private static IEnumerable <string> GetFolderPlaceholdersFromDisk(ITracer tracer, PhysicalFileSystem fileSystem, string path)
{
if (!fileSystem.IsSymLink(path))
{
foreach (string directory in fileSystem.EnumerateDirectories(path))
{
if (!directory.EndsWith(Path.DirectorySeparatorChar + GVFSConstants.DotGit.Root))
{
OnDiskFileState fileState = OnDiskFileState.Full;
if (Utils.TryGetOnDiskFileState(directory, out fileState))
{
if (IsPlaceholder(fileState))
{
yield return(directory);
}
// Recurse into placeholders and full folders skipping the tombstones
if (!IsTombstone(fileState))
{
foreach (string placeholderPath in GetFolderPlaceholdersFromDisk(tracer, fileSystem, directory))
{
yield return(placeholderPath);
}
}
}
else
{
// May cause valid folder placeholders not to be written
// to the placeholder database so we want to error out.
throw new InvalidDataException($"Error getting on disk file state for {directory}");
}
}
}
}
}
private static IEnumerable <string> GetFolderPlaceholdersFromDisk(ITracer tracer, PhysicalFileSystem fileSystem, string path)
{
foreach (string directory in fileSystem.EnumerateDirectories(path))
{
if (!directory.EndsWith(GVFSConstants.PathSeparatorString + GVFSConstants.DotGit.Root))
{
OnDiskFileState fileState = OnDiskFileState.Full;
HResult result = Utils.GetOnDiskFileState(directory, ref fileState);
if (result == HResult.Ok)
{
if (IsPlaceholder(fileState))
{
yield return(directory);
}
// Recurse into placeholders and full folders skipping the tombstones
if (!IsTombstone(fileState))
{
foreach (string placeholderPath in GetFolderPlaceholdersFromDisk(tracer, fileSystem, directory))
{
yield return(placeholderPath);
}
}
}
else if (result != HResult.FileNotFound)
{
// FileNotFound is returned for tombstones when the filter is attached to the volume so we want to
// just skip those folders. Any other HResults may cause valid folder placeholders not to be written
// to the placeholder database so we want to error out on those.
throw new InvalidDataException($"Error getting on disk file state. HResult = {result} for {directory}");
}
}
}
}
private static bool IsPlaceholder(OnDiskFileState fileState)
{
return((fileState & (OnDiskFileState.DirtyPlaceholder | OnDiskFileState.HydratedPlaceholder | OnDiskFileState.Placeholder)) != 0);
}
private static bool IsTombstone(OnDiskFileState fileState)
{
return((fileState & OnDiskFileState.Tombstone) != 0);
}
