0001    // Log.swift
0002    //
0003    // The MIT License (MIT)
0004    //
0005    // Copyright (c) 2015 Zewo
0006    //
0007    // Permission is hereby granted, free of charge, to any person obtaining a copy
0008    // of this software and associated documentation files (the "Software"), to deal
0009    // in the Software without restriction, including without limitation the rights
0010    // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
0011    // copies of the Software, and to permit persons to whom the Software is
0012    // furnished to do so, subject to the following conditions:
0013    //
0014    // The above copyright notice and this permission notice shall be included in all
0015    // copies or substantial portions of the Software.
0016    //
0017    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0018    // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0019    // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
0020    // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0021    // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
0022    // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0023    // SOFTWARE.
0024    
0025    @_exported import File
0026    
0027    public final class Log {
0028        public struct Level
Log.swift:35
        public static let Trace   = Level(rawValue: 1 << 0)
Log.swift:36
        public static let Debug   = Level(rawValue: 1 << 1)
Log.swift:37
        public static let Info    = Level(rawValue: 1 << 2)
Log.swift:38
        public static let Warning = Level(rawValue: 1 << 3)
Log.swift:39
        public static let Error   = Level(rawValue: 1 << 4)
Log.swift:40
        public static let Fatal   = Level(rawValue: 1 << 5)
Log.swift:41
        public static let All     = Level(rawValue: ~0)
Log.swift:45
    public var levels: Level
Log.swift:49
    public init(stream: File = standardErrorStream, levels: Level = .All) {
Log.swift:58
    public func log(level: Level, item: Any, terminator: String = "\n", flush: Bool = true) {
: OptionSetType {
0029            public let rawValue
Log.swift:32
            self.rawValue = rawValue
: Int32
0030    
0031            public init
Log.swift:35
        public static let Trace   = Level(rawValue: 1 << 0)
Log.swift:36
        public static let Debug   = Level(rawValue: 1 << 1)
Log.swift:37
        public static let Info    = Level(rawValue: 1 << 2)
Log.swift:38
        public static let Warning = Level(rawValue: 1 << 3)
Log.swift:39
        public static let Error   = Level(rawValue: 1 << 4)
Log.swift:40
        public static let Fatal   = Level(rawValue: 1 << 5)
Log.swift:41
        public static let All     = Level(rawValue: ~0)
(rawValue: Int32) {
0032                self.rawValue = rawValue
0033            }
0034    
0035            public static let Trace
Log.swift:75
        log(.Trace, item: item, terminator: terminator, flush: flush)
   = Level(rawValue: 1 << 0)
0036            public static let Debug
Log.swift:79
        log(.Debug, item: item, terminator: terminator, flush: flush)
   = Level(rawValue: 1 << 1)
0037            public static let Info
Log.swift:83
        log(.Info, item: item, terminator: terminator, flush: flush)
    = Level(rawValue: 1 << 2)
0038            public static let Warning
Log.swift:87
        log(.Warning, item: item, terminator: terminator, flush: flush)
 = Level(rawValue: 1 << 3)
0039            public static let Error
Log.swift:91
        log(.Error, item: item, terminator: terminator, flush: flush)
   = Level(rawValue: 1 << 4)
0040            public static let Fatal
Log.swift:95
        log(.Fatal, item: item, terminator: terminator, flush: flush)
   = Level(rawValue: 1 << 5)
0041            public static let All     = Level(rawValue: ~0)
0042        }
0043    
0044        public var stream: File
0045        public var levels
Log.swift:59
        if levels.contains(level) {
: Level
0046        private let messageChannel = Channel<String>()
0047        private let once = Once()
0048    
0049        public init(stream: File = standardErrorStream, levels: Level = .All) {
0050            self.stream = stream
0051            self.levels = levels
0052        }
0053    
0054        deinit {
0055            messageChannel.close()
0056        }
0057    
0058        public func log
Log.swift:75
        log(.Trace, item: item, terminator: terminator, flush: flush)
Log.swift:79
        log(.Debug, item: item, terminator: terminator, flush: flush)
Log.swift:83
        log(.Info, item: item, terminator: terminator, flush: flush)
Log.swift:87
        log(.Warning, item: item, terminator: terminator, flush: flush)
Log.swift:91
        log(.Error, item: item, terminator: terminator, flush: flush)
Log.swift:95
        log(.Fatal, item: item, terminator: terminator, flush: flush)
(level: Level, item: Any, terminator: String = "\n", flush: Bool = true) {
0059            if levels.contains(level) {
0060                once.runInBackground {
0061                    for message in self.messageChannel {
0062                        do {
0063                            try self.stream.write(message)
0064                        } catch {
0065                            print("Log error: \(error)")
0066                            print("Log message: \(message)")
0067                        }
0068                    }
0069                }
0070                messageChannel.send(String(item) + terminator)
0071            }
0072        }
0073    
0074        public func trace(item: Any, terminator: String = "\n", flush: Bool = true) {
0075            log(.Trace, item: item, terminator: terminator, flush: flush)
0076        }
0077    
0078        public func debug(item: Any, terminator: String = "\n", flush: Bool = true) {
0079            log(.Debug, item: item, terminator: terminator, flush: flush)
0080        }
0081    
0082        public func info(item: Any, terminator: String = "\n", flush: Bool = true) {
0083            log(.Info, item: item, terminator: terminator, flush: flush)
0084        }
0085    
0086        public func warning(item: Any, terminator: String = "\n", flush: Bool = true) {
0087            log(.Warning, item: item, terminator: terminator, flush: flush)
0088        }
0089    
0090        public func error(item: Any, terminator: String = "\n", flush: Bool = true) {
0091            log(.Error, item: item, terminator: terminator, flush: flush)
0092        }
0093    
0094        public func fatal(item: Any, terminator: String = "\n", flush: Bool = true) {
0095            log(.Fatal, item: item, terminator: terminator, flush: flush)
0096        }
0097    }