public byte[] Read(int index, int length)
{
//reads length data bytes from file starting at index byte
//fill cache by read current data from disk for this file
LoadBlocks();
//copy data from blocks
return(VirtualBlock.ReadBlockData(drive, blocks, index, length));
}
public byte[] Read(int index, int length)
{
if (!IsFile)
{
throw new Exception("Must be a file to read bytes!");
}
// Make sure the cache is filled
LoadBlocks();
// Copy the data from the blocks
byte[] result = VirtualBlock.ReadBlockData(drive, blocks, index, length);
// Return the data
return(result);
}
public byte[] Read(int index, int length)
{
// Make sure this is a file
if (!IsFile)
{
throw new Exception("Must read from a file!");
}
// Check for reading past end
if ((index + length) > FileLength)
{
throw new Exception("Can't read beyond end of file! /n");
}
// Load the cache of blocks for the file
LoadBlocks();
// Write the bytes to the cache
return(VirtualBlock.ReadBlockData(drive, blocks, index, length));
}