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-- Copyright (c) 2016-2017, Natacha Porté --
-- --
-- Permission to use, copy, modify, and distribute this software for any --
-- purpose with or without fee is hereby granted, provided that the above --
-- copyright notice and this permission notice appear in all copies. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. --
------------------------------------------------------------------------------
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-- Natools.Smaz_Implementations.Base_4096 provides the subprograms needed --
-- to instantiate Natools.Smaz_Generic into a variant of the Smaz --
-- compression algorithm that output directly base-64 printable symbols, --
-- but with a dictionary indexed by two symbols, allowing a maximum size of --
-- 4095 entries. --
------------------------------------------------------------------------------
with Ada.Streams;
package Natools.Smaz_Implementations.Base_4096 is
pragma Pure;
type Base_4096_Digit is range 0 .. 4095;
procedure Read_Code
(Input : in Ada.Streams.Stream_Element_Array;
Offset : in out Ada.Streams.Stream_Element_Offset;
Code : out Base_4096_Digit;
Verbatim_Length : out Natural;
Last_Code : in Base_4096_Digit;
Variable_Length_Verbatim : in Boolean);
procedure Read_Verbatim
(Input : in Ada.Streams.Stream_Element_Array;
Offset : in out Ada.Streams.Stream_Element_Offset;
Output : out String);
procedure Skip_Verbatim
(Input : in Ada.Streams.Stream_Element_Array;
Offset : in out Ada.Streams.Stream_Element_Offset;
Verbatim_Length : in Positive);
function Verbatim_Size
(Input_Length : in Positive;
Last_Code : in Base_4096_Digit;
Variable_Length_Verbatim : in Boolean)
return Ada.Streams.Stream_Element_Count;
procedure Write_Code
(Output : in out Ada.Streams.Stream_Element_Array;
Offset : in out Ada.Streams.Stream_Element_Offset;
Code : in Base_4096_Digit);
procedure Write_Verbatim
(Output : in out Ada.Streams.Stream_Element_Array;
Offset : in out Ada.Streams.Stream_Element_Offset;
Input : in String;
Last_Code : in Base_4096_Digit;
Variable_Length_Verbatim : in Boolean);
end Natools.Smaz_Implementations.Base_4096;