public override Int32 CanDelete(
Object fileNode,
Object fileDesc0,
String fileName)
{
FileDescriptor fileDesc = (FileDescriptor)fileDesc0;
if (fileDesc.IsWriteable())
{
fileDesc.SetDisposition(false);
return(STATUS_SUCCESS);
}
else
{
return(STATUS_ACCESS_DENIED);
}
}
public void MakeWriteable(FileDescriptor fileDesc)
{
if (!fileDesc.IsWriteable())
{
var path = Path.GetDirectoryName(GetWritePath(fileDesc.FileName));
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
path = GetWritePath(fileDesc.FileName);
File.Copy(GetReadOnlyPath(fileDesc.FileName), path, true);
fileDesc.WriteStream = new FileStream(
path,
FileMode.Open,
FileAccess.ReadWrite,
FileShare.Read | FileShare.Write | FileShare.Delete,
4096, 0);
}
}
public override Boolean ReadDirectoryEntry(
Object fileNode,
Object fileDesc0,
String pattern,
String marker,
ref Object context,
out String fileName,
out FileInfo fileInfo)
{
FileDescriptor fileDesc = (FileDescriptor)fileDesc0;
if (null == fileDesc.FileSystemInfos)
{
if (null != pattern)
{
pattern = pattern.Replace('<', '*').Replace('>', '?').Replace('"', '.');
}
else
{
pattern = "*";
}
SortedList list = new SortedList();
if (fileDesc.IsWriteable())
{
if (null != fileDesc.WriteDirInfo && null != fileDesc.WriteDirInfo.Parent)
{
list.Add(".", fileDesc.WriteDirInfo);
list.Add("..", fileDesc.WriteDirInfo.Parent);
}
}
else
{
if (null != fileDesc.ReadOnlyDirInfo && null != fileDesc.ReadOnlyDirInfo.Parent)
{
list.Add(".", fileDesc.ReadOnlyDirInfo);
list.Add("..", fileDesc.ReadOnlyDirInfo.Parent);
}
}
if (fileDesc.WriteDirInfo != null)
{
IEnumerable e = fileDesc.WriteDirInfo.EnumerateFileSystemInfos(pattern);
foreach (FileSystemInfo info in e)
{
list.Add(info.Name, info);
}
}
if (fileDesc.ReadOnlyDirInfo != null)
{
IEnumerable e = fileDesc.ReadOnlyDirInfo.EnumerateFileSystemInfos(pattern);
foreach (FileSystemInfo info in e)
{
if (!list.ContainsKey(info.Name))
{
list.Add(info.Name, info);
}
}
}
fileDesc.FileSystemInfos = new DictionaryEntry[list.Count];
list.CopyTo(fileDesc.FileSystemInfos, 0);
}
int index;
if (null == context)
{
index = 0;
if (null != marker)
{
index = Array.BinarySearch(fileDesc.FileSystemInfos,
new DictionaryEntry(marker, null),
Utils._DirectoryEntryComparer);
if (0 <= index)
{
index++;
}
else
{
index = ~index;
}
}
}
else
{
index = (int)context;
}
if (fileDesc.FileSystemInfos.Length > index)
{
context = index + 1;
fileName = (String)fileDesc.FileSystemInfos[index].Key;
Utils.GetFileInfoFromFileSystemInfo(
(FileSystemInfo)fileDesc.FileSystemInfos[index].Value,
out fileInfo);
return(true);
}
else
{
fileName = default(String);
fileInfo = default(FileInfo);
return(false);
}
}
