Implement ours/theirs content conflict resolution

Git has different conflict resolution strategies:

* There is a tree merge strategy "ours" which just ignores any changes
  from theirs ("-s ours"). JGit also has the mirror strategy "theirs"
  ignoring any changes from "ours". (This doesn't exist in C git.)
  Adapt StashApplyCommand and CherrypickCommand to be able to use those
  tree merge strategies.
* For the resolve/recursive tree merge strategies, there are content
  conflict resolution strategies "ours" and "theirs", which resolve
  any conflict hunks by taking the "ours" or "theirs" hunk. In C git
  those correspond to "-Xours" or -Xtheirs". Implement that in
  MergeAlgorithm, and add API to set and pass through such a strategy
  for resolving content conflicts.
* The "ours/theirs" content conflict resolution strategies also apply
  for binary files. Handle these cases in ResolveMerger.

Note that the content conflict resolution strategies ("-X ours/theirs")
do _not_ apply to modify/delete or delete/modify conflicts. Such
conflicts are always reported as conflicts by C git. They do apply,
however, if one side completely clears a file's content.

Bug: 501111
Change-Id: I2c9c170c61c440a2ab9c387991e7a0c3ab960e07
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This commit is contained in:
Thomas Wolf 2021-04-12 23:50:54 +02:00 committed by Matthias Sohn
parent 983c25064e
commit 8210f29fe4
15 changed files with 1085 additions and 114 deletions

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@ -115,6 +115,7 @@ metaVar_configFile=FILE
metaVar_connProp=conn.prop
metaVar_diffAlg=ALGORITHM
metaVar_directory=DIRECTORY
metaVar_extraArgument=ours|theirs
metaVar_file=FILE
metaVar_filepattern=filepattern
metaVar_gitDir=GIT_DIR
@ -217,6 +218,7 @@ timeInMilliSeconds={0} ms
treeIsRequired=argument tree is required
tooManyRefsGiven=Too many refs given
unknownIoErrorStdout=An unknown I/O error occurred on standard output
unknownExtraArgument=unknown extra argument -X {0} specified
unknownMergeStrategy=unknown merge strategy {0} specified
unknownSubcommand=Unknown subcommand: {0}
unmergedPaths=Unmerged paths:
@ -226,6 +228,7 @@ updating=Updating {0}..{1}
usage_Aggressive=This option will cause gc to more aggressively optimize the repository at the expense of taking much more time
usage_AlwaysFallback=Show uniquely abbreviated commit object as fallback
usage_bareClone=Make a bare Git repository. That is, instead of creating [DIRECTORY] and placing the administrative files in [DIRECTORY]/.git, make the [DIRECTORY] itself the $GIT_DIR.
usage_extraArgument=Pass an extra argument to a merge driver. Currently supported are "-X ours" and "-X theirs".
usage_mirrorClone=Set up a mirror of the source repository. This implies --bare. Compared to --bare, --mirror not only maps \
local branches of the source to local branches of the target, it maps all refs (including remote-tracking branches, notes etc.) \
and sets up a refspec configuration such that all these refs are overwritten by a git remote update in the target repository.

View File

@ -24,6 +24,7 @@
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
import org.eclipse.jgit.pgm.internal.CLIText;
@ -69,6 +70,20 @@ void ffonly(@SuppressWarnings("unused") final boolean ignored) {
@Option(name = "-m", usage = "usage_message")
private String message;
private ContentMergeStrategy contentStrategy = null;
@Option(name = "--strategy-option", aliases = { "-X" },
metaVar = "metaVar_extraArgument", usage = "usage_extraArgument")
void extraArg(String name) {
if (ContentMergeStrategy.OURS.name().equalsIgnoreCase(name)) {
contentStrategy = ContentMergeStrategy.OURS;
} else if (ContentMergeStrategy.THEIRS.name().equalsIgnoreCase(name)) {
contentStrategy = ContentMergeStrategy.THEIRS;
} else {
throw die(MessageFormat.format(CLIText.get().unknownExtraArgument, name));
}
}
/** {@inheritDoc} */
@Override
protected void run() {
@ -96,8 +111,11 @@ protected void run() {
Ref oldHead = getOldHead();
MergeResult result;
try (Git git = new Git(db)) {
MergeCommand mergeCmd = git.merge().setStrategy(mergeStrategy)
.setSquash(squash).setFastForward(ff)
MergeCommand mergeCmd = git.merge()
.setStrategy(mergeStrategy)
.setContentMergeStrategy(contentStrategy)
.setSquash(squash)
.setFastForward(ff)
.setCommit(!noCommit);
if (srcRef != null) {
mergeCmd.include(srcRef);

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@ -284,6 +284,7 @@ public static String fatalError(String message) {
/***/ public String tooManyRefsGiven;
/***/ public String treeIsRequired;
/***/ public char[] unknownIoErrorStdout;
/***/ public String unknownExtraArgument;
/***/ public String unknownMergeStrategy;
/***/ public String unknownSubcommand;
/***/ public String unmergedPaths;

View File

@ -34,6 +34,8 @@
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ReflogReader;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
import org.eclipse.jgit.revwalk.RevCommit;
import org.junit.Test;
@ -193,7 +195,7 @@ public void testCherryPickConflictResolution() throws Exception {
}
@Test
public void testCherryPickConflictResolutionNoCOmmit() throws Exception {
public void testCherryPickConflictResolutionNoCommit() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
@ -279,6 +281,70 @@ public void testCherryPickOverExecutableChangeOnNonExectuableFileSystem()
}
}
@Test
public void testCherryPickOurs() throws Exception {
try (Git git = new Git(db)) {
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick()
.include(sideCommit.getId())
.setStrategy(MergeStrategy.OURS)
.call();
assertEquals(CherryPickStatus.OK, result.getStatus());
String expected = "a(master)";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
}
@Test
public void testCherryPickTheirs() throws Exception {
try (Git git = new Git(db)) {
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick()
.include(sideCommit.getId())
.setStrategy(MergeStrategy.THEIRS)
.call();
assertEquals(CherryPickStatus.OK, result.getStatus());
String expected = "a(side)";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
}
@Test
public void testCherryPickXours() throws Exception {
try (Git git = new Git(db)) {
RevCommit sideCommit = prepareCherryPickStrategyOption(git);
CherryPickResult result = git.cherryPick()
.include(sideCommit.getId())
.setContentMergeStrategy(ContentMergeStrategy.OURS)
.call();
assertEquals(CherryPickStatus.OK, result.getStatus());
String expected = "a\nmaster\nc\nd\n";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
}
@Test
public void testCherryPickXtheirs() throws Exception {
try (Git git = new Git(db)) {
RevCommit sideCommit = prepareCherryPickStrategyOption(git);
CherryPickResult result = git.cherryPick()
.include(sideCommit.getId())
.setContentMergeStrategy(ContentMergeStrategy.THEIRS)
.call();
assertEquals(CherryPickStatus.OK, result.getStatus());
String expected = "a\nside\nc\nd\n";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
}
@Test
public void testCherryPickConflictMarkers() throws Exception {
try (Git git = new Git(db)) {
@ -384,6 +450,31 @@ private RevCommit prepareCherryPick(Git git) throws Exception {
return sideCommit;
}
private RevCommit prepareCherryPickStrategyOption(Git git)
throws Exception {
// create, add and commit file a
writeTrashFile("a", "a\nb\nc\n");
git.add().addFilepattern("a").call();
RevCommit firstMasterCommit = git.commit().setMessage("first master")
.call();
// create and checkout side branch
createBranch(firstMasterCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
// modify, add and commit file a
writeTrashFile("a", "a\nside\nc\nd\n");
git.add().addFilepattern("a").call();
RevCommit sideCommit = git.commit().setMessage("side").call();
// checkout master branch
checkoutBranch("refs/heads/master");
// modify, add and commit file a
writeTrashFile("a", "a\nmaster\nc\n");
git.add().addFilepattern("a").call();
git.commit().setMessage("second master").call();
return sideCommit;
}
private void doCherryPickAndCheckResult(final Git git,
final RevCommit sideCommit, final MergeFailureReason reason)
throws Exception {

