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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,5 @@ | ||
| // | ||
| // DowloadiCloudFiles.m | ||
| // DownloadiCloudFiles.m | ||
| // Logseq | ||
| // | ||
| // Created by leizhe on 2021/12/29. | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // | ||
| // FsWatcher.m | ||
| // Logseq | ||
| // | ||
| // Created by Mono Wang on 2/17/R4. | ||
| // | ||
|
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| #import <Capacitor/Capacitor.h> | ||
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| CAP_PLUGIN(FsWatcher, "FsWatcher", | ||
| CAP_PLUGIN_METHOD(watch, CAPPluginReturnPromise); | ||
| CAP_PLUGIN_METHOD(unwatch, CAPPluginReturnPromise); | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| // | ||
| // FsWatcher.swift | ||
| // Logseq | ||
| // | ||
| // Created by Mono Wang on 2/17/R4. | ||
| // | ||
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| import Foundation | ||
| import Capacitor | ||
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| // MARK: Watcher Plugin | ||
|
|
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| @objc(FsWatcher) | ||
| public class FsWatcher: CAPPlugin, PollingWatcherDelegate { | ||
| private var watcher: PollingWatcher? = nil | ||
| private var baseUrl: URL? = nil | ||
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| override public func load() { | ||
| print("debug FsWatcher iOS plugin loaded!") | ||
| } | ||
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| @objc func watch(_ call: CAPPluginCall) { | ||
| if let path = call.getString("path") { | ||
| guard let url = URL(string: path) else { | ||
| call.reject("can not parse url") | ||
| return | ||
| } | ||
| self.baseUrl = url | ||
| self.watcher = PollingWatcher(at: url) | ||
| self.watcher?.delegate = self | ||
|
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| call.resolve(["ok": true]) | ||
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| } else { | ||
| call.reject("missing path string parameter") | ||
| } | ||
| } | ||
|
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| @objc func unwatch(_ call: CAPPluginCall) { | ||
| watcher?.stop() | ||
| watcher = nil | ||
| baseUrl = nil | ||
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| call.resolve() | ||
| } | ||
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| public func recevedNotification(_ url: URL, _ event: PollingWatcherEvent, _ metadata: SimpleFileMetadata?) { | ||
| // NOTE: Event in js {dir path content stat{mtime}} | ||
| switch event { | ||
| case .Unlink: | ||
| self.notifyListeners("watcher", data: ["event": "unlink", | ||
| "dir": baseUrl?.description as Any, | ||
| "path": url.description, | ||
| ]) | ||
| case .Add: | ||
| let content = try? String(contentsOf: url, encoding: .utf8) | ||
| self.notifyListeners("watcher", data: ["event": "add", | ||
| "dir": baseUrl?.description as Any, | ||
| "path": url.description, | ||
| "content": content as Any, | ||
| "stat": ["mtime": metadata?.contentModificationTimestamp, | ||
| "ctime": metadata?.creationTimestamp] | ||
| ]) | ||
| case .Change: | ||
| let content = try? String(contentsOf: url, encoding: .utf8) | ||
| self.notifyListeners("watcher", data: ["event": "change", | ||
| "dir": baseUrl?.description as Any, | ||
| "path": url.description, | ||
| "content": content as Any, | ||
| "stat": ["mtime": metadata?.contentModificationTimestamp, | ||
| "ctime": metadata?.creationTimestamp]]) | ||
| case .Error: | ||
| // TODO: handle error? | ||
| break | ||
| } | ||
| } | ||
| } | ||
|
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| // MARK: URL extension | ||
|
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| extension URL { | ||
| func isSkipped() -> Bool { | ||
| // skip hidden file | ||
| if self.lastPathComponent.starts(with: ".") { | ||
| return true | ||
| } | ||
| let allowedPathExtensions: Set = ["md", "markdown", "org", "css", "edn", "excalidraw"] | ||
| if allowedPathExtensions.contains(self.pathExtension.lowercased()) { | ||
| return false | ||
| } | ||
| // skip for other file types | ||
| return true | ||
| } | ||
|
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| func isICloudPlaceholder() -> Bool { | ||
| if self.lastPathComponent.starts(with: ".") && self.pathExtension.lowercased() == "icloud" { | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
| } | ||
|
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| // MARK: PollingWatcher | ||
|
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| public protocol PollingWatcherDelegate { | ||
