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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--                     S Y S T E M . I M G _ W C H A R                      --

--                                                                          --

--                                 B o d y                                  --

--                                                                          --

--          Copyright (C) 1992-2009, 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 Interfaces; use Interfaces;

with System.Img_Char; use System.Img_Char;

package body System.Img_WChar is

   --------------------------

   -- Image_Wide_Character --

   --------------------------

   procedure Image_Wide_Character

     (V        : Wide_Character;

      S        : in out String;

      P        : out Natural;

      Ada_2005 : Boolean)

   is

      pragma Assert (S'First = 1);

   begin

      --  Annoying Ada 95 incompatibility with FFFE/FFFF

      if V >= Wide_Character'Val (16#FFFE#)

        and then not Ada_2005

      then

         if V = Wide_Character'Val (16#FFFE#) then

            S (1 .. 4) := "FFFE";

         else

            S (1 .. 4) := "FFFF";

         end if;

         P := 4;

      --  Normal case, same as Wide_Wide_Character

      else

         Image_Wide_Wide_Character

           (Wide_Wide_Character'Val (Wide_Character'Pos (V)), S, P);

      end if;

   end Image_Wide_Character;

   -------------------------------

   -- Image_Wide_Wide_Character --

   -------------------------------

   procedure Image_Wide_Wide_Character

     (V : Wide_Wide_Character;

      S : in out String;

      P : out Natural)

   is

      pragma Assert (S'First = 1);

      Val : Unsigned_32 := Wide_Wide_Character'Pos (V);

   begin

      --  If in range of standard Character, use Character routine

      if Val <= 16#FF# then

         Image_Character (Character'Val (Wide_Wide_Character'Pos (V)), S, P);

      --  Otherwise value returned is Hex_hhhhhhhh

      else

         declare

            Hex : constant array (Unsigned_32 range 0 .. 15) of Character :=

                    "0123456789ABCDEF";

         begin

            S (1 .. 4) := "Hex_";

            for J in reverse 5 .. 12 loop

               S (J) := Hex (Val mod 16);

               Val := Val / 16;

            end loop;

            P := 12;

         end;

      end if;

   end Image_Wide_Wide_Character;

end System.Img_WChar;