private T ReadValue <T>(Guid itemId, bool isUser, Reader <T> reader)
{
MetadataEntryKey key = new MetadataEntryKey(itemId, isUser);
MetadataEntry entry;
if (_table.Entries.TryGetValue(key, out entry))
{
_regionStream.Position = entry.Offset;
byte[] data = Utilities.ReadFully(_regionStream, Marshal.SizeOf(typeof(T)));
return(reader(data, 0));
}
return(default(T));
}
private T ReadStruct <T>(Guid itemId, bool isUser)
where T : IByteArraySerializable, new()
{
MetadataEntryKey key = new MetadataEntryKey(itemId, isUser);
MetadataEntry entry;
if (_table.Entries.TryGetValue(key, out entry))
{
_regionStream.Position = entry.Offset;
return(Utilities.ReadStruct <T>(_regionStream));
}
return(default(T));
}
public int ReadFrom(byte[] buffer, int offset)
{
_headerData = new byte[32];
Array.Copy(buffer, offset, _headerData, 0, 32);
Signature = Utilities.ToUInt64LittleEndian(_headerData, 0);
EntryCount = Utilities.ToUInt16LittleEndian(_headerData, 10);
Entries = new Dictionary <MetadataEntryKey, MetadataEntry>();
if (IsValid)
{
for (int i = 0; i < EntryCount; ++i)
{
MetadataEntry entry = Utilities.ToStruct <MetadataEntry>(buffer, offset + 32 + (i * 32));
Entries[MetadataEntryKey.FromEntry(entry)] = entry;
}
}
return(FixedSize);
}