version 0.7.1

[helm.git] / helm / matita / matitaMisc.ml

diff --git a/helm/matita/matitaMisc.ml b/helm/matita/matitaMisc.ml
index 094f965e0ae20d02aff1ae0130d82899b4d729a3..81f185ae83ef4e590e0409e603df1e851591e3ad 100644 (file)
--- a/helm/matita/matitaMisc.ml
+++ b/helm/matita/matitaMisc.ml
@@ -1,4 +1,4 @@
-(* Copyright (C) 2004, HELM Team.
+(* Copyright (C) 2004-2005, HELM Team.
  * 
  * This file is part of HELM, an Hypertextual, Electronic
  * Library of Mathematics, developed at the Computer Science
@@ -24,9 +24,19 @@
  *)
 
 open Printf
+open MatitaTypes 
 
-let is_dir fname = (Unix.stat fname).Unix.st_kind = Unix.S_DIR
-let is_regular fname = (Unix.stat fname).Unix.st_kind = Unix.S_REG
+let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
+
+let is_dir fname =
+  try
+    (Unix.stat fname).Unix.st_kind = Unix.S_DIR
+  with Unix.Unix_error _ -> false
+
+let is_regular fname =
+  try
+    (Unix.stat fname).Unix.st_kind = Unix.S_REG
+  with Unix.Unix_error _ -> false
 
 let input_file fname =
   let size = (Unix.stat fname).Unix.st_size in
@@ -49,12 +59,16 @@ let strip_trailing_blanks =
   let rex = Pcre.regexp "\\s*$" in
   fun s -> Pcre.replace ~rex s
 
+let strip_trailing_slash =
+  let rex = Pcre.regexp "/$" in
+  fun s -> Pcre.replace ~rex s
+
 let empty_mathml () =
-  Misc.domImpl#createDocument ~namespaceURI:(Some Misc.mathml_ns)
+  DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
     ~qualifiedName:(Gdome.domString "math") ~doctype:None
 
 let empty_boxml () =
-  Misc.domImpl#createDocument ~namespaceURI:(Some Misc.boxml_ns) 
+  DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns) 
     ~qualifiedName:(Gdome.domString "box") ~doctype:None
 
 exception History_failure
@@ -68,17 +82,30 @@ class type ['a] history =
     method previous : 'a
     method load: 'a memento -> unit
     method save: 'a memento
+    method is_begin: bool
+    method is_end: bool
   end
 
+class basic_history (head, tail, cur) =
+  object
+    val mutable hd = head  (* insertion point *)
+    val mutable tl = tail (* oldest inserted item *)
+    val mutable cur = cur  (* current item for the history *)
+    
+    method is_begin = cur <= tl
+    method is_end = cur >= hd
+  end
+  
+  
 class shell_history size =
   let size = size + 1 in
   let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
   let incr x = (x + 1) mod size in
   object (self)
     val data = Array.create size ""
-    val mutable hd = 0  (* insertion point *)
-    val mutable tl = -1 (* oldest inserted item *)
-    val mutable cur = -1  (* current item for the history *)
+
+    inherit basic_history (0, -1 , -1)
+    
     method add s =
       data.(hd) <- s;
       if tl = -1 then tl <- hd;
@@ -104,9 +131,9 @@ class ['a] browser_history ?memento size init =
   object (self)
     initializer match memento with Some m -> self#load m | _ -> ()
     val data = Array.create size init
-    val mutable hd = 0
-    val mutable tl = 0
-    val mutable cur = 0
+
+    inherit basic_history (0, 0, 0)
+    
     method previous =
       if cur = tl then raise History_failure;
       cur <- cur - 1;
@@ -118,12 +145,15 @@ class ['a] browser_history ?memento size init =
       if cur = size then cur <- 0;
       data.(cur)
     method add (e:'a) =
-      cur <- cur + 1;
-      if cur = size then cur <- 0;
-      if cur = tl then tl <- tl + 1;
-      if tl = size then tl <- 0;
-      hd <- cur;
-      data.(cur) <- e
+      if e <> data.(cur) then
+        begin
+          cur <- cur + 1;
+          if cur = size then cur <- 0;
+          if cur = tl then tl <- tl + 1;
+          if tl = size then tl <- 0;
+          hd <- cur;
+          data.(cur) <- e
+        end
     method load (data', hd', tl', cur') =
       assert (Array.length data = Array.length data');
       hd <- hd'; tl <- tl'; cur <- cur';
@@ -131,19 +161,57 @@ class ['a] browser_history ?memento size init =
     method save = (Array.copy data, hd, tl, cur)
   end
 
-let dbd_instance =
-  let dbd = lazy (
-    Mysql.quick_connect
-      ~host:(Helm_registry.get "db.host")
-      ~user:(Helm_registry.get "db.user")
-      ~database:(Helm_registry.get "db.database")
-      ())
-  in
-  fun () -> Lazy.force dbd
-
 let singleton f =
   let instance = lazy (f ()) in
   fun () -> Lazy.force instance
 
-let mkdirs = List.iter (fun d -> ignore (Unix.system ("mkdir -p " ^ d)))
+let mkdir d =
+  let errmsg = sprintf "Unable to create directory \"%s\"" d in
+  try
+    (match Unix.system ("mkdir -p " ^ d) with
+    | Unix.WEXITED 0 -> ()
+    | _ -> failwith errmsg)
+  with Unix.Unix_error _ -> failwith errmsg
+
+let get_proof_status status =
+  match status.proof_status with
+  | Incomplete_proof s -> s
+  | _ -> statement_error "no ongoing proof"
+
+let get_proof_metasenv status =
+  match status.proof_status with
+  | No_proof -> []
+  | Incomplete_proof ((_, metasenv, _, _), _) -> metasenv
+  | Proof (_, metasenv, _, _) -> metasenv
+  | Intermediate m -> m
+
+let get_proof_context status =
+  match status.proof_status with
+  | Incomplete_proof ((_, metasenv, _, _), goal) ->
+      let (_, context, _) = CicUtil.lookup_meta goal metasenv in
+      context
+  | _ -> []
+ 
+let get_proof_aliases status = status.aliases
+
+let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
+
+let unopt = function None -> failwith "unopt: None" | Some v -> v
+
+let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
+
+let end_ma_RE = Pcre.regexp "\\.ma$"
+let obj_file_of_script f = Pcre.replace ~rex:end_ma_RE ~templ:".moo" f
+
+let rec list_uniq = function 
+  | [] -> []
+  | h::[] -> [h]
+  | h1::h2::tl when h1 = h2 -> list_uniq (h2 :: tl) 
+  | h1::tl (* when h1 <> h2 *) -> h1 :: list_uniq tl
+
+let debug_wrap name f =
+  prerr_endline (sprintf "debug_wrap: ==>> %s" name);
+  let res = f () in
+  prerr_endline (sprintf "debug_wrap: <<== %s" name);
+  res