| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- A D A . C H A R A C T E R S . H A N D L I N G -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2005, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- 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 Ada.Characters.Conversions is |
| |
| ------------------ |
| -- Is_Character -- |
| ------------------ |
| |
| function Is_Character (Item : Wide_Character) return Boolean is |
| begin |
| return Wide_Character'Pos (Item) < 256; |
| end Is_Character; |
| |
| function Is_Character (Item : Wide_Wide_Character) return Boolean is |
| begin |
| return Wide_Wide_Character'Pos (Item) < 256; |
| end Is_Character; |
| |
| --------------- |
| -- Is_String -- |
| --------------- |
| |
| function Is_String (Item : Wide_String) return Boolean is |
| begin |
| for J in Item'Range loop |
| if Wide_Character'Pos (Item (J)) >= 256 then |
| return False; |
| end if; |
| end loop; |
| |
| return True; |
| end Is_String; |
| |
| function Is_String (Item : Wide_Wide_String) return Boolean is |
| begin |
| for J in Item'Range loop |
| if Wide_Wide_Character'Pos (Item (J)) >= 256 then |
| return False; |
| end if; |
| end loop; |
| |
| return True; |
| end Is_String; |
| |
| ----------------------- |
| -- Is_Wide_Character -- |
| ----------------------- |
| |
| function Is_Wide_Character (Item : Wide_Wide_Character) return Boolean is |
| begin |
| return Wide_Wide_Character'Pos (Item) < 2**16; |
| end Is_Wide_Character; |
| |
| -------------------- |
| -- Is_Wide_String -- |
| -------------------- |
| |
| function Is_Wide_String (Item : Wide_Wide_String) return Boolean is |
| begin |
| for J in Item'Range loop |
| if Wide_Wide_Character'Pos (Item (J)) >= 2**16 then |
| return False; |
| end if; |
| end loop; |
| |
| return True; |
| end Is_Wide_String; |
| |
| ------------------ |
| -- To_Character -- |
| ------------------ |
| |
| function To_Character |
| (Item : Wide_Character; |
| Substitute : Character := ' ') return Character |
| is |
| begin |
| if Is_Character (Item) then |
| return Character'Val (Wide_Character'Pos (Item)); |
| else |
| return Substitute; |
| end if; |
| end To_Character; |
| |
| function To_Character |
| (Item : Wide_Wide_Character; |
| Substitute : Character := ' ') return Character |
| is |
| begin |
| if Is_Character (Item) then |
| return Character'Val (Wide_Wide_Character'Pos (Item)); |
| else |
| return Substitute; |
| end if; |
| end To_Character; |
| |
| --------------- |
| -- To_String -- |
| --------------- |
| |
| function To_String |
| (Item : Wide_String; |
| Substitute : Character := ' ') return String |
| is |
| Result : String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := To_Character (Item (J), Substitute); |
| end loop; |
| |
| return Result; |
| end To_String; |
| |
| function To_String |
| (Item : Wide_Wide_String; |
| Substitute : Character := ' ') return String |
| is |
| Result : String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := To_Character (Item (J), Substitute); |
| end loop; |
| |
| return Result; |
| end To_String; |
| |
| ----------------------- |
| -- To_Wide_Character -- |
| ----------------------- |
| |
| function To_Wide_Character |
| (Item : Character) return Wide_Character |
| is |
| begin |
| return Wide_Character'Val (Character'Pos (Item)); |
| end To_Wide_Character; |
| |
| function To_Wide_Character |
| (Item : Wide_Wide_Character; |
| Substitute : Wide_Character := ' ') return Wide_Character |
| is |
| begin |
| if Wide_Wide_Character'Pos (Item) < 2**16 then |
| return Wide_Character'Val (Wide_Wide_Character'Pos (Item)); |
| else |
| return Substitute; |
| end if; |
| end To_Wide_Character; |
| |
| -------------------- |
| -- To_Wide_String -- |
| -------------------- |
| |
| function To_Wide_String |
| (Item : String) return Wide_String |
| is |
| Result : Wide_String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := To_Wide_Character (Item (J)); |
| end loop; |
| |
| return Result; |
| end To_Wide_String; |
| |
| function To_Wide_String |
| (Item : Wide_Wide_String; |
| Substitute : Wide_Character := ' ') return Wide_String |
| is |
| Result : Wide_String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := |
| To_Wide_Character (Item (J), Substitute); |
| end loop; |
| |
| return Result; |
| end To_Wide_String; |
| |
| ---------------------------- |
| -- To_Wide_Wide_Character -- |
| ---------------------------- |
| |
| function To_Wide_Wide_Character |
| (Item : Character) return Wide_Wide_Character |
| is |
| begin |
| return Wide_Wide_Character'Val (Character'Pos (Item)); |
| end To_Wide_Wide_Character; |
| |
| function To_Wide_Wide_Character |
| (Item : Wide_Character) return Wide_Wide_Character |
| is |
| begin |
| return Wide_Wide_Character'Val (Wide_Character'Pos (Item)); |
| end To_Wide_Wide_Character; |
| |
| ------------------------- |
| -- To_Wide_Wide_String -- |
| ------------------------- |
| |
| function To_Wide_Wide_String |
| (Item : String) return Wide_Wide_String |
| is |
| Result : Wide_Wide_String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := To_Wide_Wide_Character (Item (J)); |
| end loop; |
| |
| return Result; |
| end To_Wide_Wide_String; |
| |
| function To_Wide_Wide_String |
| (Item : Wide_String) return Wide_Wide_String |
| is |
| Result : Wide_Wide_String (1 .. Item'Length); |
| |
| begin |
| for J in Item'Range loop |
| Result (J - (Item'First - 1)) := To_Wide_Wide_Character (Item (J)); |
| end loop; |
| |
| return Result; |
| end To_Wide_Wide_String; |
| |
| end Ada.Characters.Conversions; |