@NotNull
public static String getLineSeparator(@NotNull Document document, @NotNull VirtualFile file) {
String lineSeparator = LoadTextUtil.getDetectedLineSeparator(file);
if (lineSeparator == null) {
lineSeparator = document.getUserData(LINE_SEPARATOR_KEY);
assert lineSeparator != null : document;
}
return lineSeparator;
}
@Override
@NotNull
public String getLineSeparator(@Nullable VirtualFile file, @Nullable Project project) {
String lineSeparator = file == null ? null : LoadTextUtil.getDetectedLineSeparator(file);
if (lineSeparator == null) {
CodeStyleFacade settingsManager =
project == null ? CodeStyleFacade.getInstance() : CodeStyleFacade.getInstance(project);
lineSeparator = settingsManager.getLineSeparator();
}
return lineSeparator;
}
@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);
}
private void doSaveDocumentInWriteAction(@NotNull Document document, @NotNull VirtualFile file)
throws IOException {
if (!file.isValid()) {
removeFromUnsaved(document);
return;
}
if (!file.equals(getFile(document))) {
registerDocument(document, file);
}
if (!isSaveNeeded(document, file)) {
if (document instanceof DocumentEx) {
((DocumentEx) document).setModificationStamp(file.getModificationStamp());
}
removeFromUnsaved(document);
updateModifiedProperty(file);
return;
}
myMultiCaster.beforeDocumentSaving(document);
LOG.assertTrue(file.isValid());
String text = document.getText();
String lineSeparator = getLineSeparator(document, file);
if (!lineSeparator.equals("\n")) {
text = StringUtil.convertLineSeparators(text, lineSeparator);
}
Project project = ProjectLocator.getInstance().guessProjectForFile(file);
LoadTextUtil.write(project, file, this, text, document.getModificationStamp());
myUnsavedDocuments.remove(document);
LOG.assertTrue(!myUnsavedDocuments.contains(document));
myTrailingSpacesStripper.clearLineModificationFlags(document);
}