90 lines
3.6 KiB
C#
90 lines
3.6 KiB
C#
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using Swan.Logging;
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using System;
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namespace Swan.Lite.Logging
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{
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/// <summary>
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/// Use this class for text-based logger.
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/// </summary>
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public abstract class TextLogger
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{
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/// <summary>
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/// Gets or sets the logging time format.
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/// set to null or empty to prevent output.
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/// </summary>
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/// <value>
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/// The logging time format.
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/// </value>
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public static string LoggingTimeFormat { get; set; } = "HH:mm:ss.fff";
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/// <summary>
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/// Gets the color of the output of the message (the output message has a new line char in the end).
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/// </summary>
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/// <param name="logEvent">The <see cref="LogMessageReceivedEventArgs" /> instance containing the event data.</param>
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/// <returns>
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/// The output message formatted and the color of the console to be used.
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/// </returns>
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protected (string outputMessage, ConsoleColor color) GetOutputAndColor(LogMessageReceivedEventArgs logEvent)
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{
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var (prefix , color) = GetConsoleColorAndPrefix(logEvent.MessageType);
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var loggerMessage = string.IsNullOrWhiteSpace(logEvent.Message)
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? string.Empty
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: logEvent.Message.RemoveControlCharsExcept('\n');
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var outputMessage = CreateOutputMessage(logEvent.Source, loggerMessage, prefix, logEvent.UtcDate);
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// Further format the output in the case there is an exception being logged
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if (logEvent.MessageType == LogLevel.Error && logEvent.Exception != null)
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{
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try
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{
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outputMessage += $"{logEvent.Exception.Stringify().Indent()}{Environment.NewLine}";
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}
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catch
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{
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// Ignore
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}
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}
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return (outputMessage, color);
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}
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private static (string Prefix, ConsoleColor color) GetConsoleColorAndPrefix(LogLevel messageType)
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{
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switch (messageType)
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{
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case LogLevel.Debug:
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return (ConsoleLogger.DebugPrefix, ConsoleLogger.DebugColor);
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case LogLevel.Error:
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return (ConsoleLogger.ErrorPrefix, ConsoleLogger.ErrorColor);
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case LogLevel.Info:
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return (ConsoleLogger.InfoPrefix, ConsoleLogger.InfoColor);
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case LogLevel.Trace:
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return (ConsoleLogger.TracePrefix, ConsoleLogger.TraceColor);
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case LogLevel.Warning:
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return (ConsoleLogger.WarnPrefix, ConsoleLogger.WarnColor);
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case LogLevel.Fatal:
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return (ConsoleLogger.FatalPrefix, ConsoleLogger.FatalColor);
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default:
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return (new string(' ', ConsoleLogger.InfoPrefix.Length), Terminal.Settings.DefaultColor);
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}
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}
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private static string CreateOutputMessage(string sourceName, string loggerMessage, string prefix, DateTime date)
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{
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var friendlySourceName = string.IsNullOrWhiteSpace(sourceName)
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? string.Empty
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: sourceName.SliceLength(sourceName.LastIndexOf('.') + 1, sourceName.Length);
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var outputMessage = string.IsNullOrWhiteSpace(sourceName)
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? loggerMessage
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: $"[{friendlySourceName}] {loggerMessage}";
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return string.IsNullOrWhiteSpace(LoggingTimeFormat)
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? $" {prefix} >> {outputMessage}{Environment.NewLine}"
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: $" {date.ToLocalTime().ToString(LoggingTimeFormat)} {prefix} >> {outputMessage}{Environment.NewLine}";
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}
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}
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}
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