/**
* Returns a list of references in the repository matching "refs". If the repository is null or
* empty, an empty list is returned.
*
* @param repository
* @param refs if unspecified, all refs are returned
* @param fullName if true, /refs/something/yadayadayada is returned. If false, yadayadayada is
* returned.
* @param maxCount if < 0, all references are returned
* @return list of references
*/
private static List<RefModel> getRefs(
Repository repository, String refs, boolean fullName, int maxCount) {
List<RefModel> list = new ArrayList<RefModel>();
if (maxCount == 0) {
return list;
}
if (!hasCommits(repository)) {
return list;
}
try {
Map<String, Ref> map = repository.getRefDatabase().getRefs(refs);
RevWalk rw = new RevWalk(repository);
for (Entry<String, Ref> entry : map.entrySet()) {
Ref ref = entry.getValue();
RevObject object = rw.parseAny(ref.getObjectId());
String name = entry.getKey();
if (fullName && !(refs == null)) {
name = refs + name;
}
list.add(new RefModel(name, ref, object));
}
rw.dispose();
Collections.sort(list);
Collections.reverse(list);
if (maxCount > 0 && list.size() > maxCount) {
list = new ArrayList<RefModel>(list.subList(0, maxCount));
}
} catch (IOException e) {
// todo
Logger.error(e, e.getMessage());
}
return list;
}
@Override
public void onContentChanged() {
super.onContentChanged();
Log.d(TAG, "updateUI called");
tagRef = repo().getTags().get(tagName);
if (objectSummaryView == null) {
Log.d(TAG, "onContentChanged() : objectSummaryView is null");
return;
}
if (tagRef == null) {
getSupportActionBar().setTitle("unknown tag");
} else {
ObjectId peeledObjectId = repo().peel(tagRef).getPeeledObjectId();
ObjectId taggedId = peeledObjectId == null ? tagRef.getObjectId() : peeledObjectId;
RevWalk revWalk = new RevWalk(repo());
ObjectId tagId = tagRef.getObjectId();
try {
final RevObject immediateTagRefObject = revWalk.parseAny(tagId);
objectSummaryView.setObject(immediateTagRefObject, repo());
if (immediateTagRefObject instanceof RevTag) {
revTag = revWalk.parseTag(tagId);
getSupportActionBar().setTitle(revTag.getTagName());
}
} catch (IOException e) {
Log.e(TAG, "Couldn't get parse tag", e);
Toast.makeText(this, "Couldn't get tag " + tagId, Toast.LENGTH_LONG).show();
}
}
}
private DhtRef doPeel(final Ref leaf) throws MissingObjectException, IOException {
RevWalk rw = new RevWalk(getRepository());
try {
DhtReader ctx = (DhtReader) rw.getObjectReader();
RevObject obj = rw.parseAny(leaf.getObjectId());
RefData.Builder d = RefData.newBuilder(((DhtRef) leaf).getRefData());
ChunkKey oKey = ctx.findChunk(leaf.getObjectId());
if (oKey != null) d.getTargetBuilder().setChunkKey(oKey.asString());
else d.getTargetBuilder().clearChunkKey();
if (obj instanceof RevTag) {
ObjectId pId = rw.peel(obj);
d.getPeeledBuilder().setObjectName(pId.name());
ChunkKey pKey = ctx.findChunk(pId);
if (pKey != null) d.getPeeledBuilder().setChunkKey(pKey.asString());
else d.getPeeledBuilder().clearChunkKey();
} else {
d.clearPeeled();
}
d.setIsPeeled(true);
d.setSequence(d.getSequence() + 1);
return new DhtObjectIdRef(leaf.getName(), d.build());
} finally {
rw.release();
}
}
private void markAdvertised(final AnyObjectId id) {
try {
walk.parseAny(id).add(ADVERTISED);
} catch (IOException readError) {
// We probably just do not have this object locally.
}
}
private boolean sendWants(final Collection<Ref> want) throws IOException {
final PacketLineOut p = statelessRPC ? pckState : pckOut;
boolean first = true;
for (final Ref r : want) {
try {
if (walk.parseAny(r.getObjectId()).has(REACHABLE)) {
// We already have this object. Asking for it is
// not a very good idea.
