1 /* backupfile.h -- declarations for making Emacs style backup file names 2 Copyright (C) 1990-1992, 1997-1999, 2001-2003 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; see the file COPYING. 16 If not, write to the Free Software Foundation, 17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19 #ifndef BACKUPFILE_H_ 20 # define BACKUPFILE_H_ 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 27 /* When to make backup files. */ 28 enum backup_type 29 { 30 /* Never make backups. */ 31 none, 32 33 /* Make simple backups of every file. */ 34 simple, 35 36 /* Make numbered backups of files that already have numbered backups, 37 and simple backups of the others. */ 38 numbered_existing, 39 40 /* Make numbered backups of every file. */ 41 numbered 42 }; 43 44 # define VALID_BACKUP_TYPE(Type) \ 45 ((Type) == none \ 46 || (Type) == simple \ 47 || (Type) == numbered_existing \ 48 || (Type) == numbered) 49 50 extern DLL_VARIABLE char const *simple_backup_suffix; 51 52 extern char *find_backup_file_name (char const *file, 53 enum backup_type backup_type); 54 extern enum backup_type get_version (char const *context, char const *arg); 55 extern enum backup_type xget_version (char const *context, char const *arg); 56 extern void addext (char *filename, char const *ext, char e); 57 58 59 #ifdef __cplusplus 60 } 61 #endif 62 63 #endif /* ! BACKUPFILE_H_ */ 64