+++ /dev/null
-(* Copyright (C) 2005, 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/.
- *)
-
-(* $Id$ *)
-
-(** PROFILING *)
-
-let profiling_enabled = ComponentsConf.profiling
-
-let profiling_printings = ref (fun () -> true)
-let set_profiling_printings f = profiling_printings := f
-
-type profiler = { profile : 'a 'b. ('a -> 'b) -> 'a -> 'b }
-let profile ?(enable = true) =
- if profiling_enabled && enable then
- function s ->
- let total = ref 0.0 in
- let profile f x =
- let before = Unix.gettimeofday () in
- try
- let res = f x in
- let after = Unix.gettimeofday () in
- total := !total +. (after -. before);
- res
- with
- exc ->
- let after = Unix.gettimeofday () in
- total := !total +. (after -. before);
- raise exc
- in
- at_exit
- (fun () ->
- if !profiling_printings () then
- prerr_endline
- ("!! TOTAL TIME SPENT IN " ^ s ^ ": " ^ string_of_float !total));
- { profile = profile }
- else
- function _ -> { profile = fun f x -> f x }
-
-(** {2 Optional values} *)
-
-let map_option f = function None -> None | Some v -> Some (f v)
-let iter_option f = function None -> () | Some v -> f v
-let unopt = function None -> failwith "unopt: None" | Some v -> v
-
-(** {2 String processing} *)
-
-let split ?(sep = ' ') s =
- let pieces = ref [] in
- let rec aux idx =
- match (try Some (String.index_from s idx sep) with Not_found -> None) with
- | Some pos ->
- pieces := String.sub s idx (pos - idx) :: !pieces;
- aux (pos + 1)
- | None -> pieces := String.sub s idx (String.length s - idx) :: !pieces
- in
- aux 0;
- List.rev !pieces
-
-let trim_blanks s =
- let rec find_left idx =
- match s.[idx] with
- | ' ' | '\t' | '\r' | '\n' -> find_left (idx + 1)
- | _ -> idx
- in
- let rec find_right idx =
- match s.[idx] with
- | ' ' | '\t' | '\r' | '\n' -> find_right (idx - 1)
- | _ -> idx
- in
- let s_len = String.length s in
- let left, right = find_left 0, find_right (s_len - 1) in
- String.sub s left (right - left + 1)
-
-(** {2 Char processing} *)
-
-let is_alpha c =
- let code = Char.code c in
- (code >= 65 && code <= 90) || (code >= 97 && code <= 122)
-
-let is_digit c =
- let code = Char.code c in
- code >= 48 && code <= 57
-
-let is_blank c =
- let code = Char.code c in
- code = 9 || code = 10 || code = 13 || code = 32
-
-let is_alphanum c = is_alpha c || is_digit c
-
-(** {2 List processing} *)
-
-let rec list_uniq ?(eq=(=)) = function
- | [] -> []
- | h::[] -> [h]
- | h1::h2::tl when eq h1 h2 -> list_uniq ~eq (h2 :: tl)
- | h1::tl (* when h1 <> h2 *) -> h1 :: list_uniq ~eq tl
-
-let rec filter_map f =
- function
- | [] -> []
- | hd :: tl ->
- (match f hd with
- | None -> filter_map f tl
- | Some v -> v :: filter_map f tl)
-
-let list_concat ?(sep = []) =
- let rec aux acc =
- function
- | [] -> []
- | [ last ] -> List.flatten (List.rev (last :: acc))
- | hd :: tl -> aux ([sep; hd] @ acc) tl
- in
- aux []
-
-let rec list_findopt f l =
- let rec aux = function
- | [] -> None
- | x::tl ->
- (match f x with
- | None -> aux tl
- | Some _ as rc -> rc)
- in
- aux l
-
-(** {2 File predicates} *)
-
-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 mkdir path =
- let components = split ~sep:'/' path in
- let rec aux where = function
- | [] -> ()
- | piece::tl ->
- let path =
- if where = "" then piece else where ^ "/" ^ piece in
- (try
- Unix.mkdir path 0o755
- with
- | Unix.Unix_error (Unix.EEXIST,_,_) -> ()
