private void PrepRecord()
{
// Ensure we have all INDEX attributes at hand
bool parseLists = false;
foreach (AttributeList list in MFTRecord.Attributes.OfType <AttributeList>())
{
foreach (AttributeListItem item in list.Items)
{
if (item.BaseFile != MFTRecord.FileReference &&
(item.Type == AttributeType.INDEX_ROOT || item.Type == AttributeType.INDEX_ALLOCATION))
{
// We need to parse lists
parseLists = true;
}
}
}
if (parseLists)
{
NTFSWrapper.ParseAttributeLists(MFTRecord);
}
// Get root
_indexRoot = MFTRecord.Attributes.OfType <AttributeIndexRoot>().Single(s => s.AttributeName == DirlistAttribName);
// Get allocations
_indexes = MFTRecord.Attributes.OfType <AttributeIndexAllocation>().Where(s => s.AttributeName == DirlistAttribName).ToArray();
foreach (AttributeIndexAllocation index in _indexes)
{
NTFSWrapper.ParseNonResidentAttribute(index);
}
// Get bitmap of allocations
// var bitmap = MFTRecord.Attributes.OfType<AttributeBitmap>().Single(s => s.AttributeName == DirlistAttribName);
}
private void PrepRecord()
{
// Ensure we have all INDEX attributes at hand
bool parseLists = false;
foreach (AttributeList list in MFTRecord.Attributes.OfType <AttributeList>())
{
foreach (AttributeListItem item in list.Items)
{
if (item.BaseFile != MFTRecord.FileReference &&
(item.Type == AttributeType.INDEX_ROOT || item.Type == AttributeType.INDEX_ALLOCATION))
{
// We need to parse lists
parseLists = true;
}
}
}
if (parseLists)
{
NTFSWrapper.ParseAttributeLists(MFTRecord);
}
bool containsItem = MFTRecord.Attributes.Any(s => s.AttributeName == DirlistAttribName);
if (containsItem)
{
IEnumerable <AttributeIndexRoot> matches = MFTRecord.Attributes.OfType <AttributeIndexRoot>().Where(s => s.AttributeName == DirlistAttribName);
if (!matches.Any()) // Does list contain any items?
{
return; // Bail if no IndexRoot Attributes where AttributeName == DirlistAttribName
}
// IEnumerable.Single(predicate) returns the single item that matches the predicate,
// and throws if the number of matches are not exactly one. That is, if it matches zero items or many items.
// In our case, the exception message was "Sequence contains no matching element", so it was empty.
//_indexRoot = MFTRecord.Attributes.OfType<AttributeIndexRoot>().Single(s => s.AttributeName == DirlistAttribName);
// First will return the first item in the list, ignoring the rest.
// It will throw if there is no items in the list, but wont if there are many.
_indexRoot = matches.First();
}
else
{
// No point in continuing in this case, as it will just waste time parsing IndexAllocations below,
// but never iterate them because _indexRoot == null
return;
//using (System.IO.StreamWriter w = System.IO.File.AppendText("D:\\Log\\faillog.txt"))
//{
// w.WriteLine("failed to get indexroot for mft number " + MFTRecord.MFTNumber.ToString());
//}
}
// Get allocations
_indexes = MFTRecord.Attributes.OfType <AttributeIndexAllocation>().Where(s => s.AttributeName == DirlistAttribName).ToArray();
foreach (AttributeIndexAllocation index in _indexes)
{
NTFSWrapper.ParseNonResidentAttribute(index);
}
// Get bitmap of allocations
// var bitmap = MFTRecord.Attributes.OfType<AttributeBitmap>().Single(s => s.AttributeName == DirlistAttribName);
}
