private IEnumerable <ICdFile> DecodeInternal(IEnumerable <ICdSector> cdSectors)
{
var sectorInfos = _isoDescriptorSectorFinder
.Find(cdSectors.Select(s => _isoSectorInfoDecoder.Decode(s)));
var storageMediums = _isoStorageMediumDecoder.Decode(sectorInfos);
foreach (var volume in storageMediums.Volumes)
{
var pathLba = volume.TypeLPathTableLocation;
var pathTable = _isoPathTableDecoder.Decode(cdSectors.SkipWhile(cds => cds.Number != pathLba));
foreach (var path in pathTable)
{
var directory =
_isoDirectoryTableDecoder.Decode(
cdSectors.SkipWhile(cds => cds.Number != path.LocationOfExtent));
foreach (var entry in directory)
{
if (entry.Flags.HasFlag(IsoFileFlags.Directory))
{
continue;
}
yield return(new CdFile(() =>
_isoSectorStreamFactory.Open(
cdSectors.SkipWhile(cds => cds.Number != entry.LocationOfExtent), entry.DataLength))
{
Name = GetPath(pathTable, entry, path),
Length = entry.DataLength
});
}
}
}
}
private IEnumerable <IsoPathRecord> DecodeInternal(IEnumerable <ICdSector> sectors)
{
using (var stream = _isoSectorStreamFactory.Open(sectors))
{
var reader = new BinaryReader(stream);
while (true)
{
var length = reader.ReadByte();
if (length == 0)
{
yield break;
}
var eaLength = reader.ReadByte();
var lba = reader.ReadInt32();
var parent = reader.ReadUInt16();
var name = reader.ReadBytes(length);
if ((length & 1) != 0)
{
reader.ReadByte();
}
if (name.Length == 1)
{
if (name[0] == 0x00)
{
name = new byte[] { 0x2E }
}
;
else if (name[0] == 0x01)
{
name = new byte[] { 0x2E, 0x2E }
}
;
}
yield return(new IsoPathRecord
{
LocationOfExtent = lba,
DirectoryIdentifier = Encodings.CP437.GetString(name),
ExtendedAttributeRecordLength = eaLength,
ParentDirectoryNumber = parent
});
}
}
}
}
private IEnumerable <IsoDirectoryRecord> DecodeInternal(IEnumerable <ICdSector> sectors)
{
using (var stream = _isoSectorStreamFactory.Open(sectors))
{
while (true)
{
var record = _isoDirectoryRecordDecoder.Decode(stream, false);
if (record != null)
{
yield return(record);
}
else
{
yield break;
}
}
}
}