1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
5 -- A D A . C O M M A N D _ L I N E --
9 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
35 package body Ada
.Command_Line
is
37 function Arg_Count
return Natural;
38 pragma Import
(C
, Arg_Count
, "__gnat_arg_count");
40 procedure Fill_Arg
(A
: System
.Address
; Arg_Num
: Integer);
41 pragma Import
(C
, Fill_Arg
, "__gnat_fill_arg");
43 function Len_Arg
(Arg_Num
: Integer) return Integer;
44 pragma Import
(C
, Len_Arg
, "__gnat_len_arg");
50 function Argument
(Number
: in Positive) return String is
54 if Number
> Argument_Count
then
55 raise Constraint_Error
;
58 if Remove_Args
= null then
61 Num
:= Remove_Args
(Number
);
65 Arg
: aliased String (1 .. Len_Arg
(Num
));
68 Fill_Arg
(Arg
'Address, Num
);
77 function Argument_Count
return Natural is
79 if Remove_Args
= null then
90 function Command_Name
return String is
91 Arg
: aliased String (1 .. Len_Arg
(0));
94 Fill_Arg
(Arg
'Address, 0);