@NotNull
private FSRecords.NameId[] persistAllChildren(
@NotNull final VirtualFile file, final int id, @NotNull FSRecords.NameId[] current) {
assert file != mySuperRoot;
final NewVirtualFileSystem fs = replaceWithNativeFS(getDelegate(file));
String[] delegateNames = VfsUtil.filterNames(fs.list(file));
if (delegateNames.length == 0 && current.length > 0) {
return current;
}
Set<String> toAdd = ContainerUtil.newHashSet(delegateNames);
for (FSRecords.NameId nameId : current) {
toAdd.remove(nameId.name);
}
final TIntArrayList childrenIds = new TIntArrayList(current.length + toAdd.size());
final List<FSRecords.NameId> nameIds =
ContainerUtil.newArrayListWithExpectedSize(current.length + toAdd.size());
for (FSRecords.NameId nameId : current) {
childrenIds.add(nameId.id);
nameIds.add(nameId);
}
for (String newName : toAdd) {
FakeVirtualFile child = new FakeVirtualFile(file, newName);
FileAttributes attributes = fs.getAttributes(child);
if (attributes != null) {
int childId = createAndFillRecord(fs, child, id, attributes);
childrenIds.add(childId);
nameIds.add(new FSRecords.NameId(childId, FileNameCache.storeName(newName), newName));
}
}
FSRecords.updateList(id, childrenIds.toNativeArray());
setChildrenCached(id);
return nameIds.toArray(new FSRecords.NameId[nameIds.size()]);
}
public void scan() {
final NewVirtualFile root = (NewVirtualFile) myRefreshRoot;
NewVirtualFileSystem delegate = root.getFileSystem();
if (root.isDirty() && !delegate.exists(root)) {
scheduleDeletion(root);
root.markClean();
} else {
if (delegate.getProtocol().equals(LocalFileSystem.PROTOCOL)
&& root.isDirectory()
&& Registry.is("filesystem.useNative")) {
if (SystemInfo.isWindows && Win32LocalFileSystem.isAvailable()) {
delegate = Win32LocalFileSystem.getWin32Instance();
}
}
final PersistentFS persistence = (PersistentFS) ManagingFS.getInstance();
while (!myRefreshQueue.isEmpty()) {
final VirtualFileSystemEntry file = (VirtualFileSystemEntry) myRefreshQueue.pullFirst();
if (!file.isDirty()) continue;
if (file.isDirectory()) {
VirtualDirectoryImpl dir = (VirtualDirectoryImpl) file;
final boolean fullSync = dir.allChildrenLoaded();
if (fullSync) {
Set<String> currentNames = new HashSet<String>(Arrays.asList(persistence.list(file)));
Set<String> uptodateNames =
new HashSet<String>(Arrays.asList(VfsUtil.filterNames(delegate.list(file))));
Set<String> newNames = new HashSet<String>(uptodateNames);
newNames.removeAll(currentNames);
Set<String> deletedNames = new HashSet<String>(currentNames);
deletedNames.removeAll(uptodateNames);
for (String name : deletedNames) {
scheduleDeletion(file.findChild(name));
}
for (String name : newNames) {
boolean isDirectory = delegate.isDirectory(new FakeVirtualFile(file, name));
scheduleCreation(file, name, isDirectory);
}
for (VirtualFile child : file.getChildren()) {
if (!deletedNames.contains(child.getName())) {
scheduleChildRefresh(file, child, delegate);
}
}
} else {
for (VirtualFile child : file.getCachedChildren()) {
if (delegate.exists(child)) {
scheduleChildRefresh(file, child, delegate);
} else {
scheduleDeletion(child);
}
}
final List<String> names = dir.getSuspiciousNames();
for (String name : names) {
if (name.length() == 0) continue;
final VirtualFile fake = new FakeVirtualFile(file, name);
if (delegate.exists(fake)) {
scheduleCreation(file, name, delegate.isDirectory(fake));
}
}
}
} else {
long currentTimestamp = persistence.getTimeStamp(file);
long updtodateTimestamp = delegate.getTimeStamp(file);
if (currentTimestamp != updtodateTimestamp) {
scheduleUpdateContent(file);
}
}
boolean currentWritable = persistence.isWritable(file);
boolean uptodateWritable = delegate.isWritable(file);
if (currentWritable != uptodateWritable) {
scheduleWritableAttributeChange(file, currentWritable, uptodateWritable);
}
file.markClean();
}
}
}