Merge changes from topic "fix_ui"
* changes: ResolveMerger: do not content-merge gitlinks on del/mod conflicts ResolveMerger: Adding test cases for GITLINK deletion ResolveMerger: choose OURS on gitlink when ignoreConflicts ResolveMerger: improving content merge readability ResolveMerger: extracting createGitLinksMergeResult method ResolveMerger: Adding test cases for GITLINK merge
This commit is contained in:
commit
957419610a
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@ -34,6 +34,7 @@
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import org.eclipse.jgit.dircache.DirCacheCheckout;
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import org.eclipse.jgit.dircache.DirCacheEntry;
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import org.eclipse.jgit.internal.storage.file.FileRepository;
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import org.eclipse.jgit.lib.AnyObjectId;
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import org.eclipse.jgit.lib.Constants;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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@ -512,6 +513,21 @@ protected DirCacheEntry createEntry(final String path, final FileMode mode,
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return entry;
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}
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/**
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* Create <code>DirCacheEntry</code>
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*
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* @param path
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* @param objectId
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* @return the DirCacheEntry
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*/
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protected DirCacheEntry createGitLink(String path, AnyObjectId objectId) {
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final DirCacheEntry entry = new DirCacheEntry(path,
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DirCacheEntry.STAGE_0);
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entry.setFileMode(FileMode.GITLINK);
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entry.setObjectId(objectId);
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return entry;
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}
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/**
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* Assert files are equal
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*
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@ -0,0 +1,368 @@
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/*
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* Copyright (c) 2020, Google LLC and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Distribution License v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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package org.eclipse.jgit.merge;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import java.io.IOException;
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import org.eclipse.jgit.annotations.Nullable;
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import org.eclipse.jgit.dircache.DirCache;
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import org.eclipse.jgit.dircache.DirCacheBuilder;
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import org.eclipse.jgit.dircache.DirCacheEntry;
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import org.eclipse.jgit.lib.CommitBuilder;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.ObjectInserter;
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import org.eclipse.jgit.lib.PersonIdent;
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import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase;
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import org.eclipse.jgit.treewalk.TreeWalk;
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import org.junit.Test;
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public class GitlinkMergeTest extends SampleDataRepositoryTestCase {
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private static final String LINK_ID1 = "DEADBEEFDEADBEEFBABEDEADBEEFDEADBEEFBABE";
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private static final String LINK_ID2 = "DEADDEADDEADDEADDEADDEADDEADDEADDEADDEAD";
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private static final String LINK_ID3 = "BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF";
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private static final String SUBMODULE_PATH = "submodule.link";
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@Test
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public void testGitLinkMerging_AddNew() throws Exception {
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assertGitLinkValue(
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testGitLink(null, null, LINK_ID3, newResolveMerger(), true),
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LINK_ID3);
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}
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@Test
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public void testGitLinkMerging_Delete() throws Exception {
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assertGitLinkDoesntExist(testGitLink(LINK_ID1, LINK_ID1, null,
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newResolveMerger(), true));
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}
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@Test
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public void testGitLinkMerging_UpdateDelete() throws Exception {
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testGitLink(LINK_ID1, LINK_ID2, null, newResolveMerger(), false);
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}
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@Test
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public void testGitLinkMerging_DeleteUpdate() throws Exception {
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testGitLink(LINK_ID1, null, LINK_ID3, newResolveMerger(), false);
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}
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@Test
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public void testGitLinkMerging_UpdateUpdate() throws Exception {
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testGitLink(LINK_ID1, LINK_ID2, LINK_ID3, newResolveMerger(), false);
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}
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@Test
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public void testGitLinkMerging_bothAddedSameLink() throws Exception {
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assertGitLinkValue(
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testGitLink(null, LINK_ID2, LINK_ID2, newResolveMerger(), true),
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LINK_ID2);
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}
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@Test
