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include Grew_types

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open Printf
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open Log
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open Dep2pict
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open Grew_utils
open Grew_graph
open Grew_rule
open Grew_grs

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open Grew_parser
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open Grew_html
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exception File_dont_exists of string

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exception Parsing_err of string
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exception Build of string * (string * int) option
exception Run of string * (string * int) option
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exception Bug of string * (string * int) option
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type grs = Grs.t
type gr = Instance.t
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type rew_history = Rewrite_history.t
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let is_empty = Rewrite_history.is_empty

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let empty_grs = Grs.empty

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let set_timeout t = Timeout.timeout := t

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let load_grs ?doc_output_dir file =
  if not (Sys.file_exists file)
  then raise (File_dont_exists file)
  else
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    try
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      let grs_ast = Grew_parser.grs_of_file file in
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      let grs = Grs.build grs_ast in
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      (match doc_output_dir with
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        | None -> ()
        | Some dir -> 
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          Html.proceed file dir grs_ast;
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          (* draw pattern graphs for all rules and all filters *)
          let fct module_ rule_ = 
            let dep_code = Rule.to_dep rule_ in
            let dep_svg_file = sprintf "%s/%s_%s-patt.png" dir module_ (Rule.get_name rule_) in
            ignore (Dep2pict.fromDepStringToPng dep_code dep_svg_file) in
          Grs.rule_iter fct grs;
          Grs.filter_iter fct grs
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      );
      grs
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    with
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    | Grew_parser.Parse_error (msg,Some (sub_file,l)) -> 
        raise (Parsing_err (sprintf "[file:%s, line:%d] %s" sub_file l msg))
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    | Grew_parser.Parse_error (msg,None) -> 
        raise (Parsing_err (sprintf "[file:%s] %s" file msg))
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    | Error.Build (msg,loc) -> raise (Build (msg,loc))
    | Error.Bug (msg, loc) -> raise (Bug (msg,loc))
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    | exc -> raise (Bug (sprintf "[Libgrew.load_grs] UNCATCHED EXCEPTION: %s" (Printexc.to_string exc), None))
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let to_sentence ?main_feat gr =
  let graph = gr.Instance.graph in
  G_graph.to_sentence ?main_feat graph
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let get_sequence_names grs = Grs.sequence_names grs
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let empty_gr = Instance.empty

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let load_gr file =
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  if (Sys.file_exists file) then (
    try
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      let gr_ast = Grew_parser.gr_of_file file in
      Instance.build gr_ast
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    with
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    | Grew_parser.Parse_error (msg,Some (sub_file,l)) -> 
        raise (Parsing_err (sprintf "[file:%s, line:%d] %s" sub_file l msg))
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    | Grew_parser.Parse_error (msg,None) -> 
        raise (Parsing_err (sprintf "[file:%s] %s" file msg))
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    | Error.Build (msg,loc) -> raise (Build (msg,loc))
    | Error.Bug (msg, loc) -> raise (Bug (msg,loc))
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    | exc -> raise (Bug (sprintf "[Libgrew.load_gr] UNCATCHED EXCEPTION: %s" (Printexc.to_string exc), None))
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   ) else (
    raise (File_dont_exists file)
   )
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let load_conll file =
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  try
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    (* let lines = File.read file in *)
    (* Instance.of_conll (List.map Conll.parse lines) *)
    Instance.of_conll ~loc:(file,-1) (Conll.load file)
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  with
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    | Grew_parser.Parse_error (msg,Some (sub_file,l)) -> 
        raise (Parsing_err (sprintf "[file:%s, line:%d] %s" sub_file l msg))
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    | Grew_parser.Parse_error (msg,None) -> 
        raise (Parsing_err (sprintf "[file:%s] %s" file msg))
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  | Error.Build (msg,loc) -> raise (Build (msg,loc))
  | Error.Bug (msg, loc) -> raise (Bug (msg,loc))
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  | exc -> raise (Bug (sprintf "[Libgrew.load_conll] UNCATCHED EXCEPTION: %s" (Printexc.to_string exc), None))
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let load_graph file = 
  if Filename.check_suffix file ".gr" 
  then load_gr file
  else if Filename.check_suffix file ".conll"
  then load_conll file
  else
    begin
      Log.fwarning "Unknown file format for input graph '%s', try to guess..." file;
      try load_gr file with
        Parsing_err _ -> 
          try load_conll file with
            Parsing_err _ ->
              Log.fcritical "[Libgrew.load_graph] Cannot guess input file format of file '%s'. Use .gr or .conll file extension" file
    end

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let rewrite ~gr ~grs ~seq = 
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  try Grs.rewrite grs seq gr
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  with
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  | Error.Run (msg,loc) -> raise (Run (msg,loc))
  | Error.Bug (msg, loc) -> raise (Bug (msg,loc))
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  | exc -> raise (Bug (sprintf "[Libgrew.rewrite] UNCATCHED EXCEPTION: %s" (Printexc.to_string exc), None))
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let display ~gr ~grs ~seq =
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  try Grs.build_rew_display grs seq gr
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  with
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  | Error.Run (msg,loc) -> raise (Run (msg,loc))
  | Error.Bug (msg, loc) -> raise (Bug (msg,loc))
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  | Error.Build (msg, loc) -> raise (Build (msg,loc))
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  | exc -> raise (Bug (sprintf "[Libgrew.display] UNCATCHED EXCEPTION: %s" (Printexc.to_string exc), None))
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let write_stat filename rew_hist = Gr_stat.save filename (Gr_stat.from_rew_history rew_hist) 

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let save_index ~dirname ~base_names =
  let out_ch = open_out (Filename.concat dirname "index") in
  List.iter (fun f -> fprintf out_ch "%s\n" f) base_names;
  close_out out_ch

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let save_gr base rew_hist = Rewrite_history.save_gr base rew_hist

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let write_html 
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    ?(no_init=false)
    ?(out_gr=false)
    ?main_feat 
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    ~header
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    ~graph_file
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    rew_hist
    output_base =
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IFDEF DEP2PICT THEN
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  ignore (
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  Rewrite_history.save_html 
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    ?main_feat
    ~out_gr
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    ~init_graph: (not no_init)
    ~header
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    ~graph_file
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    output_base rew_hist
    )
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ELSE
    Log.critical "[write_html] The \"libcaml-grew\" library is compiled without Dep2pict"
ENDIF
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let error_html 
    ?(no_init=false) ?main_feat 
    ~header
    msg ?init
    output_base =
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IFDEF DEP2PICT THEN
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  ignore (
  Rewrite_history.error_html 
    ?main_feat 
    ~init_graph: (not no_init)
    ~header
    output_base msg init
    )
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ELSE
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    Log.critical "[error_html] The \"libcaml-grew\" library is compiled without Dep2pict"
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ENDIF
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let make_index ~title ~grs_file ~html ~grs ~seq ~input_dir ~output_dir ~base_names  =
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  let init = Corpus_stat.empty grs seq in
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  let corpus_stat =
    List.fold_left
      (fun acc base_name -> 
        Corpus_stat.add_gr_stat base_name (Gr_stat.load (Filename.concat output_dir (base_name^".stat"))) acc
      ) init base_names in
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  Corpus_stat.save_html title grs_file input_dir output_dir corpus_stat
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let get_css_file = Filename.concat DATA_DIR "style.css"

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let graph_of_instance instance = instance.Instance.graph