livingcomputermuseum.ContrAlto/Contralto/Logging/Log.cs

using System;

namespace Contralto.Logging
{
    /// <summary>
    /// Specifies a component to specify logging for
    /// </summary>
    [Flags]
    public enum LogComponent
    {
        None = 0,
        EmulatorTask = 0x1,
        DiskSectorTask = 0x2,
        DiskWordTask = 0x4,
        DiskController = 0x8, 
        Alu = 0x10,       
        Memory = 0x20,
        Keyboard = 0x40,
        Display = 0x80,
        Microcode = 0x100,

        All = 0x7fffffff
    }

    /// <summary>
    /// Specifies the type (or severity) of a given log message
    /// </summary>
    [Flags]
    public enum LogType
    {
        None = 0,
        Normal = 0x1,
        Warning = 0x2,
        Error = 0x4,
        Verbose = 0x8,
        All = 0x7fffffff
    }

    /// <summary>
    /// Provides basic functionality for logging messages of all types.
    /// </summary>
    public static class Log
    {
        static Log()
        {
            // TODO: make configurable
            _components = LogComponent.None;
            _type = LogType.Normal | LogType.Warning | LogType.Error;
        }

        /// <summary>
        /// Logs a message without specifying type/severity for terseness;
        /// will not log if Type has been set to None.
        /// </summary>
        /// <param name="level"></param>
        /// <param name="message"></param>
        /// <param name="args"></param>
        public static void Write(LogComponent component, string message, params object[] args)
        {
            Write(LogType.Normal, component, message, args);            
        }

        public static void Write(LogType type, LogComponent component, string message, params object[] args)
        {
            if ((_type & type) != 0 &&
                (_components & component) != 0)
            {
                //
                // My log has something to tell you...
                // TODO: color based on type, etc.
                Console.WriteLine(component.ToString() + ": " + message, args);
            }
        }



        private static LogComponent _components;
        private static LogType _type;
    }
}