private void putLooseRef(LooseRef @ref)
{
RefList <LooseRef> cList, nList;
do
{
cList = looseRefs.get();
nList = cList.put(@ref);
} while (!looseRefs.compareAndSet(cList, nList));
modCnt.incrementAndGet();
fireRefsChanged();
}
public override Ref peel(Ref @ref)
{
Ref leaf = @ref.getLeaf();
if (leaf.isPeeled() || leaf.getObjectId() == null)
{
return(@ref);
}
RevWalk.RevWalk rw = new RevWalk.RevWalk(getRepository());
RevObject obj = rw.parseAny(leaf.getObjectId());
ObjectIdRef newLeaf;
if (obj is RevTag)
{
do
{
obj = rw.parseAny(((RevTag)obj).getObject());
} while (obj is RevTag);
newLeaf = new PeeledTag(leaf.getStorage(), leaf
.getName(), leaf.getObjectId(), obj.Copy());
}
else
{
newLeaf = new PeeledNonTag(leaf.getStorage(), leaf
.getName(), leaf.getObjectId());
}
// Try to remember this peeling in the cache, so we don't have to do
// it again in the future, but only if the reference is unchanged.
if (leaf.getStorage().IsLoose)
{
RefList <LooseRef> curList = looseRefs.get();
int idx = curList.find(leaf.getName());
if (0 <= idx && curList.get(idx) == leaf)
{
LooseRef asPeeled = ((LooseRef)leaf).peel(newLeaf);
RefList <LooseRef> newList = curList.set(idx, asPeeled);
looseRefs.compareAndSet(curList, newList);
}
}
return(recreate(@ref, newLeaf));
}
private Ref readRef(string name, RefList <Ref> packed)
{
RefList <LooseRef> curList = looseRefs.get();
int idx = curList.find(name);
if (0 <= idx)
{
LooseRef o = curList.get(idx);
LooseRef n = scanRef(o, name);
if (n == null)
{
if (looseRefs.compareAndSet(curList, curList.remove(idx)))
{
modCnt.incrementAndGet();
}
return(packed.get(name));
}
if (o == n)
{
return(n);
}
if (looseRefs.compareAndSet(curList, curList.set(idx, n)))
{
modCnt.incrementAndGet();
}
return(n);
}
LooseRef n2 = scanRef(null, name);
if (n2 == null)
{
return(packed.get(name));
}
if (looseRefs.compareAndSet(curList, curList.add(idx, n2)))
{
modCnt.incrementAndGet();
}
return(n2);
}
private LooseRef scanRef(LooseRef @ref, string name)
{
FileInfo path = fileFor(name);
long modified = 0;
modified = path.lastModified();
if (@ref != null)
{
if (@ref.getLastModified() == modified)
{
return(@ref);
}
name = @ref.getName();
}
else if (modified == 0)
{
return(null);
}
byte[] buf;
try
{
buf = IO.ReadFully(path, 4096);
}
catch (FileNotFoundException)
{
return(null); // doesn't exist; not a reference.
}
catch (DirectoryNotFoundException)
{
return(null); // doesn't exist; not a reference.
}
int n = buf.Length;
if (n == 0)
{
return(null); // empty file; not a reference.
}
if (isSymRef(buf, n))
{
// trim trailing whitespace
while (0 < n && Char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
if (n < 6)
{
string content = RawParseUtils.decode(buf, 0, n);
throw new IOException("Not a ref: " + name + ": " + content);
}
string target = RawParseUtils.decode(buf, 5, n);
return(newSymbolicRef(modified, name, target));
}
if (n < Constants.OBJECT_ID_STRING_LENGTH)
{
return(null); // impossibly short object identifier; not a reference.
}
ObjectId id;
try
{
id = ObjectId.FromString(buf, 0);
}
catch (ArgumentException)
{
while (0 < n && Char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
string content = RawParseUtils.decode(buf, 0, n);
throw new IOException("Not a ref: " + name + ": " + content);
}
return(new LooseUnpeeled(modified, name, id));
}
