private void ReadTable()
{
_entries.Clear();
_stream.Seek(-sizeof(uint), SeekOrigin.End);
_tableOffset = _reader.ReadUInt32();
_stream.Seek(_tableOffset, SeekOrigin.Begin);
var count = _reader.ReadUInt32();
while (count > 0)
{
var keyLength = _reader.ReadUInt16();
var entry = new ClusterEntry()
{
Key = _reader.ReadBytes(keyLength), Offset = _reader.ReadUInt32(), Length = _reader.ReadUInt32()
};
_entries[entry.Key] = entry;
count--;
}
}
public void Set(byte[] key, byte[] value)
{
ClusterEntry entry;
if (_entries.ContainsKey(key))
{
entry = _entries[key];
if (entry.Length <= value.Length)
{
_stream.Seek(entry.Offset, SeekOrigin.Begin);
_writer.Write(value);
return;
}
}
entry = new ClusterEntry()
{
Key = key, Length = (uint)value.Length, Offset = _freeOffset
};
_stream.Seek(entry.Offset, SeekOrigin.Begin);
_writer.Write(value);
_freeOffset += entry.Length;
}