SKQueue

SKQueue is a Swift libary used to monitor changes to the filesystem. It wraps the part of the kernel event notification interface of libc, kqueue. This means SKQueue has a very small footprint and is highly scalable, just like kqueue.

Requirements

• Swift tools version 4

To build in older environments just replace Package.swift with this file.

Installation

Swift Package Manager

To use SKQueue, add the code below to your dependencies in Package.swift. Then run swift package fetch to fetch SKQueue.

.package(url: "https://github.com/daniel-pedersen/SKQueue.git", from: "1.2.0"),

Usage

To monitor the filesystem with SKQueue, you first need a SKQueueDelegate instance that can accept notifications. Paths to watch can then be added with addPath, as per the example below.

Example

import SKQueue

class SomeClass: SKQueueDelegate {
  func receivedNotification(_ notification: SKQueueNotification, path: String, queue: SKQueue) {
    print("\(notification.toStrings().map { $0.rawValue }) @ \(path)")
  }
}

let delegate = SomeClass()
let queue = SKQueue(delegate: delegate)!

queue.addPath("/Users/steve/Documents")
queue.addPath("/Users/steve/Documents/dog.jpg")

Action	Sample output
Add or remove file in /Users/steve/Documents	["Write"] @ /Users/steve/Documents
Add or remove directory in /Users/steve/Documents	["Write", "SizeIncrease"] @ /Users/steve/Documents
Write to file /Users/steve/Documents/dog.jpg	["Rename", "SizeIncrease"] @ /Users/steve/Documents/dog.jpg

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request :D