let update_command_line () =
  let last = (Array.length Sys.argv) - 2 in
  Sys.argv.(0) <- Sys.argv.(0) ^ " " ^ Sys.argv.(1);
  for i=1 to last do
    Sys.argv.(i) <- Sys.argv.(i+1)
  done;
  Sys.argv.(last+1) <- "--"



let () =
  let open Command_line in
  begin
    set_header_doc (Sys.argv.(0) ^ " - QMC=Chem command");
    set_description_doc "Driver for subcommands.";
    set_specs []
  end; 

  if Array.length Sys.argv < 2 then
    (Command_line.help (); failwith "Inconsistent command line");

  let command = Sys.argv.(1) in
  update_command_line ();
  Command_line.reset ();

  match command with
  | "debug"  -> let open Qmcchem_debug  in command ()
  | "edit"   -> let open Qmcchem_edit   in command ()
  | "info"   -> let open Qmcchem_info   in command ()
  | "md5"    -> let open Qmcchem_md5    in command ()
  | "result" -> let open Qmcchem_result in command ()
  | "run"    -> let open Qmcchem_run    in command ()
  | "stop"   -> let open Qmcchem_stop   in command ()
  | _        -> (Command_line.help () ; failwith "Inconsistent command line")