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@ -14,6 +14,7 @@
import static org.eclipse.jgit.lib.Constants.R_HEADS;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@ -25,6 +26,7 @@
import org.eclipse.jgit.api.MergeCommand.FastForwardMode;
import org.eclipse.jgit.api.MergeResult.MergeStatus;
import org.eclipse.jgit.api.ResetCommand.ResetType;
import org.eclipse.jgit.api.errors.InvalidMergeHeadsException;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.junit.TestRepository;
@ -34,6 +36,7 @@
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.lib.Sets;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
import org.eclipse.jgit.revwalk.RevCommit;
@ -305,6 +308,200 @@ public void testContentMerge() throws Exception {
}
}
@Test
public void testContentMergeXtheirs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
writeTrashFile("c/c/c", "1\nc\n3\n");
git.add().addFilepattern("a").addFilepattern("b")
.addFilepattern("c/c/c").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "1\na(side)\n3\n4\n");
writeTrashFile("b", "1\nb(side)\n3\n4\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
assertEquals("1\nb(side)\n3\n4\n",
read(new File(db.getWorkTree(), "b")));
checkoutBranch("refs/heads/master");
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
writeTrashFile("a", "1\na(main)\n3\n");
writeTrashFile("c/c/c", "1\nc(main)\n3\n");
git.add().addFilepattern("a").addFilepattern("c/c/c").call();
git.commit().setMessage("main").call();
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(ContentMergeStrategy.THEIRS)
.call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertEquals("1\na(side)\n3\n4\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("1\nb(side)\n3\n4\n",
read(new File(db.getWorkTree(), "b")));
assertEquals("1\nc(main)\n3\n",
read(new File(db.getWorkTree(), "c/c/c")));
assertNull(result.getConflicts());
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
}
@Test
public void testContentMergeXours() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
writeTrashFile("c/c/c", "1\nc\n3\n");
git.add().addFilepattern("a").addFilepattern("b")
.addFilepattern("c/c/c").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "1\na(side)\n3\n4\n");
writeTrashFile("b", "1\nb(side)\n3\n4\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
assertEquals("1\nb(side)\n3\n4\n",
read(new File(db.getWorkTree(), "b")));
checkoutBranch("refs/heads/master");
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
writeTrashFile("a", "1\na(main)\n3\n");
writeTrashFile("c/c/c", "1\nc(main)\n3\n");
git.add().addFilepattern("a").addFilepattern("c/c/c").call();
git.commit().setMessage("main").call();
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(ContentMergeStrategy.OURS).call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertEquals("1\na(main)\n3\n4\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("1\nb(side)\n3\n4\n",
read(new File(db.getWorkTree(), "b")));
assertEquals("1\nc(main)\n3\n",
read(new File(db.getWorkTree(), "c/c/c")));
assertNull(result.getConflicts());
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
}
@Test
public void testBinaryContentMerge() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile(".gitattributes", "a binary");
writeTrashFile("a", "initial");
git.add().addFilepattern(".").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "side");
git.add().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
checkoutBranch("refs/heads/master");
writeTrashFile("a", "main");
git.add().addFilepattern("a").call();
git.commit().setMessage("main").call();
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE).call();
assertEquals(MergeStatus.CONFLICTING, result.getMergeStatus());
assertEquals("main", read(new File(db.getWorkTree(), "a")));
// Hmmm... there doesn't seem to be a way to figure out which files
// had a binary conflict from a MergeResult...
assertEquals(RepositoryState.MERGING, db.getRepositoryState());
}
}
@Test
public void testBinaryContentMergeXtheirs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile(".gitattributes", "a binary");
writeTrashFile("a", "initial");
git.add().addFilepattern(".").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "side");
git.add().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
checkoutBranch("refs/heads/master");
writeTrashFile("a", "main");
git.add().addFilepattern("a").call();
git.commit().setMessage("main").call();
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(ContentMergeStrategy.THEIRS)
.call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertEquals("side", read(new File(db.getWorkTree(), "a")));
assertNull(result.getConflicts());
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
}
@Test
public void testBinaryContentMergeXours() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile(".gitattributes", "a binary");
writeTrashFile("a", "initial");
git.add().addFilepattern(".").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "side");
git.add().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
checkoutBranch("refs/heads/master");
writeTrashFile("a", "main");
git.add().addFilepattern("a").call();
git.commit().setMessage("main").call();
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(ContentMergeStrategy.OURS).call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertEquals("main", read(new File(db.getWorkTree(), "a")));
assertNull(result.getConflicts());
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
}
@Test
public void testMergeTag() throws Exception {
try (Git git = new Git(db)) {
@ -774,6 +971,51 @@ public void testDeletionAndConflict() throws Exception {
@Test
public void testDeletionOnMasterConflict() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
// create side branch and modify "a"
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "1\na(side)\n3\n");
git.add().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
// delete a on master to generate conflict
checkoutBranch("refs/heads/master");
git.rm().addFilepattern("a").call();
RevCommit thirdCommit = git.commit().setMessage("main").call();
for (ContentMergeStrategy contentStrategy : ContentMergeStrategy
.values()) {
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(contentStrategy)
.call();
assertEquals("merge -X " + contentStrategy.name(),
MergeStatus.CONFLICTING, result.getMergeStatus());
// result should be 'a' conflicting with workspace content from
// side
assertTrue("merge -X " + contentStrategy.name(),
new File(db.getWorkTree(), "a").exists());
assertEquals("merge -X " + contentStrategy.name(),
"1\na(side)\n3\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("merge -X " + contentStrategy.name(), "1\nb\n3\n",
read(new File(db.getWorkTree(), "b")));
git.reset().setMode(ResetType.HARD).setRef(thirdCommit.name())
.call();
}
}
}
@Test
public void testDeletionOnMasterTheirs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
@ -794,18 +1036,102 @@ public void testDeletionOnMasterConflict() throws Exception {
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE).call();
assertEquals(MergeStatus.CONFLICTING, result.getMergeStatus());
.setStrategy(MergeStrategy.THEIRS)
.call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
// result should be 'a' conflicting with workspace content from side
// result should be 'a'
assertTrue(new File(db.getWorkTree(), "a").exists());
assertEquals("1\na(side)\n3\n", read(new File(db.getWorkTree(), "a")));
assertEquals("1\na(side)\n3\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
assertTrue(git.status().call().isClean());
}
}
@Test
public void testDeletionOnMasterOurs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
// create side branch and modify "a"
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
writeTrashFile("a", "1\na(side)\n3\n");
git.add().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
// delete a on master to generate conflict
checkoutBranch("refs/heads/master");
git.rm().addFilepattern("a").call();
git.commit().setMessage("main").call();
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.OURS).call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertFalse(new File(db.getWorkTree(), "a").exists());
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
assertTrue(git.status().call().isClean());
}
}
@Test
public void testDeletionOnSideConflict() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
// create side branch and delete "a"
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
git.rm().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
// update a on master to generate conflict
checkoutBranch("refs/heads/master");
writeTrashFile("a", "1\na(main)\n3\n");
git.add().addFilepattern("a").call();
RevCommit thirdCommit = git.commit().setMessage("main").call();
for (ContentMergeStrategy contentStrategy : ContentMergeStrategy
.values()) {
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE)
.setContentMergeStrategy(contentStrategy)
.call();
assertEquals("merge -X " + contentStrategy.name(),
MergeStatus.CONFLICTING, result.getMergeStatus());
assertTrue("merge -X " + contentStrategy.name(),
new File(db.getWorkTree(), "a").exists());
assertEquals("merge -X " + contentStrategy.name(),
"1\na(main)\n3\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("merge -X " + contentStrategy.name(), "1\nb\n3\n",
read(new File(db.getWorkTree(), "b")));
assertNotNull("merge -X " + contentStrategy.name(),
result.getConflicts());
assertEquals("merge -X " + contentStrategy.name(), 1,
result.getConflicts().size());
assertEquals("merge -X " + contentStrategy.name(), 3,
result.getConflicts().get("a")[0].length);
git.reset().setMode(ResetType.HARD).setRef(thirdCommit.name())
.call();
}
}
}
@Test
public void testDeletionOnSideTheirs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
@ -826,15 +1152,45 @@ public void testDeletionOnSideConflict() throws Exception {
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.RESOLVE).call();
assertEquals(MergeStatus.CONFLICTING, result.getMergeStatus());
.setStrategy(MergeStrategy.THEIRS).call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertFalse(new File(db.getWorkTree(), "a").exists());
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
assertTrue(git.status().call().isClean());
}
}
@Test
public void testDeletionOnSideOurs() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("a", "1\na\n3\n");
writeTrashFile("b", "1\nb\n3\n");
git.add().addFilepattern("a").addFilepattern("b").call();
RevCommit initialCommit = git.commit().setMessage("initial").call();
// create side branch and delete "a"
createBranch(initialCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
git.rm().addFilepattern("a").call();
RevCommit secondCommit = git.commit().setMessage("side").call();
// update a on master to generate conflict
checkoutBranch("refs/heads/master");
writeTrashFile("a", "1\na(main)\n3\n");
git.add().addFilepattern("a").call();
git.commit().setMessage("main").call();
// merge side with master
MergeResult result = git.merge().include(secondCommit.getId())
.setStrategy(MergeStrategy.OURS).call();
assertEquals(MergeStatus.MERGED, result.getMergeStatus());
assertTrue(new File(db.getWorkTree(), "a").exists());
assertEquals("1\na(main)\n3\n", read(new File(db.getWorkTree(), "a")));
assertEquals("1\na(main)\n3\n",
read(new File(db.getWorkTree(), "a")));
assertEquals("1\nb\n3\n", read(new File(db.getWorkTree(), "b")));
assertEquals(1, result.getConflicts().size());
assertEquals(3, result.getConflicts().get("a")[0].length);
assertTrue(git.status().call().isClean());
}
}

