private static IEnumerable <DirectoryInfoBase> GetDirectories(DirectoryInfoBase root, int level, int maxDepth)
{
IEnumerable <DirectoryInfoBase> subDirs = null;
if (maxDepth >= 0 && level > maxDepth)
{
yield break;
}
try
{
subDirs = root.EnumerateDirectories();
}
catch (Exception)
{
yield break;
}
foreach (DirectoryInfoBase dirInfo in subDirs)
{
yield return(dirInfo);
foreach (var recursiveDir in GetDirectories(dirInfo, level + 1, maxDepth))
{
yield return(recursiveDir);
}
}
}
/// <summary>
/// Returns directories and files that are stored in the specified directory
/// </summary>
/// <param name="dir">Start directory</param>
/// <param name="cancelRecursionFlag">Flag to cancel searching</param>
/// <returns>Directories and files that are stored in the specified directory</returns>
private IEnumerable <FileSystemInfoBase> GetDirectoryItems(DirectoryInfoBase dir, ref bool cancelRecursionFlag)
{
var result = new List <FileSystemInfoBase>();
if (cancelRecursionFlag)
{
return(result);
}
foreach (var directory in dir.EnumerateDirectories())
{
var eventParams = new ItemFindedEventArgs {
FullName = directory.FullName
};
OnDirectoryFinded(eventParams);
if (eventParams.CancelSearching)
{
cancelRecursionFlag = true;
result.Add(directory);
return(result);
}
if (!eventParams.ExcludeItemFromResult)
{
result.Add(directory);
}
result.AddRange(GetDirectoryItems(directory, ref cancelRecursionFlag));
if (cancelRecursionFlag)
{
return(result);
}
}
foreach (var fileInfo in dir.EnumerateFiles())
{
var eventParams = new ItemFindedEventArgs {
FullName = fileInfo.FullName
};
OnFileFinded(eventParams);
if (eventParams.CancelSearching)
{
cancelRecursionFlag = true;
result.Add(fileInfo);
return(result);
}
if (!eventParams.ExcludeItemFromResult)
{
result.Add(fileInfo);
}
}
return(result);
}
private IEnumerable <FileSystemInfoBase> GetFilteredItemsSecondWay(DirectoryInfoBase directory)
{
var breakSearch = false;
foreach (var dir in directory.EnumerateDirectories())
{
if (Status == FileSystemVisitorStatus.Stopped)
{
break;
}
var excludeItem = false;
DirectoryFoundEvent?.Invoke(dir, ref breakSearch, ref excludeItem);
if (!breakSearch && !excludeItem)
{
foreach (var i in GetFilteredItemsSecondWay(dir)) //going recursion here
{
yield return(i);
}
}
if (breakSearch)
{
Status = FileSystemVisitorStatus.Stopped;
}
if (excludeItem)
{
continue;
}
if (Filter != null && !Filter.Invoke(dir))
{
continue;
}
yield return(dir);
}
foreach (var file in GetFilteredFiles(directory))
{
yield return(file);
}
}
// Normal implementation for IEnumerable<T>
public IEnumerator <SensorDS18B20> GetEnumerator()
{
DirectoryInfoBase devicesDir = fileSystem_.DirectoryInfo.FromDirectoryName("/sys/bus/w1/devices");
IEnumerable <DirectoryInfoBase> subfolders = null;
try
{
subfolders = devicesDir.EnumerateDirectories("28*");
}
catch (DirectoryNotFoundException e)
{
throw new OneWireModuleNotLoadedException();
}
foreach (var deviceDir in subfolders)
{
//TODO it's strange to pass fileSystem in this way. Assign it using some Dependency Injection framework?
yield return(new SensorDS18B20(deviceDir.Name, fileSystem_));
}
}
private static IEnumerable <DirectoryInfoBase> GetDirectories(DirectoryInfoBase root)
{
IEnumerable <DirectoryInfoBase> subDirs = null;
try
{
subDirs = root.EnumerateDirectories();
}
catch (Exception)
{
yield break;
}
foreach (DirectoryInfoBase dirInfo in subDirs)
{
yield return(dirInfo);
foreach (var recursiveDir in GetDirectories(dirInfo))
{
yield return(recursiveDir);
}
}
}