--- /dev/null
+(* Copyright (C) 2002, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM 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.
+ *
+ * HELM 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 HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://cs.unibo.it/helm/.
+ *)
+
+open Http_types ;;
+
+let debug = true;;
+let debug_print s = if debug then prerr_endline s;;
+Http_common.debug := true;;
+(* Http_common.debug := true;; *)
+
+ (** accepted HTTP servers for ask_uwobo method forwarding *)
+let valid_servers =
+ [ "mowgli.cs.unibo.it:58080" ; "mowgli.cs.unibo.it" ; "localhost:58080" ];;
+
+let mqi_flags = [] (* default MathQL interpreter options *)
+
+open Printf;;
+
+let daemon_name = "Search Engine";;
+let default_port = 58085;;
+let port_env_var = "SEARCH_ENGINE_PORT";;
+
+let pages_dir =
+ try
+ Sys.getenv "SEARCH_ENGINE_HTML_DIR"
+ with Not_found -> "html" (* relative to searchEngine's document root *)
+;;
+let interactive_user_uri_choice_TPL = pages_dir ^ "/templateambigpdq1.html";;
+let interactive_interpretation_choice_TPL =
+ pages_dir ^ "/templateambigpdq2.html";;
+let constraints_choice_TPL = pages_dir ^ "/constraints_choice_template.html";;
+let final_results_TPL = pages_dir ^ "/templateambigpdq3.html";;
+
+exception Chat_unfinished
+
+ (* build a bool from a 1-character-string *)
+let bool_of_string' = function
+ | "0" -> false
+ | "1" -> true
+ | s -> failwith ("Can't parse a boolean from string: " ^ s)
+;;
+
+ (* build an int option from a string *)
+let int_of_string' = function
+ | "_" -> None
+ | s ->
+ try
+ Some (int_of_string s)
+ with Failure "int_of_string" ->
+ failwith ("Can't parse an int option from string: " ^ s)
+;;
+
+let is_concl_pos pos =
+ pos = "http://www.cs.unibo.it/helm/schemas/schema-helm#MainConclusion"
+ or
+ pos = "http://www.cs.unibo.it/helm/schemas/schema-helm#InConclusion"
+;;
+
+let is_main_pos pos =
+ pos = "http://www.cs.unibo.it/helm/schemas/schema-helm#MainConclusion"
+ or
+ pos = "http://www.cs.unibo.it/helm/schemas/schema-helm#MainHypothesis"
+;;
+
+ (* HTML pretty printers for mquery_generator types *)
+
+let html_of_r_obj (uri, pos, depth) =
+ sprintf
+ "<tr><td><input type='checkbox' name='constr_obj' checked='on'/></td><td>%s</td><td>%s</td><td>%s</td></tr>"
+ uri (Str.string_after pos ((String.rindex pos '#') + 1))
+ (if is_main_pos pos then
+ sprintf "<input name='obj_depth' size='2' type='text' value='%s' />"
+ (match depth with Some i -> string_of_int i | None -> "")
+ else
+ "<input type=\"hidden\" name=\"obj_depth\" />")
+;;
+
+let html_of_r_rel (pos, depth) =
+ sprintf
+ "<tr><td><input type='checkbox' name='constr_rel' checked='on'/></td><td>%s</td><td><input name='rel_depth' size='2' type='text' value='%s' /></td></tr>"
+ pos (match depth with Some i -> string_of_int i | None -> "")
+;;
+
+let html_of_r_sort (pos, depth, sort) =
+ sprintf
+ "<tr><td><input type='checkbox' name='constr_sort' checked='on'/></td><td>%s</td><td>%s</td><td><input name='sort_depth' size='2' type='text' value='%s'/></td></tr>"
+ sort pos (match depth with Some i -> string_of_int i | None -> "")
+;;
+
+ (** pretty print a MathQL query result to an HELM theory file *)
+let theory_of_result result =
+ let results_no = List.length result in
+ if results_no > 0 then
+ let mode = if results_no > 10 then "linkonly" else "typeonly" in
+ let results =
+ let idx = ref (results_no + 1) in
+ List.fold_right
