public void Test4KBlocks()
{
Stream inp = _samples.OpenResourceAsStream("BlockSize4096.zvi");
try
{
// First up, check that we can process the header properly
HeaderBlock header_block = new HeaderBlock(inp);
POIFSBigBlockSize bigBlockSize = header_block.BigBlockSize;
Assert.AreEqual(4096, bigBlockSize.GetBigBlockSize());
// Check the fat info looks sane
Assert.AreEqual(1, header_block.BATArray.Length);
Assert.AreEqual(1, header_block.BATCount);
Assert.AreEqual(0, header_block.XBATCount);
// Now check we can get the basic fat
RawDataBlockList data_blocks = new RawDataBlockList(inp, bigBlockSize);
Assert.AreEqual(15, data_blocks.BlockCount());
// Now try and open properly
POIFSFileSystem fs = new POIFSFileSystem(
_samples.OpenResourceAsStream("BlockSize4096.zvi")
);
Assert.IsTrue(fs.Root.EntryCount > 3);
// Check we can get at all the contents
CheckAllDirectoryContents(fs.Root);
// Finally, check we can do a similar 512byte one too
fs = new POIFSFileSystem(
_samples.OpenResourceAsStream("BlockSize512.zvi")
);
Assert.IsTrue(fs.Root.EntryCount > 3);
CheckAllDirectoryContents(fs.Root);
}
finally
{
inp.Close();
}
}
public void TestBATandXBAT()
{
byte[] hugeStream = new byte[8 * 1024 * 1024];
POIFSFileSystem fs = new POIFSFileSystem();
fs.Root.CreateDocument("BIG", new MemoryStream(hugeStream));
MemoryStream baos = new MemoryStream();
fs.WriteFileSystem(baos);
byte[] fsData = baos.ToArray();
// Check the header was written properly
Stream inp = new MemoryStream(fsData);
HeaderBlock header = new HeaderBlock(inp);
Assert.AreEqual(109 + 21, header.BATCount);
Assert.AreEqual(1, header.XBATCount);
ByteBuffer xbatData = ByteBuffer.CreateBuffer(512);
xbatData.Write(fsData, (1 + header.XBATIndex) * 512, 512);
xbatData.Position = 0;
BATBlock xbat = BATBlock.CreateBATBlock(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS, xbatData);
for (int i = 0; i < 21; i++)
{
Assert.IsTrue(xbat.GetValueAt(i) != POIFSConstants.UNUSED_BLOCK);
}
for (int i = 21; i < 127; i++)
Assert.AreEqual(POIFSConstants.UNUSED_BLOCK, xbat.GetValueAt(i));
Assert.AreEqual(POIFSConstants.END_OF_CHAIN, xbat.GetValueAt(127));
RawDataBlockList blockList = new RawDataBlockList(inp, POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
Assert.AreEqual(fsData.Length / 512, blockList.BlockCount() + 1);
new BlockAllocationTableReader(header.BigBlockSize,
header.BATCount,
header.BATArray,
header.XBATCount,
header.XBATIndex,
blockList);
Assert.AreEqual(fsData.Length / 512, blockList.BlockCount() + 1);
//fs = null;
//fs = new POIFSFileSystem(new MemoryStream(fsData));
//DirectoryNode root = fs.Root;
//Assert.AreEqual(1, root.EntryCount);
//DocumentNode big = (DocumentNode)root.GetEntry("BIG");
//Assert.AreEqual(hugeStream.Length, big.Size);
}
