public FileEnum(string path, FileEnumFlags flags)
{
this.m_flags = flags;
this.m_path = path;
this.m_openForReadHandle = FileSystemManager.AddToOpenListForRead(this.m_path);
this.m_findFile = DriveInfo.GetForPath(this.m_path).Find(this.m_path, "*");
}
protected virtual void Dispose(bool disposing)
{
if (this.m_findFile != null)
{
this.m_findFile.Close();
this.m_findFile = null;
}
if (this.m_openForReadHandle != null)
{
FileSystemManager.RemoveFromOpenList(this.m_openForReadHandle);
this.m_openForReadHandle = null;
}
this.m_disposed = true;
}
public void Reset()
{
if (this.m_disposed)
{
throw new ObjectDisposedException();
}
if (this.m_findFile != null)
{
this.m_findFile.Close();
}
if (this.m_openForReadHandle == null)
{
this.m_openForReadHandle = FileSystemManager.AddToOpenListForRead(this.m_path);
}
this.m_findFile = DriveInfo.GetForPath(this.m_path).Find(this.m_path, "*");
}
public bool MoveNext()
{
if (this.m_disposed)
{
throw new ObjectDisposedException();
}
var fileinfo = this.m_findFile.GetNext();
while (fileinfo != null)
{
if (this.m_flags != FileEnumFlags.FilesAndDirectories)
{
var targetAttribute = (0 != (this.m_flags & FileEnumFlags.Directories) ? FileAttributes.Directory : 0);
if ((fileinfo.Attributes & FileAttributes.Directory) == targetAttribute)
{
this.m_currentFile = fileinfo;
break;
}
}
else
{
this.m_currentFile = fileinfo;
break;
}
fileinfo = this.m_findFile.GetNext();
}
if (fileinfo == null)
{
this.m_findFile.Close();
this.m_findFile = null;
FileSystemManager.RemoveFromOpenList(this.m_openForReadHandle);
this.m_openForReadHandle = null;
}
return(fileinfo != null);
}
private static string[] GetChildren(string path, string searchPattern, bool isDirectory)
{
// path and searchPattern validation in Path.GetFullPath() and Path.NormalizePath()
path = Path.GetFullPath(path);
if (!Directory.Exists(path))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
Path.NormalizePath(searchPattern, true);
var fileNames = new ArrayList();
var root = Path.GetPathRoot(path);
if (false && string.Equals(root, path)) //TODO check to see it always go here
/// This is special case. Return all the volumes.
/// Note this will not work, once we start having \\server\share like paths.
{
if (isDirectory)
{
var volumes = DriveInfo.GetDrives();
var count = volumes.Length;
for (var i = 0; i < count; i++)
{
fileNames.Add(volumes[i].RootDirectory.Name);
}
}
}
else
{
var record = FileSystemManager.AddToOpenListForRead(path);
IFileSystemEntryFinder ff = null;
try {
ff = DriveInfo.GetForPath(path).Find(path, searchPattern);
var targetAttribute = (isDirectory ? FileAttributes.Directory : 0);
var fileinfo = ff.GetNext();
while (fileinfo != null)
{
if ((fileinfo.Attributes & FileAttributes.Directory) == targetAttribute)
{
fileNames.Add(fileinfo.FileName);
}
fileinfo = ff.GetNext();
}
}
finally {
if (ff != null)
{
ff.Close();
}
FileSystemManager.RemoveFromOpenList(record);
}
}
return((string[])fileNames.ToArray(typeof(string)));
}
