Log.h

/*
 * Gamedev Framework (gf)
 * Copyright (C) 2016-2018 Julien Bernard
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */
#ifndef GF_LOG_H
#define GF_LOG_H

#include <cstdarg>
#include <cstdlib>
#include <map>

#include "Portability.h"

namespace gf {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
inline namespace v1 {
#endif

  class GF_API Log {
  public:
    Log() = delete;

    enum Level : int {
      Debug,  
      Info,   
      Warn,   
      Error,  
      Fatal,  
    };

    static void setLevel(Level level);

    static void debug(const char *fmt, ...) GF_FORMAT(1, 2) {
      va_list ap;
      va_start(ap, fmt);
      log(Level::Debug, fmt, ap);
      va_end(ap);
    }

    static void info(const char *fmt, ...) GF_FORMAT(1, 2) {
      va_list ap;
      va_start(ap, fmt);
      log(Level::Info, fmt, ap);
      va_end(ap);
    }

    static void warning(const char *fmt, ...) GF_FORMAT(1, 2) {
      va_list ap;
      va_start(ap, fmt);
      log(Level::Warn, fmt, ap);
      va_end(ap);
    }

    static void error(const char *fmt, ...) GF_FORMAT(1, 2) {
      va_list ap;
      va_start(ap, fmt);
      log(Level::Error, fmt, ap);
      va_end(ap);
    }

    static void fatal(const char *fmt, ...) GF_FORMAT(1, 2) {
      va_list ap;
      va_start(ap, fmt);
      log(Level::Fatal, fmt, ap);
      va_end(ap);

      std::abort();
    }

  private:
    static Level s_level;

  private:
    static void log(Level level, const char *fmt, va_list ap);
  };

#ifndef DOXYGEN_SHOULD_SKIP_THIS
}
#endif
}

#endif // GF_LOG_H