public static bool CheckRegex(string line, RegexPattern regex, out AnalogyLogMessage message)
{
try
{
Match match = Regex.Match(line, regex.Pattern,
RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
if (match.Success)
{
var m = new AnalogyLogMessage();
foreach (var regexMember in regexMapper)
{
string value = match.Groups[regexMember.Key].Success
? match.Groups[regexMember.Key].Value
: string.Empty;
switch (regexMember.Value)
{
case AnalogyLogMessagePropertyName.Date:
if (!string.IsNullOrEmpty(value) &&
DateTime.TryParseExact(value, regex.DateTimeFormat, CultureInfo.InvariantCulture,
DateTimeStyles.None, out var date))
{
m.Date = date;
}
continue;
case AnalogyLogMessagePropertyName.Id:
if (!string.IsNullOrEmpty(value) &&
Guid.TryParseExact(value, regex.GuidFormat, out var guidValue))
{
m.Id = guidValue;
}
continue;
case AnalogyLogMessagePropertyName.Text:
m.Text = value;
continue;
case AnalogyLogMessagePropertyName.Category:
m.Category = value;
continue;
case AnalogyLogMessagePropertyName.Source:
m.Source = value;
break;
case AnalogyLogMessagePropertyName.Module:
m.Module = value;
continue;
case AnalogyLogMessagePropertyName.MethodName:
m.MethodName = value;
continue;
case AnalogyLogMessagePropertyName.MachineName:
m.MachineName = value;
continue;
case AnalogyLogMessagePropertyName.FileName:
m.FileName = value;
continue;
case AnalogyLogMessagePropertyName.User:
m.User = value;
continue;
case AnalogyLogMessagePropertyName.LineNumber:
if (!string.IsNullOrEmpty(value) &&
int.TryParse(value, out var lineNum))
{
m.LineNumber = lineNum;
}
continue;
case AnalogyLogMessagePropertyName.ProcessId:
if (!string.IsNullOrEmpty(value) &&
int.TryParse(value, out var processNum))
{
m.ProcessId = processNum;
}
continue;
case AnalogyLogMessagePropertyName.ThreadId:
if (!string.IsNullOrEmpty(value) &&
int.TryParse(value, out var threadNum))
{
m.ThreadId = threadNum;
}
continue;
case AnalogyLogMessagePropertyName.Level:
switch (value)
{
case "OFF":
m.Level = AnalogyLogLevel.None;
break;
case "TRACE":
m.Level = AnalogyLogLevel.Trace;
break;
case "DEBUG":
m.Level = AnalogyLogLevel.Debug;
break;
case "INFO":
m.Level = AnalogyLogLevel.Information;
break;
case "WARN":
m.Level = AnalogyLogLevel.Warning;
break;
case "ERROR":
m.Level = AnalogyLogLevel.Error;
break;
case "FATAL":
m.Level = AnalogyLogLevel.Critical;
break;
default:
m.Level = AnalogyLogLevel.Unknown;
break;
}
continue;
case AnalogyLogMessagePropertyName.Class:
if (string.IsNullOrEmpty(value))
{
m.Class = AnalogyLogClass.General;
}
else
{
m.Class = Enum.TryParse(value, true, out AnalogyLogClass cls) &&
Enum.IsDefined(typeof(AnalogyLogClass), cls)
? cls
: AnalogyLogClass.General;
}
continue;
default:
throw new ArgumentOutOfRangeException();
}
}
message = m;
return(true);
}
message = null;
return(false);
}
catch (Exception e)
{
string error = $"Error parsing line: {e.Message}";
message = new AnalogyLogMessage(error, AnalogyLogLevel.Error, AnalogyLogClass.General,
nameof(RegexParser));
return(false);
}
}
protected bool Equals(RegexPattern other) => Pattern == other.Pattern && DateTimeFormat == other.DateTimeFormat && GuidFormat == other.GuidFormat && SupportFormats.SequenceEqual(other.SupportFormats);
public async Task <List <AnalogyLogMessage> > ParseLog(string fileName, CancellationToken token,
ILogMessageCreatedHandler messagesHandler)
{
_messages.Clear();
using (var fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
bool TryParseInternal(string line, out AnalogyLogMessage msg)
{
if (_matchedPattern != null)
{
if (TryParse(line, _matchedPattern, out var m1))
{
msg = m1;
return(true);
}
msg = null;
return(false);
}
foreach (var logPattern in _logPatterns)
{
if (TryParse(line, logPattern, out var m2))
{
msg = m2;
_matchedPattern = logPattern;
return(true);
}
}
msg = null;
return(false);
}
using (var streamReader = new StreamReader(fileStream, Encoding.UTF8))
{
string line = string.Empty;
string currentLine;
while ((currentLine = await streamReader.ReadLineAsync().ConfigureAwait(false)) != null)
{
line += currentLine;
if (TryParseInternal(line, out var entry))
{
line = string.Empty;
}
else
{
if (string.IsNullOrEmpty(line))
{
line = currentLine;
}
continue;
}
if (entry != null)
{
if (updateUIAfterEachParsedLine)
{
messagesHandler.AppendMessage(entry, fileName);
}
_current = entry;
_messages.Add(_current);
}
else
{
if (_current == null)
{
_current = new AnalogyLogMessage {
Text = line
};
}
else
{
_current.Text += Environment.NewLine + line;
}
}
if (token.IsCancellationRequested)
{
messagesHandler.AppendMessages(_messages, fileName);
return(_messages);
}
}
}
}
if (!updateUIAfterEachParsedLine) //update only at the end
{
messagesHandler.AppendMessages(_messages, fileName);
}
return(_messages);
}
public bool Contains(RegexPattern regexPattern) => RegexPatterns.Contains(regexPattern);