+ (fun (uri,attrs) i ->
+ decr idx ;
+ "<tr><td valign=\"top\">" ^ string_of_int !idx ^ ".</td><td><ht:OBJECT uri=\"" ^ uri ^ "\" mode=\"" ^ mode ^ "\"/></td></tr>" ^ i
+ ) result ""
+ in
+ "<h1>Query Results:</h1><table xmlns:ht=\"http://www.cs.unibo.it/helm/namespaces/helm-theory\">" ^ results ^ "</table>"
+ else
+ "<h1>Query Results:</h1><p>No results found!</p>"
+;;
+
+let pp_result result =
+ "<html xmlns:ht=\"http://www.cs.unibo.it/helm/namespaces/helm-theory\">\n<head><title>Query Results</title><style> A { text-decoration: none } </style></head>\n<body>" ^ theory_of_result result ^ "</body></html>"
+;;
+
+ (** chain application of Pcre substitutions *)
+let rec apply_substs substs line =
+ match substs with
+ | [] -> line
+ | (rex, templ) :: rest -> apply_substs rest (Pcre.replace ~rex ~templ line)
+ (** fold like function on files *)
+let fold_file f init fname =
+ let inchan = open_in fname in
+ let rec fold_lines' value =
+ try
+ let line = input_line inchan in
+ fold_lines' (f value line)
+ with End_of_file -> value
+ in
+ let res = (try fold_lines' init with e -> (close_in inchan; raise e)) in
+ close_in inchan;
+ res
+ (** iter like function on files *)
+let iter_file f = fold_file (fun _ line -> f line) ()
+
+let (title_tag_RE, choices_tag_RE, msg_tag_RE, id_to_uris_RE, id_RE,
+ interpretations_RE, interpretations_labels_RE, results_RE, new_aliases_RE,
+ form_RE, variables_initialization_RE)
+ =
+ (Pcre.regexp "@TITLE@", Pcre.regexp "@CHOICES@", Pcre.regexp "@MSG@",
+ Pcre.regexp "@ID_TO_URIS@", Pcre.regexp "@ID@",
+ Pcre.regexp "@INTERPRETATIONS@", Pcre.regexp "@INTERPRETATIONS_LABELS@",
+ Pcre.regexp "@RESULTS@", Pcre.regexp "@NEW_ALIASES@", Pcre.regexp "@FORM@",
+ Pcre.regexp "@VARIABLES_INITIALIZATION@")
+let server_and_port_url_RE = Pcre.regexp "^http://([^/]+)/.*$"
+
+exception NotAnInductiveDefinition
+
+let port =
+ try
+ int_of_string (Sys.getenv port_env_var)
+ with
+ | Not_found -> default_port
+ | Failure "int_of_string" ->
+ prerr_endline "Warning: invalid port, reverting to default";
+ default_port
+;;
+
+let pp_error = sprintf "<html><body><h1>Error: %s</h1></body></html>";;
+
+let bad_request body outchan =
+ Http_daemon.respond_error ~status:(`Client_error `Bad_request) ~body outchan
+;;
+
+let contype = "Content-Type", "text/html";;
+
+(* SEARCH ENGINE functions *)
+
+let whole_statement_universe =
+ ["http://www.cs.unibo.it/helm/schemas/schema-helm#MainConclusion" ;
+ "http://www.cs.unibo.it/helm/schemas/schema-helm#InConclusion" ;
+ "http://www.cs.unibo.it/helm/schemas/schema-helm#MainHypothesis" ;
+ "http://www.cs.unibo.it/helm/schemas/schema-helm#InHypothesis"]
+;;
+
+let only_conclusion_universe =
+ ["http://www.cs.unibo.it/helm/schemas/schema-helm#MainConclusion" ;
+ "http://www.cs.unibo.it/helm/schemas/schema-helm#InConclusion"]
+;;
+
+let refine_constraints (constr_obj, constr_rel, constr_sort) =
+ function
+ "/searchPattern" ->
+ whole_statement_universe,
+ (constr_obj, constr_rel, constr_sort),
+ (Some constr_obj, Some constr_rel, Some constr_sort)
+ | "/matchConclusion" ->
+ let constr_obj' =
+ List.map
+ (function (uri,pos,_) -> (uri,pos,None))
+ (List.filter
+ (function (uri,pos,depth) as constr -> is_concl_pos pos)
+ constr_obj)
+ in
+ only_conclusion_universe,
+ (*CSC: we must select the must constraints here!!! *)
+ (constr_obj',[],[]),(Some constr_obj', None, None)
+ | _ -> assert false
+in
+
