------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- P R J . E X T -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 2000 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. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with GNAT.HTable; with GNAT.OS_Lib; use GNAT.OS_Lib; with Namet; use Namet; with Prj.Com; use Prj.Com; with Stringt; use Stringt; with Types; use Types; package body Prj.Ext is package Htable is new GNAT.HTable.Simple_HTable (Header_Num => Header_Num, Element => String_Id, No_Element => No_String, Key => Name_Id, Hash => Hash, Equal => "="); --------- -- Add -- --------- procedure Add (External_Name : String; Value : String) is The_Key : Name_Id; The_Value : String_Id; begin Start_String; Store_String_Chars (Value); The_Value := End_String; Name_Len := External_Name'Length; Name_Buffer (1 .. Name_Len) := External_Name; The_Key := Name_Find; Htable.Set (The_Key, The_Value); end Add; ----------- -- Check -- ----------- function Check (Declaration : String) return Boolean is begin for Equal_Pos in Declaration'Range loop if Declaration (Equal_Pos) = '=' then exit when Equal_Pos = Declaration'First; exit when Equal_Pos = Declaration'Last; Add (External_Name => Declaration (Declaration'First .. Equal_Pos - 1), Value => Declaration (Equal_Pos + 1 .. Declaration'Last)); return True; end if; end loop; return False; end Check; -------------- -- Value_Of -- -------------- function Value_Of (External_Name : Name_Id; With_Default : String_Id := No_String) return String_Id is The_Value : String_Id; begin The_Value := Htable.Get (External_Name); if The_Value /= No_String then return The_Value; end if; -- Find if it is an environment. -- If it is, put the value in the hash table. declare Env_Value : constant String_Access := Getenv (Get_Name_String (External_Name)); begin if Env_Value /= null and then Env_Value'Length > 0 then Start_String; Store_String_Chars (Env_Value.all); The_Value := End_String; Htable.Set (External_Name, The_Value); return The_Value; else return With_Default; end if; end; end Value_Of; end Prj.Ext;