internal static IFileSystemInformation Create(string originalPath, SafeFileHandle fileHandle, FileBasicInformation info, IFileService fileService)
{
if ((info.FileAttributes & FileAttributes.Directory) != 0)
{
return(DirectoryInformation.Create(originalPath, fileHandle, info, fileService));
}
else
{
return(FileInformation.Create(originalPath, fileHandle, info, fileService));
}
}
internal static IFileSystemInformation Create(ref RawFindData findData, IFileService fileService)
{
if ((findData.FileAttributes & FileAttributes.Directory) != 0)
{
return(DirectoryInformation.Create(ref findData, fileService));
}
else
{
return(FileInformation.Create(ref findData, fileService));
}
}
internal static IFileSystemInformation Create(NativeMethods.FileManagement.FindResult findResult, IFileService fileService)
{
if ((findResult.Attributes & System.IO.FileAttributes.Directory) != 0)
{
return(DirectoryInformation.Create(findResult, fileService));
}
else
{
return(FileInformation.Create(findResult, fileService));
}
}
internal static IFileSystemInformation Create(string originalPath, SafeFileHandle fileHandle, NativeMethods.FileManagement.BY_HANDLE_FILE_INFORMATION info, IFileService fileService)
{
if ((info.dwFileAttributes & System.IO.FileAttributes.Directory) != 0)
{
return(DirectoryInformation.Create(originalPath, fileHandle, info, fileService));
}
else
{
return(FileInformation.Create(originalPath, fileHandle, info, fileService));
}
}
internal static IFileSystemInformation Create(string path, System.IO.FileAttributes attributes, IFileService fileService)
{
if (attributes.HasFlag(System.IO.FileAttributes.Directory))
{
return(DirectoryInformation.Create(path, attributes, fileService));
}
else
{
// Should only be using attributes for root directories
throw new InvalidOperationException();
}
}
internal static IEnumerable <IFileSystemInformation> EnumerateChildrenInternal(
string directory,
ChildType childType,
string searchPattern,
System.IO.SearchOption searchOption,
System.IO.FileAttributes excludeAttributes,
IFileService fileService)
{
var firstFile = NativeMethods.FileManagement.FindFirstFile(Paths.Combine(directory, searchPattern));
var findInfo = firstFile;
if (firstFile != null)
{
// Look for specified file/directories
do
{
bool isDirectory = findInfo.Attributes.HasFlag(System.IO.FileAttributes.Directory);
if ((findInfo.Attributes & excludeAttributes) == 0 &&
findInfo.FileName != "." &&
findInfo.FileName != ".." &&
((isDirectory && childType == ChildType.Directory) ||
(!isDirectory && childType == ChildType.File)))
{
yield return(FileSystemInformation.Create(findInfo, fileService));
}
findInfo = NativeMethods.FileManagement.FindNextFile(firstFile);
} while (findInfo != null);
firstFile.FindHandle.Close();
}
if (searchOption != System.IO.SearchOption.AllDirectories)
{
yield break;
}
// Need to recurse to find additional matches
firstFile = NativeMethods.FileManagement.FindFirstFile(Paths.Combine(directory, "*"), directoriesOnly: true);
if (firstFile == null)
{
yield break;
}
findInfo = firstFile;
do
{
if ((findInfo.Attributes & excludeAttributes) == 0 &&
findInfo.Attributes.HasFlag(System.IO.FileAttributes.Directory) &&
findInfo.FileName != "." &&
findInfo.FileName != "..")
{
IFileSystemInformation childDirectory = DirectoryInformation.Create(findInfo, fileService);
foreach (var child in EnumerateChildrenInternal(childDirectory.Path, childType, searchPattern, searchOption, excludeAttributes, fileService))
{
yield return(child);
}
}
findInfo = NativeMethods.FileManagement.FindNextFile(firstFile);
} while (findInfo != null);
firstFile.FindHandle.Close();
}
