-(* 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
*)
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
+(** Functions "imported" from Http_getter_misc *)
-let input_file fname =
- let size = (Unix.stat fname).Unix.st_size in
- let buf = Buffer.create size in
- let ic = open_in fname in
- Buffer.add_channel buf ic size;
- close_in ic;
- Buffer.contents buf
+let strip_trailing_slash = Http_getter_misc.strip_trailing_slash
+let normalize_dir = Http_getter_misc.normalize_dir
+let strip_suffix = Http_getter_misc.strip_suffix
+let baseuri_of_baseuri_decl st =
+ match st with
+ | GrafiteAst.Executable (_, GrafiteAst.Command (_, GrafiteAst.Set (_, "baseuri", buri))) ->
+ Some buri
+ | _ -> None
+
+let is_empty buri =
+ List.for_all
+ (function
+ Http_getter_types.Ls_section _ -> true
+ | Http_getter_types.Ls_object _ -> false)
+ (Http_getter.ls (Http_getter_misc.strip_trailing_slash buri ^ "/"))
+
+let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
+
+let is_dir_empty d =
+ try
+ let od = Unix.opendir d in
+ try
+ ignore (Unix.readdir od);
+ ignore (Unix.readdir od);
+ ignore (Unix.readdir od);
+ Unix.closedir od;
+ false
+ with End_of_file ->
+ Unix.closedir od;
+ true
+ with Unix.Unix_error _ -> true
+
+let safe_rmdir d = try Unix.rmdir d with Unix.Unix_error _ -> ()
+
+let rec rmdir_descend d =
+ if is_dir_empty d then
+ begin
+ safe_rmdir d;
+ rmdir_descend (Filename.dirname d)
+ end
+
+let absolute_path file =
+ if file.[0] = '/' then file else Unix.getcwd () ^ "/" ^ file
+
let is_proof_script fname = true (** TODO Zack *)
let is_proof_object fname = true (** TODO Zack *)
else
s
+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
+ 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 ""
+
+ inherit basic_history (0, -1 , -1)
+
+ 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
+
+ inherit basic_history (0, 0, 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) =
+ 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';
+ Array.blit data' 0 data 0 (Array.length data')
+ method save = (Array.copy data, hd, tl, cur)
+ end
+
+let singleton f =
+ let instance = lazy (f ()) in
+ fun () -> Lazy.force instance
+
+let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
+
+let end_ma_RE = Pcre.regexp "\\.ma$"
+
+let obj_file_of_baseuri baseuri =
+ let path =
+ Helm_registry.get "matita.basedir" ^ "/xml" ^
+ Pcre.replace ~pat:"^cic:" ~templ:"" baseuri
+ in
+ path ^ ".moo"
+
+let list_tl_at ?(equality=(==)) e l =
+ let rec aux =
+ function
+ | [] -> raise Not_found
+ | hd :: tl as l when equality hd e -> l
+ | hd :: tl -> aux tl
+ in
+ aux l
+
projects / helm.git / blobdiff