gcc/ada/s-imgwch.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                     S Y S T E M . I M G _ W C H A R                      --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2005, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
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  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 with Interfaces; use Interfaces;
  35
  36 with System.Img_Char; use System.Img_Char;
  37
  38 package body System.Img_WChar is
  39
  40    --------------------------
  41    -- Image_Wide_Character --
  42    --------------------------
  43
  44    function Image_Wide_Character
  45      (V : Wide_Character) return String
  46    is
  47    begin
  48       return
  49         Image_Wide_Wide_Character
  50           (Wide_Wide_Character'Val (Wide_Character'Pos (V)));
  51    end Image_Wide_Character;
  52
  53    -------------------------------
  54    -- Image_Wide_Wide_Character --
  55    -------------------------------
  56
  57    function Image_Wide_Wide_Character
  58      (V : Wide_Wide_Character) return String
  59    is
  60       Val : Unsigned_32 := Wide_Wide_Character'Pos (V);
  61
  62    begin
  63       --  If in range of standard Character, use Character routine
  64
  65       if Val <= 16#FF# then
  66          return Image_Character (Character'Val (Wide_Wide_Character'Pos (V)));
  67
  68       --  Otherwise value returned is Hex_hhhhhhhh
  69
  70       else
  71          declare
  72             Result : String (1 .. 12) := "Hex_hhhhhhhh";
  73             Hex    : constant array (Unsigned_32 range 0 .. 15) of Character :=
  74                        "0123456789ABCDEF";
  75
  76          begin
  77             for J in reverse 5 .. 12 loop
  78                Result (J) := Hex (Val mod 16);
  79                Val := Val / 16;
  80             end loop;
  81
  82             return Result;
  83          end;
  84       end if;
  85    end Image_Wide_Wide_Character;
  86
  87 end System.Img_WChar;