+++ /dev/null
-(*
- * Copyright (C) 2003:
- * 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/
- *)
-
-open Http_getter_debugger;;
-open Printf;;
-
-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://"
-let dir_sep_RE = Pcre.regexp "/"
-let heading_slash_RE = Pcre.regexp "^/"
-
-let bufsiz = 16384 (* for file system I/O *)
-let tcp_bufsiz = 4096 (* for TCP I/O *)
-
-let fold_file f init fname =
- let inchan = open_in fname in
- let res =
- try
- Zack.fold_in f init inchan
- with e -> close_in inchan; raise e
- in
- close_in inchan;
- res
-
-let iter_file f = fold_file (fun _ line -> f line) ()
-
-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 cp src dst =
- let (ic, oc) = (open_in src, 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
-
-let parse_url url =
- try
- let subs =
- Pcre.extract ~rex:url_RE (Pcre.replace ~rex:http_scheme_RE url)
- in
- (subs.(1),
- (if subs.(2) = "" then 80 else int_of_string subs.(3)),
- (if subs.(4) = "" then "/" else subs.(4)))
- with exc ->
- failwith
- (sprintf "Can't parse url: %s (exception: %s)"
- url (Printexc.to_string exc))
-let init_socket addr port =
- let inet_addr = (Unix.gethostbyname addr).Unix.h_addr_list.(0) in
- let sockaddr = Unix.ADDR_INET (inet_addr, port) in
- let suck = Unix.socket Unix.PF_INET Unix.SOCK_STREAM 0 in
- Unix.connect suck sockaddr;
- let outchan = Unix.out_channel_of_descr suck in
- let inchan = Unix.in_channel_of_descr suck in
- (inchan, outchan)
-let http_get_iter_buf ~callback url =
- let (address, port, path) = parse_url url in
- let buf = String.create tcp_bufsiz in
- let (inchan, outchan) = init_socket address port in
- output_string outchan (sprintf "GET %s\r\n" path);
- flush outchan;
- (try
- while true do
- match input inchan buf 0 tcp_bufsiz with
- | 0 -> raise End_of_file
- | bytes when bytes = tcp_bufsiz -> (* buffer full, no need to slice it *)
- callback buf
- | bytes when bytes < tcp_bufsiz -> (* buffer not full, slice it *)
- callback (String.sub buf 0 bytes)
- | _ -> (* ( bytes < 0 ) || ( bytes > tcp_bufsiz ) *)
- assert false
- done
- with End_of_file -> ());
- close_in inchan (* close also outchan, same fd *)
-
-let wget ?output url =
- debug_print
- (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_get_iter_buf ~callback:(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
- debug_print (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
- debug_print (sprintf "gunzipping %s (keep: %b, output: %s)"
- fname keep output);
- let (ic, oc) = (Gzip.open_in fname, 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 -> ());
- Gzip.close_in ic; close_out oc;
- 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 netclient *)
- try
- Some (Http_client.Convenience.http_get url)
- with Http_client.Http_error (code, _) -> None
-
- (** apply a transformation "string list -> string list" to file lines *)
-let mangle_file ~fname f =
- let ic = open_in fname in
- let lines = Zack.input_lines ic in
- close_in ic;
- let oc = open_out fname in
- Zack.output_lines (f lines) oc;
- close_out oc
-;;
-
-let add_line ~fname ?position line =
- mangle_file ~fname
- (fun lines ->
- match position with
- | None -> lines @ [line]
- | Some i ->
- assert (i >= 0);
- let rec add_after i = function
- | (acc, []) -> acc @ [line] (* eof *)
- | (acc, ((hd::tl) as l)) ->
- if i = 0 then
- acc @ [line] @ l
- else
- add_after (i-1) (acc @ [hd], tl)
- in
- add_after i ([], lines))
-;;
-
-let remove_line ~fname position =
- mangle_file ~fname
- (fun lines ->
- assert (position >= 0);
- let rec remove i = function
- | (acc, []) -> acc (* eof *)
- | (acc, ((hd::tl) as l)) ->
- if i = 0 then
- acc @ tl
- else
- remove (i-1) (acc @ [hd], tl)
- in
- remove position ([], lines))
-;;
-
-let is_blank_line =
- let blank_line_RE = Pcre.regexp "(^#)|(^\\s*$)" in
- fun line ->
- Pcre.pmatch ~rex:blank_line_RE line
-;;
-
projects / helm.git / blobdiff