View File

@ -34,6 +34,8 @@
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevSort;
import org.eclipse.jgit.revwalk.RevWalk;
@ -153,6 +155,75 @@ public void testPullConflict() throws Exception {
.getRepositoryState());
}
@Test
public void testPullConflictTheirs() throws Exception {
PullResult res = target.pull().call();
// nothing to update since we don't have different data yet
assertTrue(res.getFetchResult().getTrackingRefUpdates().isEmpty());
assertTrue(res.getMergeResult().getMergeStatus()
.equals(MergeStatus.ALREADY_UP_TO_DATE));
assertFileContentsEqual(targetFile, "Hello world");
// change the source file
writeToFile(sourceFile, "Source change");
source.add().addFilepattern("SomeFile.txt").call();
source.commit().setMessage("Source change in remote").call();
// change the target file
writeToFile(targetFile, "Target change");
target.add().addFilepattern("SomeFile.txt").call();
target.commit().setMessage("Target change in local").call();
res = target.pull().setStrategy(MergeStrategy.THEIRS).call();
assertTrue(res.isSuccessful());
assertFileContentsEqual(targetFile, "Source change");
assertEquals(RepositoryState.SAFE,
target.getRepository().getRepositoryState());
assertTrue(target.status().call().isClean());
}
@Test
public void testPullConflictXtheirs() throws Exception {
PullResult res = target.pull().call();
// nothing to update since we don't have different data yet
assertTrue(res.getFetchResult().getTrackingRefUpdates().isEmpty());
assertTrue(res.getMergeResult().getMergeStatus()
.equals(MergeStatus.ALREADY_UP_TO_DATE));
assertFileContentsEqual(targetFile, "Hello world");
// change the source file
writeToFile(sourceFile, "a\nHello\nb\n");
source.add().addFilepattern("SomeFile.txt").call();
source.commit().setMessage("Multi-line change in remote").call();
// Pull again
res = target.pull().call();
assertTrue(res.isSuccessful());
assertFileContentsEqual(targetFile, "a\nHello\nb\n");
// change the source file
writeToFile(sourceFile, "a\nSource change\nb\n");
source.add().addFilepattern("SomeFile.txt").call();
source.commit().setMessage("Source change in remote").call();
// change the target file
writeToFile(targetFile, "a\nTarget change\nb\nc\n");
target.add().addFilepattern("SomeFile.txt").call();
target.commit().setMessage("Target change in local").call();
res = target.pull().setContentMergeStrategy(ContentMergeStrategy.THEIRS)
.call();
assertTrue(res.isSuccessful());
assertFileContentsEqual(targetFile, "a\nSource change\nb\nc\n");
assertEquals(RepositoryState.SAFE,
target.getRepository().getRepositoryState());
assertTrue(target.status().call().isClean());
}
@Test
public void testPullWithUntrackedStash() throws Exception {
target.pull().call();

