static Dictionary <int, byte[]> ReadData(BinaryReader reader)
{
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, int> OffsetDuplicates = new Dictionary <int, int>();
Dictionary <int, List <int> > Copies = new Dictionary <int, List <int> >();
byte[] recordData;
if (Header.HasOffsetTable())
{
recordData = reader.ReadBytes((int)(Header.OffsetTableOffset - 84 - 4 * Header.FieldCount));
}
else
{
recordData = reader.ReadBytes((int)(Header.RecordCount * Header.RecordSize));
Array.Resize(ref recordData, recordData.Length + 8);
}
if (Header.StringTableSize != 0)
{
// string data
StringTable = new Dictionary <int, string>();
for (int i = 0; i < Header.StringTableSize;)
{
long oldPos = reader.BaseStream.Position;
StringTable[i] = reader.ReadCString();
i += (int)(reader.BaseStream.Position - oldPos);
}
}
int[] m_indexes = null;
// OffsetTable
if (Header.HasOffsetTable() && Header.OffsetTableOffset > 0)
{
reader.BaseStream.Position = Header.OffsetTableOffset;
for (int i = 0; i < (Header.MaxId - Header.MinId + 1); i++)
{
int offset = reader.ReadInt32();
short length = reader.ReadInt16();
if (offset == 0 || length == 0)
{
continue;
}
// special case, may contain duplicates in the offset map that we don't want
if (Header.CopyTableSize == 0)
{
if (!firstindex.ContainsKey(offset))
{
firstindex.Add(offset, new OffsetDuplicate(offsetmap.Count, firstindex.Count));
}
else
{
OffsetDuplicates.Add(Header.MinId + i, firstindex[offset].VisibleIndex);
}
}
offsetmap.Add(new Tuple <int, short>(offset, length));
}
}
// IndexTable
if (Header.HasIndexTable())
{
m_indexes = reader.ReadArray <int>(Header.RecordCount);
}
// Copytable
if (Header.CopyTableSize > 0)
{
long end = reader.BaseStream.Position + Header.CopyTableSize;
while (reader.BaseStream.Position < end)
{
int id = reader.ReadInt32();
int idcopy = reader.ReadInt32();
if (!Copies.ContainsKey(idcopy))
{
Copies.Add(idcopy, new List <int>());
}
Copies[idcopy].Add(id);
}
}
// ColumnMeta
ColumnMeta = new List <ColumnStructureEntry>();
if (Header.ColumnMetaSize != 0)
{
for (int i = 0; i < Header.FieldCount; i++)
{
var column = new ColumnStructureEntry()
{
RecordOffset = reader.ReadUInt16(),
Size = reader.ReadUInt16(),
AdditionalDataSize = reader.ReadUInt32(), // size of pallet / sparse values
CompressionType = (DB2ColumnCompression)reader.ReadUInt32(),
BitOffset = reader.ReadInt32(),
BitWidth = reader.ReadInt32(),
Cardinality = reader.ReadInt32()
};
// preload arraysizes
if (column.CompressionType == DB2ColumnCompression.None)
{
column.ArraySize = Math.Max(column.Size / FieldStructure[i].BitCount, 1);
}
else if (column.CompressionType == DB2ColumnCompression.PalletArray)
{
column.ArraySize = Math.Max(column.Cardinality, 1);
}
ColumnMeta.Add(column);
}
}
// Pallet values
for (int i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == DB2ColumnCompression.Pallet || ColumnMeta[i].CompressionType == DB2ColumnCompression.PalletArray)
{
int elements = (int)ColumnMeta[i].AdditionalDataSize / 4;
int cardinality = Math.Max(ColumnMeta[i].Cardinality, 1);
ColumnMeta[i].PalletValues = new List <byte[]>();
for (int j = 0; j < elements / cardinality; j++)
{
ColumnMeta[i].PalletValues.Add(reader.ReadBytes(cardinality * 4));
}
}
}
// Sparse values
for (int i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == DB2ColumnCompression.CommonData)
{
ColumnMeta[i].SparseValues = new Dictionary <int, byte[]>();
for (int j = 0; j < ColumnMeta[i].AdditionalDataSize / 8; j++)
{
ColumnMeta[i].SparseValues[reader.ReadInt32()] = reader.ReadBytes(4);
}
}
}
// Relationships
if (Header.RelationshipDataSize > 0)
{
RelationShipData = new RelationShipData()
{
Records = reader.ReadUInt32(),
MinId = reader.ReadUInt32(),
MaxId = reader.ReadUInt32(),
Entries = new Dictionary <uint, byte[]>()
};
for (int i = 0; i < RelationShipData.Records; i++)
{
byte[] foreignKey = reader.ReadBytes(4);
uint index = reader.ReadUInt32();
// has duplicates just like the copy table does... why?
