Log.cs

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// Use #define DebugLog or #undef DebugLog to turn debug log messages on or off.
#define DEBUGLOG

using System;
using System.IO;
using System.Diagnostics;

namespace DirectOutput
{
    public class Log
    {
        static StreamWriter Logger;
        static bool IsInitialized = false;
        static bool IsOk = false;

        private static object Locker = new object();

        private static string _Filename = ".\\DirectOutput.log";

        public static string Filename
        {
            get { return _Filename; }
            set { _Filename = value; }
        }


        public static void Init()
        {
            lock (Locker)
            {
                if (!IsInitialized)
                {
                    try
                    {
                        Logger = File.AppendText(Filename);

                        Logger.WriteLine("---------------------------------------------------------------------------------");
                        Logger.WriteLine("{0}\t{1}", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss.fff"), "DirectOutput Logger initialized");

                        Version V = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
                        DateTime BuildDate = new DateTime(2000, 1, 1).AddDays(V.Build).AddSeconds(V.Revision * 2);
                        Logger.WriteLine("{0}\t{1}", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss.fff"), "DirectOutput Version {0} as of {1}".Build(V.ToString(), BuildDate.ToString("yyyy.MM.dd HH:mm")));

                        IsOk = true;

                        Debug("Writting of debug log messages is enabled");



                    }
                    catch
                    {
                        IsOk = false;
                    }

                    IsInitialized = true;
                }
            }
        }

        public static void Finish()
        {
            lock (Locker)
            {
                if (Logger != null)
                {
                    Write("Logging stopped");
                    Logger.Flush();
                    Logger.Close();
                    IsOk = false;
                    IsInitialized = false;
                    Logger = null;
                }
            }
        }


        public static void Write(string Message)
        {

            lock (Locker)
            {
                if (IsOk)
                {
                    try
                    {

                        if (Message.IsNullOrWhiteSpace())
                        {
                            Logger.WriteLine("{0}\t{1}", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss.fff"), "");
                        }
                        else
                        {
                            foreach (string M in Message.Split(new[] { '\r', '\n' }))
                            {
                                Logger.WriteLine("{0}\t{1}", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss.fff"), M);
                            }
                        }
                        Logger.Flush();
                    }
                    catch
                    {

                    }
                }
            }
        }

        public static void Warning(string Message)
        {
            Write("Warning: {0}".Build(Message));
        }

        public static void Exception(string Message = "", Exception E = null)
        {
            lock (Locker)
            {
                if (!Message.IsNullOrWhiteSpace())
                {
                    Write("EXCEPTION: {0}".Build(Message));
                }
                if (E != null)
                {
                    Write("EXCEPTION: {0}".Build(E.Message));

                    foreach (string S in E.StackTrace.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries))
                    {
                        Write("EXCEPTION: Stacktrace: {0}".Build(S));
                    }

                    if (E.TargetSite != null)
                    {
                        Write("EXCEPTION: Targetsite: {0}".Build(E.TargetSite.ToString()));
                    }



                    try
                    {
                        // Get stack trace for the exception with source file information
                        StackTrace ST = new StackTrace(E, true);
                        // Get the top stack frame
                        StackFrame Frame = ST.GetFrame(0);

                        int Line = Frame.GetFileLineNumber();
                        string ExceptionFilename = Frame.GetFileName();

                        Write("EXCEPTION: Location: LineNr {0} in {1]".Build(Line, ExceptionFilename));
                    }
                    catch { }

                    int Level = 1;
                    while (E.InnerException != null)
                    {
                        E = E.InnerException;
                        Write("EXCEPTION: InnerException {0}: {1}".Build(Level, E.Message));
                        Level++;

                        if (Level > 20)
                        {
                            break;
                        }
                    }
                }
            }
        }

        public static void Exception(Exception E = null)
        {
            Exception("", E);
        }


        //TODO: Make conditional compilation work
        [Conditional("DEBUGLOG")]
        public static void Debug(string Message = "")
        {
            Write("Debug: {0}".Build(Message));

        }


    }
}