private TreeFormatter createTreeFormatter(
Map<SubtreeConfig, RevCommit> parentCommits, String commitMessage)
throws MissingObjectException, IncorrectObjectTypeException, CorruptObjectException,
IOException {
TreeWalk treeWalk = new TreeWalk(repository);
try {
treeWalk.setRecursive(false);
addTrees(parentCommits, treeWalk);
TreeFormatter treeFormatter = new TreeFormatter();
while (treeWalk.next()) {
AbstractTreeIterator iterator = getSingleTreeIterator(treeWalk, commitMessage);
if (iterator == null) {
throw new IllegalStateException(
"Tree walker did not return a single tree (should not happen): "
+ treeWalk.getPathString());
}
treeFormatter.append(
iterator.getEntryPathBuffer(),
0,
iterator.getEntryPathLength(),
iterator.getEntryFileMode(),
iterator.getEntryObjectId());
}
return treeFormatter;
} finally {
treeWalk.release();
}
}
@NotNull
private static ObjectId createFirstRevision(@NotNull Repository repository) throws IOException {
final ObjectInserter inserter = repository.newObjectInserter();
// Create commit tree.
final TreeFormatter rootBuilder = new TreeFormatter();
rootBuilder.append(
".gitattributes", FileMode.REGULAR_FILE, insertFile(inserter, "example/_gitattributes"));
new ObjectChecker().checkTree(rootBuilder.toByteArray());
final ObjectId rootId = inserter.insert(rootBuilder);
// Create first commit with message.
final CommitBuilder commitBuilder = new CommitBuilder();
commitBuilder.setAuthor(new PersonIdent("", "", 0, 0));
commitBuilder.setCommitter(new PersonIdent("", "", 0, 0));
commitBuilder.setMessage("Initial commit");
commitBuilder.setTreeId(rootId);
final ObjectId commitId = inserter.insert(commitBuilder);
inserter.flush();
return commitId;
}