HeliumStreamLogger

public class HeliumStreamLogger<OutputStream> : HeliumLogger where OutputStream : TextOutputStream

A HeliumLogger, that prints to a TextOutputStream.


                    
                    
                    use(_:outputStream:)

Create a HeliumStreamLogger instance and set it up as the logger used by the LoggerAPI protocol.

Usage Example:

This example shows logging to stderr.

struct StandardError: TextOutputStream {
    func write(_ text: String) {
        guard let data = text.data(using: String.Encoding.utf8) else {
          return
        }
        FileHandle.standardError.write(data)
    }
}

let se = StandardError()
HeliumStreamLogger.use(outputStream: se)

Declaration

Swift

public static func use(_ type: LoggerMessageType = .verbose, outputStream: OutputStream)

Parameters

`type`	The most detailed message type (`LoggerMessageType`) to see in the output of the logger. Defaults to `verbose`.
`outputStream`	The stream to send the output of the logger to.


                    
                    
                    use(_:)

Prevent the user accidentally invoking the use() function of the superclass. Prints an error message, stating that you should call use(_:outputStream:), no logging is enabled.

Declaration

Swift

override public class func use(_ type: LoggerMessageType = .verbose)

Parameters


                                type

The most detailed message type (LoggerMessageType) to see in the output of the logger. Default to verbose.


                    
                    
                    init(_:outputStream:)

Create a HeliumStreamLogger instance.

Declaration

Swift

public init(_ type: LoggerMessageType = .verbose, outputStream: OutputStream)

Parameters

`type`	The most detailed message type (`LoggerMessageType`) to see in the output of the logger. Defaults to `verbose`.
`outputStream`	The stream to send the output of the logger to.