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public void testGitLinkMerging_bothAddedDifferentLink() throws Exception {
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testGitLink(null, LINK_ID2, LINK_ID3, newResolveMerger(), false);
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}
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@Test
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public void testGitLinkMerging_AddNew_ignoreConflicts() throws Exception {
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assertGitLinkValue(
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testGitLink(null, null, LINK_ID3, newIgnoreConflictMerger(),
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true),
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LINK_ID3);
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}
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@Test
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public void testGitLinkMerging_Delete_ignoreConflicts() throws Exception {
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assertGitLinkDoesntExist(testGitLink(LINK_ID1, LINK_ID1, null,
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newIgnoreConflictMerger(), true));
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}
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@Test
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public void testGitLinkMerging_UpdateDelete_ignoreConflicts()
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throws Exception {
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assertGitLinkValue(testGitLink(LINK_ID1, LINK_ID2, null,
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newIgnoreConflictMerger(), true), LINK_ID2);
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}
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@Test
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public void testGitLinkMerging_DeleteUpdate_ignoreConflicts()
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throws Exception {
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assertGitLinkDoesntExist(testGitLink(LINK_ID1, null, LINK_ID3,
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newIgnoreConflictMerger(), true));
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}
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@Test
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public void testGitLinkMerging_UpdateUpdate_ignoreConflicts()
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throws Exception {
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assertGitLinkValue(testGitLink(LINK_ID1, LINK_ID2, LINK_ID3,
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newIgnoreConflictMerger(), true), LINK_ID2);
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}
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@Test
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public void testGitLinkMerging_bothAddedSameLink_ignoreConflicts()
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throws Exception {
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assertGitLinkValue(testGitLink(null, LINK_ID2, LINK_ID2,
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newIgnoreConflictMerger(), true), LINK_ID2);
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}
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@Test
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public void testGitLinkMerging_bothAddedDifferentLink_ignoreConflicts()
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throws Exception {
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assertGitLinkValue(testGitLink(null, LINK_ID2, LINK_ID3,
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newIgnoreConflictMerger(), true), LINK_ID2);
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}
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protected Merger testGitLink(@Nullable String baseLink,
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@Nullable String oursLink, @Nullable String theirsLink,
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Merger merger, boolean shouldMerge)
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throws Exception {
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DirCache treeB = db.readDirCache();
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DirCache treeO = db.readDirCache();
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DirCache treeT = db.readDirCache();
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DirCacheBuilder bTreeBuilder = treeB.builder();
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DirCacheBuilder oTreeBuilder = treeO.builder();
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DirCacheBuilder tTreeBuilder = treeT.builder();
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maybeAddLink(bTreeBuilder, baseLink);
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maybeAddLink(oTreeBuilder, oursLink);
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maybeAddLink(tTreeBuilder, theirsLink);
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bTreeBuilder.finish();
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oTreeBuilder.finish();
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tTreeBuilder.finish();
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ObjectInserter ow = db.newObjectInserter();
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ObjectId b = commit(ow, treeB, new ObjectId[] {});
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ObjectId o = commit(ow, treeO, new ObjectId[] { b });
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ObjectId t = commit(ow, treeT, new ObjectId[] { b });
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boolean merge = merger.merge(new ObjectId[] { o, t });
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assertEquals(shouldMerge, merge);
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return merger;
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}
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private Merger newResolveMerger() {
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return MergeStrategy.RESOLVE.newMerger(db, true);
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}
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private Merger newIgnoreConflictMerger() {
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return new ResolveMerger(db, true) {
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@Override
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protected boolean mergeImpl() throws IOException {
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// emulate call with ignore conflicts.
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return mergeTrees(mergeBase(), sourceTrees[0], sourceTrees[1],
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true);
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}
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};
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}
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@Test
