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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME 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 --
-- --
-- Copyright (C) 1996-2009, 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 3, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
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 : 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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