Exemplo n.º 1
0
        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);
        }
Exemplo n.º 2
0
        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];
                    }
                }
            }
        }