maint: update copyright

[gnulib.git] / lib / backupfile.h

diff --git a/lib/backupfile.h b/lib/backupfile.h
index 5d09d36..e2034c7 100644 (file)
--- a/lib/backupfile.h
+++ b/lib/backupfile.h
@@ -1,10 +1,12 @@
 /* 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, 2009-2014 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
@@ -12,31 +14,46 @@
    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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 (const char *file);
-#else
-char *find_backup_file_name ();
-#endif
+#endif /* ! BACKUPFILE_H_ */