------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . W I D _ W C H A R -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2005, 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, 51 Franklin Street, Fifth Floor, -- -- Boston, MA 02110-1301, 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ package body System.Wid_WChar is -------------------------- -- Width_Wide_Character -- -------------------------- function Width_Wide_Character (Lo, Hi : Wide_Character) return Natural is W : Natural; P : Natural; begin W := 0; for C in Lo .. Hi loop P := Wide_Character'Pos (C); -- Here if we find a character in wide character range -- Width is max value (12) for Hex_hhhhhhhh if P > 16#FF# then return 12; -- If we are in character range then use length of character image else declare S : constant String := Character'Image (Character'Val (P)); begin W := Natural'Max (W, S'Length); end; end if; end loop; return W; end Width_Wide_Character; ------------------------------- -- Width_Wide_Wide_Character -- ------------------------------- function Width_Wide_Wide_Character (Lo, Hi : Wide_Wide_Character) return Natural is W : Natural; P : Natural; begin W := 0; for C in Lo .. Hi loop P := Wide_Wide_Character'Pos (C); -- Here if we find a character in wide wide character range. -- Width is max value (12) for Hex_hhhhhhhh if P > 16#FF# then W := 12; -- If we are in character range then use length of character image else declare S : constant String := Character'Image (Character'Val (P)); begin W := Natural'Max (W, S'Length); end; end if; end loop; return W; end Width_Wide_Wide_Character; end System.Wid_WChar;