View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2012, GitHub Inc. and others
* Copyright (C) 2012, 2021 GitHub 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
@ -28,6 +28,8 @@
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.util.FileUtils;
import org.junit.After;
@ -426,6 +428,135 @@ public void stashedContentMerge() throws Exception {
read(PATH));
}
@Test
public void stashedContentMergeXtheirs() throws Exception {
writeTrashFile(PATH, "content\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("more content").call();
writeTrashFile(PATH, "content\nhead change\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("even content").call();
writeTrashFile(PATH, "content\nstashed change\nmore content\n");
RevCommit stashed = git.stashCreate().call();
assertNotNull(stashed);
assertEquals("content\nhead change\nmore content\n",
read(committedFile));
assertTrue(git.status().call().isClean());
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
writeTrashFile(PATH, "content\nmore content\ncommitted change\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("committed change").call();
recorder.assertNoEvent();
git.stashApply().setContentMergeStrategy(ContentMergeStrategy.THEIRS)
.call();
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
Status status = new StatusCommand(db).call();
assertEquals('[' + PATH + ']', status.getModified().toString());
assertEquals(
"content\nstashed change\nmore content\ncommitted change\n",
read(PATH));
}
@Test
public void stashedContentMergeXours() throws Exception {
writeTrashFile(PATH, "content\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("more content").call();
writeTrashFile(PATH, "content\nhead change\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("even content").call();
writeTrashFile(PATH, "content\nstashed change\nmore content\n");
RevCommit stashed = git.stashCreate().call();
assertNotNull(stashed);
assertEquals("content\nhead change\nmore content\n",
read(committedFile));
assertTrue(git.status().call().isClean());
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
writeTrashFile(PATH,
"content\nnew head\nmore content\ncommitted change\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("committed change").call();
recorder.assertNoEvent();
git.stashApply().setContentMergeStrategy(ContentMergeStrategy.OURS)
.call();
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
assertTrue(git.status().call().isClean());
assertEquals("content\nnew head\nmore content\ncommitted change\n",
read(PATH));
}
@Test
public void stashedContentMergeTheirs() throws Exception {
writeTrashFile(PATH, "content\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("more content").call();
writeTrashFile(PATH, "content\nhead change\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("even content").call();
writeTrashFile(PATH, "content\nstashed change\nmore content\n");
RevCommit stashed = git.stashCreate().call();
assertNotNull(stashed);
assertEquals("content\nhead change\nmore content\n",
read(committedFile));
assertTrue(git.status().call().isClean());
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
writeTrashFile(PATH, "content\nmore content\ncommitted change\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("committed change").call();
recorder.assertNoEvent();
git.stashApply().setStrategy(MergeStrategy.THEIRS).call();
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
Status status = new StatusCommand(db).call();
assertEquals('[' + PATH + ']', status.getModified().toString());
assertEquals("content\nstashed change\nmore content\n", read(PATH));
}
@Test
public void stashedContentMergeOurs() throws Exception {
writeTrashFile(PATH, "content\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("more content").call();
writeTrashFile(PATH, "content\nhead change\nmore content\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("even content").call();
writeTrashFile(PATH, "content\nstashed change\nmore content\n");
RevCommit stashed = git.stashCreate().call();
assertNotNull(stashed);
assertEquals("content\nhead change\nmore content\n",
read(committedFile));
assertTrue(git.status().call().isClean());
recorder.assertEvent(new String[] { PATH }, ChangeRecorder.EMPTY);
writeTrashFile(PATH, "content\nmore content\ncommitted change\n");
git.add().addFilepattern(PATH).call();
git.commit().setMessage("committed change").call();
recorder.assertNoEvent();
// Doesn't make any sense... should be a no-op
git.stashApply().setStrategy(MergeStrategy.OURS).call();
recorder.assertNoEvent();
assertTrue(git.status().call().isClean());
assertEquals("content\nmore content\ncommitted change\n", read(PATH));
}
@Test
public void stashedApplyOnOtherBranch() throws Exception {
writeTrashFile(PATH, "content\nmore content\n");

View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.com> and others
* Copyright (C) 2010, 2021 Christian Halstrick <christian.halstrick@sap.com> 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
@ -13,6 +13,7 @@
import java.text.MessageFormat;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
import org.eclipse.jgit.api.errors.GitAPIException;
@ -35,9 +36,12 @@
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Ref.Storage;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeMessageFormatter;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.merge.Merger;
import org.eclipse.jgit.merge.ResolveMerger;
import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.treewalk.FileTreeIterator;
@ -61,6 +65,8 @@ public class CherryPickCommand extends GitCommand<CherryPickResult> {
private MergeStrategy strategy = MergeStrategy.RECURSIVE;
private ContentMergeStrategy contentStrategy;
private Integer mainlineParentNumber;
private boolean noCommit = false;
@ -121,16 +127,30 @@ public CherryPickResult call() throws GitAPIException, NoMessageException,
String cherryPickName = srcCommit.getId().abbreviate(7).name()
+ " " + srcCommit.getShortMessage(); //$NON-NLS-1$
ResolveMerger merger = (ResolveMerger) strategy.newMerger(repo);
merger.setWorkingTreeIterator(new FileTreeIterator(repo));
merger.setBase(srcParent.getTree());
merger.setCommitNames(new String[] { "BASE", ourName, //$NON-NLS-1$
cherryPickName });
if (merger.merge(newHead, srcCommit)) {
if (!merger.getModifiedFiles().isEmpty()) {
Merger merger = strategy.newMerger(repo);
merger.setProgressMonitor(monitor);
boolean noProblems;
Map<String, MergeFailureReason> failingPaths = null;
List<String> unmergedPaths = null;
if (merger instanceof ResolveMerger) {
ResolveMerger resolveMerger = (ResolveMerger) merger;
resolveMerger.setContentMergeStrategy(contentStrategy);
resolveMerger.setCommitNames(
new String[] { "BASE", ourName, cherryPickName }); //$NON-NLS-1$
resolveMerger
.setWorkingTreeIterator(new FileTreeIterator(repo));
resolveMerger.setBase(srcParent.getTree());
noProblems = merger.merge(newHead, srcCommit);
failingPaths = resolveMerger.getFailingPaths();
unmergedPaths = resolveMerger.getUnmergedPaths();
if (!resolveMerger.getModifiedFiles().isEmpty()) {
repo.fireEvent(new WorkingTreeModifiedEvent(
merger.getModifiedFiles(), null));
resolveMerger.getModifiedFiles(), null));
}
} else {
noProblems = merger.merge(newHead, srcCommit);
}
if (noProblems) {
if (AnyObjectId.isEqual(newHead.getTree().getId(),
merger.getResultTreeId())) {
continue;
@ -153,24 +173,26 @@ public CherryPickResult call() throws GitAPIException, NoMessageException,
}
cherryPickedRefs.add(src);
} else {
if (merger.failed()) {
return new CherryPickResult(merger.getFailingPaths());
if (failingPaths != null && !failingPaths.isEmpty()) {
return new CherryPickResult(failingPaths);
}
// there are merge conflicts
String message = new MergeMessageFormatter()
String message;
if (unmergedPaths != null) {
message = new MergeMessageFormatter()
.formatWithConflicts(srcCommit.getFullMessage(),
merger.getUnmergedPaths());
unmergedPaths);
} else {
message = srcCommit.getFullMessage();
}
if (!noCommit) {
repo.writeCherryPickHead(srcCommit.getId());
}
repo.writeMergeCommitMsg(message);
repo.fireEvent(new WorkingTreeModifiedEvent(
merger.getModifiedFiles(), null));
return CherryPickResult.CONFLICT;
}
}
@ -290,6 +312,22 @@ public CherryPickCommand setStrategy(MergeStrategy strategy) {
return this;
}
/**
* Sets the content merge strategy to use if the
* {@link #setStrategy(MergeStrategy) merge strategy} is "resolve" or
* "recursive".
*
* @param strategy
* the {@link ContentMergeStrategy} to be used
* @return {@code this}
* @since 5.12
*/
public CherryPickCommand setContentMergeStrategy(
ContentMergeStrategy strategy) {
this.contentStrategy = strategy;
return this;
}
/**
* Set the (1-based) parent number to diff against
*

