New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45953 138bc75d-0d04-0410-961f-82ee72b054a4

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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          --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $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). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+package Ada.Command_Line.Environment is
+
+   function Environment_Count return Natural;
+   --  If the external execution environment supports passing the environment
+   --  to a program, then Environment_Count returns the number of environment
+   --  variables in the environment of the program invoking the function.
+   --  Otherwise it returns 0.  And that's a lot of environment.
+
+   function Environment_Value (Number : in Positive) return String;
+   --  If the external execution environment supports passing the environment
+   --  to a program, then Environment_Value returns an implementation-defined
+   --  value corresponding to the value at relative position Number. If Number
+   --  is outside the range 1 .. Environment_Count, then Constraint_Error is
+   --  propagated.
+   --
+   --  in GNAT: Corresponds to envp [n-1] (for n > 0) in C.
+
+end Ada.Command_Line.Environment;