1/* backupfile.h -- declarations for making Emacs style backup file names 2 Copyright (C) 1990-1992, 1997-1999 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 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 18 19#ifndef BACKUPFILE_H_ 20# define BACKUPFILE_H_ 21 22/* When to make backup files. */ 23enum backup_type 24{ 25 /* Never make backups. */ 26 none, 27 28 /* Make simple backups of every file. */ 29 simple, 30 31 /* Make numbered backups of files that already have numbered backups, 32 and simple backups of the others. */ 33 numbered_existing, 34 35 /* Make numbered backups of every file. */ 36 numbered 37}; 38 39# define VALID_BACKUP_TYPE(Type) \ 40 ((Type) == none \ 41 || (Type) == simple \ 42 || (Type) == numbered_existing \ 43 || (Type) == numbered) 44 45extern char const *simple_backup_suffix; 46 47# ifndef PARAMS 48# if defined PROTOTYPES || (defined __STDC__ && __STDC__) 49# define PARAMS(Args) Args 50# else 51# define PARAMS(Args) () 52# endif 53# endif 54 55char *find_backup_file_name PARAMS ((char const *, enum backup_type)); 56enum backup_type get_version PARAMS ((char const *context, char const *arg)); 57enum backup_type xget_version PARAMS ((char const *context, char const *arg)); 58void addext PARAMS ((char *, char const *, int)); 59 60#endif /* ! BACKUPFILE_H_ */ 61