View File

@ -1,7 +1,7 @@
/*
* Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.com>
* Copyright (C) 2010-2014, Stefan Lay <stefan.lay@sap.com>
* Copyright (C) 2016, Laurent Delaigue <laurent.delaigue@obeo.fr> and others
* Copyright (C) 2010, 2014, Stefan Lay <stefan.lay@sap.com>
* Copyright (C) 2016, 2021 Laurent Delaigue <laurent.delaigue@obeo.fr> 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
@ -45,6 +45,7 @@
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeConfig;
import org.eclipse.jgit.merge.MergeMessageFormatter;
import org.eclipse.jgit.merge.MergeStrategy;
@ -71,6 +72,8 @@ public class MergeCommand extends GitCommand<MergeResult> {
private MergeStrategy mergeStrategy = MergeStrategy.RECURSIVE;
private ContentMergeStrategy contentStrategy;
private List<Ref> commits = new LinkedList<>();
private Boolean squash;
@ -320,6 +323,7 @@ public MergeResult call() throws GitAPIException, NoHeadException,
List<String> unmergedPaths = null;
if (merger instanceof ResolveMerger) {
ResolveMerger resolveMerger = (ResolveMerger) merger;
resolveMerger.setContentMergeStrategy(contentStrategy);
resolveMerger.setCommitNames(new String[] {
"BASE", "HEAD", ref.getName() }); //$NON-NLS-1$ //$NON-NLS-2$
resolveMerger.setWorkingTreeIterator(new FileTreeIterator(repo));
@ -472,6 +476,22 @@ public MergeCommand setStrategy(MergeStrategy mergeStrategy) {
return this;
}
/**
* Sets the content merge strategy to use if the
* {@link #setStrategy(MergeStrategy) merge strategy} is "resolve" or
* "recursive".
*
* @param strategy
* the {@link ContentMergeStrategy} to be used
* @return {@code this}
* @since 5.12
*/
public MergeCommand setContentMergeStrategy(ContentMergeStrategy strategy) {
checkCallable();
this.contentStrategy = strategy;
return this;
}
/**
* Reference to a commit to be merged with the current head
*

View File

@ -1,7 +1,7 @@
/*
* Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.com>
* Copyright (C) 2010, Mathias Kinzler <mathias.kinzler@sap.com>
* Copyright (C) 2016, Laurent Delaigue <laurent.delaigue@obeo.fr> and others
* Copyright (C) 2016, 2021 Laurent Delaigue <laurent.delaigue@obeo.fr> 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
@ -43,6 +43,7 @@
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.lib.SubmoduleConfig.FetchRecurseSubmodulesMode;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
@ -69,6 +70,8 @@ public class PullCommand extends TransportCommand<PullCommand, PullResult> {
private MergeStrategy strategy = MergeStrategy.RECURSIVE;
private ContentMergeStrategy contentStrategy;
private TagOpt tagOption;
private FastForwardMode fastForwardMode;
@ -275,8 +278,7 @@ public PullResult call() throws GitAPIException,
JGitText.get().pullTaskName));
// we check the updates to see which of the updated branches
// corresponds
// to the remote branch name
// corresponds to the remote branch name
AnyObjectId commitToMerge;
if (isRemote) {
Ref r = null;
@ -354,8 +356,11 @@ public PullResult call() throws GitAPIException,
}
RebaseCommand rebase = new RebaseCommand(repo);
RebaseResult rebaseRes = rebase.setUpstream(commitToMerge)
.setUpstreamName(upstreamName).setProgressMonitor(monitor)
.setOperation(Operation.BEGIN).setStrategy(strategy)
.setProgressMonitor(monitor)
.setUpstreamName(upstreamName)
.setOperation(Operation.BEGIN)
.setStrategy(strategy)
.setContentMergeStrategy(contentStrategy)
.setPreserveMerges(
pullRebaseMode == BranchRebaseMode.PRESERVE)
.call();
@ -363,7 +368,9 @@ public PullResult call() throws GitAPIException,
} else {
MergeCommand merge = new MergeCommand(repo);
MergeResult mergeRes = merge.include(upstreamName, commitToMerge)
.setStrategy(strategy).setProgressMonitor(monitor)
.setProgressMonitor(monitor)
.setStrategy(strategy)
.setContentMergeStrategy(contentStrategy)
.setFastForward(getFastForwardMode()).call();
monitor.update(1);
result = new PullResult(fetchRes, remote, mergeRes);
@ -441,6 +448,21 @@ public PullCommand setStrategy(MergeStrategy strategy) {
return this;
}
/**
* Sets the content merge strategy to use if the
* {@link #setStrategy(MergeStrategy) merge strategy} is "resolve" or
* "recursive".
*
* @param strategy
* the {@link ContentMergeStrategy} to be used
* @return {@code this}
* @since 5.12
*/
public PullCommand setContentMergeStrategy(ContentMergeStrategy strategy) {
this.contentStrategy = strategy;
return this;
}
/**
* Set the specification of annotated tag behavior during fetch
*

