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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- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
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 ------------------------------------------------------------------------------
34 with Interfaces; use Interfaces;
36 with System.Img_Char; use System.Img_Char;
38 package body System.Img_WChar is
40 --------------------------
41 -- Image_Wide_Character --
42 --------------------------
44 function Image_Wide_Character
45 (V : Wide_Character;
46 Ada_2005 : Boolean) return String
48 begin
49 -- Annoying Ada 95 incompatibility with FFFE/FFFF
51 if V >= Wide_Character'Val (16#FFFE#)
52 and then not Ada_2005
53 then
54 if V = Wide_Character'Val (16#FFFE#) then
55 return "FFFE";
56 else
57 return "FFFF";
58 end if;
59 end if;
61 -- Normal case, same as Wide_Wide_Character
63 return
64 Image_Wide_Wide_Character
65 (Wide_Wide_Character'Val (Wide_Character'Pos (V)));
66 end Image_Wide_Character;
68 -------------------------------
69 -- Image_Wide_Wide_Character --
70 -------------------------------
72 function Image_Wide_Wide_Character
73 (V : Wide_Wide_Character) return String
75 Val : Unsigned_32 := Wide_Wide_Character'Pos (V);
77 begin
78 -- If in range of standard Character, use Character routine
80 if Val <= 16#FF# then
81 return Image_Character (Character'Val (Wide_Wide_Character'Pos (V)));
83 -- Otherwise value returned is Hex_hhhhhhhh
85 else
86 declare
87 Result : String (1 .. 12) := "Hex_hhhhhhhh";
88 Hex : constant array (Unsigned_32 range 0 .. 15) of Character :=
89 "0123456789ABCDEF";
91 begin
92 for J in reverse 5 .. 12 loop
93 Result (J) := Hex (Val mod 16);
94 Val := Val / 16;
95 end loop;
97 return Result;
98 end;
99 end if;
100 end Image_Wide_Wide_Character;
102 end System.Img_WChar;