(** {2 List processing} *)
+let flatten_map f l =
+ List.flatten (List.map f l)
+;;
+
let rec list_uniq ?(eq=(=)) = function
| [] -> []
| h::[] -> [h]
| None -> filter_map f tl
| Some v -> v :: filter_map f tl)
+let list_rev_map_filter f l =
+ let rec aux a = function
+ | [] -> a
+ | hd :: tl ->
+ begin match f hd with
+ | None -> aux a tl
+ | Some b -> aux (b :: a) tl
+ end
+ in
+ aux [] l
+
+let list_rev_map_filter_fold f v l =
+ let rec aux v a = function
+ | [] -> v, a
+ | hd :: tl ->
+ begin match f v hd with
+ | v, None -> aux v a tl
+ | v, Some b -> aux v (b :: a) tl
+ end
+ in
+ aux v [] l
+
let list_concat ?(sep = []) =
let rec aux acc =
function
in
aux l
+let split_nth n l =
+ let rec aux acc n l =
+ match n, l with
+ | 0, _ -> List.rev acc, l
+ | n, [] -> raise (Failure "HExtlib.split_nth")
+ | n, hd :: tl -> aux (hd :: acc) (n - 1) tl in
+ aux [] n l
+
+let list_last l =
+ let l = List.rev l in
+ try List.hd l with exn -> raise (Failure "HExtlib.list_last")
+;;
+
(** {2 File predicates} *)
let is_dir fname =
(Unix.stat fname).Unix.st_kind = Unix.S_DIR
with Unix.Unix_error _ -> false
+let writable_dir path =
+ try
+ let file = path ^ "/prova_matita" in
+ let oc = open_out file in
+ close_out oc;
+ Sys.remove file;
+ true
+ with Sys_error _ -> false
+
+
let is_regular fname =
try
(Unix.stat fname).Unix.st_kind = Unix.S_REG
with Unix.Unix_error _ -> false
+let is_executable fname =
+ try
+ let stat = (Unix.stat fname) in
+ stat.Unix.st_kind = Unix.S_REG &&
+ (stat.Unix.st_perm land 0o001 > 0)
+ with Unix.Unix_error _ -> false
+
+let chmod mode filename =
+ Unix.chmod filename mode
+
let mkdir path =
let components = split ~sep:'/' path in
let rec aux where = function
let path =
if where = "" then piece else where ^ "/" ^ piece in
(try
- Unix.mkdir path 0o755
+ Unix.mkdir path 0o755; chmod 0o2775 path
with
| Unix.Unix_error (Unix.EEXIST,_,_) -> ()
| Unix.Unix_error (e,_,_) ->
raise
(Failure
- ("Unix.mkdir " ^ path ^ " 0o755 :" ^ (Unix.error_message e))));
+ ("Unix.mkdir " ^ path ^ " 0o2775 :" ^ (Unix.error_message e))));
aux path tl
in
let where = if path.[0] = '/' then "/" else "" in
let output_file ~filename ~text =
let oc = open_out filename in
output_string oc text;
- close_out oc
+ close_out oc;
+ chmod 0o664 filename
let blank_split s =
let len = String.length s in
let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
let is_dir_empty d =
- let od = Unix.opendir d in
- let rec aux () =
- let name = Unix.readdir od in
- if name <> "." && name <> ".." then false else aux () in
- let res = try aux () with End_of_file -> true in
- Unix.closedir od;
- res
+ try
+ let od = Unix.opendir d in
+ let rec aux () =
+ let name = Unix.readdir od in
+ if name <> "." && name <> ".." then false else aux () in
+ let res = try aux () with End_of_file -> true in
+ Unix.closedir od;
+ res
+ with
+ Unix.Unix_error _ -> true (* raised by Unix.opendir, we hope :-) *)
let safe_rmdir d = try Unix.rmdir d with Unix.Unix_error _ -> ()
(** {2 Localized exceptions } *)
-exception Localized of Token.flocation * exn
+exception Localized of Stdpp.location * exn
-let loc_of_floc = function
- | { Lexing.pos_cnum = loc_begin }, { Lexing.pos_cnum = loc_end } ->
- (loc_begin, loc_end)
+let loc_of_floc floc = Stdpp.first_pos floc, Stdpp.last_pos floc;;
let floc_of_loc (loc_begin, loc_end) =
- let floc_begin =
- { Lexing.pos_fname = ""; Lexing.pos_lnum = -1; Lexing.pos_bol = -1;
- Lexing.pos_cnum = loc_begin }
- in
- let floc_end = { floc_begin with Lexing.pos_cnum = loc_end } in
- (floc_begin, floc_end)
+ Stdpp.make_loc (loc_begin, loc_end)
let dummy_floc = floc_of_loc (-1, -1)
let raise_localized_exception ~offset floc exn =
- let (x, y) = loc_of_floc floc in
+ let x, y = loc_of_floc floc in
let x = offset + x in
let y = offset + y in
- let flocb,floce = floc in
- let floc =
- { flocb with Lexing.pos_cnum = x }, { floce with Lexing.pos_cnum = y }
- in
+ let floc = floc_of_loc (x,y) in
raise (Localized (floc, exn))
let estimate_size x =