+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- P R J . E X T --
--- --
--- B o d y --
--- --
--- $Revision: 1.1.16.1 $
--- --
--- 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;
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