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


let () =
  let open Command_line in
  begin
    set_header_doc (Sys.argv.(0) ^ " - QMC=Chem command");
    set_description_doc "Driver for subcommands.";
    [
      anonymous "COMMAND"   Mandatory "[debug|edit|info|md5|result|run|stop]";
      anonymous "EZFIO_DIR" Mandatory "EZFIO directory";
    ]
    |> set_specs
  end; 

  let command = 
    match Command_line.anon_args () with
    | command :: ezfio_file :: [] -> command
    | _  -> (Command_line.help () ; failwith "Inconsistent command line")
  in

  update_command_line ();

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