public void testHardLinks() throws Exception {
if (!SystemInfo.isWindows && !SystemInfo.isUnix) {
System.err.println(getName() + " skipped: " + SystemInfo.OS_NAME);
return;
}
final boolean safeWrite = GeneralSettings.getInstance().isUseSafeWrite();
final File dir = FileUtil.createTempDirectory("hardlinks.", ".dir", false);
final SafeWriteRequestor requestor = new SafeWriteRequestor() {};
try {
GeneralSettings.getInstance().setUseSafeWrite(false);
final File targetFile = new File(dir, "targetFile");
assertTrue(targetFile.createNewFile());
final File hardLinkFile =
IoTestUtil.createHardLink(targetFile.getAbsolutePath(), "hardLinkFile");
final VirtualFile file = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(targetFile);
assertNotNull(file);
file.setBinaryContent("hello".getBytes("UTF-8"), 0, 0, requestor);
assertTrue(file.getLength() > 0);
final VirtualFile check =
LocalFileSystem.getInstance().refreshAndFindFileByIoFile(hardLinkFile);
assertNotNull(check);
assertEquals(file.getLength(), check.getLength());
assertEquals("hello", VfsUtilCore.loadText(check));
} finally {
GeneralSettings.getInstance().setUseSafeWrite(safeWrite);
FileUtil.delete(dir);
}
}
public void testFileLength() throws Exception {
File file = FileUtil.createTempFile("test", "txt");
FileUtil.writeToFile(file, "hello");
VirtualFile virtualFile = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(file);
assertNotNull(virtualFile);
String s = VfsUtilCore.loadText(virtualFile);
assertEquals("hello", s);
assertEquals(5, virtualFile.getLength());
FileUtil.writeToFile(file, "new content");
((PersistentFSImpl) PersistentFS.getInstance()).cleanPersistedContents();
s = VfsUtilCore.loadText(virtualFile);
assertEquals("new content", s);
assertEquals(11, virtualFile.getLength());
}
@Override
@NotNull
public byte[] contentsToByteArray(@NotNull final VirtualFile file, boolean cacheContent)
throws IOException {
InputStream contentStream = null;
boolean reloadFromDelegate;
boolean outdated;
int fileId;
synchronized (myInputLock) {
fileId = getFileId(file);
outdated = checkFlag(fileId, MUST_RELOAD_CONTENT) || FSRecords.getLength(fileId) == -1L;
reloadFromDelegate = outdated || (contentStream = readContent(file)) == null;
}
if (reloadFromDelegate) {
final NewVirtualFileSystem delegate = getDelegate(file);
final byte[] content;
if (outdated) {
// in this case, file can have out-of-date length. so, update it first (it's needed for
// correct contentsToByteArray() work)
// see IDEA-90813 for possible bugs
FSRecords.setLength(fileId, delegate.getLength(file));
content = delegate.contentsToByteArray(file);
} else {
// a bit of optimization
content = delegate.contentsToByteArray(file);
FSRecords.setLength(fileId, content.length);
}
ApplicationEx application = (ApplicationEx) ApplicationManager.getApplication();
// we should cache every local files content
// because the local history feature is currently depends on this cache,
// perforce offline mode as well
if ((!delegate.isReadOnly()
||
// do not cache archive content unless asked
cacheContent && !application.isInternal() && !application.isUnitTestMode())
&& content.length <= PersistentFSConstants.FILE_LENGTH_TO_CACHE_THRESHOLD) {
synchronized (myInputLock) {
writeContent(file, new ByteSequence(content), delegate.isReadOnly());
setFlag(file, MUST_RELOAD_CONTENT, false);
}
}
return content;
} else {
try {
final int length = (int) file.getLength();
assert length >= 0 : file;
return FileUtil.loadBytes(contentStream, length);
} catch (IOException e) {
throw FSRecords.handleError(e);
}
}
}