/// <summary>
/// Ensures the writer in a way how standard .net 2.0 XmlWriterTraceListener does it.
/// </summary>
/// <returns></returns>
private bool EnsureWriter()
{
bool flag = true;
if (writer == null)
{
flag = false;
if (fileName == null)
{
return flag;
}
string fullPath = Path.GetFullPath(fileName);
string directoryName = Path.GetDirectoryName(fullPath);
fileName = Path.GetFileName(fullPath);
for (int i = 0; i < 2; i++)
{
try
{
if (textWriterProvider == null)
{
textWriterProvider = new FileTextWriterProvider(
true, GetEncodingWithFallback(new UTF8Encoding(false)), 0x1000);
}
writer = textWriterProvider.CreateWriter(fullPath);
flag = true;
break;
}
catch (IOException)
{
fileName = Guid.NewGuid() + fileName;
fullPath = Path.Combine(directoryName, fileName);
}
catch (UnauthorizedAccessException)
{
break;
}
catch (Exception)
{
break;
}
}
if (!flag)
{
fileName = null;
}
}
return flag;
}
private void CreateNewWriter()
{
if (writer != null)
{
if (xmlBlobWriter != null)
{
xmlBlobWriter.Flush();
}
writer.Flush();
writer.Close();
//writer = null;
}
string targetFileName = fileStaticName + DateTime.UtcNow.ToString(fileDatetimePattern);
string pathCandidate = null;
int maxIter = 10;
for (int i = 1; i < maxIter; i++)
{
if (!File.Exists(logRootLocation + targetFileName + "_" + i + ".xml"))
{
pathCandidate = Path.Combine(logRootLocation,
targetFileName + "_" + i + ".xml");
break;
}
}
if (pathCandidate == null)
{
// fallback name, uses guid
pathCandidate = Path.Combine(logRootLocation,
fileStaticName + Guid.NewGuid() + ".xml");
}
logFilePath = pathCandidate;
if (textWriterProvider == null)
{
textWriterProvider = new FileTextWriterProvider(
true, GetEncodingWithFallback(new UTF8Encoding(false)), 0x1000);
}
writer = textWriterProvider.CreateWriter(logFilePath);
if (logFileHelper == null)
{
logFileHelper = new LogFileHelper();
}
logFileHelper.MaxFileSizeBytes = maxFileSizeBytes;
logFileHelper.FilePath = logFilePath;
}