private static FindFileHandle BeginFind(string searchPattern, out WindowsNative.WIN32_FIND_DATA findData)
{
FindFileHandle handle = null;
if (KtmTransaction.IsInTransaction)
{
handle = WindowsNative.FindFirstFileTransacted(
searchPattern
, WindowsNative.FINDEX_INFO_LEVELS.FindExInfoBasic
, out findData
, WindowsNative.FINDEX_SEARCH_OPS.FindExSearchNameMatch
, IntPtr.Zero
, 0 // 1 - case sensitive
, KtmTransaction.Current.Hanlde);
}
else
{
handle = WindowsNative.FindFirstFile(searchPattern, out findData);
}
if (handle.IsInvalid)
{
int errorCode = Marshal.GetLastWin32Error();
if (errorCode != WindowsNative.ERROR_FILE_NOT_FOUND)
{
WindowsNative.HandleWindowsError(errorCode);
}
return(null);
}
return(handle);
}
private static IEnumerable <string> EnumerateFileSystemIterator(
LongPath path, string mask, bool enumerateDirectories, bool enumerateFiles)
{
if (string.IsNullOrEmpty(mask) || mask == ".")
{
mask = "*";
}
string unprefixedPath = path.UnPrefixedPathString;
WindowsNative.WIN32_FIND_DATA findData;
using (FindFileHandle handle = BeginFind(Path.Combine(path.PathString, mask), out findData))
{
if (handle == null)
{
yield break;
}
do
{
string fileName = findData.cFileName;
if (IsDirectory(findData.dwFileAttributes))
{
if (enumerateDirectories && IsRealFolder(fileName))
{
yield return(Path.Combine(unprefixedPath, fileName));
}
}
else
{
if (enumerateFiles)
{
yield return(Path.Combine(unprefixedPath, fileName));
}
}
} while (WindowsNative.FindNextFile(handle, out findData));
int errorCode = Marshal.GetLastWin32Error();
if (errorCode != WindowsNative.ERROR_NO_MORE_FILES)
{
WindowsNative.HandleWindowsError(errorCode);
}
}
}
internal static extern bool FindNextFile(FindFileHandle findFileHandle, out WIN32_FIND_DATA findFileData);