+let get_constraints term =
+ function
+ "/locateInductivePrinciple" ->
+ let uri =
+ match term with
+ Cic.MutInd (uri,t,_) -> MQueryUtil.string_of_uriref (uri,[t])
+ | _ -> raise NotAnInductiveDefinition
+ in
+ let constr_obj =
+ [uri,"http://www.cs.unibo.it/helm/schemas/schema-helm#InHypothesis",
+ None ;
+ uri,"http://www.cs.unibo.it/helm/schemas/schema-helm#MainHypothesis",
+ Some 0
+ ]
+ in
+ let constr_rel =
+ ["http://www.cs.unibo.it/helm/schemas/schema-helm#MainConclusion",
+ None] in
+ let constr_sort =
+ ["http://www.cs.unibo.it/helm/schemas/schema-helm#MainHypothesis",
+ Some 1, "http://www.cs.unibo.it/helm/schemas/schema-helm#Prop"]
+ in
+ whole_statement_universe,
+ (constr_obj, constr_rel, constr_sort), (None,None,None)
+ | req_path ->
+ let must = MQueryLevels2.get_constraints term in
+ refine_constraints must req_path
+in
+
+(*
+ format:
+ <must_obj> ':' <must_rel> ':' <must_sort> ':' <only_obj> ':' <only_rel> ':' <only_sort>
+
+ <must_*> ::= ('0'|'1') ('_'|<int>) (',' ('0'|'1') ('_'|<int>))*
+ <only> ::= '0'|'1'
+*)
+let add_user_constraints ~constraints
+ ((obj, rel, sort), (only_obj, only_rel, only_sort))
+=
+ let parse_must s =
+ let l = Pcre.split ~pat:"," s in
+ (try
+ List.map
+ (fun s ->
+ let subs = Pcre.extract ~pat:"^(.)(\\d+|_)$" s in
+ (bool_of_string' subs.(1), int_of_string' subs.(2)))
+ l
+ with
+ Not_found -> failwith ("Can't parse constraint string: " ^ constraints)
+ )
+ in
+ (* to be used on "obj" *)
+ let add_user_must33 user_must must =
+ List.map2
+ (fun (b, i) (p1, p2, p3) -> if b then (p1, p2, i) else (p1, p2, None))
+ user_must must
+ in
+ (* to be used on "rel" *)
+ let add_user_must22 user_must must =
+ List.map2
+ (fun (b, i) (p1, p2) -> if b then (p1, i) else (p1, None))
+ user_must must
+ in
+ (* to be used on "sort" *)
+ let add_user_must32 user_must must =
+ List.map2
+ (fun (b, i) (p1, p2, p3) -> if b then (p1, i, p3) else (p1, None, p3))
+ user_must must
+ in
+ match Pcre.split ~pat:":" constraints with
+ | [user_obj;user_rel;user_sort;user_only_obj;user_only_rel;user_only_sort] ->
+ let
+ (user_obj,user_rel,user_sort,user_only_obj,user_only_rel,user_only_sort)
+ =
+ (parse_must user_obj,
+ parse_must user_rel,
+ parse_must user_sort,
+ bool_of_string' user_only_obj,
+ bool_of_string' user_only_rel,
+ bool_of_string' user_only_sort)
+ in
+ let only' =
+ (if user_only_obj then only_obj else None),
+ (if user_only_rel then only_rel else None),
+ (if user_only_sort then only_sort else None)
+ in
+ let must' =
+ add_user_must33 user_obj obj,
+ add_user_must22 user_rel rel,
+ add_user_must32 user_sort sort
+ in
+ (must', only')
+ | _ -> failwith ("Can't parse constraint string: " ^ constraints)
+in
+
+(* HTTP DAEMON CALLBACK *)
+
+let callback (req: Http_types.request) outchan =
+ try
+ debug_print (sprintf "Received request: %s" req#path);
+ (match req#path with
+ | "/execute" ->
+ let mqi_handle = MQIConn.init mqi_flags debug_print in
+ let query_string = req#param "query" in
+ let lexbuf = Lexing.from_string query_string in
+ let query = MQueryUtil.query_of_text lexbuf in
+ let result = MQueryInterpreter.execute mqi_handle query in
+ let result_string = pp_result result in
+ MQIConn.close mqi_handle;
+ Http_daemon.respond ~body:result_string ~headers:[contype] outchan
+ | "/locate" ->
+ let mqi_handle = MQIConn.init mqi_flags debug_print in
+ let id = req#param "id" in
+ let query = MQueryGenerator.locate id in
