private HeapOnNodeBlockData GetBlockDataUnbuffered(int blockIndex)
{
DataBlock block = DataTree.GetDataBlock(blockIndex);
if (blockIndex == 0)
{
HeapOnNodeFirstBlockData heapFirstBlock = new HeapOnNodeFirstBlockData(block.Data);
return(heapFirstBlock);
}
else
{
// HNBITMAPHDR appears at data block 8 (zero-based) and thereafter every 128 blocks.
// (that is, data block 8, data block 136, data block 264, and so on).
if (blockIndex % 128 == 8)
{
HeapOnNodeBitmapBlockData bitmapBlock = new HeapOnNodeBitmapBlockData(block.Data);
return(bitmapBlock);
}
else
{
HeapOnNodePageBlockData pageBlock = new HeapOnNodePageBlockData(block.Data);
return(pageBlock);
}
}
}
public void UpdateHeapHeader(HeapOnNodeHeader header)
{
HeapOnNodeFirstBlockData blockData = (HeapOnNodeFirstBlockData)GetBlockData(0);
blockData.HeapHeader = header;
UpdateBuffer(0, blockData);
}
public static HeapOnNode CreateNewHeap(PSTFile file)
{
DataTree dataTree = new DataTree(file);
HeapOnNodeFirstBlockData blockData = new HeapOnNodeFirstBlockData();
dataTree.UpdateDataBlock(0, blockData.GetBytes());
// now the data tree contains a valid HN
HeapOnNode heap = new HeapOnNode(dataTree);
return(heap);
}
