| ----------------------------------------------------------------------------- |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . I M G _ W C H A R -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.15 $ -- |
| -- -- |
| -- Copyright (C) 1992-1998, 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 2, 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. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.Img_Char; use System.Img_Char; |
| with System.WCh_Con; use System.WCh_Con; |
| with System.WCh_WtS; use System.WCh_WtS; |
| |
| package body System.Img_WChar is |
| |
| -------------------------- |
| -- Image_Wide_Character -- |
| -------------------------- |
| |
| function Image_Wide_Character |
| (V : Wide_Character; |
| EM : WC_Encoding_Method) |
| return String |
| is |
| Val : constant Natural := Wide_Character'Pos (V); |
| WS : Wide_String (1 .. 3); |
| |
| begin |
| -- If in range of standard character, use standard character routine |
| |
| if Val < 16#80# |
| or else (Val <= 16#FF# |
| and then EM not in WC_Upper_Half_Encoding_Method) |
| then |
| return Image_Character (Character'Val (Val)); |
| |
| -- if the value is one of the last two characters in the type, use |
| -- their language-defined names (3.5.2(3)). |
| |
| elsif Val = 16#FFFE# then |
| return "FFFE"; |
| |
| elsif Val = 16#FFFF# then |
| return "FFFF"; |
| |
| -- Otherwise return an appropriate escape sequence (i.e. one matching |
| -- the convention implemented by Scn.Wide_Char). The easiest thing is |
| -- to build a wide string for the result, and then use the Wide_Value |
| -- function to build the resulting String. |
| |
| else |
| WS (1) := '''; |
| WS (2) := V; |
| WS (3) := '''; |
| |
| return Wide_String_To_String (WS, EM); |
| end if; |
| |
| end Image_Wide_Character; |
| |
| end System.Img_WChar; |