View File

@ -1,6 +1,6 @@
/*
* Copyright (C) 2010, 2013 Mathias Kinzler <mathias.kinzler@sap.com>
* Copyright (C) 2016, Laurent Delaigue <laurent.delaigue@obeo.fr> and others
* Copyright (C) 2016, 2021 Laurent Delaigue <laurent.delaigue@obeo.fr> 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
@ -65,6 +65,7 @@
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevSort;
@ -212,6 +213,8 @@ public enum Operation {
private MergeStrategy strategy = MergeStrategy.RECURSIVE;
private ContentMergeStrategy contentStrategy;
private boolean preserveMerges = false;
/**
@ -501,8 +504,11 @@ private RebaseResult cherryPickCommitFlattening(RevCommit commitToPick)
String ourCommitName = getOurCommitName();
try (Git git = new Git(repo)) {
CherryPickResult cherryPickResult = git.cherryPick()
.include(commitToPick).setOurCommitName(ourCommitName)
.setReflogPrefix(REFLOG_PREFIX).setStrategy(strategy)
.include(commitToPick)
.setOurCommitName(ourCommitName)
.setReflogPrefix(REFLOG_PREFIX)
.setStrategy(strategy)
.setContentMergeStrategy(contentStrategy)
.call();
switch (cherryPickResult.getStatus()) {
case FAILED:
@ -556,7 +562,8 @@ private RebaseResult cherryPickCommitPreservingMerges(RevCommit commitToPick)
.include(commitToPick)
.setOurCommitName(ourCommitName)
.setReflogPrefix(REFLOG_PREFIX)
.setStrategy(strategy);
.setStrategy(strategy)
.setContentMergeStrategy(contentStrategy);
if (isMerge) {
pickCommand.setMainlineParentNumber(1);
// We write a MERGE_HEAD and later commit explicitly
@ -592,6 +599,8 @@ private RebaseResult cherryPickCommitPreservingMerges(RevCommit commitToPick)
MergeCommand merge = git.merge()
.setFastForward(MergeCommand.FastForwardMode.NO_FF)
.setProgressMonitor(monitor)
.setStrategy(strategy)
.setContentMergeStrategy(contentStrategy)
.setCommit(false);
for (int i = 1; i < commitToPick.getParentCount(); i++)
merge.include(newParents.get(i));
@ -1137,7 +1146,7 @@ else if (!isInteractive() && walk.isMergedInto(headCommit, upstream)) {
}
private List<RevCommit> calculatePickList(RevCommit headCommit)
throws GitAPIException, NoHeadException, IOException {
throws IOException {
List<RevCommit> cherryPickList = new ArrayList<>();
try (RevWalk r = new RevWalk(repo)) {
r.sort(RevSort.TOPO_KEEP_BRANCH_TOGETHER, true);
@ -1586,6 +1595,21 @@ public RebaseCommand setStrategy(MergeStrategy strategy) {
return this;
}
/**
* Sets the content merge strategy to use if the
* {@link #setStrategy(MergeStrategy) merge strategy} is "resolve" or
* "recursive".
*
* @param strategy
* the {@link ContentMergeStrategy} to be used
* @return {@code this}
* @since 5.12
*/
public RebaseCommand setContentMergeStrategy(ContentMergeStrategy strategy) {
this.contentStrategy = strategy;
return this;
}
/**
* Whether to preserve merges during rebase
*

View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2012, 2017 GitHub Inc. and others
* Copyright (C) 2012, 2021 GitHub 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
@ -38,7 +38,9 @@
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.merge.ContentMergeStrategy;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.merge.Merger;
import org.eclipse.jgit.merge.ResolveMerger;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevTree;
@ -71,6 +73,8 @@ public class StashApplyCommand extends GitCommand<ObjectId> {
private MergeStrategy strategy = MergeStrategy.RECURSIVE;
private ContentMergeStrategy contentStrategy;
/**
* Create command to apply the changes of a stashed commit
*
@ -166,16 +170,25 @@ public ObjectId call() throws GitAPIException,
if (restoreUntracked && stashCommit.getParentCount() == 3)
untrackedCommit = revWalk.parseCommit(stashCommit.getParent(2));
ResolveMerger merger = (ResolveMerger) strategy.newMerger(repo);
merger.setCommitNames(new String[] { "stashed HEAD", "HEAD", //$NON-NLS-1$ //$NON-NLS-2$
"stash" }); //$NON-NLS-1$
merger.setBase(stashHeadCommit);
merger.setWorkingTreeIterator(new FileTreeIterator(repo));
boolean mergeSucceeded = merger.merge(headCommit, stashCommit);
List<String> modifiedByMerge = merger.getModifiedFiles();
if (!modifiedByMerge.isEmpty()) {
repo.fireEvent(
new WorkingTreeModifiedEvent(modifiedByMerge, null));
Merger merger = strategy.newMerger(repo);
boolean mergeSucceeded;
if (merger instanceof ResolveMerger) {
ResolveMerger resolveMerger = (ResolveMerger) merger;
resolveMerger
.setCommitNames(new String[] { "stashed HEAD", "HEAD", //$NON-NLS-1$ //$NON-NLS-2$
"stash" }); //$NON-NLS-1$
resolveMerger.setBase(stashHeadCommit);
resolveMerger
.setWorkingTreeIterator(new FileTreeIterator(repo));
resolveMerger.setContentMergeStrategy(contentStrategy);
mergeSucceeded = resolveMerger.merge(headCommit, stashCommit);
List<String> modifiedByMerge = resolveMerger.getModifiedFiles();
if (!modifiedByMerge.isEmpty()) {
repo.fireEvent(new WorkingTreeModifiedEvent(modifiedByMerge,
null));
}
} else {
mergeSucceeded = merger.merge(headCommit, stashCommit);
}
if (mergeSucceeded) {
DirCache dc = repo.lockDirCache();
@ -184,11 +197,14 @@ public ObjectId call() throws GitAPIException,
dco.setFailOnConflict(true);
dco.checkout(); // Ignoring failed deletes....
if (restoreIndex) {
ResolveMerger ixMerger = (ResolveMerger) strategy
.newMerger(repo, true);
ixMerger.setCommitNames(new String[] { "stashed HEAD", //$NON-NLS-1$
"HEAD", "stashed index" }); //$NON-NLS-1$//$NON-NLS-2$
ixMerger.setBase(stashHeadCommit);
Merger ixMerger = strategy.newMerger(repo, true);
if (ixMerger instanceof ResolveMerger) {
ResolveMerger resolveMerger = (ResolveMerger) ixMerger;
resolveMerger.setCommitNames(new String[] { "stashed HEAD", //$NON-NLS-1$
"HEAD", "stashed index" }); //$NON-NLS-1$//$NON-NLS-2$
resolveMerger.setBase(stashHeadCommit);
resolveMerger.setContentMergeStrategy(contentStrategy);
}
boolean ok = ixMerger.merge(headCommit, stashIndexCommit);
if (ok) {
resetIndex(revWalk
@ -200,16 +216,20 @@ public ObjectId call() throws GitAPIException,
}
if (untrackedCommit != null) {
ResolveMerger untrackedMerger = (ResolveMerger) strategy
.newMerger(repo, true);
untrackedMerger.setCommitNames(new String[] {
"null", "HEAD", "untracked files" }); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
// There is no common base for HEAD & untracked files
// because the commit for untracked files has no parent. If
// we use stashHeadCommit as common base (as in the other
// merges) we potentially report conflicts for files
// which are not even member of untracked files commit
untrackedMerger.setBase(null);
Merger untrackedMerger = strategy.newMerger(repo, true);
if (untrackedMerger instanceof ResolveMerger) {
ResolveMerger resolveMerger = (ResolveMerger) untrackedMerger;
resolveMerger.setCommitNames(new String[] { "null", "HEAD", //$NON-NLS-1$//$NON-NLS-2$
"untracked files" }); //$NON-NLS-1$
// There is no common base for HEAD & untracked files
// because the commit for untracked files has no parent.
// If we use stashHeadCommit as common base (as in the
// other merges) we potentially report conflicts for
// files which are not even member of untracked files
// commit.
resolveMerger.setBase(null);
resolveMerger.setContentMergeStrategy(contentStrategy);
}
boolean ok = untrackedMerger.merge(headCommit,
untrackedCommit);
if (ok) {
@ -278,6 +298,23 @@ public StashApplyCommand setStrategy(MergeStrategy strategy) {
return this;
}
/**
* Sets the content merge strategy to use if the
* {@link #setStrategy(MergeStrategy) merge strategy} is "resolve" or
* "recursive".
*
* @param strategy
* the {@link ContentMergeStrategy} to be used
* @return {@code this}
* @since 5.12
*/
public StashApplyCommand setContentMergeStrategy(
ContentMergeStrategy strategy) {
checkCallable();
this.contentStrategy = strategy;
return this;
}
/**
* Whether the command should restore untracked files
*

