public void SetUp()
{
_fileSystemListener = new FileSystemListener();
_fileSystemListener.FolderSystemChanged += HandleFolderSystemChanged;
_eventArgs = null;
DirectoryUtility.EnsureClearFolder(FolderName);
}
protected virtual void OnFolderSystemChanged(string oldPath, string newPath)
{
if (FolderSystemChanged != null)
{
try
{
FileSystemChangeEventArgs args = new FileSystemChangeEventArgs(oldPath, newPath);
FolderSystemChanged(this, args);
}
catch(PathTooLongException)
{
}
}
}
private void HandleFolderSystemChanged(object sender, FileSystemChangeEventArgs e)
{
_eventArgs = e;
}
private void Initialize(bool appRunOnStartup)
{
bool cacheFolderCreated;
_filteredCacheItems = ReadCache(appRunOnStartup, out _cacheUpToDate, out cacheFolderCreated, out _lastFullScanTime);
_fileSystemChanges = new FileSystemChanges();
if (cacheFolderCreated)
{
string cacheFolder = GetCacheFolder();
try
{
FileSystemChangeEventArgs e = new FileSystemChangeEventArgs(null, cacheFolder);
HandleFolderSystemChanged(this, e);
}
catch (PathTooLongException)
{
}
}
//Listen to the changes in the whole system to update the fullCache.
//This handler should be bound just after reading the full cache to ensure that _fullCache is initialized.
_fileSystemListener.FolderSystemChanged += HandleFolderSystemChanged;
_fileSystemListener.StartListening(null);
//Parse file system fully (asynchronously).
if (!_cacheUpToDate)
{
StartFileSystemParsing();
}
}
private void HandleFolderSystemChanged(object sender, FileSystemChangeEventArgs e)
{
lock (_cacheSync)
{
_fileSystemChanges.Changes.Add(e);
//Though we write the cache back to file system in finalizer,
//we try to write it periodically also (to minimize the effect of finalization errors,
//e.g. when the computer is shut down unexpectedly).
_updatesCount++;
if (_updatesCount > _updatesCountToWrite)
{
SerializeChanges();
_updatesCount = 0;
}
Implementation.FileSystemParser.UpdateFolders(_filteredCacheItems, e, _fileSystemFilter.IsCorrect);
}
}
private static string GetChangeItemLine(FileSystemChangeEventArgs item)
{
return string.Format(CultureInfo.InvariantCulture, "{1}{0}{2}", Separator, item.OldFullPath ?? string.Empty, item.NewFullPath ?? string.Empty);
}
