| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . W W D _ W C H A R -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Interfaces; use Interfaces; |
| |
| with System.WWd_Char; |
| |
| package body System.Wwd_WChar is |
| |
| ------------------------------------ |
| -- Wide_Wide_Width_Wide_Character -- |
| ------------------------------------ |
| |
| -- This is the case where we are talking about the Wide_Wide_Image of |
| -- a Wide_Character, which is always the same character sequence as the |
| -- Wide_Image of the same Wide_Character. |
| |
| function Wide_Wide_Width_Wide_Character |
| (Lo, Hi : Wide_Character) return Natural |
| is |
| begin |
| return Wide_Width_Wide_Character (Lo, Hi); |
| end Wide_Wide_Width_Wide_Character; |
| |
| ------------------------------------ |
| -- Wide_Wide_Width_Wide_Wide_Char -- |
| ------------------------------------ |
| |
| function Wide_Wide_Width_Wide_Wide_Char |
| (Lo, Hi : Wide_Wide_Character) return Natural |
| is |
| LV : constant Unsigned_32 := Wide_Wide_Character'Pos (Lo); |
| HV : constant Unsigned_32 := Wide_Wide_Character'Pos (Hi); |
| |
| begin |
| -- Return zero if empty range |
| |
| if LV > HV then |
| return 0; |
| |
| -- Return max value (12) for wide character (Hex_hhhhhhhh) |
| |
| elsif HV > 255 then |
| return 12; |
| |
| -- If any characters in normal character range, then use normal |
| -- Wide_Wide_Width attribute on this range to find out a starting point. |
| -- Otherwise start with zero. |
| |
| else |
| return |
| System.WWd_Char.Wide_Wide_Width_Character |
| (Lo => Character'Val (LV), |
| Hi => Character'Val (Unsigned_32'Min (255, HV))); |
| end if; |
| end Wide_Wide_Width_Wide_Wide_Char; |
| |
| ------------------------------- |
| -- Wide_Width_Wide_Character -- |
| ------------------------------- |
| |
| function Wide_Width_Wide_Character |
| (Lo, Hi : Wide_Character) return Natural |
| is |
| LV : constant Unsigned_32 := Wide_Character'Pos (Lo); |
| HV : constant Unsigned_32 := Wide_Character'Pos (Hi); |
| |
| begin |
| -- Return zero if empty range |
| |
| if LV > HV then |
| return 0; |
| |
| -- Return max value (12) for wide character (Hex_hhhhhhhh) |
| |
| elsif HV > 255 then |
| return 12; |
| |
| -- If any characters in normal character range, then use normal |
| -- Wide_Wide_Width attribute on this range to find out a starting point. |
| -- Otherwise start with zero. |
| |
| else |
| return |
| System.WWd_Char.Wide_Width_Character |
| (Lo => Character'Val (LV), |
| Hi => Character'Val (Unsigned_32'Min (255, HV))); |
| end if; |
| end Wide_Width_Wide_Character; |
| |
| ------------------------------------ |
| -- Wide_Width_Wide_Wide_Character -- |
| ------------------------------------ |
| |
| function Wide_Width_Wide_Wide_Character |
| (Lo, Hi : Wide_Wide_Character) return Natural |
| is |
| begin |
| return Wide_Wide_Width_Wide_Wide_Char (Lo, Hi); |
| end Wide_Width_Wide_Wide_Character; |
| |
| end System.Wwd_WChar; |
