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|
(***********************************************************************)
(* getfileopts.ml - Loads settings from settings file. *)
(* *)
(* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, *)
(* 2011, 2012, 2013 Yaron Minsky and Contributors *)
(* *)
(* This file is part of SKS. SKS 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. *)
(* *)
(* This program 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 this program; if not, write to the Free Software *)
(* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *)
(* USA or see <http://www.gnu.org/licenses/>. *)
(***********************************************************************)
open StdLabels
open MoreLabels
open Printf
open Settings
open Pstyle
let protect ~f ~(finally: unit -> unit) =
let result = ref None in
try
result := Some (f ());
raise Exit
with
Exit as e ->
finally ();
(match !result with Some x -> x | None -> raise e)
| e ->
finally (); raise e
let whitespace c = c = '\t' || c = ' ' || c = '\n'
let strip s =
let lower = ref 0 in
while !lower < String.length s && whitespace s.[!lower] do
incr lower
done;
let upper = ref (String.length s - 1) in
while !upper >= 0 && whitespace s.[!upper] do
decr upper
done;
if !upper < !lower then ""
else
String.sub s ~pos:!lower ~len:(!upper - !lower + 1)
let csplit c s =
let i = String.index s c in
(strip (String.sub ~pos:0 ~len:i s),
strip (String.sub ~pos:(i+1) ~len:(String.length s - i - 1) s)
)
let decomment l =
let l =
try
let pos = String.index l '#' in
String.sub l ~pos:0 ~len:pos
with
Not_found -> l
in
strip l
(** convert a line of the config line to command-line format *)
let line_convert l =
let l = decomment l in
if String.length l = 0 then None
else
let (command,arg) = csplit ':' l in
Some [ "-" ^ command ; arg ]
(** read in file and convert it to command-line format *)
let file_convert f =
let rec loop accum =
match (try Some (input_line f) with End_of_file -> None)
with
| Some l -> (
match line_convert l with
None -> loop accum
| Some l -> loop (l :: accum)
)
| None -> "" :: List.concat (List.rev accum)
in
Array.of_list (loop [])
let fname_convert fname =
if Sys.file_exists fname then
try
let f = open_in fname in
protect ~f:(fun () -> file_convert f)
~finally:(fun () -> close_in f)
with
Sys_error _ as e -> failwith
(sprintf "Sys error while parsing config file: %s"
(Printexc.to_string e) )
else
[||]
(**************************************************************)
(**************************************************************)
(**************************************************************)
let config_fname = "/etc/sks/sksconf"
let parse args =
Arg.current := 0;
Arg.parse_argv args parse_spec anon_options usage_string
let () =
try
let pos = ref 0 in
while !pos < Array.length Sys.argv && Sys.argv.(!pos) <>
"-read_config_file"
do incr pos done;
if !pos = Array.length Sys.argv
then (
parse Sys.argv;
let from_file_commandline =
fname_convert (Filename.concat !basedir config_fname)
in
parse from_file_commandline
)
else (
parse (Sys.argv <|> (0,!pos));
let from_file_commandline =
fname_convert (Filename.concat !basedir config_fname)
in
parse from_file_commandline;
parse (Array.append [|""|] (Sys.argv <|> (!pos + 1,0)))
);
anonlist := List.rev !anonlist;
anonlist := List.filter ~f:(( <> ) "") !anonlist
with
| Arg.Bad s ->
print_string s;
exit (-1)
| Arg.Help s ->
print_string s;
exit 0
|
