| /* |
| * Copyright (C) 2016, Christian Halstrick <christian.halstrick@sap.com> |
| * 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; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| |
| import org.eclipse.jgit.attributes.FilterCommand; |
| import org.eclipse.jgit.attributes.FilterCommandFactory; |
| import org.eclipse.jgit.attributes.FilterCommandRegistry; |
| import org.eclipse.jgit.lfs.lib.Constants; |
| import org.eclipse.jgit.lib.Repository; |
| |
| /** |
| * Built-in LFS smudge filter |
| * |
| * When content is read from git's object-database and written to the filesystem |
| * and this filter is configured for that content, then this filter will replace |
| * the content of LFS pointer files with the original content. This happens e.g. |
| * when a checkout needs to update a working tree file which is under LFS |
| * control. This implementation expects that the origin content is already |
| * available in the .git/lfs/objects folder. This implementation will not |
| * contact any LFS servers in order to get the missing content. |
| * |
| * @since 4.6 |
| */ |
| public class SmudgeFilter extends FilterCommand { |
| /** |
| * The factory is responsible for creating instances of {@link SmudgeFilter} |
| */ |
| public final static FilterCommandFactory FACTORY = new FilterCommandFactory() { |
| @Override |
| public FilterCommand create(Repository db, InputStream in, |
| OutputStream out) throws IOException { |
| return new SmudgeFilter(db, in, out); |
| } |
| }; |
| |
| /** |
| * Registers this filter in JGit by calling |
| */ |
| public final static void register() { |
| FilterCommandRegistry.register( |
| org.eclipse.jgit.lib.Constants.BUILTIN_FILTER_PREFIX |
| + "lfs/smudge", //$NON-NLS-1$ |
| FACTORY); |
| } |
| |
| private Lfs lfs; |
| |
| /** |
| * @param db |
| * @param in |
| * @param out |
| * @throws IOException |
| */ |
| public SmudgeFilter(Repository db, InputStream in, OutputStream out) |
| throws IOException { |
| super(in, out); |
| lfs = new Lfs(db.getDirectory().toPath().resolve(Constants.LFS)); |
| LfsPointer res = LfsPointer.parseLfsPointer(in); |
| if (res != null) { |
| Path mediaFile = lfs.getMediaFile(res.getOid()); |
| if (Files.exists(mediaFile)) { |
| this.in = Files.newInputStream(mediaFile); |
| } |
| } |
| } |
| |
| @Override |
| public int run() throws IOException { |
| int b; |
| if (in != null) { |
| while ((b = in.read()) != -1) { |
| out.write(b); |
| } |
| in.close(); |
| } |
| out.close(); |
| return -1; |
| } |
| } |