/// <summary>
/// Return a list of those objects in the index which differ from whats in
/// HEAD
/// </summary>
/// <returns>a set of ObjectIds of changed objects in the index</returns>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
/// <exception cref="NGit.Errors.CorruptObjectException">NGit.Errors.CorruptObjectException
/// </exception>
/// <exception cref="NGit.Errors.NoWorkTreeException">NGit.Errors.NoWorkTreeException
/// </exception>
private ICollection <ObjectId> ListNonHEADIndexObjects()
{
RevWalk revWalk = null;
try
{
if (repo.GetIndexFile() == null)
{
return(Sharpen.Collections.EmptySet <ObjectId>());
}
}
catch (NoWorkTreeException)
{
return(Sharpen.Collections.EmptySet <ObjectId>());
}
TreeWalk treeWalk = new TreeWalk(repo);
try
{
treeWalk.AddTree(new DirCacheIterator(repo.ReadDirCache()));
ObjectId headID = repo.Resolve(Constants.HEAD);
if (headID != null)
{
revWalk = new RevWalk(repo);
treeWalk.AddTree(revWalk.ParseTree(headID));
revWalk.Dispose();
revWalk = null;
}
treeWalk.Filter = TreeFilter.ANY_DIFF;
treeWalk.Recursive = true;
ICollection <ObjectId> ret = new HashSet <ObjectId>();
while (treeWalk.Next())
{
ObjectId objectId = treeWalk.GetObjectId(0);
switch (treeWalk.GetRawMode(0) & FileMode.TYPE_MASK)
{
case FileMode.TYPE_MISSING:
case FileMode.TYPE_GITLINK:
{
continue;
goto case FileMode.TYPE_TREE;
}
case FileMode.TYPE_TREE:
case FileMode.TYPE_FILE:
case FileMode.TYPE_SYMLINK:
{
ret.AddItem(objectId);
continue;
goto default;
}
default:
{
throw new IOException(MessageFormat.Format(JGitText.Get().corruptObjectInvalidMode3
, string.Format("%o", Sharpen.Extensions.ValueOf(treeWalk.GetRawMode(0)), (objectId
== null) ? "null" : objectId.Name, treeWalk.PathString, repo.GetIndexFile())));
}
}
}
return(ret);
}
finally
{
if (revWalk != null)
{
revWalk.Dispose();
}
treeWalk.Release();
}
}
