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Diffstat (limited to 'gcc/ada/s-imgwch.adb')
| -rw-r--r-- | gcc/ada/s-imgwch.adb | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/gcc/ada/s-imgwch.adb b/gcc/ada/s-imgwch.adb new file mode 100644 index 00000000000..487889b5d07 --- /dev/null +++ b/gcc/ada/s-imgwch.adb @@ -0,0 +1,87 @@ +----------------------------------------------------------------------------- +-- -- +-- 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; |
