public void Write(int index, byte[] data)
{
if (mSector.Type != SECTOR.SectorType.FILE_NODE)
{
throw new Exception("Cannot write data to node type " + mSector.Type.ToString());
}
//load blocks
LoadBlocks();
// extend file with more sectors if needed
FILE_NODE fileSector = mSector as FILE_NODE;
int fileFileLength = Math.Max(fileSector.FileSize, index + data.Length);
VirtualBlock.ExtendBlocks(mDrive, mBlocks, fileSector.FileSize, fileFileLength);
//write data to the blocks
VirtualBlock.WriteBlockData(mDrive, mBlocks, index, data);
//wrte out data
CommitBlocks();
// write out new file size to disk
if (fileFileLength != fileSector.FileSize)
{
fileSector.FileSize = fileFileLength;
Drive.Disk.WriteSector(mNodeSector, fileSector.RawBytes);
}
}
public byte[] Read(int index, int length)
{
if (mSector.Type != SECTOR.SectorType.FILE_NODE)
{
throw new Exception("Cannot read data to node type " + mSector.Type.ToString());
}
LoadBlocks();
return(VirtualBlock.ReadBlockData(mDrive, mBlocks, index, length));
}