private IEnumerable <ItemInfo> EnumHierarchyItems(IVsHierarchy hierarchy, uint itemId, int level, string project, TinyList <string> logicalPath)
{
var currentName = hierarchy.GetProp <string>(itemId, __VSHPROPID.VSHPROPID_Name);
// Enumerate nested
var nested = hierarchy.GetNested(itemId);
if (nested != null)
{
if (level == 1)
{
project = currentName;
}
foreach (var item in EnumHierarchyItems(nested.Item1, nested.Item2, level, project, logicalPath))
{
yield return(item);
}
yield break;
}
if (SkipItem(currentName))
{
yield break;
}
yield return(new ItemInfo {
Name = currentName,
ProjectName = project,
IconIndex = IconCache.Add(hierarchy, itemId),
LogicalPath = logicalPath.Foldr(new StringBuilder(), (s, b) => b.Append('/')
.Append(s)).Append('/').Append(currentName).ToString(),
Path = (level > 0 && itemId != VSConstants.VSITEMID_NIL && itemId != VSConstants.VSITEMID_ROOT)
? hierarchy.GetCanonicalName(itemId) : null,
});
// Enumerate normal children
var hasSideEffects = hierarchy.GetProp <object>(itemId, __VSHPROPID.VSHPROPID_HasEnumerationSideEffects);
if (hasSideEffects as bool? == true)
{
// Enumerate slow
var path = hierarchy.GetCanonicalName(itemId).TrimEnd('/', '\\');
if (Directory.Exists(path))
{
if (!SkipItem(currentName))
{
foreach (var item in EnumDirectory(path, project, logicalPath))
{
yield return(item);
}
}
}
else
{
// TODO: notify user somehow
}
}
else
{
// Enumerate fast
// maybe use __VSHPROPID.VSHPROPID_FirstVisibleChild ?
var node = hierarchy.GetProp <object>(itemId, __VSHPROPID.VSHPROPID_FirstChild);
if (level > 1)
{
logicalPath = logicalPath.Cons(currentName);
}
while (node != null)
{
var nodeId = (uint)(int)node;
if (nodeId == VSConstants.VSITEMID_NIL)
{
break;
}
foreach (var item in EnumHierarchyItems(hierarchy, nodeId, level + 1, project, logicalPath))
{
yield return(item);
}
node = hierarchy.GetProp <object>(nodeId, __VSHPROPID.VSHPROPID_NextSibling);
}
}
}