Add extern "C" for C++.

[gnulib.git] / lib / backupfile.h

diff --git a/lib/backupfile.h b/lib/backupfile.h
index 94d6254..346b60c 100644 (file)
--- a/lib/backupfile.h
+++ b/lib/backupfile.h
@@ -1,5 +1,7 @@
 /* backupfile.h -- declarations for making Emacs style backup file names
-   Copyright (C) 1990 Free Software Foundation, Inc.
+
+   Copyright (C) 1990, 1991, 1992, 1997, 1998, 1999, 2003, 2004 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
@@ -12,8 +14,17 @@
    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; see the file COPYING.
+   If not, write to the Free Software Foundation,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef BACKUPFILE_H_
+# define BACKUPFILE_H_
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 
 /* When to make backup files. */
 enum backup_type
@@ -32,11 +43,22 @@ enum backup_type
   numbered
 };
 
-extern enum backup_type backup_type;
-extern char *simple_backup_suffix;
+# define VALID_BACKUP_TYPE(Type)       \
+  ((Type) == none                      \
+   || (Type) == simple                 \
+   || (Type) == numbered_existing      \
+   || (Type) == numbered)
+
+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_ */