NodeKit ZipReader (NKZipReader)

A pure Swift Zip File Reader that is fast and low energy on iOS and macOS plaforms.

• Uses the latest libcompression library from Apple
• No dependency on minizip or libz
• No bloat for encryption or files larger than 4Gb
• Deflate or no decompression only
• Uses random access file seeking to minimize data that is read into memory
• Intended for servers that read directory of zip files once, cache all the directory information, and then get accessed on a file by file basis, without having to unzip the whole archive to temporary folders
• Uses least recently used cache (NSCache) for both directory (until low memory), and for full Zip Contents (last 2 zip files read)

Usage

var unzipper = NKZipReader.create()
    
var data = unzipper.dataForFile( "//Volumes/data/test.zip", filename: "test/package.json")

Installation

Install nodekit-io/nodekit-zipreader using your favorite framework package manager OR just copy the 6 NKZ* Swift files to your project

Make sure that libcompression is listed under XCode -> Targets -> Build Phases -> Link Binary with Libraries (no need to download its on every modern Apple developer machine but has to be explicitly added for the linker)

Requirements

iOS 9 or later, OS X 10.10 or later, or macOS

License

Apache 2 (see LICENSE) Copyright (c) 2016 OffGrid Networks. All Rights Reserved.