public void Dispose()
{
if (this._currentEnumerator != null)
{
this._currentEnumerator.Dispose();
this._currentEnumerator = null;
}
while (this._enumerators.Count > 0)
{
FolderEnumerator e = this._enumerators.Pop();
e.Dispose();
}
}
private bool MoveNext_Recursive_FilesAndFolders()
{
bool result = false;
result = this._currentEnumerator.MoveNext();
//If success and we have a file, just return it
if (result && this.Current is FileInfo)
{
return(result);
}
//If success and we have a folder - descend into it
if (result && this.Current is DirectoryInfo)
{
//Push the enumerator on the stack
this._enumerators.Push(this._currentEnumerator);
//Create a new enumerator and set it as the current one.
this._currentEnumerator = new FolderEnumerator(this.Current.FullName);
//Call back into this method
return(this.MoveNext_Recursive_FilesAndFolders());
}
//If not success, then we're at the end of the current folder
//If there are no more enumerators then we're done.
if (!result && this._enumerators.Count == 0)
{
this._currentEnumerator.Dispose(); return(result);
}
//Not success, pop the enumerator off the stack if there is one
if (!result && this._enumerators.Count > 0)
{
//Clean up the current before letting go of it.
this._currentEnumerator.Dispose();
//Get one off the stack
this._currentEnumerator = this._enumerators.Pop();
//This one should have a folder on it waiting for us, return it.
if (this.Current is DirectoryInfo)
{
return(true);
}
}
return(result);
}
private bool MoveNext_Recursive_FilesOnly()
{
bool result = false;
result = this._currentEnumerator.MoveNext();
//If success and we have a file, just return it
if (result && this.Current is FileInfo)
{
return(result);
}
//If success and we have a folder - descend into it
if (result && this.Current is DirectoryInfo)
{
//Push the enumerator on the stack
this._enumerators.Push(this._currentEnumerator);
//Create a new enumerator and set it as the current one.
this._currentEnumerator = new FolderEnumerator(this.Current.FullName);
//Call back into this method
return(this.MoveNext_Recursive_FilesOnly());
}
//If not success, then we're at the end of the current folder
//If there are no more enumerators then we're done.
if (!result && this._enumerators.Count == 0)
{
this._currentEnumerator.Dispose(); return(result);
}
//If there are enumerators then we need to pop one off the stack
//Keep going till we have something other than a directory or no more file system entries
while (!result && this._enumerators.Count > 0)
{
//Clean up the current before letting go of it.
this._currentEnumerator.Dispose();
//Get one off the stack
this._currentEnumerator = this._enumerators.Pop();
//Call back into this method
return(this.MoveNext_Recursive_FilesOnly());
}
return(result);
}
private bool MoveNext_Recursive_FoldersOnly()
{
bool result = false;
//Run till we get another folder.
while ((result = this._currentEnumerator.MoveNext()) && this.Current is FileInfo)
{
}
//If success, we're guaranteed to have a folder, descend into the folder without returning it at this point.
if (result)
{
//Push it on to the stack
this._enumerators.Push(this._currentEnumerator);
//Set the curretn enumerator o this folder
this._currentEnumerator = new FolderEnumerator(this.Current.FullName);
//Call back into this method
return(this.MoveNext_Recursive_FoldersOnly());
}
//Not success and there are none left on the stack, then just return false. we're done
if (!result && this._enumerators.Count == 0)
{
this._currentEnumerator.Dispose(); return(false);
}
//Not success, pop the enumerator off the stack if there is one
if (!result && this._enumerators.Count > 0)
{
//Clean up the current before letting go of it.
this._currentEnumerator.Dispose();
//Get one off the stack
this._currentEnumerator = this._enumerators.Pop();
//This one should have a folder on it waiting for us, return it.
if (this.Current is DirectoryInfo)
{
return(true);
}
}
return(result);
}
internal FSEnumerator(string rootFolder, EnumertorType type = EnumertorType.FilesOnly)
{
this._type = type;
this._currentEnumerator = new FolderEnumerator(rootFolder);
}
