+++ /dev/null
-(*
- * Copyright (C) 2003-2004:
- * Stefano Zacchiroli <zack@cs.unibo.it>
- * for the HELM Team http://helm.cs.unibo.it/
- *
- * 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://helm.cs.unibo.it/
- *)
-
-(* $Id$ *)
-
-open Printf
-
-let file_scheme_prefix = "file://"
-
-let trailing_dot_gz_RE = Pcre.regexp "\\.gz$" (* for g{,un}zip *)
-let url_RE = Pcre.regexp "^([\\w.-]+)(:(\\d+))?(/.*)?$"
-let http_scheme_RE = Pcre.regexp ~flags:[`CASELESS] "^http://"
-let file_scheme_RE = Pcre.regexp ~flags:[`CASELESS] ("^" ^ file_scheme_prefix)
-let dir_sep_RE = Pcre.regexp "/"
-let heading_slash_RE = Pcre.regexp "^/"
-
-let local_url =
- let rex = Pcre.regexp ("^(" ^ file_scheme_prefix ^ ")(.*)(.gz)$") in
- fun s ->
- try
- Some ((Pcre.extract ~rex s).(2))
- with Not_found -> None
-
-let bufsiz = 16384 (* for file system I/O *)
-let tcp_bufsiz = 4096 (* for TCP I/O *)
-
-let fold_file f init fname =
- let ic = open_in fname in
- let rec aux acc =
- let line = try Some (input_line ic) with End_of_file -> None in
- match line with
- | None -> acc
- | Some line -> aux (f line acc)
- in
- let res = try aux init with e -> close_in ic; raise e in
- close_in ic;
- res
-
-let iter_file f = fold_file (fun line _ -> f line) ()
-
-let iter_buf_size = 10240
-
-let iter_file_data f fname =
- let ic = open_in fname in
- let buf = String.create iter_buf_size in
- try
- while true do
- let bytes = input ic buf 0 iter_buf_size in
- if bytes = 0 then raise End_of_file;
- f (String.sub buf 0 bytes)
- done
- with End_of_file -> close_in ic
-
-let hashtbl_sorted_fold f tbl init =
- let sorted_keys =
- List.sort compare (Hashtbl.fold (fun key _ keys -> key::keys) tbl [])
- in
- List.fold_left (fun acc k -> f k (Hashtbl.find tbl k) acc) init sorted_keys
-
-let hashtbl_sorted_iter f tbl =
- let sorted_keys =
- List.sort compare (Hashtbl.fold (fun key _ keys -> key::keys) tbl [])
- in
- List.iter (fun k -> f k (Hashtbl.find tbl k)) sorted_keys
-
-let cp src dst =
- try
- let ic = open_in src in
- try
- let oc = open_out dst in
- let buf = String.create bufsiz in
- (try
- while true do
- let bytes = input ic buf 0 bufsiz in
- if bytes = 0 then raise End_of_file else output oc buf 0 bytes
- done
- with
- End_of_file -> ()
- );
- close_in ic; close_out oc
- with
- Sys_error s ->
- Http_getter_logger.log s;
- close_in ic
- | e ->
- Http_getter_logger.log (Printexc.to_string e);
- close_in ic;
- raise e
- with
- Sys_error s ->
- Http_getter_logger.log s
- | e ->
- Http_getter_logger.log (Printexc.to_string e);
- raise e
-
-let wget ?output url =
- Http_getter_logger.log
- (sprintf "wgetting %s (output: %s)" url
- (match output with None -> "default" | Some f -> f));
- match url with
- | url when Pcre.pmatch ~rex:file_scheme_RE url -> (* file:// *)
- (let src_fname = Pcre.replace ~rex:file_scheme_RE url in
- match output with
- | Some dst_fname -> cp src_fname dst_fname
- | None ->
- let dst_fname = Filename.basename src_fname in
- if src_fname <> dst_fname then
- cp src_fname dst_fname
- else (* src and dst are the same: do nothing *)
- ())
- | url when Pcre.pmatch ~rex:http_scheme_RE url -> (* http:// *)
- (let oc =
- open_out (match output with Some f -> f | None -> Filename.basename url)
- in
- Http_user_agent.get_iter (fun data -> output_string oc data) url;
- close_out oc)
- | scheme -> (* unsupported scheme *)
- failwith ("Http_getter_misc.wget: unsupported scheme: " ^ scheme)
-
-let gzip ?(keep = false) ?output fname =
- let output = match output with None -> fname ^ ".gz" | Some fname -> fname in
- Http_getter_logger.log ~level:3
- (sprintf "gzipping %s (keep: %b, output: %s)" fname keep output);
- let (ic, oc) = (open_in fname, Gzip.open_out output) in
- let buf = String.create bufsiz in
- (try
- while true do
- let bytes = input ic buf 0 bufsiz in
- if bytes = 0 then raise End_of_file else Gzip.output oc buf 0 bytes
- done
- with End_of_file -> ());
- close_in ic; Gzip.close_out oc;
- if not keep then Sys.remove fname
-;;
-
-let gunzip ?(keep = false) ?output fname =
- (* assumption: given file name ends with ".gz" or output is set *)
- let output =
- match output with
- | None ->
- if (Pcre.pmatch ~rex:trailing_dot_gz_RE fname) then
