final byte[] loadCanonical(final RevWalk walk)
throws IOException, MissingObjectException, IncorrectObjectTypeException,
CorruptObjectException {
final ObjectLoader ldr = walk.db.openObject(walk.curs, this);
if (ldr == null) throw new MissingObjectException(this, getType());
final byte[] data = ldr.getCachedBytes();
if (getType() != ldr.getType()) throw new IncorrectObjectTypeException(this, getType());
return data;
}
/**
* Gets the type of the object with the specified ID (either a tree, tag, blob, or commit).
*
* @param id the object ID
* @return the object type, one of the {@code OBJ_*} constants in the {@link Constants} class.
*/
public int typeOfObject(ObjectId id) {
ObjectReader reader = repository.newObjectReader();
try {
ObjectLoader loader = reader.open(id);
return loader.getType();
} catch (Exception e) {
return Constants.OBJ_BAD;
} finally {
reader.release();
}
}
private static void copy(TemporaryBuffer.Heap tinyPack, ObjectLoader ldr) throws IOException {
final byte[] buf = new byte[64];
final byte[] content = ldr.getCachedBytes();
int dataLength = content.length;
int nextLength = dataLength >>> 4;
int size = 0;
buf[size++] =
(byte) ((nextLength > 0 ? 0x80 : 0x00) | (ldr.getType() << 4) | (dataLength & 0x0F));
dataLength = nextLength;
while (dataLength > 0) {
nextLength >>>= 7;
buf[size++] = (byte) ((nextLength > 0 ? 0x80 : 0x00) | (dataLength & 0x7F));
dataLength = nextLength;
}
tinyPack.write(buf, 0, size);
deflate(tinyPack, content);
}
public static GitObject createGitObject(RepositoryData repositoryData, String hash)
throws MissingObjectException, IOException {
Repository repository = repositoryData.getRepository();
ObjectId id = repository.resolve(hash);
ObjectLoader loader = repository.open(id);
GitObject object = null;
switch (loader.getType()) {
case Constants.OBJ_COMMIT:
object = new Commit(hash, new String(loader.getCachedBytes()));
break;
case Constants.OBJ_TREE:
object = new Tree(hash, loader.getBytes());
break;
case Constants.OBJ_BLOB:
object = new Blob(hash, new String(loader.getCachedBytes()));
break;
case Constants.OBJ_TAG:
object = new Tag(hash, new String(loader.getCachedBytes()));
break;
}
object.setRepositoryData(repositoryData);
return object;
}
/**
* Push a candidate object onto the generator's traversal stack.
*
* <p>Candidates should be pushed in history order from oldest-to-newest. Applications should push
* the starting commit first, then the index revision (if the index is interesting), and finally
* the working tree copy (if the working tree is interesting).
*
* @param description description of the blob revision, such as "Working Tree".
* @param id may be a commit or a blob.
* @return {@code this}
* @throws IOException the repository cannot be read.
*/
public BlameGenerator push(String description, AnyObjectId id) throws IOException {
ObjectLoader ldr = reader.open(id);
if (ldr.getType() == OBJ_BLOB) {
if (description == null) description = JGitText.get().blameNotCommittedYet;
BlobCandidate c = new BlobCandidate(description, resultPath);
c.sourceBlob = id.toObjectId();
c.sourceText = new RawText(ldr.getCachedBytes(Integer.MAX_VALUE));
c.regionList = new Region(0, 0, c.sourceText.size());
remaining = c.sourceText.size();
push(c);
return this;
}
RevCommit commit = revPool.parseCommit(id);
if (!find(commit, resultPath)) return this;
Candidate c = new Candidate(commit, resultPath);
c.sourceBlob = idBuf.toObjectId();
c.loadText(reader);
c.regionList = new Region(0, 0, c.sourceText.size());
remaining = c.sourceText.size();
push(c);
return this;
}
