(***********************************************************************)
(*                                                                     *)
(*                               TAToo                                 *)
(*                                                                     *)
(*                     Kim Nguyen, LRI UMR8623                         *)
(*                   Université Paris-Sud & CNRS                       *)
(*                                                                     *)
(*  Copyright 2010-2012 Université Paris-Sud and Centre National de la *)
(*  Recherche Scientifique. All rights reserved.  This file is         *)
(*  distributed under the terms of the GNU Lesser General Public       *)
(*  License, with the special exception on linking described in file   *)
(*  ../LICENSE.                                                        *)
(*                                                                     *)
(***********************************************************************)


(** use: xml_file "XPath querie"
    or : xml_file -f XPath_querie_file
    only the first line of XPath_querie_file is read 
*)

open Format

let doc () =
  let fd = open_in Sys.argv.(1) in
  let d = Tree.load_xml_file fd in
  close_in fd;
  fprintf err_formatter "Parse Tree OK ! ";
  d


let query () = 
  let arg2 = Sys.argv.(2) in
  if arg2 = "-f"
  then  let fq = open_in Sys.argv.(3) in
        let q = XPath.parse_file fq in
        close_in fq;
        fprintf err_formatter "Parse query OK ! ";
        q
  else let q = XPath.parse_string arg2 in
       fprintf err_formatter "Parse query OK ! ";
       q

let build_asta query =
  let asta = Compil.trans query in
  fprintf err_formatter "Compil OK ! ";
  asta

let compute_run doc query = 
  let run = Run.compute doc query in
  fprintf err_formatter "Run OK ! \n";
  run

let () =
  let doc = doc () in
  let query = query () in
  let asta = build_asta query in
  let run = compute_run doc asta in
  fprintf err_formatter "@[<v 0>##### Query #####@.  %a@]\n"
    XPath.Ast.print query;
  output_string stderr "\n##### Doc #####\n";
  Tree.print_xml stderr doc (Tree.root doc);
  output_string stderr "\n";
  Asta.print err_formatter asta;
  Run.print err_formatter run;
  output_string stderr "\n  # Doc: \n";
  Tree.print_xml_preorder stderr doc (Tree.root doc);
  exit 0