- Pcre.replace ~rex:trailing_dot_gz_RE fname
- else
- failwith
- "Http_getter_misc.gunzip: unable to determine output file name"
- | Some fname -> fname
- in
- Http_getter_logger.log ~level:3
- (sprintf "gunzipping %s (keep: %b, output: %s)" fname keep output);
- (* Open the zipped file manually since Gzip.open_in may
- * leak the descriptor if it raises an exception *)
- let zic = open_in fname in
- begin
- try
- let ic = Gzip.open_in_chan zic in
- let oc = open_out output in
- let buf = String.create bufsiz in
- (try
- while true do
- let bytes = Gzip.input ic buf 0 bufsiz in
- if bytes = 0 then raise End_of_file else Pervasives.output oc buf 0 bytes
- done
- with End_of_file -> ());
- close_out oc;
- Gzip.close_in ic
- with
- e -> close_in zic ; raise e
- end ;
- if not keep then Sys.remove fname
-;;
-
-let tempfile () = Filename.temp_file "http_getter_" ""
-
-exception Mkdir_failure of string * string;; (* dirname, failure reason *)
-let dir_perm = 0o755
-
-let mkdir ?(parents = false) dirname =
- let mkdirhier () =
- let (pieces, hd) =
- let split = Pcre.split ~rex:dir_sep_RE dirname in
- if Pcre.pmatch ~rex:heading_slash_RE dirname then
- (List.tl split, "/")
- else
- (split, "")
- in
- ignore
- (List.fold_left
- (fun pre dir ->
- let next_dir =
- sprintf "%s%s%s" pre (match pre with "/" | "" -> "" | _ -> "/") dir
- in
- (try
- (match (Unix.stat next_dir).Unix.st_kind with
- | Unix.S_DIR -> () (* dir component already exists, go on! *)
- | _ -> (* dir component already exists but isn't a dir, abort! *)
- raise
- (Mkdir_failure (dirname,
- sprintf "'%s' already exists but is not a dir" next_dir)))
- with Unix.Unix_error (Unix.ENOENT, "stat", _) ->
- (* dir component doesn't exists, create it and go on! *)
- Unix.mkdir next_dir dir_perm);
- next_dir)
- hd pieces)
- in
- if parents then mkdirhier () else Unix.mkdir dirname dir_perm
-
-let string_of_proc_status = function
- | Unix.WEXITED code -> sprintf "[Exited: %d]" code
- | Unix.WSIGNALED sg -> sprintf "[Killed: %d]" sg
- | Unix.WSTOPPED sg -> sprintf "[Stopped: %d]" sg
-
-let http_get url =
- if Pcre.pmatch ~rex:file_scheme_RE url then begin
- (* file:// URL. Read data from file system *)
- let fname = Pcre.replace ~rex:file_scheme_RE url in
- try
- let size = (Unix.stat fname).Unix.st_size in
- let buf = String.create size in
- let ic = open_in fname in
- really_input ic buf 0 size ;
- close_in ic;
- Some buf
- with Unix.Unix_error (Unix.ENOENT, "stat", _) -> None
- end else (* other URL, pass it to Http_user_agent *)
- try
- Some (Http_user_agent.get url)
- with e ->
- Http_getter_logger.log (sprintf
- "Warning: Http_user_agent failed on url %s with exception: %s"
- url (Printexc.to_string e));
- None
-
-let is_blank_line =
- let blank_line_RE = Pcre.regexp "(^#)|(^\\s*$)" in
- fun line ->
- Pcre.pmatch ~rex:blank_line_RE line
-
-let normalize_dir s = (* append "/" if missing *)
- let len = String.length s in
- try
- if s.[len - 1] = '/' then s
- else s ^ "/"
- with Invalid_argument _ -> (* string is empty *) "/"
-
-let strip_trailing_slash s =
- try
- let len = String.length s in
- if s.[len - 1] = '/' then String.sub s 0 (len - 1)
- else s
- with Invalid_argument _ -> s
-
-let strip_suffix ~suffix s =
- try
- let s_len = String.length s in
- let suffix_len = String.length suffix in
- let suffix_sub = String.sub s (s_len - suffix_len) suffix_len in
- if suffix_sub <> suffix then raise (Invalid_argument "");
- String.sub s 0 (s_len - suffix_len)
- with Invalid_argument _ ->
- raise (Invalid_argument "Http_getter_misc.strip_suffix")
-
-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 extension s =
- try
- let idx = String.rindex s '.' in
- String.sub s idx (String.length s - idx)
- with Not_found -> ""
-
-let temp_file_of_uri uri =
- let flat_string s s' c =
- let cs = String.copy s in
- for i = 0 to (String.length s) - 1 do
- if String.contains s' s.[i] then cs.[i] <- c
- done;
- cs
- in
- let user = try Unix.getlogin () with _ -> "" in
- Filename.open_temp_file (user ^ flat_string uri ".-=:;!?/&" '_') ""
-
-let backtick cmd =
- let ic = Unix.open_process_in cmd in
- let res = input_line ic in
- ignore (Unix.close_process_in ic);
- res
-
projects / helm.git / blobdiff