+++ /dev/null
-(*
- * Copyright (C) 2003-2004:
- * Stefano Zacchiroli <zack@cs.unibo.it>
- * for the HELM Team http://helm.cs.unibo.it/
- *
- * 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/
- *)
-
-open Http_getter_types;;
-open Printf;;
-
-let string_of_ls_flag = function No -> "NO" | Yes -> "YES" | Ann -> "ANN"
-let string_of_encoding = function
- | `Normal -> "Normal"
- | `Gzipped -> "GZipped"
-
-let is_cic_obj_uri uri = Pcre.pmatch ~pat:"^cic:" uri
-let is_theory_uri uri = Pcre.pmatch ~pat:"^theory:" uri
-let is_cic_uri uri = is_cic_obj_uri uri || is_theory_uri uri
-let is_nuprl_uri uri = Pcre.pmatch ~pat:"^nuprl:" uri
-let is_rdf_uri uri = Pcre.pmatch ~pat:"^helm:rdf(.*):(.*)//(.*)" uri
-let is_xsl_uri uri = Pcre.pmatch ~pat:"^\\w+\\.xsl" uri
-
-let rec uri_of_string = function
- | uri when is_rdf_uri uri ->
- (match Pcre.split ~pat:"//" uri with
- | [ prefix; uri ] ->
- let rest =
- match uri_of_string uri with
- | Cic_uri xmluri -> xmluri
- | _ -> raise (Invalid_URI uri)
- in
- Rdf_uri (prefix, rest)
- | _ -> raise (Invalid_URI uri))
- | uri when is_cic_uri uri -> Cic_uri (Cic (Pcre.replace ~pat:"^cic:" uri))
- | uri when is_nuprl_uri uri -> Nuprl_uri (Pcre.replace ~pat:"^nuprl:" uri)
- | uri when is_theory_uri uri ->
- Cic_uri (Theory (Pcre.replace ~pat:"^theory:" uri))
- | uri -> raise (Invalid_URI uri)
-
-let patch_xsl ?(via_http = true) () =
- fun line ->
- let mk_patch_fun tag line =
- Pcre.replace
- ~pat:(sprintf "%s\\s+href=\"" tag)
- ~templ:(sprintf "%s href=\"%s/getxslt?uri="
- tag (Lazy.force Http_getter_env.my_own_url))
- line
- in
- let (patch_import, patch_include) =
- (mk_patch_fun "xsl:import", mk_patch_fun "xsl:include")
- in
- patch_include (patch_import line)
-
-let patch_system kind ?(via_http = true) () =
- let rex =
- Pcre.regexp (sprintf "%s (.*) SYSTEM\\s+\"((%s)/)?" kind
- (String.concat "|" (Lazy.force Http_getter_env.dtd_base_urls)))
- in
- let templ =
- if via_http then
- sprintf "%s $1 SYSTEM \"%s/getdtd?uri=" kind
- (Lazy.force Http_getter_env.my_own_url)
- else
- sprintf "%s $1 SYSTEM \"file://%s/" kind
- (Lazy.force Http_getter_env.dtd_dir)
- in
- fun line -> Pcre.replace ~rex ~templ line
-
-let patch_entity = patch_system "ENTITY"
-let patch_doctype = patch_system "DOCTYPE"
-
-let patch_xmlbase =
- let rex = Pcre.regexp "^(\\s*<\\w[^ ]*)(\\s|>)" in
- fun xmlbases baseurl baseuri s ->
- let s' =
- Pcre.replace ~rex
- ~templ:(sprintf "$1 xml:base=\"%s\" helm:base=\"%s\"$2" baseurl baseuri)
- s
- in
- if s <> s' then xmlbases := None;
- s'
-
-let patch_dtd = patch_entity
-let patch_xml ?via_http ?xmlbases () =
- let xmlbases = ref xmlbases in
- fun line ->
- match !xmlbases with
- | None -> patch_doctype ?via_http () (patch_entity ?via_http () line)
- | Some (xmlbaseuri, xmlbaseurl) ->
- patch_xmlbase xmlbases xmlbaseurl xmlbaseuri
- (patch_doctype ?via_http () (patch_entity ?via_http () line))
-
-let return_file
- ~fname ?contype ?contenc
- ?(patch_fun = fun x -> x) ?(gunzip = false) ?(via_http = true) outchan
- =
- let headers =
- match (contype, contenc) with
- | (Some t, Some e) -> ["Content-Encoding", e; "Content-Type", t]
- | (Some t, None) -> ["Content-Type" , t]
- | (None, Some e) -> ["Content-Encoding", e]
- | (None, None) -> []
- in
- if via_http then begin
- Http_daemon.send_basic_headers ~code:200 outchan;
- Http_daemon.send_headers headers outchan;
- Http_daemon.send_CRLF outchan
- end;
- if gunzip then begin (* gunzip needed, uncompress file, apply patch_fun to
- it, compress the result and sent it to client *)
- let (tmp1, tmp2) =
- (Http_getter_misc.tempfile (), Http_getter_misc.tempfile ())
- in
- try
- Http_getter_misc.gunzip ~keep:true ~output:tmp1 fname;(* gunzip to tmp1 *)
- let new_file = open_out tmp2 in
- Http_getter_misc.iter_file (* tmp2 = patch(tmp1) *)
- (fun line ->
- output_string new_file (patch_fun line ^ "\n");
- flush outchan)
- tmp1;
- close_out new_file;
- Http_getter_misc.gzip ~output:tmp1 tmp2; (* tmp1 = gzip(tmp2); rm tmp2 *)
- Http_getter_misc.iter_file (* send tmp1 to client as is*)
- (fun line -> output_string outchan (line ^ "\n"); flush outchan)
- tmp1;
- Sys.remove tmp1 (* rm tmp1 *)
- with e ->
- Sys.remove tmp1;
- raise e
- end else begin (* no need to gunzip, apply patch_fun directly to file *)
- Http_getter_misc.iter_file
- (fun line -> output_string outchan (patch_fun line ^ "\n"); flush outchan)
- fname;
- end
-;;
-
projects / helm.git / blobdiff