| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 1996-2021, 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; |
