Merge "Add DiffCommand to JGit API"
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commit
100e9429b5
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/*
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* Copyright (C) 2011, Tomasz Zarna <Tomasz.Zarna@pl.ibm.com>
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.api;
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import static org.junit.Assert.assertEquals;
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import java.io.File;
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import java.util.List;
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import org.eclipse.jgit.diff.DiffEntry;
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import org.eclipse.jgit.diff.DiffEntry.ChangeType;
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import org.eclipse.jgit.lib.RepositoryTestCase;
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import org.junit.Test;
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public class DiffCommandTest extends RepositoryTestCase {
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@Test
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public void testDiffModified() throws Exception {
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write(new File(db.getDirectory().getParent(), "test.txt"), "test");
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File folder = new File(db.getDirectory().getParent(), "folder");
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folder.mkdir();
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write(new File(folder, "folder.txt"), "folder");
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Git git = new Git(db);
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git.add().addFilepattern(".").call();
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git.commit().setMessage("Initial commit").call();
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write(new File(folder, "folder.txt"), "folder change");
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List<DiffEntry> entries = git.diff().call();
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assertEquals(1, entries.size());
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assertEquals(ChangeType.MODIFY, entries.get(0)
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.getChangeType());
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assertEquals("folder/folder.txt", entries.get(0)
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.getOldPath());
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assertEquals("folder/folder.txt", entries.get(0)
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.getNewPath());
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}
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@Test
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public void testDiffCached() throws Exception {
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write(new File(db.getDirectory().getParent(), "test.txt"), "test");
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File folder = new File(db.getDirectory().getParent(), "folder");
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folder.mkdir();
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Git git = new Git(db);
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git.add().addFilepattern(".").call();
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git.commit().setMessage("Initial commit").call();
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write(new File(folder, "folder.txt"), "folder");
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git.add().addFilepattern(".").call();
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List<DiffEntry> entries = git.diff().setCached(true).call();
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assertEquals(1, entries.size());
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assertEquals(ChangeType.ADD, entries.get(0)
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.getChangeType());
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assertEquals("/dev/null", entries.get(0)
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.getOldPath());
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assertEquals("folder/folder.txt", entries.get(0)
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.getNewPath());
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}
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}
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@ -0,0 +1,189 @@
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/*
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* Copyright (C) 2011, Tomasz Zarna <Tomasz.Zarna@pl.ibm.com>
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.api;
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import static org.eclipse.jgit.lib.Constants.HEAD;
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import java.io.IOException;
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import java.util.List;
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import org.eclipse.jgit.JGitText;
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import org.eclipse.jgit.api.errors.GitAPIException;
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import org.eclipse.jgit.api.errors.NoHeadException;
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import org.eclipse.jgit.diff.DiffEntry;
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import org.eclipse.jgit.diff.DiffFormatter;
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import org.eclipse.jgit.dircache.DirCacheIterator;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.ObjectReader;
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import org.eclipse.jgit.lib.Repository;
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import org.eclipse.jgit.treewalk.AbstractTreeIterator;
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import org.eclipse.jgit.treewalk.CanonicalTreeParser;
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import org.eclipse.jgit.treewalk.FileTreeIterator;
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import org.eclipse.jgit.treewalk.filter.TreeFilter;
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/**
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* Show changes between commits, commit and working tree, etc.
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*
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* @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-diff.html"
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* >Git documentation about diff</a>
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*/
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public class DiffCommand extends GitCommand<List<DiffEntry>> {
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private AbstractTreeIterator oldTree;
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private AbstractTreeIterator newTree;
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private boolean cached;
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private TreeFilter pathFilter = TreeFilter.ALL;
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// TODO: fixed to true for now
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private boolean showNameAndStatusOnly = true;
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/**
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* @param repo
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*/
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protected DiffCommand(Repository repo) {
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super(repo);
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}
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/**
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* Executes the {@code Diff} command with all the options and parameters
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* collected by the setter methods (e.g. {@link #setCached(boolean)} of this
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* class. Each instance of this class should only be used for one invocation
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* of the command. Don't call this method twice on an instance.
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*
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* @return a DiffEntry for each path which is different
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*/
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public List<DiffEntry> call() throws GitAPIException, IOException {
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final DiffFormatter diffFmt = new DiffFormatter(null);
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diffFmt.setRepository(repo);
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try {
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if (cached) {
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if (oldTree == null) {
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ObjectId head = repo.resolve(HEAD + "^{tree}");
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if (head == null)
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throw new NoHeadException(JGitText.get().cannotReadTree);
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CanonicalTreeParser p = new CanonicalTreeParser();
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ObjectReader reader = repo.newObjectReader();
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try {
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p.reset(reader, head);
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} finally {
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reader.release();
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}
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oldTree = p;
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}
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newTree = new DirCacheIterator(repo.readDirCache());
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} else {
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if (oldTree == null)
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oldTree = new DirCacheIterator(repo.readDirCache());
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if (newTree == null)
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newTree = new FileTreeIterator(repo);
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}
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diffFmt.setPathFilter(pathFilter);
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if (showNameAndStatusOnly) {
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return diffFmt.scan(oldTree, newTree);
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} else {
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// TODO: not implemented yet
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throw new UnsupportedOperationException();
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}
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} finally {
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diffFmt.release();
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}
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}
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/**
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*
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* @param cached
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* whether to view the changes you staged for the next commit
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* @return this instance
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*/
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public DiffCommand setCached(boolean cached) {
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this.cached = cached;
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return this;
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}
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/**
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* @param pathFilter
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* parameter, used to limit the diff to the named path
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* @return this instance
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*/
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public DiffCommand setPathFilter(TreeFilter pathFilter) {
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this.pathFilter = pathFilter;
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return this;
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}
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/**
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* @param oldTree
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* the previous state
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* @return this instance
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*/
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public DiffCommand setOldTree(AbstractTreeIterator oldTree) {
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this.oldTree = oldTree;
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return this;
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}
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/**
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* @param newTree
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* the updated state
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* @return this instance
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*/
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public DiffCommand setNewTree(AbstractTreeIterator newTree) {
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this.newTree = newTree;
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return this;
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}
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/**
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* @param showNameAndStatusOnly
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* whether to return only names and status of changed files
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* @return this instance
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*/
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public DiffCommand setShowNameAndStatusOnly(boolean showNameAndStatusOnly) {
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// TODO: not implemented yet
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if (!showNameAndStatusOnly)
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throw new UnsupportedOperationException();
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this.showNameAndStatusOnly = showNameAndStatusOnly;
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return this;
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}
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}
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@ -481,6 +481,19 @@ public ReflogCommand reflog() {
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return new ReflogCommand(repo);
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}
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/**
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* Returns a command object to execute a {@code diff} command
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*
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* @see <a
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* href="http://www.kernel.org/pub/software/scm/git/docs/git-diff.html"
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* >Git documentation about diff</a>
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* @return a {@link DiffCommand} used to collect all optional parameters and
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* to finally execute the {@code diff} command
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*/
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public DiffCommand diff() {
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return new DiffCommand(repo);
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}
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/**
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* @return the git repository this class is interacting with
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*/
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