(************************************************************************)
(* This file is part of SKS.  SKS is free software; you can
   redistribute it and/or modify it under the terms of the GNU General
   Public License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
   USA *)
(***********************************************************************)

open StdLabels
open MoreLabels
open Printf
open Common
open Packet

module Kdb = Keydb.Unsafe

let settings = {
  Keydb.withtxn = !Settings.transactions;
  Keydb.cache_bytes = !Settings.cache_bytes;
  Keydb.pagesize = !Settings.pagesize;
  Keydb.dbdir = "/usr/share/keyfiles/sks_blackhole/KDB";
  Keydb.dumpdir = "/usr/share/keyfiles/sks_blackhole/dump";
}
let () = Kdb.open_dbs settings

let rec strip_opt list = match list with
    [] -> []
  | None::tl -> strip_opt tl
  | (Some hd)::tl -> hd::(strip_opt tl)


let rec beginning n list = 
  if n = 0 then []
  else match list with
      [] -> []
    | hd::tl -> hd::(beginning (n-1) tl)

let merge_all keys = 
  let keys = Array.to_list keys in
  match keys with
      hd::tl ->
	List.fold_left ~init:hd tl 
	~f:(fun key1 key2 -> match KeyMerge.merge key1 key2 with
		None -> failwith "hit unparseable key"
	      | Some key -> key)
    | [] -> failwith "List too short"

let mergeable key1 key2 = 
  match KeyMerge.merge key1 key2 with
      None -> false
    | Some key -> true

exception KeyFail of string

let ctr = ref 0 
let click () = 
  incr ctr;
  if !ctr mod 100 = 0 
  then (
    printf "%d\n" !ctr;
    flush stdout;
  )