ObjectId treeId;
ResolveMerger m = (ResolveMerger) MergeStrategy.RESOLVE.newMerger(repo, true);
final ObjectInserter ins = repo.newObjectInserter();
try {
DirCache dc = DirCache.newInCore();
m.setDirCache(dc);
m.setObjectInserter(new ObjectInserter.Filter() {
@Override
protected ObjectInserter delegate() {
return ins;
}
@Override
public void flush() {
}
@Override
public void release() {
}
});
boolean couldMerge = false;
try {
couldMerge = m.merge(b.getParents());
} catch (IOException e) {
//
}
if (couldMerge) {
treeId = m.getResultTreeId();
} else {
RevCommit ours = b.getParent(0);
RevCommit theirs = b.getParent(1);
rw.parseBody(ours);
rw.parseBody(theirs);
String oursMsg = ours.getShortMessage();
String theirsMsg = theirs.getShortMessage();
String oursName = String.format("HEAD (%s %s)",
ours.abbreviate(6).name(),
oursMsg.substring(0, Math.min(oursMsg.length(), 60)));
String theirsName = String.format("BRANCH (%s %s)",
theirs.abbreviate(6).name(),
theirsMsg.substring(0, Math.min(theirsMsg.length(), 60)));
MergeFormatter fmt = new MergeFormatter();
Map<String, MergeResult<? extends Sequence>> r = m.getMergeResults();
Map<String, ObjectId> resolved = new HashMap<String, ObjectId>();
for (String path : r.keySet()) {
MergeResult<? extends Sequence> p = r.get(path);
TemporaryBuffer buf = new TemporaryBuffer.LocalFile(10 * 1024 * 1024);
try {
fmt.formatMerge(buf, p, "BASE", oursName, theirsName, "UTF-8");
buf.close();
InputStream in = buf.openInputStream();
try {
resolved.put(path, ins.insert(Constants.OBJ_BLOB, buf.length(), in));
} finally {
in.close();
}
} finally {
buf.destroy();
}
}
DirCacheBuilder builder = dc.builder();
int cnt = dc.getEntryCount();
for (int i = 0; i < cnt;) {
DirCacheEntry entry = dc.getEntry(i);
if (entry.getStage() == 0) {
builder.add(entry);
i++;
continue;
}
int next = dc.nextEntry(i);
String path = entry.getPathString();
DirCacheEntry res = new DirCacheEntry(path);
if (resolved.containsKey(path)) {
// For a file with content merge conflict that we produced a result
// above on, collapse the file down to a single stage 0 with just
// the blob content, and a randomly selected mode (the lowest stage,
// which should be the merge base, or ours).
res.setFileMode(entry.getFileMode());
res.setObjectId(resolved.get(path));
} else if (next == i + 1) {
// If there is exactly one stage present, shouldn't be a conflict...
res.setFileMode(entry.getFileMode());
res.setObjectId(entry.getObjectId());
} else if (next == i + 2) {
// Two stages suggests a delete/modify conflict. Pick the higher
// stage as the automatic result.
entry = dc.getEntry(i + 1);
res.setFileMode(entry.getFileMode());
res.setObjectId(entry.getObjectId());
} else { // 3 stage conflict, no resolve above
// Punt on the 3-stage conflict and show the base, for now.
res.setFileMode(entry.getFileMode());
res.setObjectId(entry.getObjectId());
}
builder.add(res);
i = next;
}
builder.finish();
treeId = dc.writeTree(ins);
}
ins.flush();
} finally {
ins.release();
}