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public void testGitLinkMerging_blobWithLink() throws Exception {
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DirCache treeB = db.readDirCache();
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DirCache treeO = db.readDirCache();
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DirCache treeT = db.readDirCache();
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DirCacheBuilder bTreeBuilder = treeB.builder();
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DirCacheBuilder oTreeBuilder = treeO.builder();
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DirCacheBuilder tTreeBuilder = treeT.builder();
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bTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob"));
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oTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 2"));
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maybeAddLink(tTreeBuilder, LINK_ID3);
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bTreeBuilder.finish();
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oTreeBuilder.finish();
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tTreeBuilder.finish();
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ObjectInserter ow = db.newObjectInserter();
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ObjectId b = commit(ow, treeB, new ObjectId[] {});
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ObjectId o = commit(ow, treeO, new ObjectId[] { b });
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ObjectId t = commit(ow, treeT, new ObjectId[] { b });
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Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db);
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boolean merge = resolveMerger.merge(new ObjectId[] { o, t });
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assertFalse(merge);
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}
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@Test
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public void testGitLinkMerging_linkWithBlob() throws Exception {
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DirCache treeB = db.readDirCache();
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DirCache treeO = db.readDirCache();
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DirCache treeT = db.readDirCache();
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DirCacheBuilder bTreeBuilder = treeB.builder();
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DirCacheBuilder oTreeBuilder = treeO.builder();
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DirCacheBuilder tTreeBuilder = treeT.builder();
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maybeAddLink(bTreeBuilder, LINK_ID1);
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maybeAddLink(oTreeBuilder, LINK_ID2);
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tTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 3"));
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bTreeBuilder.finish();
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oTreeBuilder.finish();
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tTreeBuilder.finish();
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ObjectInserter ow = db.newObjectInserter();
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ObjectId b = commit(ow, treeB, new ObjectId[] {});
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ObjectId o = commit(ow, treeO, new ObjectId[] { b });
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ObjectId t = commit(ow, treeT, new ObjectId[] { b });
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Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db);
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boolean merge = resolveMerger.merge(new ObjectId[] { o, t });
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assertFalse(merge);
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}
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@Test
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public void testGitLinkMerging_linkWithLink() throws Exception {
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DirCache treeB = db.readDirCache();
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DirCache treeO = db.readDirCache();
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DirCache treeT = db.readDirCache();
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DirCacheBuilder bTreeBuilder = treeB.builder();
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DirCacheBuilder oTreeBuilder = treeO.builder();
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DirCacheBuilder tTreeBuilder = treeT.builder();
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bTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob"));
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maybeAddLink(oTreeBuilder, LINK_ID2);
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maybeAddLink(tTreeBuilder, LINK_ID3);
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bTreeBuilder.finish();
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oTreeBuilder.finish();
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tTreeBuilder.finish();
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ObjectInserter ow = db.newObjectInserter();
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ObjectId b = commit(ow, treeB, new ObjectId[] {});
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ObjectId o = commit(ow, treeO, new ObjectId[] { b });
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ObjectId t = commit(ow, treeT, new ObjectId[] { b });
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Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db);
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boolean merge = resolveMerger.merge(new ObjectId[] { o, t });
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assertFalse(merge);
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}
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@Test
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public void testGitLinkMerging_blobWithBlobFromLink() throws Exception {
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DirCache treeB = db.readDirCache();
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DirCache treeO = db.readDirCache();
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DirCache treeT = db.readDirCache();
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DirCacheBuilder bTreeBuilder = treeB.builder();
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DirCacheBuilder oTreeBuilder = treeO.builder();
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DirCacheBuilder tTreeBuilder = treeT.builder();
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maybeAddLink(bTreeBuilder, LINK_ID1);
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oTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 2"));
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tTreeBuilder.add(
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 3"));
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bTreeBuilder.finish();
