private String getObjectIdOfCommit() throws Exception {
String branch = repository.getFullBranch();
if (ObjectId.isId(branch)) return branch;
if (branch.startsWith(Constants.R_REFS)) {
RevCommit commit = revWalk.parseCommit(repository.resolve(branch));
return commit.getId().getName();
}
if (branch.startsWith(Constants.R_TAGS)) {
RevTag tag = revWalk.parseTag(repository.resolve(branch));
return tag.getObject().getId().name();
}
throw new IllegalStateException("Can't resolve commit");
}
/**
* Returns the name of the remote repository for the given branch. If there's no current branch or
* no remote configured to it, the default remote is returned ("origin").
*
* @param branch the branch
* @param repository the repository
* @return the remote name
*/
private static String getRemoteName(String branch, Repository repository) {
String remoteName = null;
if (ObjectId.isId(branch)) {
remoteName = Constants.DEFAULT_REMOTE_NAME;
} else {
remoteName =
repository
.getConfig()
.getString(
ConfigConstants.CONFIG_BRANCH_SECTION,
branch,
ConfigConstants.CONFIG_REMOTE_SECTION);
if (remoteName == null) {
remoteName = Constants.DEFAULT_REMOTE_NAME;
}
}
return remoteName;
}
private Ref readRef(final TreeMap<String, Ref> avail, final String rn)
throws TransportException {
final String s;
String ref = ROOT_DIR + rn;
try {
final BufferedReader br = openReader(ref);
try {
s = br.readLine();
} finally {
br.close();
}
} catch (FileNotFoundException noRef) {
return null;
} catch (IOException err) {
throw new TransportException(getURI(), "read " + ref, err);
}
if (s == null) throw new TransportException(getURI(), "Empty ref: " + rn);
if (s.startsWith("ref: ")) {
final String target = s.substring("ref: ".length());
Ref r = avail.get(target);
if (r == null) r = readRef(avail, target);
if (r == null) return null;
r = new Ref(r.getStorage(), rn, r.getObjectId(), r.getPeeledObjectId(), r.isPeeled());
avail.put(r.getName(), r);
return r;
}
if (ObjectId.isId(s)) {
final Ref r = new Ref(loose(avail.get(rn)), rn, ObjectId.fromString(s));
avail.put(r.getName(), r);
return r;
}
throw new TransportException(getURI(), "Bad ref: " + rn + ": " + s);
}
/**
* @throws RefNotFoundException if the old branch can not be found (branch with provided old name
* does not exist or old name resolves to a tag)
* @throws InvalidRefNameException if the provided new name is <code>null</code> or otherwise
* invalid
* @throws RefAlreadyExistsException if a branch with the new name already exists
* @throws DetachedHeadException if rename is tried without specifying the old name and HEAD is
* detached
*/
public Ref call()
throws GitAPIException, RefNotFoundException, InvalidRefNameException,
RefAlreadyExistsException, DetachedHeadException {
checkCallable();
if (newName == null)
throw new InvalidRefNameException(
MessageFormat.format(JGitText.get().branchNameInvalid, "<null>")); // $NON-NLS-1$
try {
String fullOldName;
String fullNewName;
if (repo.findRef(newName) != null)
throw new RefAlreadyExistsException(
MessageFormat.format(JGitText.get().refAlreadyExists1, newName));
if (oldName != null) {
Ref ref = repo.findRef(oldName);
if (ref == null)
throw new RefNotFoundException(
MessageFormat.format(JGitText.get().refNotResolved, oldName));
if (ref.getName().startsWith(Constants.R_TAGS))
throw new RefNotFoundException(
MessageFormat.format(JGitText.get().renameBranchFailedBecauseTag, oldName));
fullOldName = ref.getName();
} else {
fullOldName = repo.getFullBranch();
if (fullOldName == null) {
throw new NoHeadException(JGitText.get().invalidRepositoryStateNoHead);
}
if (ObjectId.isId(fullOldName)) throw new DetachedHeadException();
}
if (fullOldName.startsWith(Constants.R_REMOTES)) fullNewName = Constants.R_REMOTES + newName;
else {
fullNewName = Constants.R_HEADS + newName;
}
if (!Repository.isValidRefName(fullNewName))
throw new InvalidRefNameException(
MessageFormat.format(JGitText.get().branchNameInvalid, fullNewName));
RefRename rename = repo.renameRef(fullOldName, fullNewName);
Result renameResult = rename.rename();
setCallable(false);
if (Result.RENAMED != renameResult)
throw new JGitInternalException(
MessageFormat.format(JGitText.get().renameBranchUnexpectedResult, renameResult.name()));
if (fullNewName.startsWith(Constants.R_HEADS)) {
String shortOldName = fullOldName.substring(Constants.R_HEADS.length());
final StoredConfig repoConfig = repo.getConfig();
// Copy all configuration values over to the new branch
for (String name :
repoConfig.getNames(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName)) {
String[] values =
repoConfig.getStringList(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName, name);
if (values.length == 0) continue;
// Keep any existing values already configured for the
// new branch name
String[] existing =
repoConfig.getStringList(ConfigConstants.CONFIG_BRANCH_SECTION, newName, name);
if (existing.length > 0) {
String[] newValues = new String[values.length + existing.length];
System.arraycopy(existing, 0, newValues, 0, existing.length);
System.arraycopy(values, 0, newValues, existing.length, values.length);
values = newValues;
}
repoConfig.setStringList(
ConfigConstants.CONFIG_BRANCH_SECTION, newName, name, Arrays.asList(values));
}
repoConfig.unsetSection(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName);
repoConfig.save();
}
Ref resultRef = repo.findRef(newName);
if (resultRef == null)
throw new JGitInternalException(JGitText.get().renameBranchFailedUnknownReason);
return resultRef;
} catch (IOException ioe) {
throw new JGitInternalException(ioe.getMessage(), ioe);
}
}