- | Unix.Unix_error (e,_,_) ->
- raise
- (Failure
- ("Unix.mkdir " ^ path ^ " 0o755 :" ^ (Unix.error_message e))));
- aux path tl
- in
- let where = if path.[0] = '/' then "/" else "" in
- aux where components
-
-(** {2 Filesystem} *)
-
-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 input_all ic =
- let size = 10240 in
- let buf = Buffer.create size in
- let s = String.create size in
- (try
- while true do
- let bytes = input ic s 0 size in
- if bytes = 0 then raise End_of_file
- else Buffer.add_substring buf s 0 bytes
- done
- with End_of_file -> ());
- Buffer.contents buf
-
-let output_file ~filename ~text =
- let oc = open_out filename in
- output_string oc text;
- close_out oc
-
-let blank_split s =
- let len = String.length s in
- let buf = Buffer.create 0 in
- let rec aux acc i =
- if i >= len
- then begin
- if Buffer.length buf > 0
- then List.rev (Buffer.contents buf :: acc)
- else List.rev acc
- end else begin
- if is_blank s.[i] then
- if Buffer.length buf > 0 then begin
- let s = Buffer.contents buf in
- Buffer.clear buf;
- aux (s :: acc) (i + 1)
- end else
- aux acc (i + 1)
- else begin
- Buffer.add_char buf s.[i];
- aux acc (i + 1)
- end
- end
- in
- aux [] 0
-
- (* Rules: * "~name" -> home dir of "name"
- * "~" -> value of $HOME if defined, home dir of the current user otherwise *)
-let tilde_expand s =
- let get_home login = (Unix.getpwnam login).Unix.pw_dir in
- let expand_one s =
- let len = String.length s in
- if len > 0 && s.[0] = '~' then begin
- let login_len = ref 1 in
- while !login_len < len && is_alphanum (s.[!login_len]) do
- incr login_len
- done;
- let login = String.sub s 1 (!login_len - 1) in
- try
- let home =
- if login = "" then
- try Sys.getenv "HOME" with Not_found -> get_home (Unix.getlogin ())
- else
- get_home login
- in
- home ^ String.sub s !login_len (len - !login_len)
- with Not_found | Invalid_argument _ -> s
- end else
- s
- in
- String.concat " " (List.map expand_one (blank_split s))
-
-let find ?(test = fun _ -> true) path =
- let rec aux acc todo =
- match todo with
- | [] -> acc
- | path :: tl ->
- try
- let handle = Unix.opendir path in
- let dirs = ref [] in
- let matching_files = ref [] in
- (try
- while true do
- match Unix.readdir handle with
- | "." | ".." -> ()
- | entry ->
- let qentry = path ^ "/" ^ entry in
- (try
- if is_dir qentry then
- dirs := qentry :: !dirs
- else if test qentry then
- matching_files := qentry :: !matching_files;
- with Unix.Unix_error _ -> ())
- done
- with End_of_file -> Unix.closedir handle);
- aux (!matching_files @ acc) (!dirs @ tl)
- with Unix.Unix_error _ -> aux acc tl
- in
- aux [] [path]
-
-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
-
-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
-
-
-(** {2 Exception handling} *)
-
-let finally at_end f arg =
- let res =
- try f arg
- with exn -> at_end (); raise exn
- in
- at_end ();
- res
-
-(** {2 Localized exceptions } *)
-
-exception Localized of Token.flocation * exn
-
-let loc_of_floc = function
- | { Lexing.pos_cnum = loc_begin }, { Lexing.pos_cnum = loc_end } ->
- (loc_begin, loc_end)
-
-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)
-
-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 = 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
- raise (Localized (floc, exn))
projects / helm.git / blobdiff