public T GetField <T>(int field, int arrayIndex = 0)
{
DB2Meta meta = m_reader.Meta[field];
if (meta.Bits != 0x00 && meta.Bits != 0x08 && meta.Bits != 0x10 && meta.Bits != 0x18 && meta.Bits != -32)
{
throw new Exception("Unknown meta.Flags");
}
int bytesCount = (32 - meta.Bits) >> 3;
TypeCode code = Type.GetTypeCode(typeof(T));
object value = null;
switch (code)
{
case TypeCode.Byte:
if (meta.Bits != 0x18)
{
throw new Exception("TypeCode.Byte Unknown meta.Bits");
}
value = m_data[meta.Offset + bytesCount * arrayIndex];
break;
case TypeCode.SByte:
if (meta.Bits != 0x18)
{
throw new Exception("TypeCode.SByte Unknown meta.Bits");
}
value = (sbyte)m_data[meta.Offset + bytesCount * arrayIndex];
break;
case TypeCode.Int16:
if (meta.Bits != 0x10)
{
throw new Exception("TypeCode.Int16 Unknown meta.Bits");
}
value = BitConverter.ToInt16(m_data, meta.Offset + bytesCount * arrayIndex);
break;
case TypeCode.UInt16:
if (meta.Bits != 0x10)
{
throw new Exception("TypeCode.UInt16 Unknown meta.Bits");
}
value = BitConverter.ToUInt16(m_data, meta.Offset + bytesCount * arrayIndex);
break;
case TypeCode.Int32:
byte[] b1 = new byte[4];
Array.Copy(m_data, meta.Offset + bytesCount * arrayIndex, b1, 0, bytesCount);
value = BitConverter.ToInt32(b1, 0);
break;
case TypeCode.UInt32:
byte[] b2 = new byte[4];
Array.Copy(m_data, meta.Offset + bytesCount * arrayIndex, b2, 0, bytesCount);
value = BitConverter.ToUInt32(b2, 0);
break;
case TypeCode.Int64:
byte[] b3 = new byte[8];
Array.Copy(m_data, meta.Offset + bytesCount * arrayIndex, b3, 0, bytesCount);
value = BitConverter.ToInt64(b3, 0);
break;
case TypeCode.UInt64:
byte[] b4 = new byte[8];
Array.Copy(m_data, meta.Offset + bytesCount * arrayIndex, b4, 0, bytesCount);
value = BitConverter.ToUInt64(b4, 0);
break;
case TypeCode.String:
if (meta.Bits != 0x00)
{
throw new Exception("TypeCode.String Unknown meta.Bits");
}
byte[] b5 = new byte[4];
Array.Copy(m_data, meta.Offset + bytesCount * arrayIndex, b5, 0, bytesCount);
int start = BitConverter.ToInt32(b5, 0), len = 0;
while (m_reader.StringTable[start + len] != 0)
{
len++;
}
value = Encoding.UTF8.GetString(m_reader.StringTable, start, len);
break;
case TypeCode.Single:
if (meta.Bits != 0x00)
{
throw new Exception("TypeCode.Single Unknown meta.Bits");
}
value = BitConverter.ToSingle(m_data, meta.Offset + bytesCount * arrayIndex);
break;
default:
throw new Exception("Unknown TypeCode " + code);
}
return((T)value);
}
public DB6Reader(Stream stream)
{
using (var reader = new BinaryReader(stream, Encoding.UTF8))
{
if (reader.BaseStream.Length < HeaderSize)
{
throw new InvalidDataException(String.Format("DB6 file is corrupted!"));
}
uint magic = reader.ReadUInt32();
if (magic != DB6FmtSig)
{
throw new InvalidDataException(String.Format("DB6 file is corrupted!"));
}
RecordsCount = reader.ReadInt32();
FieldsCount = reader.ReadInt32();
RecordSize = reader.ReadInt32();
StringTableSize = reader.ReadInt32();
uint tableHash = reader.ReadUInt32();
uint layoutHash = reader.ReadUInt32();
MinIndex = reader.ReadInt32();
MaxIndex = reader.ReadInt32();
int locale = reader.ReadInt32();
int copyTableSize = reader.ReadInt32();
int flags = reader.ReadUInt16();
int idIndex = reader.ReadUInt16();
int totalFieldsCount = reader.ReadInt32();
int unk2 = reader.ReadInt32(); // size of "common" data I guess
bool isSparse = (flags & 0x1) != 0;
bool hasIndex = (flags & 0x4) != 0;
m_meta = new DB2Meta[FieldsCount];
for (int i = 0; i < m_meta.Length; i++)
{
m_meta[i] = new DB2Meta();
m_meta[i].Bits = reader.ReadInt16();
m_meta[i].Offset = reader.ReadInt16();
}
DB6Row[] m_rows = new DB6Row[RecordsCount];
for (int i = 0; i < RecordsCount; i++)
{
m_rows[i] = new DB6Row(this, reader.ReadBytes(RecordSize));
}
m_stringTable = reader.ReadBytes(StringTableSize);
if (isSparse)
{
// code...
throw new Exception("can't do sparse table");
}
if (hasIndex)
{
for (int i = 0; i < RecordsCount; i++)
{
int id = reader.ReadInt32();
m_index[id] = m_rows[i];
}
}
else
{
for (int i = 0; i < RecordsCount; i++)
{
int id = m_rows[i].Data.Skip(m_meta[idIndex].Offset).Take((32 - m_meta[idIndex].Bits) >> 3).Select((b, k) => b << k * 8).Sum();
m_index[id] = m_rows[i];
}
}
if (copyTableSize > 0)
{
int copyCount = copyTableSize / 8;
for (int i = 0; i < copyCount; i++)
{
int newId = reader.ReadInt32();
int oldId = reader.ReadInt32();
m_index[newId] = m_index[oldId];
}
}
}
}
