1/* backupfile.h -- declarations for making Emacs style backup file names 2 3 Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2010 Free Software 4 Foundation, Inc. 5 6 This program is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19#ifndef BACKUPFILE_H_ 20# define BACKUPFILE_H_ 21 22# ifdef __cplusplus 23extern "C" { 24# endif 25 26 27/* When to make backup files. */ 28enum backup_type 29{ 30 /* Never make backups. */ 31 no_backups, 32 33 /* Make simple backups of every file. */ 34 simple_backups, 35 36 /* Make numbered backups of files that already have numbered backups, 37 and simple backups of the others. */ 38 numbered_existing_backups, 39 40 /* Make numbered backups of every file. */ 41 numbered_backups 42}; 43 44# define VALID_BACKUP_TYPE(Type) \ 45 ((unsigned int) (Type) <= numbered_backups) 46 47extern char const *simple_backup_suffix; 48 49char *find_backup_file_name (char const *, enum backup_type); 50enum backup_type get_version (char const *context, char const *arg); 51enum backup_type xget_version (char const *context, char const *arg); 52void addext (char *, char const *, int); 53 54 55# ifdef __cplusplus 56} 57# endif 58 59#endif /* ! BACKUPFILE_H_ */ 60