//
continue;
}
} catch (IOException err) {
// Its OK, we don't have it, but we want to fix that
// by fetching the object from the other side.
}
final StringBuilder line = new StringBuilder(46);
line.append("want ");
line.append(r.getObjectId().name());
if (first) {
line.append(enableCapabilities());
first = false;
}
line.append('\n');
p.writeString(line.toString());
}
if (first) return false;
p.end();
outNeedsEnd = false;
return true;
}
private ObjectIdRef doPeel(final Ref leaf) throws MissingObjectException, IOException {
try (RevWalk rw = new RevWalk(getRepository())) {
RevObject obj = rw.parseAny(leaf.getObjectId());
if (obj instanceof RevTag) {
return new ObjectIdRef.PeeledTag(
leaf.getStorage(), leaf.getName(), leaf.getObjectId(), rw.peel(obj).copy());
} else {
return new ObjectIdRef.PeeledNonTag(leaf.getStorage(), leaf.getName(), leaf.getObjectId());
}
}
}
/**
* Sets default values for not explicitly specified options. Then validates that all required data
* has been provided.
*
* @param state the state of the repository we are working on
* @param rw the RevWalk to use
* @throws NoMessageException if the commit message has not been specified
*/
private void processOptions(RepositoryState state, RevWalk rw) throws NoMessageException {
if (committer == null) committer = new PersonIdent(repo);
if (author == null && !amend) author = committer;
if (allowEmpty == null)
// JGit allows empty commits by default. Only when pathes are
// specified the commit should not be empty. This behaviour differs
// from native git but can only be adapted in the next release.
// TODO(ch) align the defaults with native git
allowEmpty = (only.isEmpty()) ? Boolean.TRUE : Boolean.FALSE;
// when doing a merge commit parse MERGE_HEAD and MERGE_MSG files
if (state == RepositoryState.MERGING_RESOLVED || isMergeDuringRebase(state)) {
try {
parents = repo.readMergeHeads();
if (parents != null)
for (int i = 0; i < parents.size(); i++) {
RevObject ro = rw.parseAny(parents.get(i));
if (ro instanceof RevTag) parents.set(i, rw.peel(ro));
}
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_HEAD, e),
e);
}
if (message == null) {
try {
message = repo.readMergeCommitMsg();
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_MSG, e),
e);
}
}
} else if (state == RepositoryState.SAFE && message == null) {
try {
message = repo.readSquashCommitMsg();
if (message != null) repo.writeSquashCommitMsg(null /* delete */);
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_MSG, e),
e);
}
}
if (message == null)
// as long as we don't support -C option we have to have
// an explicit message
throw new NoMessageException(JGitText.get().commitMessageNotSpecified);
}
private int maxTimeWanted(final Collection<Ref> wants) {
int maxTime = 0;
for (final Ref r : wants) {
try {
final RevObject obj = walk.parseAny(r.getObjectId());
if (obj instanceof RevCommit) {
final int cTime = ((RevCommit) obj).getCommitTime();
if (maxTime < cTime) maxTime = cTime;
}
} catch (IOException error) {
// We don't have it, but we want to fetch (thus fixing error).
}
}
return maxTime;
}
/**
* Sets default values for not explicitly specified options. Then validates that all required data
* has been provided.
