@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file, boolean cacheContent) throws IOException { InputStream contentStream = null; boolean reloadFromDelegate; boolean outdated; int fileId; synchronized (myInputLock) { fileId = getFileId(file); outdated = checkFlag(fileId, MUST_RELOAD_CONTENT) || FSRecords.getLength(fileId) == -1L; reloadFromDelegate = outdated || (contentStream = readContent(file)) == null; } if (reloadFromDelegate) { final NewVirtualFileSystem delegate = getDelegate(file); final byte[] content; if (outdated) { // in this case, file can have out-of-date length.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); } } }
@Override public long getLength(@NotNull final VirtualFile file) { long len; if (mustReloadContent(file)) { len = reloadLengthFromDelegate(file, getDelegate(file)); } else { final int id = getFileId(file); len = FSRecords.getLength(id); } return len; }
private static boolean mustReloadContent(@NotNull VirtualFile file) { int fileId = getFileId(file); return checkFlag(fileId, MUST_RELOAD_CONTENT) || FSRecords.getLength(fileId) == -1L; }