| /* |
| * Copyright (C) 2010, Google Inc. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.internal.storage.file; |
| |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.zip.InflaterInputStream; |
| |
| import org.eclipse.jgit.errors.LargeObjectException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.lib.ObjectStream; |
| |
| class LargePackedWholeObject extends ObjectLoader { |
| private final int type; |
| |
| private final long size; |
| |
| private final long objectOffset; |
| |
| private final int headerLength; |
| |
| private final PackFile pack; |
| |
| private final FileObjectDatabase db; |
| |
| LargePackedWholeObject(int type, long size, long objectOffset, |
| int headerLength, PackFile pack, FileObjectDatabase db) { |
| this.type = type; |
| this.size = size; |
| this.objectOffset = objectOffset; |
| this.headerLength = headerLength; |
| this.pack = pack; |
| this.db = db; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int getType() { |
| return type; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public long getSize() { |
| return size; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean isLarge() { |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public byte[] getCachedBytes() throws LargeObjectException { |
| try { |
| throw new LargeObjectException(getObjectId()); |
| } catch (IOException cannotObtainId) { |
| throw new LargeObjectException(cannotObtainId); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public ObjectStream openStream() throws MissingObjectException, IOException { |
| WindowCursor wc = new WindowCursor(db); |
| InputStream in; |
| try { |
| in = new PackInputStream(pack, objectOffset + headerLength, wc); |
| } catch (IOException packGone) { |
| // If the pack file cannot be pinned into the cursor, it |
| // probably was repacked recently. Go find the object |
| // again and open the stream from that location instead. |
| // |
| return wc.open(getObjectId(), type).openStream(); |
| } |
| |
| in = new BufferedInputStream( // |
| new InflaterInputStream( // |
| in, // |
| wc.inflater(), // |
| 8192), // |
| 8192); |
| return new ObjectStream.Filter(type, size, in); |
| } |
| |
| private ObjectId getObjectId() throws IOException { |
| return pack.findObjectForOffset(objectOffset); |
| } |
| } |