/// <summary>
/// Advances the enumerator to the next log item of the currently read log file. If there
/// are no more items in this file and there is a NextReader set, the first log item of the
/// next file reader is selected. If there are no more items in this file and WaitMode is
/// set, the method will block until another log item is appended to the current file or
/// the wait operation is cancelled by a close event.
/// </summary>
/// <returns>true if the enumerator was successfully advanced to the next log item;
/// false if the enumerator has passed the end of the collection.</returns>
public bool MoveNext()
{
FieldLogFileReader nextReader = null;
do
{
if (nextReader != null)
{
FL.Trace(reader.ItemCount + " items read from " + Path.GetFileName(reader.FileName));
reader = nextReader;
FL.Trace("Switching to next reader " + Path.GetFileName(reader.FileName));
}
try
{
item = reader.ReadLogItem();
}
catch (Exception ex)
{
FL.Error(ex, "Reading item from log file");
OnError(ex);
// Skip the rest of the current file and continue with the next one if
// available. If this is the last file and WaitMode is set, this priority will
// not be monitored anymore.
item = null;
}
if (item == null && reader.IsClosing)
{
// Close event must have been set
Dispose();
return(false);
}
nextReader = reader.NextReader;
}while (item == null && nextReader != null);
return(item != null);
}
