X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=components%2Furimanager%2FuriManager.ml;fp=components%2Furimanager%2FuriManager.ml;h=c0da8eb4b334e5a3e01fea383fcfcc8c88879678;hp=0000000000000000000000000000000000000000;hb=f61af501fb4608cc4fb062a0864c774e677f0d76;hpb=58ae1809c352e71e7b5530dc41e2bfc834e1aef1

diff --git a/components/urimanager/uriManager.ml b/components/urimanager/uriManager.ml
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+(* Copyright (C) 2000, 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/.
+ *)
+
+(* $Id$ *)
+
+(*
+ * "cic:/a/b/c.con" => ("cic:/a/b/c.con", id )
+ * "cic:/a/b/c.ind#xpointer(1/1)" => ("cic:/a/b/c.con#xpointer(1/1)", id)
+ * "cic:/a/b/c.ind#xpointer(1/1/1)" => ("cic:/a/b/c.con#xpointer(1/1/1)", id)
+ *)
+
+let fresh_id =
+ let id = ref 0 in
+  function () ->
+    incr id;
+    !id
+
+(* (uriwithxpointer, uniqueid) 
+ * where uniqueid is used to build a set of uri *)
+type uri = string * int;;
+
+let eq uri1 uri2 =
+  uri1 == uri2 
+;;
+
+let string_of_uri (uri,_) =
+ uri
+
+let name_of_uri (uri, _) = 
+  let xpointer_offset = 
+    try String.rindex uri '#' with Not_found -> String.length uri - 1
+  in
+  let index1 = String.rindex_from uri xpointer_offset '/' + 1 in
+  let index2 = String.rindex uri '.' in
+  String.sub uri index1 (index2 - index1)
+
+let nameext_of_uri (uri, _) = 
+  let xpointer_offset, mah = 
+    try String.rindex uri '#', 0 with Not_found -> String.length uri - 1, 1
+  in
+  let index1 = String.rindex_from uri xpointer_offset '/' + 1 in
+  String.sub uri index1 (xpointer_offset - index1 + mah)
+  
+let buri_of_uri (uri,_) = 
+  let xpointer_offset = 
+    try String.rindex uri '#' with Not_found -> String.length uri - 1
+  in
+  let index = String.rindex_from uri xpointer_offset '/' in
+  String.sub uri 0 index
+
+module OrderedStrings =
+ struct
+  type t = string
+  let compare (s1 : t) (s2 : t) = compare s1 s2
+ end
+;;
+
+module MapStringsToUri = Map.Make(OrderedStrings);;
+
+(* Invariant: the map is the identity function,
+ *  i.e. 
+ *    let str' = (MapStringsToUri.find str !set_of_uri) in
+ *    str' == (MapStringsToUri.find str' !set_of_uri)
+ *)
+let set_of_uri = ref MapStringsToUri.empty;;
+
+exception IllFormedUri of string;;
+
+let _dottypes = ".types"
+let _types = "types",5
+let _dotuniv = ".univ"
+let _univ = "univ",4
+let _dotann = ".ann"
+let _ann = "ann",3
+let _var = "var",3
+let _dotbody = ".body"
+let _con = "con",3
+let _ind = "ind",3
+let _xpointer = "#xpointer(1/"
+let _con3 = "con"
+let _var3 = "var"
+let _ind3 = "ind"
+let _ann3 = "ann"
+let _univ4 = "univ"
+let _types5 = "types"
+let _xpointer8 = "xpointer"
+let _cic5 = "cic:/"
+
+let is_malformed suri =
+  try 
+    if String.sub suri 0 5 <> _cic5 then true
+    else
+      let len = String.length suri - 5 in
+      let last5 = String.sub suri len 5 in
+      let last4 = String.sub last5 1 4 in
+      let last3 = String.sub last5 2 3 in
+      if last3 = _con3 || last3 = _var3 || last3 = _ind3 || 
+         last3 = _ann3 || last5 = _types5 || last5 = _dotbody ||
+         last4 = _univ4 then 
+           false
+      else 
+        try
+          let index = String.rindex suri '#' + 1 in
+          let xptr = String.sub suri index 8 in
+          if xptr = _xpointer8 then
+            false
+          else
+            true
+        with Not_found -> true
+  with Invalid_argument _ -> true
+    
+(* hash conses an uri *)
+let uri_of_string suri =
+  try
+    MapStringsToUri.find suri !set_of_uri
+  with Not_found -> 
+    if is_malformed suri then
+      raise (IllFormedUri suri) 
+    else
+      let new_uri = suri, fresh_id () in
+      set_of_uri := MapStringsToUri.add suri new_uri !set_of_uri;
+      new_uri
+
+
+let strip_xpointer ((uri,_) as olduri) =
+  try 
+    let index = String.rindex uri '#' in
+    let no_xpointer = String.sub uri 0 index in
+    uri_of_string no_xpointer
+  with
+    Not_found -> olduri
+
+let clear_suffix uri ?(pat2="",0) pat1 =
+  try
+    let index = String.rindex uri '.' in
+    let index' = index + 1 in 
+    let suffix = String.sub uri index' (String.length uri - index') in
+    if fst pat1 = suffix || fst pat2 = suffix then
+      String.sub uri 0 index
+    else
+      uri
+  with
+    Not_found -> assert false
+
+let has_suffix uri (pat,n) =
+  try
+    let suffix = String.sub uri (String.length uri - n) n in
+    pat = suffix 
+  with
+    Not_found -> assert false
+
+ 
+let cicuri_of_uri (uri, _) = uri_of_string (clear_suffix uri ~pat2:_types _ann)
+
+let annuri_of_uri (uri , _) = uri_of_string ((clear_suffix uri _ann) ^ _dotann)
+
+let uri_is_annuri (uri, _) = has_suffix uri _ann
+
+let uri_is_var (uri, _) = has_suffix uri _var
+
+let uri_is_con (uri, _) = has_suffix uri _con
+
+let uri_is_ind (uri, _) = has_suffix uri _ind
+
+let bodyuri_of_uri (uri, _) =
+  if has_suffix uri _con then
+    Some (uri_of_string (uri ^ _dotbody))
+  else
+    None
+;;
+
+(* these are bugged!
+ * we should remove _types, _univ, _ann all toghether *)
+let innertypesuri_of_uri (uri, _) =
+  uri_of_string ((clear_suffix uri _types) ^ _dottypes)
+;;
+let univgraphuri_of_uri (uri,_) = 
+  uri_of_string ((clear_suffix uri _univ) ^ _dotuniv)
+;;
+  
+
+let uri_of_uriref (uri, _) typeno consno =
+  let typeno = typeno + 1 in
+  let suri =
+    match consno with
+    | None -> Printf.sprintf "%s%s%d)" uri _xpointer typeno
+    | Some n -> Printf.sprintf "%s%s%d/%d)" uri _xpointer typeno n
+  in
+  uri_of_string suri
+
+let compare (_,id1) (_,id2) = id1 - id2
+
+module OrderedUri =
+struct
+  type t = uri
+  let compare = compare (* the one above, not Pervasives.compare *)
+end
+
+module UriSet = Set.Make (OrderedUri)
+
+(*
+module OrderedUriPair =
+struct
+  type t = uri * uri
+  let compare (u11, u12) (u21, u22) =
+    match compare u11 u21 with
+    | 0 -> compare u12 u22
+    | x -> x
+end
+
+module UriPairSet = Set.Make (OrderedUriPair)
+*)
+
+module HashedUri =
+struct
+  type t = uri
+  let equal = eq
+  let hash = snd
+end
+
+module UriHashtbl = Hashtbl.Make (HashedUri)
+
+