private void Purge()
{
if (KeepCount == 0)
{
return;
}
try
{
bool ResolveDate(FileItem item)
{
string dateCode = Path.GetFileNameWithoutExtension(item.FilePath).Replace(Code, string.Empty);
dateCode = dateCode.SplitNoEmptyLines(" (")[0];
try
{
item.Date = SQLiteDate.ToDateTime(dateCode.Trim());
return(true);
}
catch
{
return(false);
}
}
var list = Directory.GetFiles(Folder, $"{Code}*{Extension}")
.Select(path => new FileItem {
FilePath = path
})
.Where(item => ResolveDate(item));
DateTime limit;
switch (Mode)
{
case TraceFileRollOverMode.Daily:
limit = DateTime.Now.Date.AddDays(-KeepCount);
break;
case TraceFileRollOverMode.Monthly:
limit = DateTime.Now.Date.AddMonths(-KeepCount);
break;
default:
throw new AdvancedNotImplementedException(Mode);
}
foreach (var file in list.Where(f => f.Date <= limit))
{
try
{
File.Delete(file.FilePath);
}
catch
{
}
}
}
catch
{
}
}
private string GenerateFilePath()
{
Purge();
Date = DateTime.Today;
string ProcessName = SystemManager.AllowMultipleInstances ? $" ({Globals.ProcessId})" : string.Empty;
FilePath = Path.Combine(Folder, $"{Code} {SQLiteDate.ToString(Date)}{ProcessName}{Extension}");
SystemManager.TryCatchManage(() => { Changed?.Invoke(this, FilePath); });
return(FilePath);
}