public PrimaryVolumeDescriptor ReadPVD()
{
XASectorForm1 sector = ReadSector(16);
PrimaryVolumeDescriptor pvd = new PrimaryVolumeDescriptor();
pvd.ReadByte(sector.Data);
return pvd;
}
private void readVolumeDescriptors()
{
XASectorForm1 sector;
VolumeDescriptor vd;
int sectorId = 16;
sector = fs.ReadXA1Sector(sectorId);
vd = new VolumeDescriptor(sector.Data);
while (vd.VolumeDescriptorType != VolumeDescriptorType.VolumeDescriptionSetTerminator && sectorId < intNbSectors)
{
if (vd.StandardIdentifier == "CD001") //valid volume descriptor
{
switch (vd.VolumeDescriptorType)
{
case VolumeDescriptorType.PrimaryVolumeDescriptor:
PrimaryVolumeDescriptor pvd = new PrimaryVolumeDescriptor(sector.Data);
rootDirectory = pvd.RootDirectoryRecord;
volumeDescriptors.Add(pvd);
break;
default:
break;
}
}
sectorId++;
sector = fs.ReadXA1Sector(sectorId);
vd = new VolumeDescriptor(sector.Data);
}
if (vd.StandardIdentifier == "CD001") //valid volume descriptor
{
volumeDescriptors.Add(vd);
}
}
void OpenToolStripMenuItemClick(object sender, EventArgs e)
{
if(openFileDialog1.ShowDialog()==DialogResult.OK)
{
discimg = new ISO9660.Image(openFileDialog1.FileName);
pvd = discimg.ReadPVD();
RefreshPVDInfo();
sectorPos = 0;
RefreshSectorInfo();
}
}
private void readDirectoryRecord(int sectorId)
{
PrimaryVolumeDescriptor pvd = (PrimaryVolumeDescriptor)volumeDescriptors[0];
XASectorForm1 sector = fs.ReadXA1Sector(sectorId);
int offset = 0;
while (sector.Data[offset] != 0)
{
int size = sector.Data[offset];
byte[] data = new byte[size];
Array.Copy(sector.Data, offset, data, 0, size);
DirectoryRecord dr = new DirectoryRecord(data);
if (dr.FileIdentifierLength > 1)
{
dr.FileIdentifier = Encoding.ASCII.GetString(data, 33, dr.FileIdentifierLength - 2);
}
else
{
switch (data[33])
{
case 0:
dr.FileIdentifier = ".";
break;
case 1:
dr.FileIdentifier = "..";
break;
default:
dr.FileIdentifier = "";
break;
}
}
rootDirectory.Children.Add(dr);
offset += size;
}
}