View File

@ -0,0 +1,27 @@
/*
* Copyright (C) 2021, Thomas Wolf <thomas.wolf@paranor.ch> 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.merge;
/**
* How to handle content conflicts.
*
* @since 5.12
*/
public enum ContentMergeStrategy {
/** Produce a conflict. */
CONFLICT,
/** Resolve the conflict hunk using the ours version. */
OURS,
/** Resolve the conflict hunk using the theirs version. */
THEIRS
}

View File

@ -14,6 +14,7 @@
import java.util.Iterator;
import java.util.List;
import org.eclipse.jgit.annotations.NonNull;
import org.eclipse.jgit.diff.DiffAlgorithm;
import org.eclipse.jgit.diff.Edit;
import org.eclipse.jgit.diff.EditList;
@ -28,8 +29,12 @@
* diff algorithm.
*/
public final class MergeAlgorithm {
private final DiffAlgorithm diffAlg;
@NonNull
private ContentMergeStrategy strategy = ContentMergeStrategy.CONFLICT;
/**
* Creates a new MergeAlgorithm which uses
* {@link org.eclipse.jgit.diff.HistogramDiff} as diff algorithm
@ -48,6 +53,30 @@ public MergeAlgorithm(DiffAlgorithm diff) {
this.diffAlg = diff;
}
/**
* Retrieves the {@link ContentMergeStrategy}.
*
* @return the {@link ContentMergeStrategy} in effect
* @since 5.12
*/
@NonNull
public ContentMergeStrategy getContentMergeStrategy() {
return strategy;
}
/**
* Sets the {@link ContentMergeStrategy}.
*
* @param strategy
* {@link ContentMergeStrategy} to set; if {@code null}, set
* {@link ContentMergeStrategy#CONFLICT}
* @since 5.12
*/
public void setContentMergeStrategy(ContentMergeStrategy strategy) {
this.strategy = strategy == null ? ContentMergeStrategy.CONFLICT
: strategy;
}
// An special edit which acts as a sentinel value by marking the end the
// list of edits
private static final Edit END_EDIT = new Edit(Integer.MAX_VALUE,
@ -79,29 +108,54 @@ public <S extends Sequence> MergeResult<S> merge(
if (theirs.size() != 0) {
EditList theirsEdits = diffAlg.diff(cmp, base, theirs);
if (!theirsEdits.isEmpty()) {
// we deleted, they modified -> Let their complete content
// conflict with empty text
result.add(1, 0, 0, ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, 0, theirs.size(),
ConflictState.NEXT_CONFLICTING_RANGE);
} else
// we deleted, they modified
switch (strategy) {
case OURS:
result.add(1, 0, 0, ConflictState.NO_CONFLICT);
break;
case THEIRS:
result.add(2, 0, theirs.size(),
ConflictState.NO_CONFLICT);
break;
default:
// Let their complete content conflict with empty text
result.add(1, 0, 0,
ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, 0, theirs.size(),
ConflictState.NEXT_CONFLICTING_RANGE);
break;
}
} else {
// we deleted, they didn't modify -> Let our deletion win
result.add(1, 0, 0, ConflictState.NO_CONFLICT);
} else
}
} else {
// we and they deleted -> return a single chunk of nothing
result.add(1, 0, 0, ConflictState.NO_CONFLICT);
}
return result;
} else if (theirs.size() == 0) {
EditList oursEdits = diffAlg.diff(cmp, base, ours);
if (!oursEdits.isEmpty()) {
// we modified, they deleted -> Let our complete content
// conflict with empty text
result.add(1, 0, ours.size(),
ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, 0, 0, ConflictState.NEXT_CONFLICTING_RANGE);
} else
// we modified, they deleted
switch (strategy) {
case OURS:
result.add(1, 0, ours.size(), ConflictState.NO_CONFLICT);
break;
case THEIRS:
result.add(2, 0, 0, ConflictState.NO_CONFLICT);
break;
default:
// Let our complete content conflict with empty text
result.add(1, 0, ours.size(),
ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, 0, 0, ConflictState.NEXT_CONFLICTING_RANGE);
break;
}
} else {
// they deleted, we didn't modify -> Let their deletion win
result.add(2, 0, 0, ConflictState.NO_CONFLICT);
}
return result;
}
@ -249,12 +303,26 @@ public <S extends Sequence> MergeResult<S> merge(
// Add the conflict (Only if there is a conflict left to report)
if (minBSize > 0 || BSizeDelta != 0) {
result.add(1, oursBeginB + commonPrefix, oursEndB
- commonSuffix,
ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, theirsBeginB + commonPrefix, theirsEndB
- commonSuffix,
ConflictState.NEXT_CONFLICTING_RANGE);
switch (strategy) {
case OURS:
result.add(1, oursBeginB + commonPrefix,
oursEndB - commonSuffix,
ConflictState.NO_CONFLICT);
break;
case THEIRS:
result.add(2, theirsBeginB + commonPrefix,
theirsEndB - commonSuffix,
ConflictState.NO_CONFLICT);
break;
default:
result.add(1, oursBeginB + commonPrefix,
oursEndB - commonSuffix,
ConflictState.FIRST_CONFLICTING_RANGE);
result.add(2, theirsBeginB + commonPrefix,
theirsEndB - commonSuffix,
ConflictState.NEXT_CONFLICTING_RANGE);
break;
}
}
// Add the common lines at end of conflict

