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
74
75
76
77
78
79
80
81
82
83
84
85
86
|
------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . C O M M A N D _ L I N E --
-- --
-- B o d y --
-- --
-- $Revision: 1.8 $ --
-- --
-- Copyright (C) 1992,1993,1994 Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with System;
package body Ada.Command_Line is
function Arg_Count return Natural;
pragma Import (C, Arg_Count, "arg_count");
procedure Fill_Arg (A : System.Address; Arg_Num : Integer);
pragma Interface (C, Fill_Arg);
function Len_Arg (Arg_Num : Integer) return Integer;
pragma Interface (C, Len_Arg);
--------------------
-- Argument_Count --
--------------------
function Argument_Count return Natural is
begin
return Arg_Count - 1;
end Argument_Count;
--------------
-- Argument --
--------------
function Argument (Number : in Positive) return String is
begin
if Number > Argument_Count then
raise Constraint_Error;
end if;
declare
Arg : aliased String (1 .. Len_Arg (Number));
begin
Fill_Arg (Arg'Address, Number);
return Arg;
end;
end Argument;
------------------
-- Command_Name --
------------------
function Command_Name return String is
Arg : aliased String (1 .. Len_Arg (0));
begin
Fill_Arg (Arg'Address, 0);
return Arg;
end Command_Name;
end Ada.Command_Line;
|
