL_priority( LogPriority prio );

    static void set_logging_priorities( LogPriority prio );

    static void set_logging_priority( int cat, LogPriority prio );
 
  private:
    SDL2Logger( const self_type& rhs ) = delete;

    self_type& operator =( const self_type& rhs ) = delete;

    int category_;

    nom::LogPriority priority_;

    std::ostringstream os_;

    static bool initialized_;
};
 
} // namespace nom
 
#endif // include guard defined