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------------------------------------------------------------------------------
-- --
-- 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, 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. --
-- 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;
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