public VFSFileStream(VFSFile file, BlockParser blockParser, FileSystemOptions options, BlockAllocation blockAllocation, BlockManipulator blockManipulator, Persistence.Persistence persistence)
{
_file = file;
_blockParser = blockParser;
_options = options;
_blockAllocation = blockAllocation;
_blockManipulator = blockManipulator;
_persistence = persistence;
_writeBuffer = new byte[_options.BlockSize];
}
public void TestNameTooLong()
{
var f = new VFSFile("0123456789");
try
{
var o1 = TestHelper.CreateFileSystemOptions("");
o1.NameLength = f.Name.Length;
var p1 = new BlockParser(o1);
p1.NodeToBytes(f);
}
catch (VFSException)
{
Assert.Fail("Exception unexpected yet");
}
var o2 = TestHelper.CreateFileSystemOptions("");
o2.NameLength = f.Name.Length - 1;
var p2 = new BlockParser(o2);
p2.NodeToBytes(f);
}
public void TestWriteFileBlock()
{
var options = TestHelper.CreateFileSystemOptions("");
var b = new BlockParser(options);
var f = new VFSFile("αaαaαaαablubα");
var bb = b.NodeToBytes(f);
Assert.AreEqual(0x2, bb[0]);
}
private void ExportFile(VFSFile file, string destination, CallbacksBase exportCallbacks)
{
if (exportCallbacks.ShouldAbort()) return;
EnsureParentDirectoryExists(destination);
using (var stream = File.OpenWrite(destination))
{
using (var reader = DecorateToHostStream(
new VFSFileStream(file, _blockParser, _options, _blockAllocation, _blockManipulator, _persistence)))
{
var buffer = new byte[_options.BlockSize];
int read;
while ((read = reader.Read(buffer, 0, _options.BlockSize)) > 0)
{
stream.Write(buffer, 0, read);
}
}
}
exportCallbacks.CurrentlyProcessed++;
}
private VFSFile CreateFile(string source, Folder destination, string name)
{
var file = new VFSFile(name) { Parent = destination, BlockNumber = _blockAllocation.Allocate() };
using (var b = new BinaryReader(File.OpenRead(source)))
using (var w = DecorateToVFSStream(new VFSFileStream(file, _blockParser, _options, _blockAllocation, _blockManipulator, _persistence)))
{
byte[] block;
while ((block = b.ReadBytes(_options.BlockSize)).Length > 0)
{
w.Write(block, 0, block.Length);
}
}
//Note: we could save some metadata too..
return file;
}
private void CopyFile(VFSFile fileToCopy, Folder destination, string name, CallbacksBase copyCallbacks)
{
if (copyCallbacks.ShouldAbort()) return;
CheckName(name);
var newFile = new VFSFile(name)
{
Parent = destination,
BlockNumber = _blockAllocation.Allocate(),
LastBlockSize = fileToCopy.LastBlockSize,
IndirectNodeNumber = fileToCopy.IndirectNodeNumber,
BlocksCount = fileToCopy.BlocksCount,
PredecessorBlockNr = fileToCopy.BlockNumber,
Version = NextVersion
};
_persistence.Persist(newFile);
copyCallbacks.CurrentlyProcessed++;
ArchiveAndReplaceRoot(destination, null, newFile);
}