*
* @param state the state of the repository we are working on
* @param rw the RevWalk to use
* @throws NoMessageException if the commit message has not been specified
*/
private void processOptions(RepositoryState state, RevWalk rw) throws NoMessageException {
if (committer == null) committer = new PersonIdent(repo);
if (author == null && !amend) author = committer;
// when doing a merge commit parse MERGE_HEAD and MERGE_MSG files
if (state == RepositoryState.MERGING_RESOLVED || isMergeDuringRebase(state)) {
try {
parents = repo.readMergeHeads();
if (parents != null)
for (int i = 0; i < parents.size(); i++) {
RevObject ro = rw.parseAny(parents.get(i));
if (ro instanceof RevTag) parents.set(i, rw.peel(ro));
}
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_HEAD, e),
e);
}
if (message == null) {
try {
message = repo.readMergeCommitMsg();
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_MSG, e),
e);
}
}
} else if (state == RepositoryState.SAFE && message == null) {
try {
message = repo.readSquashCommitMsg();
if (message != null) repo.writeSquashCommitMsg(null /* delete */);
} catch (IOException e) {
throw new JGitInternalException(
MessageFormat.format(
JGitText.get().exceptionOccurredDuringReadingOfGIT_DIR, Constants.MERGE_MSG, e),
e);
}
}
if (message == null)
// as long as we don't support -C option we have to have
// an explicit message
throw new NoMessageException(JGitText.get().commitMessageNotSpecified);
}
@Override
protected Result doUpdate(Result desiredResult) throws IOException {
ObjectIdRef newRef;
RevObject obj = rw.parseAny(getNewObjectId());
if (obj instanceof RevTag) {
newRef =
new ObjectIdRef.PeeledTag(
Storage.PACKED, dstRef.getName(), getNewObjectId(), rw.peel(obj).copy());
} else {
newRef = new ObjectIdRef.PeeledNonTag(Storage.PACKED, dstRef.getName(), getNewObjectId());
}
if (getRefDatabase().compareAndPut(dstRef, newRef)) {
getRefDatabase().stored(newRef);
return desiredResult;
}
return Result.LOCK_FAILURE;
}
/**
* Merge together two or more tree-ish objects.
*
* <p>Any tree-ish may be supplied as inputs. Commits and/or tags pointing at trees or commits may
* be passed as input objects.
*
* @param tips source trees to be combined together. The merge base is not included in this set.
* @return true if the merge was completed without conflicts; false if the merge strategy cannot
* handle this merge or there were conflicts preventing it from automatically resolving all
* paths.
* @throws IncorrectObjectTypeException one of the input objects is not a commit, but the strategy
* requires it to be a commit.
* @throws IOException one or more sources could not be read, or outputs could not be written to
* the Repository.
*/
public boolean merge(final AnyObjectId[] tips) throws IOException {
sourceObjects = new RevObject[tips.length];
for (int i = 0; i < tips.length; i++) sourceObjects[i] = walk.parseAny(tips[i]);
sourceCommits = new RevCommit[sourceObjects.length];
for (int i = 0; i < sourceObjects.length; i++) {
try {
sourceCommits[i] = walk.parseCommit(sourceObjects[i]);
} catch (IncorrectObjectTypeException err) {
sourceCommits[i] = null;
}
}
sourceTrees = new RevTree[sourceObjects.length];
for (int i = 0; i < sourceObjects.length; i++)
sourceTrees[i] = walk.parseTree(sourceObjects[i]);
return mergeImpl();
}
@Override
protected void run() throws Exception {
Git git = new Git(db);
if (tagName != null) {
TagCommand command = git.tag().setForceUpdate(force).setMessage(message).setName(tagName);
if (object != null) {
RevWalk walk = new RevWalk(db);
command.setObjectId(walk.parseAny(object));
}
command.call();
} else {
ListTagCommand command = git.tagList();
List<RevTag> list = command.call();
for (RevTag revTag : list) {
out.println(revTag.getTagName());
}
}
}
/**
* Create pack basing on fixed objects list, then precisely verify content. No delta reuse here.
