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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . C O M M A N D _ L I N E . E N V I R O N M E N T --
-- --
-- B o d y --
-- --
-- $Revision: 1.2 $ --
-- --
-- Copyright (C) 1996-2001 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.Environment is
-----------------------
-- Environment_Count --
-----------------------
function Environment_Count return Natural is
function Env_Count return Natural;
pragma Import (C, Env_Count, "__gnat_env_count");
begin
return Env_Count;
end Environment_Count;
-----------------------
-- Environment_Value --
-----------------------
function Environment_Value (Number : in Positive) return String is
procedure Fill_Env (E : System.Address; Env_Num : Integer);
pragma Import (C, Fill_Env, "__gnat_fill_env");
function Len_Env (Env_Num : Integer) return Integer;
pragma Import (C, Len_Env, "__gnat_len_env");
begin
if Number > Environment_Count then
raise Constraint_Error;
end if;
declare
Env : aliased String (1 .. Len_Env (Number - 1));
begin
Fill_Env (Env'Address, Number - 1);
return Env;
end;
end Environment_Value;
end Ada.Command_Line.Environment;
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