/*
* $OpenBSD: backupfile.h,v 1.6 2003/07/28 18:35:36 otto Exp $
* $DragonFly: src/usr.bin/patch/backupfile.h,v 1.3 2007/09/29 23:11:10 swildner Exp $
* $NetBSD: backupfile.h,v 1.7 2021/02/19 17:46:53 nia Exp $
*/

/*
* backupfile.h -- declarations for making Emacs style backup file names
* Copyright (C) 1990 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* without restriction.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
*/

/* When to make backup files. */
enum backup_type {
       undefined,

       /* Never make backups. */
       none,

       /* Make simple backups of every file. */
       simple,

       /*
        * Make numbered backups of files that already have numbered backups,
        * and simple backups of the others.
        */
       numbered_existing,

       /* Make numbered backups of every file. */
       numbered
};

extern enum backup_type backup_type;
extern const char       *simple_backup_suffix;

char            *find_backup_file_name(const char *file);
enum backup_type get_version(const char *version);