*
* @throws IOException
* @throws MissingObjectException
*/
public void testWritePack3() throws MissingObjectException, IOException {
writer.setReuseDeltas(false);
final ObjectId forcedOrder[] =
new ObjectId[] {
ObjectId.fromString("82c6b885ff600be425b4ea96dee75dca255b69e7"),
ObjectId.fromString("c59759f143fb1fe21c197981df75a7ee00290799"),
ObjectId.fromString("aabf2ffaec9b497f0950352b3e582d73035c2035"),
ObjectId.fromString("902d5476fa249b7abc9d84c611577a81381f0327"),
ObjectId.fromString("5b6e7c66c276e7610d4a73c70ec1a1f7c1003259"),
ObjectId.fromString("6ff87c4664981e4397625791c8ea3bbb5f2279a3")
};
final RevWalk parser = new RevWalk(db);
final RevObject forcedOrderRevs[] = new RevObject[forcedOrder.length];
for (int i = 0; i < forcedOrder.length; i++)
forcedOrderRevs[i] = parser.parseAny(forcedOrder[i]);
createVerifyOpenPack(Arrays.asList(forcedOrderRevs).iterator());
assertEquals(forcedOrder.length, writer.getObjectsNumber());
verifyObjectsOrder(forcedOrder);
assertEquals("ed3f96b8327c7c66b0f8f70056129f0769323d86", writer.computeName().name());
}
protected static RevCommit resolveCommitIdByTagName(Repository repository, String tagName)
throws IOException, GitAPIException {
if (tagName == null || tagName.isEmpty()) return null;
RevCommit revCommit = null;
Map<String, Ref> tagMap = repository.getTags();
Ref ref = tagMap.get(tagName);
if (ref != null) {
RevWalk walk = new RevWalk(repository);
// some reduce memory effors as described in jgit user guide
walk.setRetainBody(false);
ObjectId from;
from = repository.resolve("refs/heads/master");
if (from == null) {
Git git = new Git(repository);
String lastTagName = git.describe().call();
from = repository.resolve("refs/tags/" + lastTagName);
}
ObjectId to = repository.resolve("refs/remotes/origin/master");
if (from == null) {
throw new IllegalStateException("cannot determinate start commit");
}
walk.markStart(walk.parseCommit(from));
walk.markUninteresting(walk.parseCommit(to));
try {
RevObject revObject = walk.parseAny(ref.getObjectId());
if (revObject != null) {
revCommit = walk.parseCommit(revObject.getId());
}
} finally {
walk.close();
}
}
return revCommit;
}
private void validateCommands() {
for (final ReceiveCommand cmd : commands) {
final Ref ref = cmd.getRef();
if (cmd.getResult() != Result.NOT_ATTEMPTED) continue;
if (cmd.getType() == ReceiveCommand.Type.DELETE && !isAllowDeletes()) {
// Deletes are not supported on this repository.
//
cmd.setResult(Result.REJECTED_NODELETE);
continue;
}
if (cmd.getType() == ReceiveCommand.Type.CREATE) {
if (!isAllowCreates()) {
cmd.setResult(Result.REJECTED_NOCREATE);
continue;
}
if (ref != null && !isAllowNonFastForwards()) {
// Creation over an existing ref is certainly not going
// to be a fast-forward update. We can reject it early.
//
cmd.setResult(Result.REJECTED_NONFASTFORWARD);
continue;
}
if (ref != null) {
// A well behaved client shouldn't have sent us a
// create command for a ref we advertised to it.
//
cmd.setResult(
Result.REJECTED_OTHER_REASON,
MessageFormat.format(JGitText.get().refAlreadyExists, ref));
continue;
}
}
if (cmd.getType() == ReceiveCommand.Type.DELETE
&& ref != null
&& !ObjectId.zeroId().equals(cmd.getOldId())
&& !ref.getObjectId().equals(cmd.getOldId())) {
// Delete commands can be sent with the old id matching our
// advertised value, *OR* with the old id being 0{40}. Any
// other requested old id is invalid.
//
cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().invalidOldIdSent);
continue;
}
if (cmd.getType() == ReceiveCommand.Type.UPDATE) {
if (ref == null) {
// The ref must have been advertised in order to be updated.
//
cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().noSuchRef);
continue;
}
if (!ref.getObjectId().equals(cmd.getOldId())) {
// A properly functioning client will send the same
// object id we advertised.
//
cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().invalidOldIdSent);
continue;
}
// Is this possibly a non-fast-forward style update?
