/// <exception cref="System.IO.IOException"></exception>
public override IDictionary <string, Ref> GetRefs(string prefix)
{
RefList <Ref> packed = GetPackedRefs();
RefList <RefDirectory.LooseRef> oldLoose = looseRefs.Get();
RefDirectory.LooseScanner scan = new RefDirectory.LooseScanner(this, oldLoose);
scan.Scan(prefix);
RefList <RefDirectory.LooseRef> loose;
if (scan.newLoose != null)
{
scan.newLoose.Sort();
loose = scan.newLoose.ToRefList();
if (looseRefs.CompareAndSet(oldLoose, loose))
{
modCnt.IncrementAndGet();
}
}
else
{
loose = oldLoose;
}
FireRefsChanged();
RefListBuilder <Ref> symbolic = scan.symbolic;
for (int idx = 0; idx < symbolic.Size();)
{
Ref symbolicRef = symbolic.Get(idx);
Ref resolvedRef = Resolve(symbolicRef, 0, prefix, loose, packed);
if (resolvedRef != null && resolvedRef.GetObjectId() != null)
{
symbolic.Set(idx, resolvedRef);
idx++;
}
else
{
// A broken symbolic reference, we have to drop it from the
// collections the client is about to receive. Should be a
// rare occurrence so pay a copy penalty.
symbolic.Remove(idx);
int toRemove = loose.Find(symbolicRef.GetName());
if (0 <= toRemove)
{
loose = loose.Remove(toRemove);
}
}
}
symbolic.Sort();
return(new RefMap(prefix, packed, Upcast(loose), symbolic.ToRefList()));
}
private RefList <RefDirectory.LooseRef> GetLooseRefs()
{
RefList <RefDirectory.LooseRef> oldLoose = looseRefs.Get();
RefDirectory.LooseScanner scan = new RefDirectory.LooseScanner(this, oldLoose);
scan.Scan(ALL);
RefList <RefDirectory.LooseRef> loose;
if (scan.newLoose != null)
{
loose = scan.newLoose.ToRefList();
if (looseRefs.CompareAndSet(oldLoose, loose))
{
modCnt.IncrementAndGet();
}
}
else
{
loose = oldLoose;
}
return(loose);
}