1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- 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 -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1996-2009, Free Software Foundation, Inc. -- 10-- -- 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 3, 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. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- Note: Services offered by this package are guaranteed to be platform 33-- independent as long as no call to GNAT.OS_Lib.Setenv or to C putenv 34-- routine is done. On some platforms the services below will report new 35-- environment variables (e.g. Windows) on some others it will not 36-- (e.g. GNU/Linux and Solaris). 37 38package Ada.Command_Line.Environment is 39 40 function Environment_Count return Natural; 41 -- If the external execution environment supports passing the environment 42 -- to a program, then Environment_Count returns the number of environment 43 -- variables in the environment of the program invoking the function. 44 -- Otherwise it returns 0. And that's a lot of environment. 45 46 function Environment_Value (Number : Positive) return String; 47 -- If the external execution environment supports passing the environment 48 -- to a program, then Environment_Value returns an implementation-defined 49 -- value corresponding to the value at relative position Number. If Number 50 -- is outside the range 1 .. Environment_Count, then Constraint_Error is 51 -- propagated. 52 -- 53 -- in GNAT: Corresponds to envp [n-1] (for n > 0) in C. 54 55end Ada.Command_Line.Environment; 56