View File

@ -37,6 +37,7 @@
import java.util.List;
import java.util.Map;
import org.eclipse.jgit.annotations.NonNull;
import org.eclipse.jgit.attributes.Attributes;
import org.eclipse.jgit.diff.DiffAlgorithm;
import org.eclipse.jgit.diff.DiffAlgorithm.SupportedAlgorithm;
@ -267,6 +268,13 @@ public enum MergeFailureReason {
*/
private int inCoreLimit;
/**
* The {@link ContentMergeStrategy} to use for "resolve" and "recursive"
* merges.
*/
@NonNull
private ContentMergeStrategy contentStrategy = ContentMergeStrategy.CONFLICT;
/**
* Keeps {@link CheckoutMetadata} for {@link #checkout()} and
* {@link #cleanUp()}.
@ -344,6 +352,29 @@ protected ResolveMerger(ObjectInserter inserter, Config config) {
dircache = DirCache.newInCore();
}
/**
* Retrieves the content merge strategy for content conflicts.
*
* @return the {@link ContentMergeStrategy} in effect
* @since 5.12
*/
@NonNull
public ContentMergeStrategy getContentMergeStrategy() {
return contentStrategy;
}
/**
* Sets the content merge strategy for content conflicts.
*
* @param strategy
* {@link ContentMergeStrategy} to use
* @since 5.12
*/
public void setContentMergeStrategy(ContentMergeStrategy strategy) {
contentStrategy = strategy == null ? ContentMergeStrategy.CONFLICT
: strategy;
}
/** {@inheritDoc} */
@Override
protected boolean mergeImpl() throws IOException {
@ -654,7 +685,8 @@ protected boolean processEntry(CanonicalTreeParser base,
add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0);
add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0);
unmergedPaths.add(tw.getPathString());
mergeResults.put(tw.getPathString(), new MergeResult<>(Collections.<RawText>emptyList()));
mergeResults.put(tw.getPathString(),
new MergeResult<>(Collections.emptyList()));
}
return true;
}
@ -760,6 +792,19 @@ protected boolean processEntry(CanonicalTreeParser base,
unmergedPaths.add(tw.getPathString());
return true;
} else if (!attributes.canBeContentMerged()) {
// File marked as binary
switch (getContentMergeStrategy()) {
case OURS:
keep(ourDce);
return true;
case THEIRS:
DirCacheEntry theirEntry = add(tw.getRawPath(), theirs,
DirCacheEntry.STAGE_0, EPOCH, 0);
addToCheckout(tw.getPathString(), theirEntry, attributes);
return true;
default:
break;
}
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);
@ -774,8 +819,26 @@ protected boolean processEntry(CanonicalTreeParser base,
return false;
}
MergeResult<RawText> result = contentMerge(base, ours, theirs,
attributes);
MergeResult<RawText> result = null;
try {
result = contentMerge(base, ours, theirs, attributes,
getContentMergeStrategy());
} catch (BinaryBlobException e) {
switch (getContentMergeStrategy()) {
case OURS:
keep(ourDce);
return true;
case THEIRS:
DirCacheEntry theirEntry = add(tw.getRawPath(), theirs,
DirCacheEntry.STAGE_0, EPOCH, 0);
addToCheckout(tw.getPathString(), theirEntry, attributes);
return true;
default:
result = new MergeResult<>(Collections.emptyList());
result.setContainsConflicts(true);
break;
}
}
if (ignoreConflicts) {
result.setContainsConflicts(false);
}
@ -802,9 +865,16 @@ protected boolean processEntry(CanonicalTreeParser base,
mergeResults.put(tw.getPathString(), result);
unmergedPaths.add(tw.getPathString());
} else {
MergeResult<RawText> result = contentMerge(base, ours,
theirs, attributes);
// Content merge strategy does not apply to delete-modify
// conflicts!
MergeResult<RawText> result;
try {
result = contentMerge(base, ours, theirs, attributes,
ContentMergeStrategy.CONFLICT);
} catch (BinaryBlobException e) {
result = new MergeResult<>(Collections.emptyList());
result.setContainsConflicts(true);
}
if (ignoreConflicts) {
// In case a conflict is detected the working tree file
// is again filled with new content (containing conflict
@ -866,32 +936,26 @@ private static MergeResult<SubmoduleConflict> createGitLinksMergeResult(
* @param ours
* @param theirs
* @param attributes
* @param strategy
*
* @return the result of the content merge
* @throws BinaryBlobException
* if any of the blobs looks like a binary blob
* @throws IOException
*/
private MergeResult<RawText> contentMerge(CanonicalTreeParser base,
CanonicalTreeParser ours, CanonicalTreeParser theirs,
Attributes attributes)
throws IOException {
RawText baseText;
RawText ourText;
RawText theirsText;
try {
baseText = base == null ? RawText.EMPTY_TEXT : getRawText(
base.getEntryObjectId(), attributes);
ourText = ours == null ? RawText.EMPTY_TEXT : getRawText(
ours.getEntryObjectId(), attributes);
theirsText = theirs == null ? RawText.EMPTY_TEXT : getRawText(
theirs.getEntryObjectId(), attributes);
} catch (BinaryBlobException e) {
MergeResult<RawText> r = new MergeResult<>(Collections.<RawText>emptyList());
r.setContainsConflicts(true);
return r;
}
return (mergeAlgorithm.merge(RawTextComparator.DEFAULT, baseText,
ourText, theirsText));
Attributes attributes, ContentMergeStrategy strategy)
throws BinaryBlobException, IOException {
RawText baseText = base == null ? RawText.EMPTY_TEXT
: getRawText(base.getEntryObjectId(), attributes);
RawText ourText = ours == null ? RawText.EMPTY_TEXT
: getRawText(ours.getEntryObjectId(), attributes);
RawText theirsText = theirs == null ? RawText.EMPTY_TEXT
: getRawText(theirs.getEntryObjectId(), attributes);
mergeAlgorithm.setContentMergeStrategy(strategy);
return mergeAlgorithm.merge(RawTextComparator.DEFAULT, baseText,
ourText, theirsText);
}
private boolean isIndexDirty() {