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Monitor changes to files and directories using kernel event notifications (kqueue) in Swift

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daniel-pedersen/SKQueue

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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 replacePackage.swift withthis file.

Installation

Swift Package Manager

To use SKQueue, add the code below to yourdependencies inPackage.swift.Then runswift package fetch to fetch SKQueue.

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

Usage

To monitor the filesystem withSKQueue, you first need aSKQueueDelegate instance that can accept notifications.Paths to watch can then be added withaddPath, as per the example below.

Example

import SKQueueclassSomeClass:SKQueueDelegate{func receivedNotification(_ notification:SKQueueNotification, path:String, queue:SKQueue){print("\(notification.toStrings().map{ $0.rawValue}) @\(path)")}}letdelegate=SomeClass()letqueue=SKQueue(delegate: delegate)!queue.addPath("/Users/steve/Documents")queue.addPath("/Users/steve/Documents/dog.jpg")
ActionSample 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

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Monitor changes to files and directories using kernel event notifications (kqueue) in Swift

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