internal MediaFolder( UmdDevice device, MediaFolder parent, string name, MediaItemAttributes attributes, DateTime timestamp )
{
Debug.Assert( device != null );
_device = device;
_parent = parent;
_name = name;
_attributes = attributes;
_timestamp = timestamp;
_items = new List<IMediaItem>();
_itemLookup = new Dictionary<string, IMediaItem>();
// Add to parent
if( _parent != null )
_parent.AddItemInternal( this );
}
protected MediaFolder ParseIsoFileSystem(string path, bool minimalCache)
{
Debug.Assert(path != null);
Debug.Assert(File.Exists(path) == true);
if (File.Exists(path) == false)
{
return(null);
}
using (FileStream stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
using (BinaryReader reader = new BinaryReader(stream))
{
NativePrimaryDescriptor?npdv = NativePrimaryDescriptor.FromStream(reader);
Debug.Assert(npdv != null);
if (npdv == null)
{
return(null);
}
NativePrimaryDescriptor npd = npdv.Value;
List <NativePathEntry> npes = new List <NativePathEntry>();
stream.Seek(npd.PathTableStart * 2048, SeekOrigin.Begin);
while (stream.Position < (npd.PathTableStart * 2048) + npd.PathTableLength)
{
NativePathEntry npe = NativePathEntry.FromReader(reader);
if (npe == null)
{
continue;
}
npes.Add(npe);
}
List <MediaFolder> folders = new List <MediaFolder>(npes.Count);
for (int n = 0; n < npes.Count; n++)
{
NativePathEntry npe = npes[n];
MediaFolder current = null;
MediaFolder parent = null;
if (npe.IsRoot == false)
{
parent = folders[npe.ParentEntry];
}
if (npe.Length == 0)
{
// Look in parent for length
if (parent != null)
{
NativePathEntry pe = npes[npe.ParentEntry];
npe.Length = pe.ChildLengths[npe.Name];
}
else
{
npe.Length = 2048;
}
}
int m = 0;
for (int s = 0; s < npe.Length / 2048; s++)
{
stream.Seek((npe.FirstSector + s) * 2048, SeekOrigin.Begin);
while (true)
{
NativeEntry?nev = NativeEntry.FromReader(reader);
if (nev == null)
{
break;
}
NativeEntry ne = nev.Value;
if (m == 0)
{
// '.' this dir
MediaItemAttributes attributes = MediaItemAttributes.Normal;
if ((ne.Flags & NativeEntryFlags.Hidden) == NativeEntryFlags.Hidden)
{
attributes |= MediaItemAttributes.Hidden;
}
current = new MediaFolder(this, parent, npe.Name, attributes, ne.Timestamp);
folders.Add(current);
}
else if (m == 1)
{
// '..' parent dir - ignored
}
else
{
// Child
if ((ne.Flags & NativeEntryFlags.Directory) == NativeEntryFlags.Directory)
{
// Directories are handled when it is their turn to be added
// EXCEPT for size, which we need to get now and store back
// At this time in the code, we have all dirs prior to the one whose length
// we just got - since we have already added ourselves, we know we have its
// parent too
npe.ChildLengths.Add(ne.Name, ne.Length);
}
else
{
MediaItemAttributes attributes = MediaItemAttributes.Normal;
if ((ne.Flags & NativeEntryFlags.Hidden) == NativeEntryFlags.Hidden)
{
attributes |= MediaItemAttributes.Hidden;
}
long lbn = ne.FirstSector /* * 2048*/;
MediaFile file = new MediaFile(this, current, ne.Name, attributes, ne.Timestamp, lbn * 2048, ne.Length);
//Log.WriteLine(Verbosity.Normal, Feature.Bios, "{0} = {1}", ne.Name, lbn);
// Pretty sure this is wrong, but it shouldn't matter
Debug.Assert(_lbnLookup.ContainsKey(lbn) == false);
_lbnLookup[lbn] = file;
}
}
m++;
if ((ne.Flags & NativeEntryFlags.LastEntry) == NativeEntryFlags.LastEntry)
{
break;
}
}
}
}
return(folders[0]);
}
}
public bool Load( string path, bool minimalCache )
{
_hostPath = path;
FileInfo fi = new FileInfo( path );
_capacity = fi.Length;
_lbnLookup.Clear();
_root = ParseIsoFileSystem( path, minimalCache );
Debug.Assert( _root != null );
_root.CalculateSize();
// Would be nice to do something with this that was official-like (serial number?)