| func recevedNotification(_ url: URL, _ event: PollingWatcherEvent, _ metadata: SimpleFileMetadata?) | ||
| } | ||
|
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| public enum PollingWatcherEvent: String { | ||
| case Add | ||
| case Change | ||
| case Unlink | ||
| case Error | ||
| } | ||
|
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| public struct SimpleFileMetadata: CustomStringConvertible, Equatable { | ||
| var contentModificationTimestamp: Double | ||
| var creationTimestamp: Double | ||
| var fileSize: Int | ||
|
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| public init?(of fileURL: URL) { | ||
| do { | ||
| let fileAttributes = try fileURL.resourceValues(forKeys:[.isRegularFileKey, .fileSizeKey, .contentModificationDateKey, .creationDateKey]) | ||
| if fileAttributes.isRegularFile! { | ||
| contentModificationTimestamp = fileAttributes.contentModificationDate?.timeIntervalSince1970 ?? 0.0 | ||
| creationTimestamp = fileAttributes.creationDate?.timeIntervalSince1970 ?? 0.0 | ||
| fileSize = fileAttributes.fileSize ?? 0 | ||
| } else { | ||
| return nil | ||
| } | ||
| } catch { | ||
| return nil | ||
| } | ||
| } | ||
|
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| public var description: String { | ||
| return "Meta(size=\(self.fileSize), mtime=\(self.contentModificationTimestamp), ctime=\(self.creationTimestamp)" | ||
| } | ||
| } | ||
|
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| public class PollingWatcher { | ||
| private let url: URL | ||
| private var timer: DispatchSourceTimer? | ||
| public var delegate: PollingWatcherDelegate? = nil | ||
| private var metaDb: [URL: SimpleFileMetadata] = [:] | ||
|
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| public init?(at: URL) { | ||
| url = at | ||
|
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| let queue = DispatchQueue(label: Bundle.main.bundleIdentifier! + ".timer") | ||
| timer = DispatchSource.makeTimerSource(queue: queue) | ||
| timer!.setEventHandler(qos: .background, flags: []) { [weak self] in | ||
| self?.tick() | ||
| } | ||
| timer!.schedule(deadline: .now()) | ||
| timer!.resume() | ||
|
|
||
| } | ||
|
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| deinit { | ||
| self.stop() | ||
| } | ||
|
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| public func stop() { | ||
| timer?.cancel() | ||
| timer = nil | ||
| } | ||
|
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| private func tick() { | ||
| let startTime = DispatchTime.now() | ||
|
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| if let enumerator = FileManager.default.enumerator( | ||
| at: url, | ||
| includingPropertiesForKeys: [.isRegularFileKey], | ||
| // NOTE: icloud downloading requires non-skipsHiddenFiles | ||
| options: [.skipsPackageDescendants]) { | ||
|
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| var newMetaDb: [URL: SimpleFileMetadata] = [:] | ||
|
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| for case let fileURL as URL in enumerator { | ||
| if !fileURL.isSkipped() { | ||
| if let meta = SimpleFileMetadata(of: fileURL) { | ||
| newMetaDb[fileURL] = meta | ||
| } | ||
| } else if fileURL.isICloudPlaceholder() { | ||
| try? FileManager.default.startDownloadingUbiquitousItem(at: fileURL) | ||
| } | ||
| } | ||
|
|
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| self.updateMetaDb(with: newMetaDb) | ||
| } | ||
|
|
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| let elapsedNanoseconds = DispatchTime.now().uptimeNanoseconds - startTime.uptimeNanoseconds | ||
| let elapsedInMs = Double(elapsedNanoseconds) / 1_000_000 | ||
| print("debug ticker elapsed=\(elapsedInMs)ms") | ||
|
|
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| if #available(iOS 13.0, *) { | ||
| timer!.schedule(deadline: .now().advanced(by: .seconds(2)), leeway: .milliseconds(100)) | ||
| } else { | ||
| // Fallback on earlier versions | ||
| timer!.schedule(deadline: .now() + 2.0, leeway: .milliseconds(100)) | ||
| } | ||
| } | ||
|
|
||
| // TODO: batch? | ||
| private func updateMetaDb(with newMetaDb: [URL: SimpleFileMetadata]) { | ||
| for (url, meta) in newMetaDb { | ||
| if let idx = self.metaDb.index(forKey: url) { | ||
| let (_, oldMeta) = self.metaDb.remove(at: idx) | ||
| if oldMeta != meta { | ||
| self.delegate?.recevedNotification(url, .Change, meta) | ||
| } | ||
| } else { | ||
| self.delegate?.recevedNotification(url, .Add, meta) | ||
| } | ||
| } | ||
| for url in self.metaDb.keys { | ||
| self.delegate?.recevedNotification(url, .Unlink, nil) | ||
| } | ||
| self.metaDb = newMetaDb | ||
| } | ||
| } |
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