58 lines
2.0 KiB
Swift
58 lines
2.0 KiB
Swift
// SPDX-License-Identifier: MIT
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// Copyright © 2018-2021 WireGuard LLC. All Rights Reserved.
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import Foundation
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public class LogViewHelper {
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var log: OpaquePointer
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var cursor: UInt32 = UINT32_MAX
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static let formatOptions: ISO8601DateFormatter.Options = [
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.withYear, .withMonth, .withDay, .withTime,
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.withDashSeparatorInDate, .withColonSeparatorInTime, .withSpaceBetweenDateAndTime,
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.withFractionalSeconds
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]
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struct LogEntry {
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let timestamp: String
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let message: String
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func text() -> String {
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return timestamp + " " + message
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}
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}
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class LogEntries {
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var entries: [LogEntry] = []
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}
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init?(logFilePath: String?) {
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guard let logFilePath = logFilePath else { return nil }
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guard let log = open_log(logFilePath) else { return nil }
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self.log = log
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}
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deinit {
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close_log(self.log)
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}
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func fetchLogEntriesSinceLastFetch(completion: @escaping ([LogViewHelper.LogEntry]) -> Void) {
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var logEntries = LogEntries()
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DispatchQueue.global(qos: .userInitiated).async { [weak self] in
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guard let self = self else { return }
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let newCursor = view_lines_from_cursor(self.log, self.cursor, &logEntries) { cStr, timestamp, ctx in
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let message = cStr != nil ? String(cString: cStr!) : ""
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let date = Date(timeIntervalSince1970: Double(timestamp) / 1000000000)
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let dateString = ISO8601DateFormatter.string(from: date, timeZone: TimeZone.current, formatOptions: LogViewHelper.formatOptions)
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if let logEntries = ctx?.bindMemory(to: LogEntries.self, capacity: 1) {
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logEntries.pointee.entries.append(LogEntry(timestamp: dateString, message: message))
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}
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}
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DispatchQueue.main.async { [weak self] in
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guard let self = self else { return }
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self.cursor = newCursor
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completion(logEntries.entries)
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}
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}
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}
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}
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