protected virtual void OpenFile()

in src/log4net/Appender/FileAppender.cs [1198:1245]

• 39 lines of code
• 4 McCabe index (conditional complexity)

  protected virtual void OpenFile(string fileName, bool append)
  {
    if (LogLog.IsErrorEnabled)
    {
      // Internal check that the fileName passed in is a rooted path
      bool isPathRooted;
      using (SecurityContext?.Impersonate(this))
      {
        isPathRooted = Path.IsPathRooted(fileName);
      }

      if (!isPathRooted)
      {
        LogLog.Error(_declaringType,
            "INTERNAL ERROR. OpenFile(" + fileName + "): File name is not fully qualified.");
      }
    }

    lock (LockObj)
    {
      Reset();

      LogLog.Debug(_declaringType, "Opening file for writing [" + fileName + "] append [" + append + "]");

      // Save these for later, allowing retries if file open fails
      _fileName = fileName;
      AppendToFile = append;

      LockingModel.CurrentAppender = this;
      LockingModel.OpenFile(fileName, append, Encoding);
      _stream = new LockingStream(LockingModel);

      if (_stream is not null)
      {
        _stream.AcquireLock();
        try
        {
          SetQWForFiles(_stream);
        }
        finally
        {
          _stream.ReleaseLock();
        }
      }

      WriteHeader();
    }
  }