public override Block Create(uint block)
{
if (!vhdFile.BlockAllocationTable.HasData(block))
{
if (cachedBlock == null || cachedBlock.BlockIndex != block)
{
cachedBlock = parentBlockFactory.Create(block);
}
return(cachedBlock);
}
if (cachedBlock == null || cachedBlock.BlockIndex != block)
{
IndexRange logicalRange = IndexRange.FromLength(block * GetBlockSize(), this.GetBlockSize());
if (ExtraBlockIndex.HasValue && block == ExtraBlockIndex)
{
long startIndex = block * GetBlockSize();
long size = vhdFile.Footer.CurrentSize - startIndex;
logicalRange = IndexRange.FromLength(startIndex, size);
}
cachedBlock = new Block(this)
{
BlockIndex = block,
VhdUniqueId = this.vhdFile.Footer.UniqueId,
LogicalRange = logicalRange,
BitMap = bitMapFactory.Create(block),
Empty = false
};
}
return(cachedBlock);
}
public IGroup Create(ISetting setting, IBlockPattern blockPattern, IGroupPattern groupPattern)
{
IGroup group = new Group(setting);
for (int i = 0; i < groupPattern.Patterns[0].Length; i++)
{
IBlock block = _blockFactory.Create(setting, blockPattern.Types[i], groupPattern.Patterns[0][i]);
group.AddBlock(block);
}
group.SetPattern(groupPattern.Patterns);
return(group);
}
private bool TryFindNextBlock(OngoingBlock ongoingBlock, out Block nextBlock)
{
var rnd = Guid.NewGuid().ToString("D");
nextBlock = _blockFactory.Create(ongoingBlock.Index, ongoingBlock.Node, rnd, ongoingBlock.PreviousHash, ongoingBlock.Transactions);
Trace.TraceInformation("[node]\t\tCreated next block candidate {0}", nextBlock);
return(_hashFilter.IsSatisfy(nextBlock.Signature, _nodeSettings.NextHashFactor));
}
public override Block Create(uint block)
{
if (!vhdFile.BlockAllocationTable.HasData(block))
{
if (cachedBlock == null || cachedBlock.BlockIndex != block)
{
cachedBlock = parentBlockFactory.Create(block);
}
return(cachedBlock);
}
if (cachedBlock == null || cachedBlock.BlockIndex != block)
{
cachedBlock = new Block(this)
{
BlockIndex = block,
VhdUniqueId = this.vhdFile.Footer.UniqueId,
LogicalRange = IndexRange.FromLength(block * GetBlockSize(), vhdFile.Header.BlockSize),
BitMap = bitMapFactory.Create(block),
Empty = false
};
}
return(cachedBlock);
}
/// <summary>
/// Reads the specified number of bytes from the current position.
/// </summary>
public override int Read(byte[] buffer, int offset, int count)
{
if (count <= 0)
{
return(0);
}
try
{
var rangeToRead = IndexRange.FromLength(this.position, count);
int writtenCount = 0;
if (fileDataRange.Intersection(rangeToRead) == null)
{
int readCountFromFooter;
if (TryReadFromFooter(rangeToRead, buffer, offset, out readCountFromFooter))
{
writtenCount += readCountFromFooter;
}
return(writtenCount);
}
rangeToRead = fileDataRange.Intersection(rangeToRead);
var startingBlock = ByteToBlock(rangeToRead.StartIndex);
var endingBlock = ByteToBlock(rangeToRead.EndIndex);
for (var blockIndex = startingBlock; blockIndex <= endingBlock; blockIndex++)
{
var currentBlock = blockFactory.Create(blockIndex);
var rangeToReadInBlock = currentBlock.LogicalRange.Intersection(rangeToRead);
var copyStartIndex = rangeToReadInBlock.StartIndex % blockFactory.GetBlockSize();
Buffer.BlockCopy(currentBlock.Data, (int)copyStartIndex, buffer, offset + writtenCount, (int)rangeToReadInBlock.Length);
writtenCount += (int)rangeToReadInBlock.Length;
}
this.position += writtenCount;
return(writtenCount);
}
catch (Exception e)
{
throw new VhdParsingException("Invalid or Corrupted VHD file", e);
}
}
public void ParserShouldCallSBlockFactoryWhenParsingStatements()
{
IList <StatementBase> input = new List <StatementBase>();
input.Add(StatementCreator.CreateMemberStatement("_someString"));
IBlockFactory factory = Mocker.StrictMock <IBlockFactory>();
Expect.Call(factory.Create(input)).Return(new [] { new BlockBaseImpl(input) }).Repeat.Once();
StubBlockFactoryProvider provider = new StubBlockFactoryProvider(factory);
CalidusBlockParser parser = new CalidusBlockParser(provider);
Mocker.ReplayAll();
parser.Parse(input);
Mocker.VerifyAll();
}