public SparseExtent(string path) : base(path)
{
m_file = new RawDiskImage(path, VirtualMachineDisk.BytesPerDiskSector);
byte[] headerBytes = m_file.ReadSector(0);
m_header = new SparseExtentHeader(headerBytes);
if (m_header.IsValidAndSupported)
{
if (m_header.DescriptorOffset > 0)
{
byte[] descriptorBytes = m_file.ReadSectors((long)m_header.DescriptorOffset, (int)m_header.DescriptorSize);
string text = ASCIIEncoding.ASCII.GetString(descriptorBytes);
List <string> lines = VirtualMachineDiskDescriptor.GetLines(text);
m_descriptor = new VirtualMachineDiskDescriptor(lines);
}
}
}
public SparseExtent(string path) : base(path)
{
m_file = new RawDiskImage(path, VirtualMachineDisk.BytesPerDiskSector);
byte[] headerBytes = m_file.ReadSector(0);
m_header = new SparseExtentHeader(headerBytes);
if (!m_header.IsSupported)
{
throw new NotSupportedException("Sparse extent header version is not supported");
}
if (m_header.CompressionAlgirithm != SparseExtentCompression.None)
{
throw new NotSupportedException("Sparse extent compression is not supported");
}
if (m_header.DescriptorOffset > 0)
{
byte[] descriptorBytes = m_file.ReadSectors((long)m_header.DescriptorOffset, (int)m_header.DescriptorSize);
string text = ASCIIEncoding.ASCII.GetString(descriptorBytes);
List <string> lines = VirtualMachineDiskDescriptor.GetLines(text);
m_descriptor = new VirtualMachineDiskDescriptor(lines);
}
}