src/logger.hh


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// -*- mode: c++; c-basic-offset: 2; -*-

#ifndef LOGGER_HH
#define LOGGER_HH

#include <string>

class Logger {
public:
  virtual ~Logger() {}

  enum Level {
    ERR,
    WARN,
    INFO,
    DBG
  };

  static Logger* create_stderr();
  static Logger* create_syslog(std::string const& name);
  static Logger* create_file(std::string const& path);
  static Logger* null();

  virtual void out(Level lvl, char const* format, ...)
#ifdef HAVE_FUNC_ATTRIBUTE_FORMAT
    __attribute__ ((format (printf, 3, 4)))
#endif
    = 0;

protected:
  Logger() {}
  Logger(Logger const&) = delete;
};

#endif  // LOGGER_HH