+ let result = MQueryInterpreter.execute mqi_handle query in
+ MQIConn.close mqi_handle;
+ Http_daemon.respond ~headers:[contype] ~body:(pp_result result) outchan
+ | "/getpage" ->
+ (* TODO implement "is_permitted" *)
+ (let is_permitted _ = true in
+ let remove_fragment uri = Pcre.replace ~pat:"#.*" uri in
+ let page = remove_fragment (req#param "url") in
+ let preprocess =
+ (try
+ bool_of_string (req#param "preprocess")
+ with Invalid_argument _ | Http_types.Param_not_found _ -> false)
+ in
+ (match page with
+ | page when is_permitted page ->
+ (let fname = sprintf "%s/%s" pages_dir (remove_fragment page) in
+ Http_daemon.send_basic_headers ~code:200 outchan;
+ Http_daemon.send_header "Content-Type" "text/html" outchan;
+ Http_daemon.send_CRLF outchan;
+ if preprocess then begin
+ iter_file
+ (fun line ->
+ output_string outchan
+ ((apply_substs
+ (List.map
+ (function (key,value) ->
+ let key' =
+ (Pcre.extract ~pat:"param\\.(.*)" key).(1)
+ in
+ Pcre.regexp ("@" ^ key' ^ "@"), value
+ )
+ (List.filter
+ (fun (key,_) as p-> Pcre.pmatch ~pat:"^param\\." key)
+ req#params)
+ )
+ line) ^
+ "\n"))
+ fname
+ end else
+ Http_daemon.send_file ~src:(FileSrc fname) outchan)
+ | page -> Http_daemon.respond_forbidden ~url:page outchan))
+ | "/ask_uwobo" ->
+ let url = req#param "url" in
+ let server_and_port =
+ (Pcre.extract ~rex:server_and_port_url_RE url).(1)
+ in
+ if List.mem server_and_port valid_servers then
+ Http_daemon.respond
+ ~headers:["Content-Type", "text/html"]
+ ~body:(Http_client.Convenience.http_get url)
+ outchan
+ else
+ Http_daemon.respond
+ ~body:(pp_error ("Untrusted UWOBO server: " ^ server_and_port))
+ outchan
+ | "/searchPattern"
+ | "/matchConclusion"
+ | "/locateInductivePrinciple" ->
+ let mqi_handle = MQIConn.init mqi_flags debug_print in
+ let term_string = req#param "term" in
+ let lexbuf = Lexing.from_string term_string in
+ let (context, metasenv) = ([], []) in
+ let (dom, mk_metasenv_and_expr) =
+ CicTextualParserContext.main
+ ~context ~metasenv CicTextualLexer.token lexbuf
+ in
+ let id_to_uris_raw = req#param "aliases" in
+ let tokens = Pcre.split ~pat:"\\s" id_to_uris_raw in
+ let rec parse_tokens keys lookup = function (* TODO spostarla fuori *)
+ | [] -> keys, lookup
+ | "alias" :: key :: value :: rest ->
+ let key' = CicTextualParser0.Id key in
+ parse_tokens
+ (key'::keys)
+ (fun id ->
+ if id = key' then
+ Some
+ (CicTextualParser0.Uri (MQueryMisc.cic_textual_parser_uri_of_string value))
+ else lookup id)
+ rest
+ | _ -> failwith "Can't parse aliases"
+ in
+ let parse_choices choices_raw =
+ let choices = Pcre.split ~pat:";" choices_raw in
+ List.fold_left
+ (fun f x ->
+ match Pcre.split ~pat:"\\s" x with
+ | ""::id::tail
+ | id::tail when id<>"" ->
+ (fun id' ->
+prerr_endline ("#### " ^ id ^ " :=");
+List.iter (fun u -> prerr_endline ("<" ^ Netencoding.Url.decode u ^ ">")) tail;
+ if id = id' then
+ Some (List.map (fun u -> Netencoding.Url.decode u) tail)
+ else
+ f id')
+ | _ -> failwith "Can't parse choices")
+ (fun _ -> None)
+ choices
+ in
+ let (id_to_uris : Disambiguate.domain_and_interpretation) =
+ parse_tokens [] (fun _ -> None) tokens in
+ let id_to_choices =
+ try
+ let choices_raw = req#param "choices" in
+ parse_choices choices_raw
+ with Http_types.Param_not_found _ -> (fun _ -> None)
+ in
+ let module Chat: Disambiguate.Callbacks =
+ struct
+
+ let get_metasenv () =
+ !CicTextualParser0.metasenv
+
