| /* |
| * Copyright (C) 2015, 2017, Dariusz Luksza <dariusz@luksza.org> |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.lfs.lib; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lfs.LfsPointer; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.lib.ObjectStream; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| import org.eclipse.jgit.treewalk.filter.TreeFilter; |
| |
| /** |
| * Detects Large File pointers, as described in [1] in Git repository. |
| * |
| * [1] https://github.com/github/git-lfs/blob/master/docs/spec.md |
| * |
| * @since 4.7 |
| */ |
| public class LfsPointerFilter extends TreeFilter { |
| |
| private LfsPointer pointer; |
| |
| /** |
| * Get the field <code>pointer</code>. |
| * |
| * @return {@link org.eclipse.jgit.lfs.LfsPointer} or {@code null} |
| */ |
| public LfsPointer getPointer() { |
| return pointer; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean include(TreeWalk walk) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| pointer = null; |
| if (walk.isSubtree()) { |
| return walk.isRecursive(); |
| } |
| ObjectId objectId = walk.getObjectId(0); |
| ObjectLoader object = walk.getObjectReader().open(objectId); |
| if (object.getSize() > 1024) { |
| return false; |
| } |
| |
| try (ObjectStream stream = object.openStream()) { |
| pointer = LfsPointer.parseLfsPointer(stream); |
| return pointer != null; |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean shouldBeRecursive() { |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public TreeFilter clone() { |
| return new LfsPointerFilter(); |
| } |
| } |