rebuilt against ocaml 3.08.3

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

diff --git a/helm/matita/matitaMisc.ml b/helm/matita/matitaMisc.ml
index f332fcbd1e684bce9dbbcca5d3d546bfdc033dbb..094f965e0ae20d02aff1ae0130d82899b4d729a3 100644 (file)
--- a/helm/matita/matitaMisc.ml
+++ b/helm/matita/matitaMisc.ml
@@ -23,6 +23,8 @@
  * http://helm.cs.unibo.it/
  *)
 
+open Printf
+
 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
 
@@ -37,3 +39,111 @@ let input_file fname =
 let is_proof_script fname = true  (** TODO Zack *)
 let is_proof_object fname = true  (** TODO Zack *)
 
+let append_phrase_sep s =
+  if not (Pcre.pmatch ~pat:(sprintf "%s$" BuildTimeConf.phrase_sep) s) then
+    s ^ BuildTimeConf.phrase_sep
+  else
+    s
+
+let strip_trailing_blanks =
+  let rex = Pcre.regexp "\\s*$" in
+  fun s -> Pcre.replace ~rex s
+
+let empty_mathml () =
+  Misc.domImpl#createDocument ~namespaceURI:(Some Misc.mathml_ns)
+    ~qualifiedName:(Gdome.domString "math") ~doctype:None
+
+let empty_boxml () =
+  Misc.domImpl#createDocument ~namespaceURI:(Some Misc.boxml_ns) 
+    ~qualifiedName:(Gdome.domString "box") ~doctype:None
+
+exception History_failure
+
+type 'a memento = 'a array * int * int * int  (* data, hd, tl, cur *)
+
+class type ['a] history =
+  object
+    method add : 'a -> unit
+    method next : 'a
+    method previous : 'a
+    method load: 'a memento -> unit
+    method save: 'a memento
+  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 *)
+    method add s =
+      data.(hd) <- s;
+      if tl = -1 then tl <- hd;
+      hd <- incr hd;
+      if hd = tl then tl <- incr tl;
+      cur <- hd
+    method previous =
+      if cur = tl then raise History_failure;
+      cur <- decr cur;
+      data.(cur)
+    method next =
+      if cur = hd then raise History_failure;
+      cur <- incr cur;
+      if cur = hd then "" else data.(cur)
+    method load (data', hd', tl', cur') =
+      assert (Array.length data = Array.length data');
+      hd <- hd'; tl <- tl'; cur <- cur';
+      Array.blit data' 0 data 0 (Array.length data')
+    method save = (Array.copy data, hd, tl, cur)
+  end
+
+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
+    method previous =
+      if cur = tl then raise History_failure;
+      cur <- cur - 1;
+      if cur = ~-1 then cur <- size - 1;
+      data.(cur)
+    method next =
+      if cur = hd then raise History_failure;
+      cur <- cur + 1;
+      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
+    method load (data', hd', tl', cur') =
+      assert (Array.length data = Array.length data');
+      hd <- hd'; tl <- tl'; cur <- cur';
+      Array.blit data' 0 data 0 (Array.length data')
+    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)))
+