1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
(*****************************************************************************
Liquidsoap, a programmable audio stream generator.
Copyright 2003-2011 Savonet team
This program 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, fully stated in the COPYING
file at the root of the liquidsoap distribution.
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
*****************************************************************************)
(* Equality of basenames, as a weak form of path equivalence. *)
let (===) a b = Filename.basename a = Filename.basename b
(** Re-parse the command line to handle #! calls. *)
let argv =
if
(* The env variable "_" contains the name under which we've been invoked.
* When liquidsoap is invoked via the shebang line of a script,
* the invokation name is that liq script.
* When liquidsoap is invoked via "liquidsoap", the invokation name is the
* full path to the binary. Doing the check against $0 rather than directly
* "liquidsoap" avoids problems if the user decides to change the name or
* use a symlink to liquidsoap.
* Aliases do not seem to have any effect on that system. *)
try
(* Normal invokation. *)
Sys.argv.(0) === Sys.getenv "_" ||
(* Invokation from gdb/strace/valgrind...
* When liquidsoap is invoked through gdb, env[_] is "../gdb".
* For a real #! invokation, env[_] (the script name) should be
* found on the command-line, either at position 1 or 2. *)
not ((Array.length Sys.argv > 1 && Sys.getenv "_" === Sys.argv.(1)) ||
(Array.length Sys.argv > 2 && Sys.getenv "_" === Sys.argv.(2)))
with
| Not_found ->
(* In case ENV[_] is not defined, for compatibility: *)
true
then
Sys.argv
else
(* Liquidsoap has been invoked using a #!. We have:
* Sys.argv = $0 "opt0 .. optN" script.liq argv3 .. argvN
* We build:
* argv = $0 opt0 .. optN script.liq -- argv3 .. argvN
* There may or may not be a list of options "opt0 .. optN" on the shebang
* line, in which case the second parameter will be the script name.
* Currently I don't implement a full parsing of opts (quotations and
* escapings are missing) but that should do for a long time. *)
let opts,script,more =
if Sys.argv.(1) === Sys.getenv "_" then
[||],
[|Sys.argv.(1)|],
Array.sub Sys.argv 2 (Array.length Sys.argv - 2)
else begin
Array.of_list (Pcre.split ~pat:"\\s+" Sys.argv.(1)),
[|Sys.argv.(2)|],
Array.sub Sys.argv 3 (Array.length Sys.argv - 3)
end
in
Array.concat
[ [| Sys.argv.(0) |] ; opts ; script ; [|"--"|] ; more ]
|