/// <exception cref="System.IO.IOException"></exception>
/// <exception cref="NGit.Api.Errors.NoHeadException"></exception>
/// <exception cref="NGit.Api.Errors.JGitInternalException"></exception>
private RevCommit CheckoutCurrentHead()
{
ObjectId headTree = repo.Resolve(Constants.HEAD + "^{tree}");
if (headTree == null)
{
throw new NoHeadException(JGitText.Get().cannotRebaseWithoutCurrentHead);
}
DirCache dc = repo.LockDirCache();
try
{
DirCacheCheckout dco = new DirCacheCheckout(repo, dc, headTree);
dco.SetFailOnConflict(false);
bool needsDeleteFiles = dco.Checkout();
if (needsDeleteFiles)
{
IList <string> fileList = dco.GetToBeDeleted();
foreach (string filePath in fileList)
{
FilePath fileToDelete = new FilePath(repo.WorkTree, filePath);
if (fileToDelete.Exists())
{
FileUtils.Delete(fileToDelete, FileUtils.RECURSIVE | FileUtils.RETRY);
}
}
}
}
finally
{
dc.Unlock();
}
RevWalk rw = new RevWalk(repo);
RevCommit commit = rw.ParseCommit(repo.Resolve(Constants.HEAD));
rw.Release();
return(commit);
}
/// <exception cref="NGit.Api.Errors.RefAlreadyExistsException">
/// when trying to create (without force) a branch with a name
/// that already exists
/// </exception>
/// <exception cref="NGit.Api.Errors.RefNotFoundException">if the start point or branch can not be found
/// </exception>
/// <exception cref="NGit.Api.Errors.InvalidRefNameException">
/// if the provided name is <code>null</code> or otherwise
/// invalid
/// </exception>
/// <returns>the newly created branch</returns>
/// <exception cref="NGit.Api.Errors.JGitInternalException"></exception>
public override Ref Call()
{
CheckCallable();
ProcessOptions();
try
{
if (createBranch)
{
Git git = new Git(repo);
CreateBranchCommand command = git.BranchCreate();
command.SetName(name);
command.SetStartPoint(GetStartPoint().Name);
if (upstreamMode != null)
{
command.SetUpstreamMode(upstreamMode);
}
command.Call();
}
Ref headRef = repo.GetRef(Constants.HEAD);
string refLogMessage = "checkout: moving from " + headRef.GetTarget().GetName();
ObjectId branch = repo.Resolve(name);
if (branch == null)
{
throw new RefNotFoundException(MessageFormat.Format(JGitText.Get().refNotResolved
, name));
}
RevWalk revWalk = new RevWalk(repo);
AnyObjectId headId = headRef.GetObjectId();
RevCommit headCommit = headId == null ? null : revWalk.ParseCommit(headId);
RevCommit newCommit = revWalk.ParseCommit(branch);
RevTree headTree = headCommit == null ? null : headCommit.Tree;
DirCacheCheckout dco = new DirCacheCheckout(repo, headTree, repo.LockDirCache(),
newCommit.Tree);
dco.SetFailOnConflict(true);
try
{
dco.Checkout();
}
catch (NGit.Errors.CheckoutConflictException e)
{
status = new CheckoutResult(CheckoutResult.Status.CONFLICTS, dco.GetConflicts());
throw;
}
Ref @ref = repo.GetRef(name);
if (@ref != null && [email protected]().StartsWith(Constants.R_HEADS))
{
@ref = null;
}
RefUpdate refUpdate = repo.UpdateRef(Constants.HEAD, @ref == null);
refUpdate.SetForceUpdate(force);
refUpdate.SetRefLogMessage(refLogMessage + " to " + newCommit.GetName(), false);
RefUpdate.Result updateResult;
if (@ref != null)
{
updateResult = refUpdate.Link(@ref.GetName());
}
else
{
refUpdate.SetNewObjectId(newCommit);
updateResult = refUpdate.ForceUpdate();
}
SetCallable(false);
bool ok = false;
switch (updateResult)
{
case RefUpdate.Result.NEW:
{
ok = true;
break;
}
case RefUpdate.Result.NO_CHANGE:
case RefUpdate.Result.FAST_FORWARD:
case RefUpdate.Result.FORCED:
{
ok = true;
break;
}
default:
{
break;
break;
}
}
if (!ok)
{
throw new JGitInternalException(MessageFormat.Format(JGitText.Get().checkoutUnexpectedResult
, updateResult.ToString()));
}
if (!dco.GetToBeDeleted().IsEmpty())
{
status = new CheckoutResult(CheckoutResult.Status.NONDELETED, dco.GetToBeDeleted(
));
}
else
{
status = CheckoutResult.OK_RESULT;
}
return(@ref);
}
catch (IOException ioe)
{
throw new JGitInternalException(ioe.Message, ioe);
}
finally
{
if (status == null)
{
status = CheckoutResult.ERROR_RESULT;
}
}
}