File : 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) 1992-2010, 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 -- --
19 -- --
20 -- --
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
32 with Interfaces; use Interfaces;
33
34 with System.Img_Char; use System.Img_Char;
35
36 package 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
125 end System.Img_WChar;