EonilFSEvents

Eonil 2018 Maintenance. 2019 Maintenance.

It's possible to use FSEvents directly in Swift, but it still involves many boilerplate works and subtle conversions.

This library provides mostly-faithful wrapper around FSEvents feature tailored for Swift 5.

Quickstart

Import.

import EonilFSEvents

Start.

try EonilFSEvents.startWatching( 
    paths: ["/"],
    for: ObjectIdentifier(self),
    with: { event in print(event) })

Stop.

EonilFSEvents.stopWatching(for: ObjectIdentifier(self))

Using Full Features

Make a EonilFSEventStream, schedule it to a GCD queue, and start.

let s = try EonilFSEventStream(pathsToWatch: paths,
    sinceWhen: .now,
    latency: 0,
    flags: [],
    handler: handler)
s.setDispatchQueue(DispatchQueue.main)
try s.start()

After use, deinitialize by stop, invalidate(unschedule).

s.stop()
s.invalidate()

As soon as the last strong reference gets removed, the stream will be destroyed.

Caveats

In the Xcode, AppKit apps are configured to use Sandbox by default. Sandboxed apps cannot access files out of its container. Therefore, it could look like it cannot receive file system events out of the container. To receive file system events out of container, you should turn off sandboxing.

At this point, xcodebuild fails on dependency resolution for packages. I don't know why. It seems Xcode have some issues with it. To work around, just set SYMROOT explicitly. See test.zsh how to set it.

Credits & License

Copyright(c) 2018 Hoon H., Eonil. All rights reserved. Use of this library is granted under "MIT License".