_description = string.Format( "UMD ({0}MB)",
_capacity / 1024 / 1024 );
_state = MediaState.Present;
return true;
}
protected MediaFolder ParseIsoFileSystem( string path, bool minimalCache )
{
Debug.Assert( path != null );
Debug.Assert( File.Exists( path ) == true );
if( File.Exists( path ) == false )
return null;
using( FileStream stream = File.Open( path, FileMode.Open, FileAccess.Read, FileShare.Read ) )
using( BinaryReader reader = new BinaryReader( stream ) )
{
NativePrimaryDescriptor? npdv = NativePrimaryDescriptor.FromStream( reader );
Debug.Assert( npdv != null );
if( npdv == null )
return null;
NativePrimaryDescriptor npd = npdv.Value;
List<NativePathEntry> npes = new List<NativePathEntry>();
stream.Seek( npd.PathTableStart * 2048, SeekOrigin.Begin );
while( stream.Position < ( npd.PathTableStart * 2048 ) + npd.PathTableLength )
{
NativePathEntry npe = NativePathEntry.FromReader( reader );
if( npe == null )
continue;
npes.Add( npe );
}
List<MediaFolder> folders = new List<MediaFolder>( npes.Count );
for( int n = 0; n < npes.Count; n++ )
{
NativePathEntry npe = npes[ n ];
MediaFolder current = null;
MediaFolder parent = null;
if( npe.IsRoot == false )
parent = folders[ npe.ParentEntry ];
if( npe.Length == 0 )
{
// Look in parent for length
if( parent != null )
{
NativePathEntry pe = npes[ npe.ParentEntry ];
npe.Length = pe.ChildLengths[ npe.Name ];
}
else
npe.Length = 2048;
}
int m = 0;
for( int s = 0; s < npe.Length / 2048; s++ )
{
stream.Seek( ( npe.FirstSector + s ) * 2048, SeekOrigin.Begin );
while( true )
{
NativeEntry? nev = NativeEntry.FromReader( reader );
if( nev == null )
break;
NativeEntry ne = nev.Value;
if( m == 0 )
{
// '.' this dir
MediaItemAttributes attributes = MediaItemAttributes.Normal;
if( ( ne.Flags & NativeEntryFlags.Hidden ) == NativeEntryFlags.Hidden )
attributes |= MediaItemAttributes.Hidden;
current = new MediaFolder( this, parent, npe.Name, attributes, ne.Timestamp );
folders.Add( current );
}
else if( m == 1 )
{
// '..' parent dir - ignored
}
else
{
// Child
if( ( ne.Flags & NativeEntryFlags.Directory ) == NativeEntryFlags.Directory )
{
// Directories are handled when it is their turn to be added
// EXCEPT for size, which we need to get now and store back
// At this time in the code, we have all dirs prior to the one whose length
// we just got - since we have already added ourselves, we know we have its
// parent too
npe.ChildLengths.Add( ne.Name, ne.Length );
}
else
{
MediaItemAttributes attributes = MediaItemAttributes.Normal;
if( ( ne.Flags & NativeEntryFlags.Hidden ) == NativeEntryFlags.Hidden )
attributes |= MediaItemAttributes.Hidden;
long lbn = ne.FirstSector/* * 2048*/;
MediaFile file = new MediaFile( this, current, ne.Name, attributes, ne.Timestamp, lbn * 2048, ne.Length );
//Log.WriteLine(Verbosity.Normal, Feature.Bios, "{0} = {1}", ne.Name, lbn);
// Pretty sure this is wrong, but it shouldn't matter
Debug.Assert( _lbnLookup.ContainsKey( lbn ) == false );
_lbnLookup[ lbn ] = file;
}
}
m++;
if( ( ne.Flags & NativeEntryFlags.LastEntry ) == NativeEntryFlags.LastEntry )
break;
}
}
}
return folders[ 0 ];
}
}
public void Cleanup()
{
_root = null;
}
