internal static IEnumerable <AlternateDataStreamInfo> EnumerateAlternateDataStreamsCore(KernelTransaction transaction, string path, PathFormat pathFormat)
{
using (var buffer = new SafeGlobalMemoryBufferHandle(Marshal.SizeOf(typeof(NativeMethods.WIN32_FIND_STREAM_DATA))))
{
path = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.CheckInvalidPathChars | GetFullPathOptions.CheckAdditional);
using (var handle = transaction == null
? NativeMethods.FindFirstStreamW(path, NativeMethods.StreamInfoLevels.FindStreamInfoStandard, buffer, 0)
: NativeMethods.FindFirstStreamTransactedW(path, NativeMethods.StreamInfoLevels.FindStreamInfoStandard, buffer, 0, transaction.SafeHandle))
{
if (handle.IsInvalid)
{
int errorCode = Marshal.GetLastWin32Error();
if (errorCode == Win32Errors.ERROR_HANDLE_EOF)
{
yield break;
}
NativeError.ThrowException(errorCode);
}
while (true)
{
NativeMethods.WIN32_FIND_STREAM_DATA data = buffer.PtrToStructure <NativeMethods.WIN32_FIND_STREAM_DATA>(0);
yield return(new AlternateDataStreamInfo(path, data));
if (!NativeMethods.FindNextStreamW(handle, buffer))
{
int lastError = Marshal.GetLastWin32Error();
if (lastError == Win32Errors.ERROR_HANDLE_EOF)
{
break;
}
NativeError.ThrowException(lastError, path);
}
}
}
}
}
internal AlternateDataStreamInfo(string filePath, NativeMethods.WIN32_FIND_STREAM_DATA findData)
{
m_name = ParseStreamName(findData.cStreamName);
m_size = findData.StreamSize;
m_filePath = filePath;
}
internal AlternateDataStreamInfo(string fullPath, NativeMethods.WIN32_FIND_STREAM_DATA findData) : this()
{
StreamName = ParseStreamName(findData.cStreamName);
Size = findData.StreamSize;
_fullPath = fullPath;
}
