1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                      S Y S T E M . W W D _ C H A R                       --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2009, 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
32package body System.WWd_Char is
33
34   --------------------------
35   -- Wide_Width_Character --
36   --------------------------
37
38   function Wide_Width_Character (Lo, Hi : Character) return Natural is
39      W : Natural;
40
41   begin
42      W := 0;
43      for C in Lo .. Hi loop
44         declare
45            S : constant Wide_String := Character'Wide_Image (C);
46         begin
47            W := Natural'Max (W, S'Length);
48         end;
49      end loop;
50
51      return W;
52   end Wide_Width_Character;
53
54   -------------------------------
55   -- Wide_Wide_Width_Character --
56   -------------------------------
57
58   function Wide_Wide_Width_Character (Lo, Hi : Character) return Natural is
59      W : Natural;
60
61   begin
62      W := 0;
63      for C in Lo .. Hi loop
64         declare
65            S : constant String := Character'Image (C);
66         begin
67            W := Natural'Max (W, S'Length);
68         end;
69      end loop;
70
71      return W;
72   end Wide_Wide_Width_Character;
73
74end System.WWd_Char;
75