https://github.com/ccy/delphi-zip

Delphi System.zip patch with ZIP64 and LZMA supports
https://github.com/ccy/delphi-zip

component delphi zip

Last synced: 5 months ago
JSON representation

Delphi System.zip patch with ZIP64 and LZMA supports

• Host: GitHub
• URL: https://github.com/ccy/delphi-zip
• Owner: ccy
• Created: 2014-07-10T10:30:42.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2025-09-19T02:40:19.000Z (9 months ago)
• Last Synced: 2025-09-19T04:25:10.752Z (9 months ago)
• Topics: component, delphi, zip
• Language: Pascal
• Size: 1000 KB
• Stars: 92
• Watchers: 12
• Forks: 30
• Open Issues: 2
• Metadata Files:
  • Readme: readme.adoc

Awesome Lists containing this project

README

          
= 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.

----