public new Dictionary <int, byte[]> ReadOffsetData(BinaryReader dbReader, long pos)
{
Dictionary <int, byte[]> CopyTable = new Dictionary <int, byte[]>();
List <Tuple <int, short> > offsetmap = new List <Tuple <int, short> >();
Dictionary <int, OffsetDuplicate> firstindex = new Dictionary <int, OffsetDuplicate>();
Dictionary <int, List <int> > Copies = new Dictionary <int, List <int> >();
columnOffsets = new List <int>();
recordOffsets = new List <int>();
int[] m_indexes = null;
// OffsetTable
if (HasOffsetTable && OffsetTableOffset > 0)
{
dbReader.BaseStream.Position = OffsetTableOffset;
for (int i = 0; i < (MaxId - MinId + 1); i++)
{
int offset = dbReader.ReadInt32();
short length = dbReader.ReadInt16();
if (offset == 0 || length == 0)
{
continue;
}
// special case, may contain duplicates in the offset map that we don't want
if (CopyTableSize == 0)
{
if (!firstindex.ContainsKey(offset))
{
firstindex.Add(offset, new OffsetDuplicate(offsetmap.Count, firstindex.Count));
}
else
{
continue;
}
}
offsetmap.Add(new Tuple <int, short>(offset, length));
}
}
// IndexTable
if (HasIndexTable)
{
m_indexes = new int[RecordCount];
for (int i = 0; i < RecordCount; i++)
{
m_indexes[i] = dbReader.ReadInt32();
}
}
// Copytable
if (CopyTableSize > 0)
{
long end = dbReader.BaseStream.Position + CopyTableSize;
while (dbReader.BaseStream.Position < end)
{
int id = dbReader.ReadInt32();
int idcopy = dbReader.ReadInt32();
if (!Copies.ContainsKey(idcopy))
{
Copies.Add(idcopy, new List <int>());
}
Copies[idcopy].Add(id);
}
}
// Relationships
if (RelationshipDataSize > 0)
{
RelationShipData = new RelationShipData()
{
Records = dbReader.ReadUInt32(),
MinId = dbReader.ReadUInt32(),
MaxId = dbReader.ReadUInt32(),
Entries = new Dictionary <uint, byte[]>()
};
for (int i = 0; i < RelationShipData.Records; i++)
{
byte[] foreignKey = dbReader.ReadBytes(4);
uint index = dbReader.ReadUInt32();
// has duplicates just like the copy table does... why?
if (!RelationShipData.Entries.ContainsKey(index))
{
RelationShipData.Entries.Add(index, foreignKey);
}
}
FieldStructure.Add(new FieldStructureEntry(0, 0));
ColumnMeta.Add(new ColumnStructureEntry());
}
// Record Data
BitStream bitStream = new BitStream(recordData);
for (int i = 0; i < RecordCount; i++)
{
int id = 0;
if (HasOffsetTable && HasIndexTable)
{
id = m_indexes[CopyTable.Count];
var map = offsetmap[i];
if (CopyTableSize == 0 && firstindex[map.Item1].HiddenIndex != i) //Ignore duplicates
{
continue;
}
dbReader.BaseStream.Position = map.Item1;
byte[] data = dbReader.ReadBytes(map.Item2);
IEnumerable <byte> recordbytes = BitConverter.GetBytes(id).Concat(data);
// append relationship id
if (RelationShipData != null)
{
// seen cases of missing indicies
if (RelationShipData.Entries.TryGetValue((uint)i, out byte[] foreignData))