/// <exception cref="NGit.Api.Errors.RefNotFoundException">
/// if the old branch can not be found (branch with provided old
/// name does not exist or old name resolves to a tag)
/// </exception>
/// <exception cref="NGit.Api.Errors.InvalidRefNameException">
/// if the provided new name is <code>null</code> or otherwise
/// invalid
/// </exception>
/// <exception cref="NGit.Api.Errors.RefAlreadyExistsException">if a branch with the new name already exists
/// </exception>
/// <exception cref="NGit.Api.Errors.DetachedHeadException">
/// if rename is tried without specifying the old name and HEAD
/// is detached
/// </exception>
/// <exception cref="NGit.Api.Errors.GitAPIException"></exception>
public override Ref Call()
{
CheckCallable();
if (newName == null)
{
throw new InvalidRefNameException(MessageFormat.Format(JGitText.Get().branchNameInvalid
, "<null>"));
}
try
{
string fullOldName;
string fullNewName;
if (repo.GetRef(newName) != null)
{
throw new RefAlreadyExistsException(MessageFormat.Format(JGitText.Get().refAlreadyExists1
, newName));
}
if (oldName != null)
{
Ref @ref = repo.GetRef(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 (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);
RefUpdate.Result renameResult = rename.Rename();
SetCallable(false);
if (RefUpdate.Result.RENAMED != renameResult)
{
throw new JGitInternalException(MessageFormat.Format(JGitText.Get().renameBranchUnexpectedResult
, renameResult.ToString()));
}
if (fullNewName.StartsWith(Constants.R_HEADS))
{
string shortOldName = Sharpen.Runtime.Substring(fullOldName, Constants.R_HEADS.Length
);
StoredConfig repoConfig = repo.GetConfig();
// Copy all configuration values over to the new branch
foreach (string name in 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.Array.Copy(existing, 0, newValues, 0, existing.Length);
System.Array.Copy(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.GetRef(newName);
if (resultRef == null)
{
throw new JGitInternalException(JGitText.Get().renameBranchFailedUnknownReason);
}
return(resultRef);
}
catch (IOException ioe)
{
throw new JGitInternalException(ioe.Message, ioe);
}
}