X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fgrafite_parser%2FdependenciesParser.ml;fp=helm%2Focaml%2Fgrafite_parser%2FdependenciesParser.ml;h=fc49de60009b78462ebecdbc54ec322cd5fba412;hb=792b5d29ebae8f917043d9dd226692919b5d6ca1;hp=0000000000000000000000000000000000000000;hpb=a14a8c7637fd0b95e9d4deccb20c6abc98e8f953;p=helm.git diff --git a/helm/ocaml/grafite_parser/dependenciesParser.ml b/helm/ocaml/grafite_parser/dependenciesParser.ml new file mode 100644 index 000000000..fc49de600 --- /dev/null +++ b/helm/ocaml/grafite_parser/dependenciesParser.ml @@ -0,0 +1,92 @@ +(* Copyright (C) 2005, 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://helm.cs.unibo.it/ + *) + +(* $Id$ *) + +exception UnableToInclude of string + + (* statements meaningful for matitadep *) +type dependency = + | IncludeDep of string + | BaseuriDep of string + | UriDep of UriManager.uri + +let pp_dependency = function + | IncludeDep str -> "include \"" ^ str ^ "\"" + | BaseuriDep str -> "set \"baseuri\" \"" ^ str ^ "\"" + | UriDep uri -> "uri \"" ^ UriManager.string_of_uri uri ^ "\"" + +let parse_dependencies lexbuf = + let tok_stream,_ = + CicNotationLexer.level2_ast_lexer.Token.tok_func (Obj.magic lexbuf) + in + let rec parse acc = + (parser + | [< '("URI", u) >] -> + parse (UriDep (UriManager.uri_of_string u) :: acc) + | [< '("IDENT", "include"); '("QSTRING", fname) >] -> + parse (IncludeDep fname :: acc) + | [< '("IDENT", "set"); '("QSTRING", "baseuri"); '("QSTRING", baseuri) >] -> + parse (BaseuriDep baseuri :: acc) + | [< '("EOI", _) >] -> acc + | [< 'tok >] -> parse acc + | [< >] -> acc) tok_stream + in + List.rev (parse []) + +let make_absolute paths path = + let rec aux = function + | [] -> ignore (Unix.stat path); path + | p :: tl -> + let path = p ^ "/" ^ path in + try + ignore (Unix.stat path); path + with Unix.Unix_error _ -> aux tl + in + try + aux paths + with Unix.Unix_error _ -> raise (UnableToInclude path) +;; + +let baseuri_of_script ~include_paths file = + let file = make_absolute include_paths file in + let ic = open_in file in + let istream = Ulexing.from_utf8_channel ic in + let rec find_baseuri = + function + [] -> failwith ("No baseuri defined in " ^ file) + | BaseuriDep s::_ -> s + | _::tl -> find_baseuri tl in + let buri = find_baseuri (parse_dependencies istream) in + let uri = Http_getter_misc.strip_trailing_slash buri in + if String.length uri < 5 || String.sub uri 0 5 <> "cic:/" then + HLog.error (file ^ " sets an incorrect baseuri: " ^ buri); + (try + ignore(Http_getter.resolve uri) + with + | Http_getter_types.Unresolvable_URI _ -> + HLog.error (file ^ " sets an unresolvable baseuri: " ^ buri) + | Http_getter_types.Key_not_found _ -> ()); + uri