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oTreeBuilder.finish();
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tTreeBuilder.finish();
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ObjectInserter ow = db.newObjectInserter();
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ObjectId b = commit(ow, treeB, new ObjectId[] {});
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ObjectId o = commit(ow, treeO, new ObjectId[] { b });
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ObjectId t = commit(ow, treeT, new ObjectId[] { b });
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|
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Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db);
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||||
boolean merge = resolveMerger.merge(new ObjectId[] { o, t });
|
||||
assertFalse(merge);
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}
|
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|
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@Test
|
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public void testGitLinkMerging_linkBlobDeleted() throws Exception {
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// We changed a link to a blob, others has deleted this link.
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DirCache treeB = db.readDirCache();
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||||
DirCache treeO = db.readDirCache();
|
||||
DirCache treeT = db.readDirCache();
|
||||
|
||||
DirCacheBuilder bTreeBuilder = treeB.builder();
|
||||
DirCacheBuilder oTreeBuilder = treeO.builder();
|
||||
DirCacheBuilder tTreeBuilder = treeT.builder();
|
||||
|
||||
maybeAddLink(bTreeBuilder, LINK_ID1);
|
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oTreeBuilder.add(
|
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createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 2"));
|
||||
|
||||
bTreeBuilder.finish();
|
||||
oTreeBuilder.finish();
|
||||
tTreeBuilder.finish();
|
||||
|
||||
ObjectInserter ow = db.newObjectInserter();
|
||||
ObjectId b = commit(ow, treeB, new ObjectId[] {});
|
||||
ObjectId o = commit(ow, treeO, new ObjectId[] { b });
|
||||
ObjectId t = commit(ow, treeT, new ObjectId[] { b });
|
||||
|
||||
Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db);
|
||||
boolean merge = resolveMerger.merge(new ObjectId[] { o, t });
|
||||
assertFalse(merge);
|
||||
}
|
||||
|
||||
private void maybeAddLink(DirCacheBuilder builder,
|
||||
@Nullable String linkId) {
|
||||
if (linkId == null) {
|
||||
return;
|
||||
}
|
||||
DirCacheEntry newLink = createGitLink(SUBMODULE_PATH,
|
||||
ObjectId.fromString(linkId));
|
||||
builder.add(newLink);
|
||||
}
|
||||
|
||||
private void assertGitLinkValue(Merger resolveMerger, String expectedValue)
|
||||
throws Exception {
|
||||
try (TreeWalk tw = new TreeWalk(db)) {
|
||||
tw.setRecursive(true);
|
||||
tw.reset(resolveMerger.getResultTreeId());
|
||||
|
||||
assertTrue(tw.next());
|
||||
assertEquals(SUBMODULE_PATH, tw.getPathString());
|
||||
assertEquals(ObjectId.fromString(expectedValue), tw.getObjectId(0));
|
||||
|
||||
assertFalse(tw.next());
|
||||
}
|
||||
}
|
||||
|
||||
private void assertGitLinkDoesntExist(Merger resolveMerger)
|
||||
throws Exception {
|
||||
try (TreeWalk tw = new TreeWalk(db)) {
|
||||
tw.setRecursive(true);
|
||||
tw.reset(resolveMerger.getResultTreeId());
|
||||
|
||||
assertFalse(tw.next());
|
||||
}
|
||||
}
|
||||
|
||||
private static ObjectId commit(ObjectInserter odi, DirCache treeB,
|
||||
ObjectId[] parentIds) throws Exception {
|
||||
CommitBuilder c = new CommitBuilder();
|
||||
c.setTreeId(treeB.writeTree(odi));
|
||||
c.setAuthor(new PersonIdent("A U Thor", "a.u.thor", 1L, 0));
|
||||
c.setCommitter(c.getAuthor());
|
||||
c.setParentIds(parentIds);
|
||||
c.setMessage("Tree " + c.getTreeId().name());
|
||||
ObjectId id = odi.insert(c);
|
||||
odi.flush();
|
||||
return id;
|
||||
}
|
||||
}
|
|
@ -588,7 +588,8 @@ protected boolean processEntry(CanonicalTreeParser base,
|
|||
final int modeO = tw.getRawMode(T_OURS);
|
||||
final int modeT = tw.getRawMode(T_THEIRS);
|
||||
final int modeB = tw.getRawMode(T_BASE);
|
||||
|
||||
boolean gitLinkMerging = isGitLink(modeO) || isGitLink(modeT)
|
||||
|| isGitLink(modeB);
|
||||
if (modeO == 0 && modeT == 0 && modeB == 0)
|
||||
// File is either untracked or new, staged but uncommitted
|
||||
return true;
|
||||
|
@ -737,31 +738,28 @@ protected boolean processEntry(CanonicalTreeParser base,
|
|||
return false;
|
||||
}
|
||||
|
||||
boolean gitlinkConflict = isGitLink(modeO) || isGitLink(modeT);
|
||||
// Don't attempt to resolve submodule link conflicts
|
||||
if (gitlinkConflict || !attributes.canBeContentMerged()) {
|
||||
if (gitLinkMerging && ignoreConflicts) {
|
||||
// Always select 'ours' in case of GITLINK merge failures so
|
||||
// a caller can use virtual commit.
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_0, EPOCH, 0);
|
||||
return true;
|
||||
} else if (gitLinkMerging) {
|
||||
add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH, 0);
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0);
|
||||
add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0);
|
||||
MergeResult<SubmoduleConflict> result = createGitLinksMergeResult(
|
||||
base, ours, theirs);
|
||||
result.setContainsConflicts(true);
|
||||
mergeResults.put(tw.getPathString(), result);
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
return true;
|
||||
} else if (!attributes.canBeContentMerged()) {
|
||||
add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH, 0);
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0);
|
||||
add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0);
|
||||
|
||||
if (gitlinkConflict) {
|
||||
MergeResult<SubmoduleConflict> result = new MergeResult<>(
|
||||
Arrays.asList(
|
||||
new SubmoduleConflict(base == null ? null
|
||||
: base.getEntryObjectId()),
|
||||
new SubmoduleConflict(ours == null ? null
|
||||
: ours.getEntryObjectId()),
|
||||
new SubmoduleConflict(theirs == null ? null
|
||||
: theirs.getEntryObjectId())));
|
||||
result.setContainsConflicts(true);
|
||||
mergeResults.put(tw.getPathString(), result);
|
||||
if (!ignoreConflicts) {
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
}
|
||||
} else {
|
||||
// attribute merge issues are conflicts but not failures
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
}
|
||||
// attribute merge issues are conflicts but not failures
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
return true;
|
||||
}
|
||||
|
||||
|
@ -786,45 +784,73 @@ protected boolean processEntry(CanonicalTreeParser base,
|
|||
// OURS or THEIRS has been deleted
|
||||
if (((modeO != 0 && !tw.idEqual(T_BASE, T_OURS)) || (modeT != 0 && !tw
|
||||
.idEqual(T_BASE, T_THEIRS)))) {
|
||||
MergeResult<RawText> result = contentMerge(base, ours, theirs,
|
||||
attributes);
|
||||
|
||||
if (ignoreConflicts) {
|
||||
// In case a conflict is detected the working tree file is
|
||||
// again filled with new content (containing conflict
|
||||
// markers). But also stage 0 of the index is filled with
|
||||
// that content.
