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
   25: extern "C" {
   26: # endif
   27: 
   28: 
   29: /* When to make backup files. */
   30: enum 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: 
   49: extern char const *simple_backup_suffix;
   50: 
   51: char *find_backup_file_name (char const *, enum backup_type);
   52: enum backup_type get_version (char const *context, char const *arg);
   53: enum backup_type xget_version (char const *context, char const *arg);
   54: void addext (char *, char const *, int);
   55: 
   56: 
   57: # ifdef __cplusplus
   58: }
   59: # endif
   60: 
   61: #endif /* ! BACKUPFILE_H_ */