/* 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
+ Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2013 Free Software
+ Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef BACKUPFILE_H_
+# define BACKUPFILE_H_
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
/* When to make backup files. */
enum backup_type
{
/* Never make backups. */
- none,
+ no_backups,
/* Make simple backups of every file. */
- simple,
+ simple_backups,
/* Make numbered backups of files that already have numbered backups,
and simple backups of the others. */
- numbered_existing,
+ numbered_existing_backups,
/* Make numbered backups of every file. */
- numbered
+ numbered_backups
};
-extern enum backup_type backup_type;
-extern char *simple_backup_suffix;
+# define VALID_BACKUP_TYPE(Type) \
+ ((unsigned int) (Type) <= numbered_backups)
+
+extern char const *simple_backup_suffix;
+
+char *find_backup_file_name (char const *, enum backup_type);
+enum backup_type get_version (char const *context, char const *arg);
+enum backup_type xget_version (char const *context, char const *arg);
+void addext (char *, char const *, int);
+
+
+# ifdef __cplusplus
+}
+# endif
-#ifdef __STDC__
-char *find_backup_file_name (char *file);
-#else
-char *find_backup_file_name ();
-#endif
+#endif /* ! BACKUPFILE_H_ */