+ let set_metasenv metasenv =
+ CicTextualParser0.metasenv := metasenv
+
+ let output_html = prerr_endline
+
+ let interactive_user_uri_choice
+ ~selection_mode ?ok
+ ?enable_button_for_non_vars ~(title: string) ~(msg: string)
+ ~(id: string) (choices: string list)
+ =
+ (match id_to_choices id with
+ | Some choices -> choices
+ | None ->
+ let msg = Pcre.replace ~pat:"\'" ~templ:"\\\'" msg in
+ (match selection_mode with
+ | `SINGLE -> assert false
+ | `EXTENDED ->
+ Http_daemon.send_basic_headers ~code:200 outchan ;
+ Http_daemon.send_CRLF outchan ;
+ iter_file
+ (fun line ->
+ let formatted_choices =
+ String.concat ","
+ (List.map (fun uri -> sprintf "\'%s\'" uri) choices)
+ in
+ let processed_line =
+ apply_substs
+ [title_tag_RE, title;
+ choices_tag_RE, formatted_choices;
+ msg_tag_RE, msg;
+ id_to_uris_RE, id_to_uris_raw;
+ id_RE, id]
+ line
+ in
+ output_string outchan (processed_line ^ "\n"))
+ interactive_user_uri_choice_TPL;
+ raise Chat_unfinished))
+
+ let interactive_interpretation_choice interpretations =
+ let html_interpretations_labels =
+ String.concat ", "
+ (List.map
+ (fun l ->
+ "\'" ^
+ (String.concat "<br />"
+ (List.map
+ (fun (id, value) ->
+ (sprintf "alias %s %s" id value))
+ l)) ^
+ "\'")
+ interpretations)
+ in
+ let html_interpretations =
+ String.concat ", "
+ (List.map
+ (fun l ->
+ "\'" ^
+ (String.concat " "
+ (List.map
+ (fun (id, value) ->
+ (sprintf "alias %s %s"
+ id
+ (MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format'
+ value)))
+ l)) ^
+ "\'")
+ interpretations)
+ in
+ Http_daemon.send_basic_headers ~code:200 outchan ;
+ Http_daemon.send_CRLF outchan ;
+ iter_file
+ (fun line ->
+ let processed_line =
+ apply_substs
+ [interpretations_RE, html_interpretations;
+ interpretations_labels_RE, html_interpretations_labels]
+ line
+ in
+ output_string outchan (processed_line ^ "\n"))
+ interactive_interpretation_choice_TPL;
+ raise Chat_unfinished
+
+ let input_or_locate_uri ~title =
+ UriManager.uri_of_string "cic:/Coq/Init/DataTypes/nat_ind.con"
+
+ end
+ in
+ let module Disambiguate' = Disambiguate.Make (Chat) in
+ let (id_to_uris', metasenv', term') =
+ Disambiguate'.disambiguate_input mqi_handle
+ context metasenv dom mk_metasenv_and_expr id_to_uris
+ in
+ (match metasenv' with
+ | [] ->
+ let universe,
+ ((must_obj, must_rel, must_sort) as must'),
+ ((only_obj, only_rel, only_sort) as only) =
+ get_constraints term' req#path
+ in
+ let must'', only' =
+ (try
+ add_user_constraints
+ ~constraints:(req#param "constraints")
+ (must', only)
+ with Http_types.Param_not_found _ ->
+ let variables =
+ "var aliases = '" ^ id_to_uris_raw ^ "';\n" ^
+ "var constr_obj_len = " ^
+ string_of_int (List.length must_obj) ^ ";\n" ^
+ "var constr_rel_len = " ^
+ string_of_int (List.length must_rel) ^ ";\n" ^
+ "var constr_sort_len = " ^
+ string_of_int (List.length must_sort) ^ ";\n" in
+ let form =
+ (if must_obj = [] then "" else
+ "<h4>Obj constraints</h4>" ^
+ "<table>" ^
+ (String.concat "\n" (List.map html_of_r_obj must_obj)) ^
+ "</table>" ^
+ (* The following three lines to make Javascript create *)
+ (* the constr_obj[] and obj_depth[] arrays even if we *)
+ (* have only one real entry. *)
+ "<input type=\"hidden\" name=\"constr_obj\" />" ^
+ "<input type=\"hidden\" name=\"obj_depth\" />") ^
+ (if must_rel = [] then "" else
+ "<h4>Rel constraints</h4>" ^
+ "<table>" ^
+ (String.concat "\n" (List.map html_of_r_rel must_rel)) ^
