lib/backupfile.h

   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    59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_ */