private BinaryData EncodeSLBlock(SLEntry[] blockEntries)
{
var generator = BinaryDataGenerator.New();
generator.Append((byte)0x02);
generator.Append((byte)0x00);
generator.Append((short)blockEntries.Length);
generator.Append(BinaryData.OfSize(4));
Array.ForEach(blockEntries, e => generator = generator.Append(e, slEntryEncoder));
return(generator.GetData());
}
private FPMap CreateFPMap(long mapOffset)
{
var data = BinaryData.OfSize(496, 0xFF);
return
(new FPMap(
data,
new PageTrailer(
Constants.ptypeFPMap,
Constants.ptypeFPMap,
0x0000,
(int)Crc32.ComputeCrc32(data.Value),
BID.OfValue(mapOffset))));
}
public BID Allocate(IB blockOffset, int rawDataSize, bool internalBlock)
{
var bidIndex = headerUsageProvider.GetHeader().NextBID;
headerUsageProvider.Use(header => header.IncrementBIDIndexForDataBlocks());
var blockId = internalBlock ? BID.ForInternalBlock(bidIndex) : BID.ForExternalBlock(bidIndex);
allocatedBlockBTreeEntries.Add(
new LBBTEntry(
BREF.OfValue(blockId, blockOffset),
rawDataSize,
numberOfReferencesToThisBlock: 2,
padding: BinaryData.OfSize(4)));
return(blockId);
}
public InternalDataBlock Create(
IB blockOffset,
BID blockId,
BlockIdsWithTotalNumberOfBytesInReferencedBlocks data)
{
var encodedExternalBlockIds = data.BlockIds.Encode(bidEncoder);
return
(new InternalDataBlock(
0x01,
blockLevel,
data.BlockIds.Length,
data.TotalNumberOfBytesInReferencedBlocks,
encodedExternalBlockIds,
BinaryData.OfSize(Utilities.GetInternalDataBlockPaddingSize(encodedExternalBlockIds.Length)),
new BlockTrailer(
encodedExternalBlockIds.Length + 8,
BlockSignature.Calculate(blockOffset, blockId),
Crc32.ComputeCrc32(GetDataToCalculateCrc32(encodedExternalBlockIds, data.BlockIds.Length, data.TotalNumberOfBytesInReferencedBlocks)),
blockId)));
}
