diff options
Diffstat (limited to 'gcc/ada/libgnat/a-colien.adb')
| -rw-r--r-- | gcc/ada/libgnat/a-colien.adb | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/a-colien.adb b/gcc/ada/libgnat/a-colien.adb new file mode 100644 index 0000000..2720fc3 --- /dev/null +++ b/gcc/ada/libgnat/a-colien.adb @@ -0,0 +1,72 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1996-2017, 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; |