+ "</table>" ^
+ (* The following two lines to make Javascript create *)
+ (* the constr_rel[] and rel_depth[] arrays even if *)
+ (* we have only one real entry. *)
+ "<input type=\"hidden\" name=\"constr_rel\" />" ^
+ "<input type=\"hidden\" name=\"rel_depth\" />") ^
+ (if must_sort = [] then "" else
+ "<h4>Sort constraints</h4>" ^
+ "<table>" ^
+ (String.concat "\n" (List.map html_of_r_sort must_sort)) ^
+ "</table>" ^
+ (* The following two lines to make Javascript create *)
+ (* the constr_sort[] and sort_depth[] arrays even if *)
+ (* we have only one real entry. *)
+ "<input type=\"hidden\" name=\"constr_sort\" />" ^
+ "<input type=\"hidden\" name=\"sort_depth\" />") ^
+ "<h4>Only constraints</h4>" ^
+ "Enforce Only constraints for objects: " ^
+ "<input type='checkbox' name='only_obj'" ^
+ (if only_obj = None then "" else " checked='yes'") ^ " /><br />" ^
+ "Enforce Rel constraints for objects: " ^
+ "<input type='checkbox' name='only_rel'" ^
+ (if only_rel = None then "" else " checked='yes'") ^ " /><br />" ^
+ "Enforce Sort constraints for objects: " ^
+ "<input type='checkbox' name='only_sort'" ^
+ (if only_sort = None then "" else " checked='yes'") ^ " /><br />"
+ in
+ Http_daemon.send_basic_headers ~code:200 outchan ;
+ Http_daemon.send_CRLF outchan ;
+ iter_file
+ (fun line ->
+ let processed_line =
+ apply_substs
+ [form_RE, form ;
+ variables_initialization_RE, variables] line
+ in
+ output_string outchan (processed_line ^ "\n"))
+ constraints_choice_TPL;
+ raise Chat_unfinished)
+ in
+ let query =
+ MQueryGenerator.query_of_constraints (Some universe) must'' only'
+ in
+ let results = MQueryInterpreter.execute mqi_handle query in
+ Http_daemon.send_basic_headers ~code:200 outchan ;
+ Http_daemon.send_CRLF outchan ;
+ iter_file
+ (fun line ->
+ let new_aliases =
+ match id_to_uris' with
+ | (domain, f) ->
+ String.concat ", "
+ (List.map
+ (fun name ->
+ sprintf "\'alias %s cic:%s\'"
+ (match name with
+ CicTextualParser0.Id name -> name
+ | _ -> assert false (*CSC: completare *))
+ (match f name with
+ | None -> assert false
+ | Some (CicTextualParser0.Uri t) ->
+ MQueryMisc.string_of_cic_textual_parser_uri
+ t
+ | _ -> assert false (*CSC: completare *)))
+ domain)
+ in
+ let processed_line =
+ apply_substs
+ [results_RE, theory_of_result results ;
+ new_aliases_RE, new_aliases]
+ line
+ in
+ output_string outchan (processed_line ^ "\n"))
+ final_results_TPL
+ | _ -> (* unable to instantiate some implicit variable *)
+ Http_daemon.respond
+ ~headers:[contype]
+ ~body:"some implicit variables are still unistantiated :-("
+ outchan);
+ MQIConn.close mqi_handle
+ | invalid_request ->
+ Http_daemon.respond_error ~status:(`Client_error `Bad_request) outchan);
+ debug_print (sprintf "%s done!" req#path)
+ with
+ | Chat_unfinished -> prerr_endline "Chat unfinished, Try again!"
+ | Http_types.Param_not_found attr_name ->
+ bad_request (sprintf "Parameter '%s' is missing" attr_name) outchan
+ | exc ->
+ Http_daemon.respond
+ ~body:(pp_error ("Uncaught exception: " ^ (Printexc.to_string exc)))
+ outchan
+in
+printf "%s started and listening on port %d\n" daemon_name port;
+printf "Current directory is %s\n" (Sys.getcwd ());
+printf "HTML directory is %s\n" pages_dir;
+flush stdout;
+Unix.putenv "http_proxy" "";
+Http_daemon.start' ~port callback;
+printf "%s is terminating, bye!\n" daemon_name
+
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