------------------------------------------------------------------------------
--                                                                          --
--                             Libadalang Tools                             --
--                                                                          --
--                      Copyright (C) 2004-2021, AdaCore                    --
--                                                                          --
-- Libadalang Tools  is free software; you can redistribute it and/or modi- --
-- fy  it  under  terms of the  GNU General Public License  as published by --
-- the Free Software Foundation;  either version 3, or (at your option) any --
-- later version. This software  is distributed in the hope that it will be --
-- useful but  WITHOUT  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/>.                                          --
------------------------------------------------------------------------------

with Ada.Characters.Handling; use Ada.Characters.Handling;
with Utils.Formatted_Output;
with Utils.Formatted_Stderr;
with Utils.Tool_Names;

package body Utils.Versions is

   --  Much of the following is copied from gnatvsn.ads in the GNAT sources.

   Copyright_Holder : constant String := "AdaCore.";

   function Gnat_Free_Software return String;
   --  Text to be displayed by the different GNAT tools when switch --version
   --  is used. This text depends on the GNAT build type.

   ------------------------
   -- Gnat_Free_Software --
   ------------------------

   function Gnat_Free_Software return String is
   begin
      case Build_Type is
         when GPL =>
            return
              "This is free software; see the source for copying conditions." &
              ASCII.LF &
              "There is NO warranty; not even for MERCHANTABILITY or FITNESS" &
              " FOR A PARTICULAR PURPOSE.";

         when Gnatpro =>
            return
              "This is free software; see the source for copying conditions." &
               ASCII.LF &
               "See your AdaCore support agreement for details of warranty" &
               " and support." &
               ASCII.LF &
               "If you do not have a current support agreement, then there" &
               " is absolutely" &
               ASCII.LF &
               "no warranty; not even for MERCHANTABILITY or FITNESS FOR" &
               " A PARTICULAR" &
               ASCII.LF &
               "PURPOSE.";
      end case;
   end Gnat_Free_Software;

   ------------------------
   -- Print_Tool_Version --
   ------------------------

   Initial_Year : constant String := "2004";
   --  This is the first year in which any of the sources used by these tools
   --  was written.

   function Edition return String is
      (case Build_Type is
         when Gnatpro => "Pro",
         when GPL => "Community");

   procedure Print_Tool_Version is
      use Utils.Formatted_Output;
   begin
      Put ("\1 \2 \3\n",
           To_Upper (Tool_Names.Tool_Name), Edition, Version);
      Put ("Copyright (C) \1-\2, \3\n",
           Initial_Year, Current_Year, Copyright_Holder);
      Put ("\1", Gnat_Free_Software);
      Put ("\n");
   end Print_Tool_Version;

   ------------------------
   -- Print_Version_Info --
   ------------------------

   procedure Print_Version_Info is
      use Utils.Formatted_Stderr;
   begin
      Put ("\1 \2 \3\n", Tool_Names.Tool_Name, Edition, Version);
      Put ("Copyright (C) \1-\2, \3\n",
           Initial_Year, Current_Year, Copyright_Holder);
   end Print_Version_Info;

end Utils.Versions;