101 lines
3.3 KiB
Swift
101 lines
3.3 KiB
Swift
// Copyright 2018-Present Shin Yamamoto. All rights reserved. MIT license.
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import Foundation
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import os.log
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// Must be a variable to use `hook` property in testing
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var log = {
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return Logger()
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}()
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struct Logger {
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private let osLog: OSLog
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private let s = DispatchSemaphore(value: 1)
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enum Level: Int, Comparable {
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case debug = 0
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case info = 1
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case warning = 2
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case error = 3
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var displayName: String {
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switch self {
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case .debug:
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return "Debug:"
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case .info:
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return "Info:"
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case .warning:
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return "Warning:"
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case .error:
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return "Error:"
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}
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}
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@available(iOS 10.0, *)
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var osLogType: OSLogType {
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switch self {
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case .debug: return .debug
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case .info: return .info
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case .warning: return .default
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case .error: return .error
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}
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}
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static func < (lhs: Logger.Level, rhs: Logger.Level) -> Bool {
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return lhs.rawValue < rhs.rawValue
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}
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}
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typealias Hook = ((String, Level) -> Void)
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var hook: Hook?
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fileprivate init() {
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osLog = OSLog(subsystem: "com.scenee.FloatingPanel", category: "FloatingPanel")
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}
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private func log(_ level: Level, _ message: Any, _ arguments: [Any], tag: String, function: String, line: UInt) {
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_ = s.wait(timeout: .now() + 0.033)
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defer { s.signal() }
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let extraMessage: String = arguments.map({ String(describing: $0) }).joined(separator: " ")
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let _tag = tag.isEmpty ? "" : "\(tag):"
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let log: String = {
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switch level {
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case .debug:
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return "\(level.displayName)\(_tag) \(message) \(extraMessage) (\(function):\(line))"
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default:
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return "\(level.displayName)\(_tag) \(message) \(extraMessage)"
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}
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}()
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hook?(log, level)
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os_log("%{public}@", log: osLog, type: level.osLogType, log)
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}
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private func getPrettyFunction(_ function: String, _ file: String) -> String {
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if let filename = file.split(separator: "/").last {
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return filename + ":" + function
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} else {
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return file + ":" + function
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}
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}
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func debug(_ log: Any, _ arguments: Any..., tag: String = "", function: String = #function, file: String = #file, line: UInt = #line) {
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#if __FP_LOG
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self.log(.debug, log, arguments, tag: tag, function: getPrettyFunction(function, file), line: line)
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#endif
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}
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func info(_ log: Any, _ arguments: Any..., tag: String = "", function: String = #function, file: String = #file, line: UInt = #line) {
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self.log(.info, log, arguments, tag: tag, function: getPrettyFunction(function, file), line: line)
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}
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func warning(_ log: Any, _ arguments: Any..., function: String = #function, file: String = #file, line: UInt = #line) {
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self.log(.warning, log, arguments, tag: "", function: getPrettyFunction(function, file), line: line)
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}
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func error(_ log: Any, _ arguments: Any..., function: String = #function, file: String = #file, line: UInt = #line) {
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self.log(.error, log, arguments, tag: "", function: getPrettyFunction(function, file), line: line)
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}
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}
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