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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Tango.Logging;
namespace Tango.Logging
{
public class ApplicationLogFileParser : ILogFileParser<LogItemBase>
{
public List<LogFile> GetLogFiles()
{
List<LogFile> logFiles = new List<LogFile>();
FileLogger logger = LogManager.Default.RegisteredLoggers.FirstOrDefault(x => x.GetType() == typeof(FileLogger)) as FileLogger;
HashSet<string> dateStrings = new HashSet<string>();
foreach (var file in Directory.GetFiles(FileLogger.DefaultLogsFolder, "*.log").Where(x => (Path.GetFileName(x).StartsWith(logger.Tag) && x != logger.LogFile)))
{
try
{
String dateString = Path.GetFileNameWithoutExtension(file).Replace($"{logger.Tag}-", "");
int indexPos = dateString.IndexOf(FileLogger.FILE_SET_EXTENSION);
int indexOfFile = 0;
if (indexPos > 0)
{
string fileNameIndex = dateString.Substring(indexPos + FileLogger.FILE_SET_EXTENSION.Length);
int.TryParse(fileNameIndex, out indexOfFile);
dateString = dateString.Substring(0, indexPos);
}
if (!dateStrings.Contains(dateString))
{
dateStrings.Add(dateString);
DateTime date = DateTime.ParseExact(dateString, "dd-MM-yyyy_HH-mm-ss", CultureInfo.InvariantCulture);
logFiles.Add(new LogFile() { DateTime = date, File = file, PartOfSet = indexOfFile > 0, });
}
}
catch (Exception ex)
{
LogManager.Default.Log(ex, $"Could not load application log file {Path.GetFileName(file)}");
}
}
return logFiles;
}
public List<LogItemBase> Parse(LogFile logFile)
{
List<LogItemBase> logItems = new List<LogItemBase>();
List<LogFile> logFiles = new List<LogFile>();
FileLogger logger = LogManager.Default.RegisteredLoggers.FirstOrDefault(x => x.GetType() == typeof(FileLogger)) as FileLogger;
if (logFile.PartOfSet)
{
string fileName = Path.GetFileNameWithoutExtension(logFile.File);
string extension = Path.GetExtension(logFile.File);
int indexPos = fileName.IndexOf(FileLogger.FILE_SET_EXTENSION);
if (indexPos > 0)
{
fileName = fileName.Substring(0, indexPos);
}
string[] fileEntries = Directory.GetFiles(FileLogger.DefaultLogsFolder, $"{fileName}*{extension}").Where(x => Path.GetFileName(x).StartsWith(logger.Tag) && x != logger.LogFile).OrderBy(x => x).ToArray();
foreach (var file in fileEntries)
{
Parse(file, logFile.DateTime, ref logItems);
}
}
else
{
Parse(logFile.File, logFile.DateTime, ref logItems);
}
return logItems;
}
public List<LogItemBase> Parse(String file, DateTime fileDate)
{
List<LogItemBase> logs = new List<LogItemBase>();
Parse(file, fileDate, ref logs);
return logs;
}
private void Parse(string file, DateTime datetime, ref List<LogItemBase> logItems)
{
if(File.Exists(file))
{
String text = File.ReadAllText(file);
var logs = Regex.Split(text, @"(\[\d{2}:\d{2}:\d{2}.\d{2}\])");
for (int i = 1; i < logs.Length; i += 2)
{
try
{
DateTime date = DateTime.ParseExact(logs[i].Replace("[", "").Replace("]", ""), "HH:mm:ss.ff", CultureInfo.InvariantCulture);
String rest = logs[i + 1];
var matches = Regex.Matches(rest, @"(?<=\[)(.*?)(?=\])");
MessageLogItem item = new MessageLogItem();
item.TimeStamp = new DateTime(datetime.Year, datetime.Month, datetime.Day, date.Hour, date.Minute, date.Second, date.Millisecond);
item.Category = (LogCategory)Enum.Parse(typeof(LogCategory), matches[0].ToString());
item.CallerFile = matches[1].ToString();
item.CallerMethodName = matches[2].ToString();
item.CallerLineNumber = int.Parse(matches[3].ToString());
int messageStartIndex = matches[3].Index + matches[3].Length + 2;
item.Message = rest.Substring(messageStartIndex, rest.Length - messageStartIndex);
logItems.Add(item);
}
catch (Exception ex)
{
LogManager.Default.Log(ex, "Could not parse log line: " + logs[i]);
}
}
}
}
}
}
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