Question

代码是：

let redColor = "\u{001B}[0;31m"
var message = "Some Message"
print(redColor + message)  //This doesnt work
print("\(redColor)\(message)" //This also doesnt work

，输出如下：

[0;31mSome Message

我还阅读了这篇文章：Color ouput with Swift command line tool，它似乎无法发挥作用。

我不想使用图书馆。

Answer 1

如今，Xcode调试控制台不支持着色。

Answer 2

从Xcode 8开始，Xcode不支持控制台着色。

但是，由于Xcode完全兼容unicode，因此您可以改用 emojis ！例如，您可以使用您可以使用⚠️表示警告消息，使用?表示错误消息。（如Xcode本身）

或仅将这些笔记本用作颜色：

?: error message
?: warning message
?: ok status message
?: action message
?: canceled status message
?: Or anything you like and want to recognize immediately by color

Answer 3

添加到@Mojtaba's answer中后，您可以将其用于自动记录日志：

enum LogType: String{
case error
case warning
case success
case action
case canceled
}


class Logger{

 static func log(_ logType:LogType,_ message:String){
        switch logType {
        case LogType.error:
            print("\n? Error: \(message)\n")
        case LogType.warning:
            print("\n? Warning: \(message)\n")
        case LogType.success:
            print("\n? Success: \(message)\n")
        case LogType.action:
            print("\n? Action: \(message)\n")
        case LogType.canceled:
            print("\n? Cancelled: \(message)\n")
        }
    }

}

您可以通过以下方式使用它：

Logger.log(.error, "Invalid Credit Information")

Answer 4

正如@LeslieGodwin所提到的，XcodeColors Xcode插件为Xcode控制台添加了颜色支持。

Answer 5

添加我自己的贡献：

struct Logger {
    /// Type of logs available
    enum LogType: String {
        /// To log a message
        case debug
        /// To log a warning
        case warning
        /// To log an error
        case error
    }
    
    /// Logs a debug message
    /// - Parameter message: Message to log
    /// - Parameter file: File that calls the function
    /// - Parameter line: Line of code from the file where the function is call
    /// - Parameter function: Function that calls the functon
    /// - Returns: The optional message that was logged
    @discardableResult
    static func d(message: String, file: String = #file, line: Int = #line, function: String = #function) -> String{
        return log(type: .debug, message: message, file: file, line: line, function: function)
    }
    
    /// Logs a warning message
    /// - Parameter message: Message to log
    /// - Parameter file: File that calls the function
    /// - Parameter line: Line of code from the file where the function is call
    /// - Parameter function: Function that calls the functon
    /// - Returns: The optional message that was logged
    @discardableResult
    static func w(message: String, file: String = #file, line: Int = #line, function: String = #function) -> String{
        return log(type: .warning, message: message, file: file, line: line, function: function)
    }
    
    /// Logs an error message
    /// - Parameter message: Message to log
    /// - Parameter file: File that calls the function
    /// - Parameter line: Line of code from the file where the function is call
    /// - Parameter function: Function that calls the functon
    /// - Returns: The optional message that was logged
    @discardableResult
    static func e(message: String, file: String = #file, line: Int = #line, function: String = #function) -> String{
        return log(type: .error, message: message, file: file, line: line, function: function)
    }
    
    /// Logs an message
    /// - Parameter logType: Type of message to log
    /// - Parameter message: Message to log
    /// - Parameter file: File that calls the function
    /// - Parameter line: Line of code from the file where the function is call
    /// - Parameter function: Function that calls the functon
    /// - Returns: The optional message that was logged
    @discardableResult
    static func log(type logType: LogType = .debug, message: String, file: String = #file, line: Int = #line, function: String = #function) -> String{
        var logMessage = ""
        
        switch logType{
        case .debug:
            logMessage += "?"
        case .warning:
            logMessage += "?"
        case .error:
            logMessage += "?"
        }
        
        let fileName = file.components(separatedBy: "/").last ?? ""
        logMessage += " \(fileName) -> LINE: \(line) -> \(function) => \(message)"
        
        print(logMessage)
        return logMessage
    }

}

您始终可以使用“ crtl + cmd + space”更改图标

Answer 6

如果您正在 Xcode 中寻找替代颜色日志记录，请查看我创建的这个新的 swift-log 功能。

https://github.com/nneuberger1/swift-log-console-colors

它使用新的标准 swift-log 兼容库。

如果传入.cool，输出将如下所示

2021-05-09T16:13:30-0500 ? debug thingsAboveAdmin : Testing log levels..
2021-05-09T16:13:30-0500 ℹ️ info thingsAboveAdmin : Testing log levels..
2021-05-09T16:13:30-0500 ? notice thingsAboveAdmin : Testing log levels..
2021-05-09T16:13:30-0500 ⚠️ warning thingsAboveAdmin : Testing log levels..
2021-05-09T16:13:30-0500 ⚡ critical thingsAboveAdmin : Testing log levels..
2021-05-09T16:13:30-0500 ? error thingsAboveAdmin : Testing log levels..

如果传入.rainbow，输出将如下所示

2021-05-09T16:17:07-0500 ? debug thingsAboveAdmin : Testing log levels..
2021-05-09T16:17:07-0500 ? info thingsAboveAdmin : Testing log levels..
2021-05-09T16:17:07-0500 ? notice thingsAboveAdmin : Testing log levels..
2021-05-09T16:17:07-0500 ? warning thingsAboveAdmin : Testing log levels..
2021-05-09T16:17:07-0500 ? critical thingsAboveAdmin : Testing log levels..
2021-05-09T16:17:07-0500 ? error thingsAboveAdmin : Testing log levels..

print（）到控制台日志的颜色

6 个答案: