/// <summary>
/// Parse the given stream to populate the iso information
/// </summary>
/// <param name="s">The stream which we are using to parse the image.
/// Should already be located at the start of the image.</param>
public void Parse(Stream s)
{
long startPosition = s.Position;
byte[] buffer = new byte[ISOFile.SECTOR_SIZE];
// Seek through the first volume descriptor
s.Seek(startPosition + (SECTOR_SIZE * 16), SeekOrigin.Begin);
// Read one of more volume descriptors
do
{
ISOVolumeDescriptor desc = new ISOVolumeDescriptor();
desc.Parse(s);
if (desc.IsTerminator())
{
break;
}
else
{
this.VolumeDescriptors.Add(desc);
}
} while(true);
// Check to make sure we only read one volume descriptor
// Finding more could be an error with the disk.
if (this.VolumeDescriptors.Count != 1)
{
Console.WriteLine("Strange ISO format...");
return;
}
// Visit all the directories and get the offset of each directory/file
// We need to keep track of the directories and files we have visited in case there are loops.
Dictionary <long, ISONode> visitedNodes = new Dictionary <long, ISONode>();
// Create (and visit) the root node
this.Root = new ISODirectoryNode(this.VolumeDescriptors[0].RootDirectoryRecord);
visitedNodes.Add(this.Root.Offset, this.Root);
this.Root.Parse(s, visitedNodes);
}
/// <summary>
/// Parse the given stream to populate the iso information
/// </summary>
/// <param name="s">The stream which we are using to parse the image.
/// Should already be located at the start of the image.</param>
public void Parse(Stream s)
{
long startPosition = s.Position;
byte[] buffer = new byte[ISOFile.SECTOR_SIZE];
// Seek through the first volume descriptor
s.Seek(startPosition+(SECTOR_SIZE * 16), SeekOrigin.Begin);
// Read one of more volume descriptors
do {
ISOVolumeDescriptor desc = new ISOVolumeDescriptor();
desc.Parse(s);
if (desc.IsTerminator()) {
break;
}
else {
this.VolumeDescriptors.Add(desc);
}
} while(true);
// Check to make sure we only read one volume descriptor
// Finding more could be an error with the disk.
if (this.VolumeDescriptors.Count != 1) {
Console.WriteLine("Strange ISO format...");
return;
}
// Visit all the directories and get the offset of each directory/file
// We need to keep track of the directories and files we have visited in case there are loops.
Dictionary<long, ISONode> visitedNodes = new Dictionary<long,ISONode>();
// Create (and visit) the root node
this.Root = new ISODirectoryNode(this.VolumeDescriptors[0].RootDirectoryRecord);
visitedNodes.Add(this.Root.Offset, this.Root);
this.Root.Parse(s, visitedNodes);
}
/// <summary>
/// Parse the given stream to populate the iso information
/// </summary>
/// <param name="s">The stream which we are using to parse the image.
/// Should already be located at the start of the image.</param>
public bool Parse(Stream s, int startSector = 16)
{
this.VolumeDescriptors = new List <ISOVolumeDescriptor>();
Root = null;
long startPosition = s.Position;
byte[] buffer = new byte[ISOFile.SECTOR_SIZE];
// Seek through the first volume descriptor
s.Seek(startPosition + (SECTOR_SIZE * startSector), SeekOrigin.Begin);
// Read one of more volume descriptors
do
{
//zero 24-jun-2013 - improved validity checks
ISOVolumeDescriptor desc = new ISOVolumeDescriptor();
bool isValid = desc.Parse(s);
if (!isValid)
{
return(false);
}
this.CDFSType = Format;
if (desc.IsTerminator())
{
break;
}
else if (desc.Type < 4)
{
this.VolumeDescriptors.Add(desc);
}
else
{
//found a volume descriptor of incorrect type.. maybe this isnt a cdfs
//supposedly these exist.. wait for one to show up
return(false);
}
} while (true);
//zero 24-jun-2013 - well, my very first test iso had 2 volume descriptors.
// Check to make sure we only read one volume descriptor
// Finding more could be an error with the disk.
//if (this.VolumeDescriptors.Count != 1) {
// Console.WriteLine("Strange ISO format...");
// return;
//}
//zero 24-jun-2013 - if theres no volume descriptors, we're gonna call this not a cdfs
if (VolumeDescriptors.Count == 0)
{
return(false);
}
// Visit all the directories and get the offset of each directory/file
// We need to keep track of the directories and files we have visited in case there are loops.
Dictionary <long, ISONode> visitedNodes = new Dictionary <long, ISONode>();
// Create (and visit) the root node
this.Root = new ISODirectoryNode(this.VolumeDescriptors[0].RootDirectoryRecord);
visitedNodes.Add(this.Root.Offset, this.Root);
this.Root.Parse(s, visitedNodes);
return(true);
}