------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . W I D _ W C H A R -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2019, 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 -- -- . -- -- -- -- 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;