delphi-zip

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= Delphi Zip :toc:

= Introduction

https://docwiki.embarcadero.com/Libraries/Alexandria/en/System.Zip.TZipFile[TZipFile] class in RAD Studio does not support

• https://www.7-zip.org/sdk.html[LZMA] compression method
• Zip64 archive format

This library add these features to existing System.Zip.pas via new unit System.Zip2.pas. User can easily switch between System.Zip.pas and System.Zip2.pas in source code.

= Source code

The repository organizes source code for various RAD Studio release using https://github.com/ccy/delphi-zip/branches[branches] since https://github.com/ccy/delphi-zip/tree/XE4[RAD Studio XE4].

== RAD Studio 11 Alexandria

• https://blogs.embarcadero.com/announcing-the-availability-of-rad-studio-11-alexandria/[RAD Studio 11 Alexandria] support Zip64. Zip64 artifacts has replaced by RAD Studio 11 release.

= Usage

To enable Zip64 support, replace System.Zip.pas to System.Zip2.pas.

To enable LZMA compression method, Add System.Zip.LZMA to RAD Studio project.

= Example

To extract LZMA zip archive:

[source,pascal]

uses System.Zip2, System.Zip.LZMA;

begin TZipFile.ExtractZipFile('c:\lzma.zip', 'c:'); end.