1208 struct text_file_backend::implementation  struct in boost::sinks::text_file_backend
1211     std::ios_base::openmode m_FileOpenMode;
1214     filesystem::path m_FileNamePattern;
1216     filesystem::path m_StorageDir;
1218     boost::log::aux::light_function< path_string_type (unsigned int) > m_FileNameGenerator;
1221     filesystem::path m_TargetFileNamePattern;
1223     filesystem::path m_TargetStorageDir;
1225     boost::log::aux::light_function< path_string_type (unsigned int) > m_TargetFileNameGenerator;
1228     unsigned int m_FileCounter;
1231     filesystem::path m_FileName;
1233     filesystem::ofstream m_File;
1235     uintmax_t m_CharactersWritten;
1238     shared_ptr< file::collector > m_pFileCollector;
1240     open_handler_type m_OpenHandler;
1242     close_handler_type m_CloseHandler;
1245     uintmax_t m_FileRotationSize;
1247     time_based_rotation_predicate m_TimeBasedRotation;
1249     auto_newline_mode m_AutoNewlineMode;
1251     bool m_AutoFlush;
1253     bool m_FinalRotationEnabled;
1255 …implementation(uintmax_t rotation_size, auto_newline_mode auto_newline, bool auto_flush, bool enab…  in implementation()  function