private void WriteIndices(BinaryWriter writer, WDB2RowSerializer <T> serializer, uint layoutHash)
{
int min = serializer.Records.Keys.Min();
int max = serializer.Records.Keys.Max();
writer.Write(min);
writer.Write(max);
writer.Write(layoutHash);
writer.Write(0); // CopyTableSize
int index = 0;
for (int i = min; i <= max; i++)
{
if (serializer.StringLengths.ContainsKey(i))
{
writer.Write(++index);
writer.Write(serializer.StringLengths[i]);
}
else
{
writer.Write(0);
writer.Write((ushort)0);
}
}
}
private const uint WDB2FmtSig = 0x32424457; // WDB2
public WDB2Writer(WDB2Reader reader, IDictionary <int, T> storage, Stream stream) : base(reader)
{
WDB2RowSerializer <T> serializer = new WDB2RowSerializer <T>(this);
serializer.Serialize(storage);
RecordsCount = storage.Count;
using (var writer = new BinaryWriter(stream))
{
writer.Write(WDB2FmtSig);
writer.Write(RecordsCount);
writer.Write(FieldsCount);
writer.Write(RecordSize);
writer.Write(StringTableSize);
writer.Write(reader.TableHash);
writer.Write(reader.Build);
writer.Write((uint)DateTimeOffset.UtcNow.ToUnixTimeSeconds());
if (storage.Count == 0)
{
return;
}
// Extended header
if (reader.Build > 12880)
{
if (reader.MaxIndex == 0)
{
writer.Write(0);
writer.Write(0);
writer.Write(reader.LayoutHash);
writer.Write(0); // CopyTableSize
}
else
{
WriteIndices(writer, serializer, reader.LayoutHash);
}
}
foreach (var record in serializer.Records)
{
record.Value.CopyTo(writer.BaseStream);
}
foreach (var str in StringTable)
{
writer.WriteCString(str.Key);
}
}
}
