82 lines
2.1 KiB
Swift
82 lines
2.1 KiB
Swift
import Foundation
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import os.log
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extension Log {
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struct Record {
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let date: Date
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let level: Level
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let message: String
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init?(_ str: String) {
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let dateStr = String(str.prefix(19))
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guard let date = Log.dateFormatter.date(from: dateStr) else { return nil }
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let str = str.dropFirst(20)
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guard let endIndex = str.firstIndex(of: " ") else { return nil }
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let levelStr = String(str[str.startIndex..<endIndex])
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guard let level = Level(rawValue: levelStr) else { return nil }
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let messageStartIndex = str.index(after: endIndex)
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let message = String(str[messageStartIndex..<str.endIndex])
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self.init(date: date, level: level, message: message)
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}
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init(date: Date, level: Level, message: String) {
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self.date = date
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self.level = level
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self.message = message
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}
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func save(at url: URL) {
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guard let data = "\n\(description)".data(using: .utf8) else { return }
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if !FileManager.default.fileExists(atPath: url.path) {
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guard let _ = try? "".data(using: .utf8)?.write(to: url) else { return }
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}
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guard let fileHandle = try? FileHandle(forUpdating: url) else { return }
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defer { fileHandle.closeFile() }
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guard let _ = try? fileHandle.seekToEnd() else { return }
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try? fileHandle.write(contentsOf: data)
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}
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}
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}
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extension Log.Record: CustomStringConvertible {
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var description: String {
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"\(Log.dateFormatter.string(from: date)) \(level.rawValue) \(message)"
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}
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}
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extension Log.Record {
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enum Level: String {
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case debug
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case warning
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case error
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case critical
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case fatal
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case info
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case system // critical
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init(from osLogType: OSLogType) {
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switch osLogType {
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case OSLogType.default:
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self = .info
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case OSLogType.info:
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self = .info
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case OSLogType.debug:
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self = .debug
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case OSLogType.error:
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self = .error
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case OSLogType.fault:
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self = .fatal
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default:
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self = .info
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}
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}
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}
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}
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