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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Globalization;
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using System.IO;
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namespace DaoCommon
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{
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public enum LogfileType
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{
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LogTransactions,
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LogEvents,
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LogDiscarded
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}
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public class Logfile : IDisposable
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{
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// Flag: Has Dispose already been called?
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bool disposed = false; //IDisposable
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private LogfileType type;
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private string name;
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private String logDirectory;
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private LinkedList<string> logEntries = new LinkedList<string>();
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StreamWriter realLogFile = null;
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public Logfile(LogfileType type, string logname, string logDirectory)
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{
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this.type = type;
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this.logDirectory = logDirectory;
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this.name = logname;
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}
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public static string getNowString()
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{
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DateTime now = DateTime.Now;
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return now.ToString("s");
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}
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public string getLogFilename()
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{
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return getLogFilename(type, logDirectory, name);
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}
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public static string getLogFilename(LogfileType type, string logDirectory, string name)
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{
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DateTime now = DateTime.Now;
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string filename = logDirectory + "\\";
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//Find uge nr
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DateTimeFormatInfo dfi = DateTimeFormatInfo.CurrentInfo;
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Calendar myCal = CultureInfo.InvariantCulture.Calendar;//System.Globalization
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int week = myCal.GetWeekOfYear(now, dfi.CalendarWeekRule, dfi.FirstDayOfWeek);
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switch (type)
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{
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case LogfileType.LogEvents:
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filename += "eventlog_";
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break;
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case LogfileType.LogTransactions:
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filename += "transactionlog_";
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break;
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case LogfileType.LogDiscarded:
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filename += "discardedlog_";
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break;
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}
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filename += name + "_" + now.Year.ToString("D4") + "_W" + week.ToString("D2") + ".log";
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return filename;
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}
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private void checkAndOpenfile()
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{
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if (realLogFile != null)
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return;
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string filename = getLogFilename();
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realLogFile = new StreamWriter(filename, true);
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}
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public void writeLogEntry(string msg)
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{
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checkAndOpenfile();
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realLogFile.WriteLine(getNowString() + " " + msg);
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realLogFile.Flush();
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}
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public void addSingleLogEntry(string msg)
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{
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msg = Logfile.getNowString() + " " + msg;
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lock (logEntries)
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{
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logEntries.AddFirst(msg);
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if (logEntries.Count > 20)
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{
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logEntries.RemoveLast();
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}
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}
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string filename = getLogFilename();
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using (StreamWriter eventlog = new StreamWriter(filename, true))
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{
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eventlog.WriteLine(msg);
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}
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Console.WriteLine(msg);
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}
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public string[] getLog()
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{
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lock (logEntries)
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{
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List<string> tmpEntries = new List<string>();
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foreach (string s in logEntries)
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{
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tmpEntries.Add(s);
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}
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return tmpEntries.ToArray();
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}
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}
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public void Dispose()
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{
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if (disposed)
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return;
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try
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{
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if (realLogFile != null)
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{
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realLogFile.Close();
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realLogFile.Dispose();
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}
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}
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catch (Exception e)
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{
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Console.WriteLine("Error disposing logfile : ", e.Message);
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}
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// Free any unmanaged objects here.
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//
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disposed = true;
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}
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}
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}
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