/src/NUnit/core/InternalTrace.cs

// ****************************************************************

// Copyright 2008, Charlie Poole

// This is free software licensed under the NUnit license. You may

// obtain a copy of the license at http://nunit.org.

// ****************************************************************



using System;



namespace NUnit.Core

{

    /// <summary>

    /// InternalTraceLevel is an enumeration controlling the

    /// level of detailed presented in the internal log.

    /// </summary>

    public enum InternalTraceLevel

    {

        Default,

        Off,

        Error,

        Warning,

        Info,

        Verbose

    }

    

    /// <summary>

	/// Summary description for Logger.

	/// </summary>

	public class InternalTrace

	{

        private readonly static string TIME_FMT = "HH:mm:ss.fff";



		private static bool initialized;



        private static InternalTraceWriter writer;

        public static InternalTraceWriter Writer

        {

            get { return writer; }

        }



		public static InternalTraceLevel Level;



        public static void Initialize(string logName)

        {

            int lev = (int) new System.Diagnostics.TraceSwitch("NTrace", "NUnit internal trace").Level;

            Initialize(logName, (InternalTraceLevel)lev);

        }



        public static void Initialize(string logName, InternalTraceLevel level)

        {

			if (!initialized)

			{

				Level = level;



				if (writer == null && Level > InternalTraceLevel.Off)

				{

					writer = new InternalTraceWriter(logName);

					writer.WriteLine("InternalTrace: Initializing at level " + Level.ToString());

				}



				initialized = true;

			}

        }



        public static void Flush()

        {

            if (writer != null)

                writer.Flush();

        }



        public static void Close()

        {

            if (writer != null)

                writer.Close();



            writer = null;

        }



        public static Logger GetLogger(string name)

		{

			return new Logger( name );

		}



		public static Logger GetLogger( Type type )

		{

			return new Logger( type.FullName );

		}



        public static void Log(InternalTraceLevel level, string message, string category)

        {

            Log(level, message, category, null);

        }



        public static void Log(InternalTraceLevel level, string message, string category, Exception ex)

        {

            Writer.WriteLine("{0} {1,-5} [{2,2}] {3}: {4}",

                DateTime.Now.ToString(TIME_FMT),

                level == InternalTraceLevel.Verbose ? "Debug" : level.ToString(),

#if NET_2_0

                System.Threading.Thread.CurrentThread.ManagedThreadId,

#else

                AppDomain.GetCurrentThreadId(),

#endif

                category,

                message);



            if (ex != null)

                Writer.WriteLine(ex.ToString());

        }

    }

}