if (!RelationShipData.Entries.ContainsKey(index))
{
RelationShipData.Entries.Add(index, foreignKey);
}
}
}
// Record Data
for (int i = 0; i < Header.RecordCount; i++)
{
int id = 0;
if (Header.HasOffsetTable() && Header.HasIndexTable())
{
id = m_indexes[CopyTable.Count];
var map = offsetmap[i];
if (Header.CopyTableSize == 0 && firstindex[map.Item1].HiddenIndex != i) // ignore duplicates
{
continue;
}
reader.BaseStream.Position = map.Item1;
byte[] data = reader.ReadBytes(map.Item2);
IEnumerable <byte> recordbytes = data;
// append relationship id
if (RelationShipData != null)
{
// seen cases of missing indicies
if (RelationShipData.Entries.TryGetValue((uint)i, out byte[] foreignData))
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))
public new Dictionary <int, byte[]> ReadOffsetData(BinaryReader dbReader, long pos)
{
var CopyTable = new Dictionary <int, byte[]>();
var offsetmap = new List <Tuple <int, short> >();
var firstindex = new Dictionary <int, OffsetDuplicate>();
var OffsetDuplicates = new Dictionary <int, int>();
var Copies = new Dictionary <int, List <int> >();
int[] m_indexes = null;
// OffsetTable
if (HasOffsetTable && OffsetTableOffset > 0)
{
dbReader.BaseStream.Position = OffsetTableOffset;
for (var 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
{
OffsetDuplicates.Add(MinId + i, firstindex[offset].VisibleIndex);
continue;
}
}
offsetmap.Add(new Tuple <int, short>(offset, length));
}
}
// IndexTable
if (HasIndexTable)
{
m_indexes = new int[RecordCount];
for (var 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);
}
}
// ColumnMeta
ColumnMeta = new List <ColumnStructureEntry>();
for (var i = 0; i < FieldCount; i++)
{
ColumnStructureEntry column = new ColumnStructureEntry
{
RecordOffset = dbReader.ReadUInt16(),
Size = dbReader.ReadUInt16(),
AdditionalDataSize = dbReader.ReadUInt32(), // size of pallet / sparse values
CompressionType = (CompressionType)dbReader.ReadUInt32(),
BitOffset = dbReader.ReadInt32(),
BitWidth = dbReader.ReadInt32(),
Cardinality = dbReader.ReadInt32()
};
// preload arraysizes
if (column.CompressionType == CompressionType.None)
{
column.ArraySize = Math.Max(column.Size / FieldStructure[i].BitCount, 1);
}
else if (column.CompressionType == CompressionType.PalletArray)
{
column.ArraySize = Math.Max(column.Cardinality, 1);
}
ColumnMeta.Add(column);
}
// Pallet values
for (var i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == CompressionType.Pallet ||
ColumnMeta[i].CompressionType == CompressionType.PalletArray)
{
int elements = (int)ColumnMeta[i].AdditionalDataSize / 4;
int cardinality = Math.Max(ColumnMeta[i].Cardinality, 1);
ColumnMeta[i].PalletValues = new List <byte[]>();
for (var j = 0; j < elements / cardinality; j++)
{
ColumnMeta[i].PalletValues.Add(dbReader.ReadBytes(cardinality * 4));
}
}
}
// Sparse values
for (var i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == CompressionType.Sparse)
{
ColumnMeta[i].SparseValues = new Dictionary <int, byte[]>();
for (var j = 0; j < ColumnMeta[i].AdditionalDataSize / 8; j++)
{
ColumnMeta[i].SparseValues[dbReader.ReadInt32()] = dbReader.ReadBytes(4);
}
}
}
// Relationships
if (RelationshipDataSize > 0)
{
RelationShipData = new RelationShipData
{
Records = dbReader.ReadUInt32(),
MinId = dbReader.ReadUInt32(),
MaxId = dbReader.ReadUInt32(),
Entries = new Dictionary <uint, byte[]>()
};
for (var 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(recordData);
for (var i = 0; i < RecordCount; i++)
{
var 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);
var 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))
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, int> OffsetDuplicates = new Dictionary <int, int>();