//
RevObject oldObj, newObj;
try {
oldObj = walk.parseAny(cmd.getOldId());
} catch (IOException e) {
cmd.setResult(Result.REJECTED_MISSING_OBJECT, cmd.getOldId().name());
continue;
}
try {
newObj = walk.parseAny(cmd.getNewId());
} catch (IOException e) {
cmd.setResult(Result.REJECTED_MISSING_OBJECT, cmd.getNewId().name());
continue;
}
if (oldObj instanceof RevCommit && newObj instanceof RevCommit) {
try {
if (!walk.isMergedInto((RevCommit) oldObj, (RevCommit) newObj)) {
cmd.setType(ReceiveCommand.Type.UPDATE_NONFASTFORWARD);
}
} catch (MissingObjectException e) {
cmd.setResult(Result.REJECTED_MISSING_OBJECT, e.getMessage());
} catch (IOException e) {
cmd.setResult(Result.REJECTED_OTHER_REASON);
}
} else {
cmd.setType(ReceiveCommand.Type.UPDATE_NONFASTFORWARD);
}
}
if (!cmd.getRefName().startsWith(Constants.R_REFS)
|| !Repository.isValidRefName(cmd.getRefName())) {
cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().funnyRefname);
}
}
}
private void negotiate(final ProgressMonitor monitor) throws IOException, CancelledException {
final MutableObjectId ackId = new MutableObjectId();
int resultsPending = 0;
int havesSent = 0;
int havesSinceLastContinue = 0;
boolean receivedContinue = false;
boolean receivedAck = false;
if (statelessRPC) state.writeTo(out, null);
negotiateBegin();
SEND_HAVES:
for (; ; ) {
final RevCommit c = walk.next();
if (c == null) break SEND_HAVES;
pckOut.writeString("have " + c.getId().name() + "\n");
havesSent++;
havesSinceLastContinue++;
if ((31 & havesSent) != 0) {
// We group the have lines into blocks of 32, each marked
// with a flush (aka end). This one is within a block so
// continue with another have line.
//
continue;
}
if (monitor.isCancelled()) throw new CancelledException();
pckOut.end();
resultsPending++; // Each end will cause a result to come back.
if (havesSent == 32 && !statelessRPC) {
// On the first block we race ahead and try to send
// more of the second block while waiting for the
// remote to respond to our first block request.
// This keeps us one block ahead of the peer.
//
continue;
}
READ_RESULT:
for (; ; ) {
final AckNackResult anr = pckIn.readACK(ackId);
switch (anr) {
case NAK:
// More have lines are necessary to compute the
// pack on the remote side. Keep doing that.
//
resultsPending--;
break READ_RESULT;
case ACK:
// The remote side is happy and knows exactly what
// to send us. There is no further negotiation and
// we can break out immediately.
//
multiAck = MultiAck.OFF;
resultsPending = 0;
receivedAck = true;
if (statelessRPC) state.writeTo(out, null);
break SEND_HAVES;
case ACK_CONTINUE:
case ACK_COMMON:
case ACK_READY:
// The server knows this commit (ackId). We don't
// need to send any further along its ancestry, but
// we need to continue to talk about other parts of
// our local history.
//
markCommon(walk.parseAny(ackId), anr);
receivedAck = true;
receivedContinue = true;
havesSinceLastContinue = 0;
break;
}
if (monitor.isCancelled()) throw new CancelledException();
}
if (statelessRPC) state.writeTo(out, null);
if (receivedContinue && havesSinceLastContinue > MAX_HAVES) {
// Our history must be really different from the remote's.
// We just sent a whole slew of have lines, and it did not
// recognize any of them. Avoid sending our entire history
// to them by giving up early.
//
break SEND_HAVES;
}
}
// Tell the remote side we have run out of things to talk about.
//
if (monitor.isCancelled()) throw new CancelledException();
// When statelessRPC is true we should always leave SEND_HAVES
// loop above while in the middle of a request. This allows us
// to just write done immediately.
//
pckOut.writeString("done\n");
pckOut.flush();
if (!receivedAck) {
// Apparently if we have never received an ACK earlier
// there is one more result expected from the done we
// just sent to the remote.
//
multiAck = MultiAck.OFF;
resultsPending++;
}
READ_RESULT:
while (resultsPending > 0 || multiAck != MultiAck.OFF) {
final AckNackResult anr = pckIn.readACK(ackId);
resultsPending--;
switch (anr) {
case NAK:
// A NAK is a response to an end we queued earlier
// we eat it and look for another ACK/NAK message.
//
break;
case ACK:
// A solitary ACK at this point means the remote won't
// speak anymore, but is going to send us a pack now.
//
break READ_RESULT;
case ACK_CONTINUE:
case ACK_COMMON:
case ACK_READY:
// We will expect a normal ACK to break out of the loop.
//
multiAck = MultiAck.CONTINUE;
break;
}
if (monitor.isCancelled()) throw new CancelledException();
}
}
