@Override
@Nullable
public Document getDocument(@NotNull final VirtualFile file) {
DocumentEx document = (DocumentEx) getCachedDocument(file);
if (document == null) {
if (file.isDirectory()
|| isBinaryWithoutDecompiler(file)
|| SingleRootFileViewProvider.isTooLargeForContentLoading(file)) {
return null;
}
final CharSequence text = LoadTextUtil.loadText(file);
synchronized (lock) {
document = (DocumentEx) getCachedDocument(file);
if (document != null) return document; // Double checking
document = (DocumentEx) createDocument(text);
document.setModificationStamp(file.getModificationStamp());
final FileType fileType = file.getFileType();
document.setReadOnly(!file.isWritable() || fileType.isBinary());
file.putUserData(DOCUMENT_KEY, new WeakReference<Document>(document));
document.putUserData(FILE_KEY, file);
if (!(file instanceof LightVirtualFile
|| file.getFileSystem() instanceof DummyFileSystem)) {
document.addDocumentListener(
new DocumentAdapter() {
@Override
public void documentChanged(DocumentEvent e) {
final Document document = e.getDocument();
myUnsavedDocuments.add(document);
final Runnable currentCommand =
CommandProcessor.getInstance().getCurrentCommand();
Project project =
currentCommand == null
? null
: CommandProcessor.getInstance().getCurrentCommandProject();
String lineSeparator = CodeStyleFacade.getInstance(project).getLineSeparator();
document.putUserData(LINE_SEPARATOR_KEY, lineSeparator);
// avoid documents piling up during batch processing
if (areTooManyDocumentsInTheQueue(myUnsavedDocuments)) {
saveAllDocumentsLater();
}
}
});
}
}
myMultiCaster.fileContentLoaded(file, document);
}
return document;
}
private static boolean isSaveNeeded(@NotNull Document document, @NotNull VirtualFile file)
throws IOException {
if (file.getFileType().isBinary()
|| document.getTextLength() > 1000 * 1000) { // don't compare if the file is too big
return true;
}
byte[] bytes = file.contentsToByteArray();
CharSequence loaded = LoadTextUtil.getTextByBinaryPresentation(bytes, file, false, false);
return !Comparing.equal(document.getCharsSequence(), loaded);
}
@Override
public boolean requestWriting(@NotNull Document document, Project project) {
final VirtualFile file = getInstance().getFile(document);
if (project != null && file != null && file.isValid()) {
return !file.getFileType().isBinary()
&& ReadonlyStatusHandler.ensureFilesWritable(project, file);
}
if (document.isWritable()) {
return true;
}
document.fireReadOnlyModificationAttempt();
return false;
}
// returns number of hits
static int processUsagesInFile(
@NotNull final PsiFile psiFile,
@NotNull final FindModel findModel,
@NotNull final Processor<UsageInfo> consumer) {
if (findModel.getStringToFind().isEmpty()) {
if (!ApplicationManager.getApplication()
.runReadAction((Computable<Boolean>) () -> consumer.process(new UsageInfo(psiFile)))) {
throw new ProcessCanceledException();
}
return 1;
}
final VirtualFile virtualFile = psiFile.getVirtualFile();
if (virtualFile == null) return 0;
if (virtualFile.getFileType().isBinary()) return 0; // do not decompile .class files
final Document document =
ApplicationManager.getApplication()
.runReadAction(
(Computable<Document>)
() ->
virtualFile.isValid()
? FileDocumentManager.getInstance().getDocument(virtualFile)
: null);
if (document == null) return 0;
final int[] offset = {0};
int count = 0;
int found;
ProgressIndicator indicator =
ProgressWrapper.unwrap(ProgressManager.getInstance().getProgressIndicator());
TooManyUsagesStatus tooManyUsagesStatus = TooManyUsagesStatus.getFrom(indicator);
do {
tooManyUsagesStatus.pauseProcessingIfTooManyUsages(); // wait for user out of read action
found =
ApplicationManager.getApplication()
.runReadAction(
(Computable<Integer>)
() -> {
if (!psiFile.isValid()) return 0;
return addToUsages(
document, consumer, findModel, psiFile, offset, USAGES_PER_READ_ACTION);
});
count += found;
} while (found != 0);
return count;
}
private static boolean isBinaryWithoutDecompiler(VirtualFile file) {
final FileType ft = file.getFileType();
return ft.isBinary() && BinaryFileTypeDecompilers.INSTANCE.forFileType(ft) == null;
}