//Code based heavily on https://stackoverflow.com/q/47471744
static bool FindNextFilePInvokeRecursive(string path, out List <FileInformation> files, out List <DirectoryInformation> directories, Log.Logger logger)
{
List <FileInformation> fileList = new List <FileInformation>();
List <DirectoryInformation> directoryList = new List <DirectoryInformation>();
IntPtr findHandle = INVALID_HANDLE_VALUE;
List <Tuple <string, DateTime> > info = new List <Tuple <string, DateTime> >();
try
{
findHandle = FindFirstFileW(path + @"\*", out WIN32_FIND_DATAW findData);
if (findHandle != INVALID_HANDLE_VALUE)
{
do
{
if (findData.cFileName != "." && findData.cFileName != "..")
{
string fullPath = path + @"\" + findData.cFileName;
if (findData.dwFileAttributes.HasFlag(FileAttributes.Directory) && !findData.dwFileAttributes.HasFlag(FileAttributes.ReparsePoint))
{
var dirdata = new DirectoryInformation {
FullPath = fullPath, LastWriteTime = findData.ftLastWriteTime.ToDateTime()
};
directoryList.Add(dirdata);
List <FileInformation> subDirectoryFileList = new List <FileInformation>();
List <DirectoryInformation> subDirectoryDirectoryList = new List <DirectoryInformation>();
if (FindNextFilePInvokeRecursive(fullPath, out subDirectoryFileList, out subDirectoryDirectoryList, logger))
{
fileList.AddRange(subDirectoryFileList);
directoryList.AddRange(subDirectoryDirectoryList);
}
}
else if (!findData.dwFileAttributes.HasFlag(FileAttributes.Directory))
{
var filedata = new FileInformation {
FullPath = fullPath, LastWriteTime = findData.ftLastWriteTime.ToDateTime(), Size = (long)findData.nFileSizeLow + (long)findData.nFileSizeHigh * 4294967296
};
fileList.Add(filedata);
}
}
} while (FindNextFile(findHandle, out findData));
}
}
catch (Exception exception)
{
Console.WriteLine(exception.ToString());
if (findHandle != INVALID_HANDLE_VALUE)
{
FindClose(findHandle);
}
files = null;
directories = null;
return(false);
}
if (findHandle != INVALID_HANDLE_VALUE)
{
FindClose(findHandle);
}
files = fileList;
directories = directoryList;
return(true);
}
static bool FindNextFilePInvokeRecursiveParalleled(string path, out List <FileInformation> files, out List <DirectoryInformation> directories, Log.Logger logger)
{
List <FileInformation> fileList = new List <FileInformation>();
object fileListLock = new object();
List <DirectoryInformation> directoryList = new List <DirectoryInformation>();
object directoryListLock = new object();
IntPtr findHandle = INVALID_HANDLE_VALUE;
List <Tuple <string, DateTime> > info = new List <Tuple <string, DateTime> >();
try
{
path = path.EndsWith(@"\") ? path : path + @"\";
findHandle = FindFirstFileW(path + @"*", out WIN32_FIND_DATAW findData);
if (findHandle != INVALID_HANDLE_VALUE)
{
do
{
if (findData.cFileName != "." && findData.cFileName != "..")
{
string fullPath = path + findData.cFileName;
if (findData.dwFileAttributes.HasFlag(FileAttributes.Directory) && !findData.dwFileAttributes.HasFlag(FileAttributes.ReparsePoint))
{
var dirdata = new DirectoryInformation {
FullPath = fullPath, LastWriteTime = findData.ftLastWriteTime.ToDateTime()
};
directoryList.Add(dirdata);
}
else if (!findData.dwFileAttributes.HasFlag(FileAttributes.Directory))
{
var filedata = new FileInformation {
FullPath = fullPath, LastWriteTime = findData.ftLastWriteTime.ToDateTime()
};
fileList.Add(filedata);
}
}
} while (FindNextFile(findHandle, out findData));
directoryList.AsParallel().ForAll(x =>
{
List <FileInformation> subDirectoryFileList = new List <FileInformation>();
List <DirectoryInformation> subDirectoryDirectoryList = new List <DirectoryInformation>();
if (FindNextFilePInvokeRecursive(x.FullPath, out subDirectoryFileList, out subDirectoryDirectoryList, logger))
{
lock (fileListLock)
{
fileList.AddRange(subDirectoryFileList);
}
lock (directoryListLock)
{
directoryList.AddRange(subDirectoryDirectoryList);
}
}
});
}
}
catch (Exception exception)
{
Console.WriteLine(exception.ToString());
if (findHandle != INVALID_HANDLE_VALUE)
{
FindClose(findHandle);
}
files = null;
directories = null;
return(false);
}
if (findHandle != INVALID_HANDLE_VALUE)
{
FindClose(findHandle);
}
files = fileList;
directories = directoryList;
return(true);
}
