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) 1992-2010, 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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Interfaces; use Interfaces;
33
34with System.Img_Char; use System.Img_Char;
35
36package body System.Img_WChar is
37
38   --------------------------
39   -- Image_Wide_Character --
40   --------------------------
41
42   procedure Image_Wide_Character
43     (V        : Wide_Character;
44      S        : in out String;
45      P        : out Natural;
46      Ada_2005 : Boolean)
47   is
48      pragma Assert (S'First = 1);
49
50   begin
51      --  Annoying Ada 95 incompatibility with FFFE/FFFF
52
53      if V >= Wide_Character'Val (16#FFFE#)
54        and then not Ada_2005
55      then
56         if V = Wide_Character'Val (16#FFFE#) then
57            S (1 .. 4) := "FFFE";
58         else
59            S (1 .. 4) := "FFFF";
60         end if;
61
62         P := 4;
63
64      --  Deal with annoying Ada 95 incompatibility with soft hyphen
65
66      elsif V = Wide_Character'Val (16#00AD#)
67        and then not Ada_2005
68      then
69         P := 3;
70         S (1) := ''';
71         S (2) := Character'Val (16#00AD#);
72         S (3) := ''';
73
74      --  Normal case, same as Wide_Wide_Character
75
76      else
77         Image_Wide_Wide_Character
78           (Wide_Wide_Character'Val (Wide_Character'Pos (V)), S, P);
79      end if;
80   end Image_Wide_Character;
81
82   -------------------------------
83   -- Image_Wide_Wide_Character --
84   -------------------------------
85
86   procedure Image_Wide_Wide_Character
87     (V : Wide_Wide_Character;
88      S : in out String;
89      P : out Natural)
90   is
91      pragma Assert (S'First = 1);
92
93      Val : Unsigned_32 := Wide_Wide_Character'Pos (V);
94
95   begin
96      --  If in range of standard Character, use Character routine. Use the
97      --  Ada 2005 version, since either we are called directly in Ada 2005
98      --  mode for Wide_Wide_Character, or this is the Wide_Character case
99      --  which already took care of the Soft_Hyphen glitch.
100
101      if Val <= 16#FF# then
102         Image_Character_05
103           (Character'Val (Wide_Wide_Character'Pos (V)), S, P);
104
105      --  Otherwise value returned is Hex_hhhhhhhh
106
107      else
108         declare
109            Hex : constant array (Unsigned_32 range 0 .. 15) of Character :=
110                    "0123456789ABCDEF";
111
112         begin
113            S (1 .. 4) := "Hex_";
114
115            for J in reverse 5 .. 12 loop
116               S (J) := Hex (Val mod 16);
117               Val := Val / 16;
118            end loop;
119
120            P := 12;
121         end;
122      end if;
123   end Image_Wide_Wide_Character;
124
125end System.Img_WChar;
126