1/* backupfile.h -- declarations for making Emacs style backup file names 2 3 Copyright (C) 1990, 1991, 1992, 1997, 1998, 1999, 2003, 2004 Free 4 Software 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 2, or (at your option) 9 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; see the file COPYING. 18 If not, write to the Free Software Foundation, 19 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21#ifndef BACKUPFILE_H_ 22# define BACKUPFILE_H_ 23 24# ifdef __cplusplus 25extern "C" { 26# endif 27 28 29/* When to make backup files. */ 30enum backup_type 31{ 32 /* Never make backups. */ 33 no_backups, 34 35 /* Make simple backups of every file. */ 36 simple_backups, 37 38 /* Make numbered backups of files that already have numbered backups, 39 and simple backups of the others. */ 40 numbered_existing_backups, 41 42 /* Make numbered backups of every file. */ 43 numbered_backups 44}; 45 46# define VALID_BACKUP_TYPE(Type) \ 47 ((unsigned int) (Type) <= numbered_backups) 48 49extern char const *simple_backup_suffix; 50 51char *find_backup_file_name (char const *, enum backup_type); 52enum backup_type get_version (char const *context, char const *arg); 53enum backup_type xget_version (char const *context, char const *arg); 54void addext (char *, char const *, int); 55 56 57# ifdef __cplusplus 58} 59# endif 60 61#endif /* ! BACKUPFILE_H_ */ 62