Dictionary <int, List <int> > Copies = new Dictionary <int, 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
{
OffsetDuplicates.Add(MinId + i, firstindex[offset].VisibleIndex);
}
}
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);
}
}
// ColumnMeta
ColumnMeta = new List <ColumnStructureEntry>();
for (int i = 0; i < FieldCount; i++)
{
var column = new ColumnStructureEntry()
{
RecordOffset = dbReader.ReadUInt16(),
Size = dbReader.ReadUInt16(),
AdditionalDataSize = dbReader.ReadUInt32(), // size of pallet / sparse values
CompressionType = (CompressionType)dbReader.ReadUInt32(),
BitOffset = dbReader.ReadInt32(),
BitWidth = dbReader.ReadInt32(),
Cardinality = dbReader.ReadInt32()
};
// preload arraysizes
if (column.CompressionType == CompressionType.None)
{
column.ArraySize = Math.Max(column.Size / FieldStructure[i].BitCount, 1);
}
else if (column.CompressionType == CompressionType.PalletArray)
{
column.ArraySize = Math.Max(column.Cardinality, 1);
}
ColumnMeta.Add(column);
}
// Pallet values
for (int i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == CompressionType.Pallet || ColumnMeta[i].CompressionType == CompressionType.PalletArray)
{
int elements = (int)ColumnMeta[i].AdditionalDataSize / 4;
int cardinality = Math.Max(ColumnMeta[i].Cardinality, 1);
ColumnMeta[i].PalletValues = new List <byte[]>();
for (int j = 0; j < elements / cardinality; j++)
{
ColumnMeta[i].PalletValues.Add(dbReader.ReadBytes(cardinality * 4));
}
}
}
// Sparse values
for (int i = 0; i < ColumnMeta.Count; i++)
{
if (ColumnMeta[i].CompressionType == CompressionType.Sparse)
{
ColumnMeta[i].SparseValues = new Dictionary <int, byte[]>();
for (int j = 0; j < ColumnMeta[i].AdditionalDataSize / 8; j++)
{
ColumnMeta[i].SparseValues[dbReader.ReadInt32()] = dbReader.ReadBytes(4);
}
}
}
// Relationships
if (RelationshipDataSize > 0)
{
RelationShipData = new RelationShipData()
{
Records = dbReader.ReadUInt32(),
MinId = dbReader.ReadUInt32(),
MaxId = dbReader.ReadUInt32(),
Entries = new List <RelationShipEntry>()
};
for (int i = 0; i < RelationShipData.Records; i++)
{
RelationShipData.Entries.Add(new RelationShipEntry(dbReader.ReadUInt32(), dbReader.ReadUInt32()));
}
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);
if (RelationShipData != null)
{
byte[] relation = BitConverter.GetBytes(RelationShipData.Entries.First(x => x.Index == i).Id);
recordbytes = recordbytes.Concat(relation);
}
CopyTable.Add(id, recordbytes.ToArray());
if (Copies.ContainsKey(id))
{
foreach (var copy in Copies[id])
{
CopyTable.Add(copy, BitConverter.GetBytes(copy).Concat(data).ToArray());
}
}
}
else
{
bitStream.Seek(i * RecordSize, 0);
int idOffset = 0;
List <byte> data = new List <byte>();
if (HasIndexTable)
{
id = m_indexes[i];
data.AddRange(BitConverter.GetBytes(id));
}
for (int f = 0; f < FieldCount; f++)
{
int bitOffset = ColumnMeta[f].BitOffset;
int bitWidth = ColumnMeta[f].BitWidth;
int cardinality = ColumnMeta[f].Cardinality;
uint palletIndex;
switch (ColumnMeta[f].CompressionType)
{
case CompressionType.None:
int bitSize = FieldStructure[f].BitCount;
if (!HasIndexTable && f == IdIndex)
{
idOffset = data.Count;
id = (int)bitStream.ReadUInt32(bitSize); // always read Ids as ints
data.AddRange(BitConverter.GetBytes(id));
}
else
{
for (int x = 0; x < ColumnMeta[f].ArraySize; x++)
{
data.AddRange(bitStream.ReadBytesPadded(bitSize));
}
}
break;
case CompressionType.Immediate:
if (!HasIndexTable && f == IdIndex)
{
idOffset = data.Count;
id = (int)bitStream.ReadUInt32(bitWidth); // always read Ids as ints
data.AddRange(BitConverter.GetBytes(id));
continue;
}
else
{
data.AddRange(bitStream.ReadBytesPadded(bitWidth));
}
break;
case CompressionType.Sparse:
if (ColumnMeta[f].SparseValues.TryGetValue(id, out byte[] valBytes))
