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120 | -- SPDX-License-Identifier: MIT
--
-- Contributed by ITEC - NXP Semiconductors
-- June 2008
--
-- Copyright (c) 2008 - 2018 Gautier de Montmollin (maintainer)
-- SWITZERLAND
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.
private with Ada.Containers.Hashed_Maps;
private with Ada.Strings.Unbounded.Hash;
with DCF.Streams;
with DCF.Zip.Compress;
with DCF.Zip.Headers;
use DCF.Streams;
use DCF.Zip.Headers;
package DCF.Zip.Create is
pragma Preelaborate;
type Zip_Create_Info is private;
procedure Create
(Info : in out Zip_Create_Info;
Stream : not null Zipstream_Class_Access;
Compress : Zip.Compress.Compression_Method := Zip.Compress.Deflate_1)
with Pre => Stream.Get_Name /= "",
Post => Is_Created (Info);
function Is_Created (Info : Zip_Create_Info) return Boolean;
-- Set a new compression format for the next data to be added to the archive.
-- Can be useful if data are known to be already compressed - or not.
procedure Set (Info : in out Zip_Create_Info; New_Method : Zip.Compress.Compression_Method);
procedure Set_Comment (Info : in out Zip_Create_Info; Comment : String);
function Name (Info : Zip_Create_Info) return String;
procedure Add_Stream
(Info : in out Zip_Create_Info;
Stream : in out Root_Zipstream_Type'Class;
Feedback : in Feedback_Proc;
Compressed_Size : out Zip.File_Size_Type;
Final_Method : out Natural);
-- Add a new entry to a Zip archive, from a general input Zipstream
procedure Add_Stream (Info : in out Zip_Create_Info; Stream : in out Root_Zipstream_Type'Class);
procedure Add_Compressed_Stream
(Info : in out Zip_Create_Info; -- Destination
Stream : in out Root_Zipstream_Type'Class; -- Source
Feedback : in Feedback_Proc);
-- Add a new entry to a Zip archive, copied from another Zip archive.
-- This is useful for duplicating archives with some differences, like
-- adding, replacing, removing or recompressing entries. See the AZip
-- file manager for an application example.
-- The streams' indices are set at the beginning of local headers in
-- both archives.
procedure Finish (Info : in out Zip_Create_Info);
-- Complete the Zip archive; close the file if the stream is a file
Zip_Capacity_Exceeded : exception;
-- The following is raised on cases when the Zip archive creation exceeds
-- the Zip_32 format's capacity: 4GB total size, 65535 entries.
private
type P_String is access String;
type Dir_Entry is record
Head : Zip.Headers.Central_File_Header;
Name : P_String;
end record;
type Dir_Entries is array (Positive range <>) of Dir_Entry;
type Pdir_Entries is access Dir_Entries;
-- The use of Hashed_Maps makes Test_Zip_Create_Info_Timing run ~10x faster than
-- with the unbalanced binary tree of previous versions.
package SU renames Ada.Strings.Unbounded;
package Name_Mapping is new Ada.Containers.Hashed_Maps
(SU.Unbounded_String, Positive, SU.Hash, SU."=");
type Zip_Create_Info is record
Stream : Zipstream_Class_Access;
Compress : Zip.Compress.Compression_Method;
Contains : Pdir_Entries := null;
-- 'Contains' has unused room, to avoid reallocating each time:
Last_Entry : Natural := 0;
-- We set up a name dictionary just for avoiding duplicate entries
Dir : Name_Mapping.Map;
Zip_Archive_Format : Zip_Archive_Format_Type := Zip_32;
Comment : SU.Unbounded_String;
end record;
end DCF.Zip.Create;
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