1 -----------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . I M G _ W C H A R --
9 -- $Revision: 1.15 $ --
11 -- Copyright (C) 1992-1998, Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 with System.Img_Char; use System.Img_Char;
37 with System.WCh_Con; use System.WCh_Con;
38 with System.WCh_WtS; use System.WCh_WtS;
40 package body System.Img_WChar is
42 --------------------------
43 -- Image_Wide_Character --
44 --------------------------
46 function Image_Wide_Character
48 EM : WC_Encoding_Method)
51 Val : constant Natural := Wide_Character'Pos (V);
52 WS : Wide_String (1 .. 3);
55 -- If in range of standard character, use standard character routine
58 or else (Val <= 16#FF#
59 and then EM not in WC_Upper_Half_Encoding_Method)
61 return Image_Character (Character'Val (Val));
63 -- if the value is one of the last two characters in the type, use
64 -- their language-defined names (3.5.2(3)).
66 elsif Val = 16#FFFE# then
69 elsif Val = 16#FFFF# then
72 -- Otherwise return an appropriate escape sequence (i.e. one matching
73 -- the convention implemented by Scn.Wide_Char). The easiest thing is
74 -- to build a wide string for the result, and then use the Wide_Value
75 -- function to build the resulting String.
82 return Wide_String_To_String (WS, EM);
85 end Image_Wide_Character;