|
||||
result.setContainsConflicts(false);
|
||||
updateIndex(base, ours, theirs, result, attributes);
|
||||
} else {
|
||||
if (gitLinkMerging && ignoreConflicts) {
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_0, EPOCH, 0);
|
||||
} else if (gitLinkMerging) {
|
||||
add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH, 0);
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0);
|
||||
DirCacheEntry e = add(tw.getRawPath(), theirs,
|
||||
DirCacheEntry.STAGE_3, EPOCH, 0);
|
||||
add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0);
|
||||
MergeResult<SubmoduleConflict> result = createGitLinksMergeResult(
|
||||
base, ours, theirs);
|
||||
result.setContainsConflicts(true);
|
||||
mergeResults.put(tw.getPathString(), result);
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
} else {
|
||||
MergeResult<RawText> result = contentMerge(base, ours,
|
||||
theirs, attributes);
|
||||
|
||||
// OURS was deleted checkout THEIRS
|
||||
if (modeO == 0) {
|
||||
// Check worktree before checking out THEIRS
|
||||
if (isWorktreeDirty(work, ourDce)) {
|
||||
return false;
|
||||
}
|
||||
if (nonTree(modeT)) {
|
||||
if (e != null) {
|
||||
addToCheckout(tw.getPathString(), e, attributes);
|
||||
if (ignoreConflicts) {
|
||||
// In case a conflict is detected the working tree file
|
||||
// is again filled with new content (containing conflict
|
||||
// markers). But also stage 0 of the index is filled
|
||||
// with that content.
|
||||
result.setContainsConflicts(false);
|
||||
updateIndex(base, ours, theirs, result, attributes);
|
||||
} else {
|
||||
add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH,
|
||||
0);
|
||||
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH,
|
||||
0);
|
||||
DirCacheEntry e = add(tw.getRawPath(), theirs,
|
||||
DirCacheEntry.STAGE_3, EPOCH, 0);
|
||||
|
||||
// OURS was deleted checkout THEIRS
|
||||
if (modeO == 0) {
|
||||
// Check worktree before checking out THEIRS
|
||||
if (isWorktreeDirty(work, ourDce)) {
|
||||
return false;
|
||||
}
|
||||
if (nonTree(modeT)) {
|
||||
if (e != null) {
|
||||
addToCheckout(tw.getPathString(), e,
|
||||
attributes);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
|
||||
// generate a MergeResult for the deleted file
|
||||
mergeResults.put(tw.getPathString(), result);
|
||||
}
|
||||
|
||||
unmergedPaths.add(tw.getPathString());
|
||||
|
||||
// generate a MergeResult for the deleted file
|
||||
mergeResults.put(tw.getPathString(), result);
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
private static MergeResult<SubmoduleConflict> createGitLinksMergeResult(
|
||||
CanonicalTreeParser base, CanonicalTreeParser ours,
|
||||
CanonicalTreeParser theirs) {
|
||||
return new MergeResult<>(Arrays.asList(
|
||||
new SubmoduleConflict(
|
||||
base == null ? null : base.getEntryObjectId()),
|
||||
new SubmoduleConflict(
|
||||
ours == null ? null : ours.getEntryObjectId()),
|
||||
new SubmoduleConflict(
|
||||
theirs == null ? null : theirs.getEntryObjectId())));
|
||||
}
|
||||
|
||||
/**
|
||||
* Does the content merge. The three texts base, ours and theirs are
|
||||
* specified with {@link CanonicalTreeParser}. If any of the parsers is
|
||||
|
|
Loading…
Reference in New Issue