swift 替代print 方法更具体的日志输出

直接贴代码了，可以支持多参数，在别人基础上进行修改

public func Fprint(_ items: Any...,
                    separator: String = " ",
                   terminator: String = "\n",
                   _ file:String = #file,
                   _ function:String = #function,
                   _ line:Int = #line){
  
    
    var longStr:String = ""
    for value in items{
        var stringRepresentation:String = ""
        if let value = value as? CustomStringConvertible{
            stringRepresentation = value.description
        }else if let value = value as? CustomDebugStringConvertible{
            stringRepresentation = value.debugDescription
        }else if let value = value as? LosslessStringConvertible{
            stringRepresentation = value.description
        } else{
            //            fatalError("glog only work for values that conform to CustomStringConvertible or CustomDebugStringConvertible")
            //            print(objct)
        }
        longStr = longStr + "," + stringRepresentation
    }
    
    let gFormatter = DateFormatter()
    gFormatter.dateFormat = "HH:mm:ss:SSS"
    let timeStamp = gFormatter.string(from: Date())
    let queue = Thread.isMainThread ? "UI":"BG"
    let fileUrl = NSURL(string: file)?.lastPathComponent ?? "Unknown file"
    
    if longStr.count > items.count{
        print("FM \(timeStamp) {\(queue)} \(fileUrl) > \(function)[\(line)]: \(longStr)")
    }else{
        print("FM \(timeStamp) {\(queue)} \(fileUrl) > \(function)[\(line)]: \(items)")
    }
}

后面又更改了一个版本，打印点花花绿绿的东西更醒目

import os
import Foundation

public enum LogLevel{
    case log
    case fault
    case error
    case warn
    case verbose
    case info
    case debug
   
}


public func mprint(level:LogLevel? = .debug,
                    _ items: Any...,
                    separator: String = " ",
                   terminator: String = "\n",
                   _ file:String = #file,
                   _ function:String = #function,
                   _ line:Int = #line){
  
    #if DEBUG
    var longStr:String = ""
    for value in items{
        var stringRepresentation:String = ""
        if let value = value as? CustomStringConvertible{
            stringRepresentation = value.description
        }else if let value = value as? CustomDebugStringConvertible{
            stringRepresentation = value.debugDescription
        }else if let value = value as? LosslessStringConvertible{
            stringRepresentation = value.description
        } else{
            //            fatalError("glog only work for values that conform to CustomStringConvertible or CustomDebugStringConvertible")
            //            print(objct)
        }
        longStr = longStr + "," + stringRepresentation
    }
    
    let gFormatter = DateFormatter()
    gFormatter.dateFormat = "HH:mm:ss:SSS"
    let timeStamp = gFormatter.string(from: Date())
    let queue = Thread.isMainThread ? "UI":"BG"
    let fileUrl = NSURL(string: file)?.lastPathComponent ?? "Unknown file"
    var resultLog = ""
    if longStr.count > items.count{
        resultLog = "M \(timeStamp) {\(queue)} \(fileUrl) > \(function)[\(line)]: \(longStr)"
    }else{
        resultLog = "M \(timeStamp) {\(queue)} \(fileUrl) > \(function)[\(line)]:\(items)"
    }
    let subsystem:String = Bundle.main.bundleIdentifier ?? ""
    let logger = Logger(subsystem: subsystem, category: "")
    switch level {
    case .log:
        logger.log("🤍 \(resultLog)")
    case .debug:
        //🧡
        logger.debug("💚  \(resultLog)")
    case .info:
        logger.info("💙 \(resultLog)")
    case .verbose:
        logger.warning("💜 \(resultLog)")
    case .warn:
        logger.notice("💛 \(resultLog)")
    case .error:
        logger.error("❌ \(resultLog)")
    case .fault:
        logger.fault("💔 \(resultLog)")
    case nil:
        logger.debug("💚 \(resultLog)")
    }
    #else
//    print("")
    #endif
}

参考文章