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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- G N A T . C R C 3 2 --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001-2002 Ada Core Technologies, 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. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Unchecked_Conversion;
package body GNAT.CRC32 is
------------
-- Update --
------------
procedure Update (C : in out CRC32; Value : String) is
begin
for K in Value'Range loop
Update (C, Value (K));
end loop;
end Update;
procedure Update (C : in out CRC32; Value : Ada.Streams.Stream_Element) is
function To_Char is new Unchecked_Conversion
(Ada.Streams.Stream_Element, Character);
V : constant Character := To_Char (Value);
begin
Update (C, V);
end Update;
procedure Update
(C : in out CRC32;
Value : Ada.Streams.Stream_Element_Array)
is
begin
for K in Value'Range loop
Update (C, Value (K));
end loop;
end Update;
-----------------
-- Wide_Update --
-----------------
procedure Wide_Update (C : in out CRC32; Value : Wide_Character) is
subtype S2 is String (1 .. 2);
function To_S2 is new Unchecked_Conversion (Wide_Character, S2);
VS : constant S2 := To_S2 (Value);
begin
Update (C, VS (1));
Update (C, VS (2));
end Wide_Update;
procedure Wide_Update (C : in out CRC32; Value : Wide_String) is
begin
for K in Value'Range loop
Wide_Update (C, Value (K));
end loop;
end Wide_Update;
end GNAT.CRC32;
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