upgrade to vim 8.1.2110

iVim/FilesystemItemWatcher.swift

@@ -0,0 +1,95 @@
+//
+//  FilesystemItemWatcher.swift
+//  iVim
+//
+//  Created by Terry Chou on 10/14/19.
+//  Copyright © 2019 Boogaloo. All rights reserved.
+//
+
+import Foundation
+
+
+protocol FilesystemItemWatcherDelegate: class {
+    func itemDidChange()
+    func itemDidRename(to newURL: URL)
+    func subitemDidChange(at url: URL)
+    func subitemWasDeleted(at url: URL)
+}
+
+final class FilesystemItemWatcher: NSObject {
+    private static let operationQ = OperationQueue()
+    private var itemURL: URL
+    private var isWatching = false
+    weak var delegate: FilesystemItemWatcherDelegate?
+    init(url: URL, delegate: FilesystemItemWatcherDelegate? = nil) {
+        self.itemURL = url
+        self.delegate = delegate
+        super.init()
+    }
+
+    deinit {
+        self.stop()
+    }
+}
+
+extension FilesystemItemWatcher: NSFilePresenter {
+    var presentedItemURL: URL? {
+        return self.itemURL
+    }
+
+    var presentedItemOperationQueue: OperationQueue {
+        return FilesystemItemWatcher.operationQ
+    }
+
+    func presentedItemDidChange() {
+//        print("\(#function)")
+        self.delegate?.itemDidChange()
+    }
+
+    func presentedItemDidMove(to newURL: URL) {
+//        print("\(#function)")
+        self.delegate?.itemDidRename(to: newURL)
+    }
+
+//    func presentedSubitemDidAppear(at url: URL) {
+//        print("\(#function)")
+//        print("at: \(url)")
+//    }
+
+    func presentedSubitemDidChange(at url: URL) {
+//        print("\(#function)")
+        if FileManager.default.fileExists(atPath: url.path) {
+            self.delegate?.subitemDidChange(at: url)
+        } else {
+            self.delegate?.subitemWasDeleted(at: url)
+        }
+    }
+
+//    func presentedSubitem(at oldURL: URL, didMoveTo newURL: URL) {
+//        print("\(#function)")
+//        print("from: \(oldURL) to: \(newURL)")
+//    }
+//
+//    func accommodatePresentedItemDeletion(completionHandler: @escaping (Error?) -> Void) {
+//        print("\(#function)")
+//    }
+//
+//    func accommodatePresentedSubitemDeletion(at url: URL, completionHandler: @escaping (Error?) -> Void) {
+//        print("\(#function)")
+//        print("at: \(url)")
+//    }
+
+    func start() {
+        if !self.isWatching {
+            NSFileCoordinator.addFilePresenter(self)
+            self.isWatching = true
+        }
+    }
+
+    func stop() {
+        if self.isWatching {
+            NSFileCoordinator.removeFilePresenter(self)
+            self.isWatching = false
+        }
+    }
+}