internal static extern Boolean FindNextFile(SafeFindFileHandle hFindFile, out WIN32_FIND_DATA lpFindFileData);
/// <summary>
/// The main method that does the recursive file matching.
/// </summary>
/// <param name="directory">
/// The file directory to search.
/// </param>
/// <remarks>
/// This method calls the low level Windows API because the built in .NET APIs do not
/// support long file names. (Those greater than 260 characters).
/// </remarks>
static private void RecurseFiles(String directory)
{
String lookUpdirectory = String.Empty;
if (directory.StartsWith(@"\\", StringComparison.OrdinalIgnoreCase))
{
lookUpdirectory += directory.Replace(@"\\", @"\\?\UNC\") + "\\*";
}
else
{
lookUpdirectory = "\\\\?\\" + directory + "\\*";
}
NativeMethods.WIN32_FIND_DATA w32FindData;
using (SafeFindFileHandle fileHandle = NativeMethods.FindFirstFileEx(lookUpdirectory,
NativeMethods.FINDEX_INFO_LEVELS.Basic,
out w32FindData,
NativeMethods.FINDEX_SEARCH_OPS.SearchNameMatch,
IntPtr.Zero,
NativeMethods.FindExAdditionalFlags.LargeFetch))
{
if (!fileHandle.IsInvalid)
{
do
{
// Does this match "." or ".."? If so get out.
if ((w32FindData.cFileName.Equals(".", StringComparison.OrdinalIgnoreCase) ||
(w32FindData.cFileName.Equals("..", StringComparison.OrdinalIgnoreCase))))
{
continue;
}
// Is this a directory? If so, queue up another task.
if ((w32FindData.dwFileAttributes & FileAttributes.Directory) == FileAttributes.Directory)
{
Interlocked.Increment(ref totalDirectories);
String subDirectory = Path.Combine(directory, w32FindData.cFileName);
if (Options.IncludeDirectories)
{
if (IsNameMatch(subDirectory))
{
Interlocked.Increment(ref totalMatches);
QueueConsoleWriteLine(subDirectory);
}
}
// Recurse our way to happiness....
Task.Factory.StartNew(() => RecurseFiles(subDirectory), TaskCreationOptions.AttachedToParent);
}
else
{
// It's a file so look at it.
Interlocked.Increment(ref totalFiles);
Int64 fileSize = w32FindData.nFileSizeLow + ((Int64)w32FindData.nFileSizeHigh << 32);
Interlocked.Add(ref totalSize, fileSize);
String fullFile = directory;
if (!directory.EndsWith("\\", StringComparison.OrdinalIgnoreCase))
{
fullFile += "\\";
}
fullFile += w32FindData.cFileName;
String matchName = fullFile;
if (false == Options.IncludeDirectories)
{
matchName = w32FindData.cFileName;
}
if (IsNameMatch(matchName))
{
Interlocked.Increment(ref totalMatches);
Interlocked.Add(ref totalMatchesSize, fileSize);
QueueConsoleWriteLine(fullFile);
}
}
} while (NativeMethods.FindNextFile(fileHandle, out w32FindData));
}
}
}
internal static extern Boolean FindNextFile(SafeFindFileHandle hFindFile, out WIN32_FIND_DATA lpFindFileData);