LLZipLib 1.1.0

dotnet add package LLZipLib --version 1.1.0
NuGet\Install-Package LLZipLib -Version 1.1.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="LLZipLib" Version="1.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add LLZipLib --version 1.1.0
#r "nuget: LLZipLib, 1.1.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install LLZipLib as a Cake Addin
#addin nuget:?package=LLZipLib&version=1.1.0

// Install LLZipLib as a Cake Tool
#tool nuget:?package=LLZipLib&version=1.1.0

LLZipLib

Build status NuGet

Low-level Zip Library, allowing advanced tweaks (injecting/removing extra blocks, altering flags, crafting special archives). Self contained, no third party dependencies. If you just want to unzip files, this is not for you 😃

.ZIP File Format Specification: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT

How to use it:

Changing file content

var zip = ZipArchive.Read(filename);

var entry = zip.Entries.FirstOrDefault(e => e.LocalFileHeader.Filename == "readme.txt");
if (entry != null)
{
	entry.Data = zip.StringConverter.GetBytes("This is my new content", StringConverterContext.Content);
	// this is not compressed
	entry.LocalFileHeader.Compression = entry.CentralDirectoryHeader.Compression = 0;
}

zip.Write(filename);

Processing file names

var zip = ZipArchive.Read(filename);

foreach (var entry in zip.Entries)
{
	entry.LocalFileHeader.Filename = "foo." + entry.LocalFileHeader.Filename;
	entry.CentralDirectoryHeader.Filename = entry.LocalFileHeader.Filename;
}

zip.Write(filename);

Creating archive / adding entry

var zip = new ZipArchive();
var entry = new ZipEntry();

zip.Entries.Add(entry);
entry.LocalFileHeader.Filename = entry.CentralDirectoryHeader.Filename = "foo.txt";
entry.Data = zip.StringConverter.GetBytes("Hello world!", StringConverterContext.Content);

zip.Write("foo.zip");

Removing all data descriptors

var zip = ZipArchive.Read(filename);

foreach (var entry in zip.Entries.Where(entry => entry.HasDataDescriptor))
{
	entry.LocalFileHeader.CompressedSize = entry.DataDescriptor.CompressedSize;
	entry.LocalFileHeader.UncompressedSize = entry.DataDescriptor.UncompressedSize;
	entry.LocalFileHeader.Crc = entry.DataDescriptor.Crc;
	entry.HasDataDescriptor = false; 
}

zip.Write(filename);

Removing all extra blocks

var zip = ZipArchive.Read(filename);

foreach (var entry in zip.Entries)
{
	entry.LocalFileHeader.Extra = new byte[0];
	entry.CentralDirectoryHeader.Extra = new byte[0];
}

zip.Write(filename);
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.1.0 197 11/23/2023
1.0.0 474 12/17/2019