+let iter_buf_size = 10240
+
+let iter_file_data f fname =
+ let ic = open_in fname in
+ let buf = String.create iter_buf_size in
+ try
+ while true do
+ let bytes = input ic buf 0 iter_buf_size in
+ if bytes = 0 then raise End_of_file;
+ f (String.sub buf 0 bytes)
+ done
+ with End_of_file -> close_in ic
+