Add a copy file routine

Add io_file_cp() which can be used to copy an existing source file to
another location. We will need this for our new hash-based note file
names.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/calcurse.h b/src/calcurse.h
index b1b8e75..8b82422 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -693,6 +693,7 @@ void             io_set_lock (void);
 unsigned         io_dump_pid (char *);
 unsigned         io_get_pid (char *);
 int              io_file_is_empty (char *);
+int              io_file_cp (const char *, const char *);
 
 /* keys.c */
 void      keys_init (void);