+gchar *ev_tmp_filename (const char *prefix);
+void ev_tmp_filename_unlink (const gchar *filename);
+void ev_tmp_uri_unlink (const gchar *uri);
+
+gboolean ev_xfer_uri_simple (const char *from,
+ const char *to,
+ GError **error);
+
+gchar *ev_file_uncompress (const gchar *uri,
+ EvCompressionType type,
+ GError **error);
+gchar *ev_file_compress (const gchar *uri,
+ EvCompressionType type,
+ GError **error);