public static int ReadFrom(byte[] src, int offset, Encoding enc, out DirectoryRecord record)
{
int length = src[offset + 0];
record = new DirectoryRecord();
record.ExtendedAttributeRecordLength = src[offset + 1];
record.LocationOfExtent = IsoUtilities.ToUInt32FromBoth(src, offset + 2);
record.DataLength = IsoUtilities.ToUInt32FromBoth(src, offset + 10);
record.RecordingDateAndTime = IsoUtilities.ToUTCDateTimeFromDirectoryTime(src, offset + 18);
record.Flags = (FileFlags)src[offset + 25];
record.FileUnitSize = src[offset + 26];
record.InterleaveGapSize = src[offset + 27];
record.VolumeSequenceNumber = IsoUtilities.ToUInt16FromBoth(src, offset + 28);
byte lengthOfFileIdentifier = src[offset + 32];
record.FileIdentifier = IsoUtilities.ReadChars(src, offset + 33, lengthOfFileIdentifier, enc);
int padding = (lengthOfFileIdentifier & 1) == 0 ? 1 : 0;
int startSystemArea = lengthOfFileIdentifier + padding + 33;
int lenSystemArea = length - startSystemArea;
if (lenSystemArea > 0)
{
record.SystemUseData = new byte[lenSystemArea];
Array.Copy(src, offset + startSystemArea, record.SystemUseData, 0, lenSystemArea);
}
return(length);
}
public CommonVolumeDescriptor(byte[] src, int offset, Encoding enc)
: base(src, offset)
{
CharacterEncoding = enc;
SystemIdentifier = IsoUtilities.ReadChars(src, offset + 8, 32, CharacterEncoding);
VolumeIdentifier = IsoUtilities.ReadChars(src, offset + 40, 32, CharacterEncoding);
VolumeSpaceSize = IsoUtilities.ToUInt32FromBoth(src, offset + 80);
VolumeSetSize = IsoUtilities.ToUInt16FromBoth(src, offset + 120);
VolumeSequenceNumber = IsoUtilities.ToUInt16FromBoth(src, offset + 124);
LogicalBlockSize = IsoUtilities.ToUInt16FromBoth(src, offset + 128);
PathTableSize = IsoUtilities.ToUInt32FromBoth(src, offset + 132);
TypeLPathTableLocation = Utilities.ToUInt32LittleEndian(src, offset + 140);
OptionalTypeLPathTableLocation = Utilities.ToUInt32LittleEndian(src, offset + 144);
TypeMPathTableLocation = Utilities.BitSwap(Utilities.ToUInt32LittleEndian(src, offset + 148));
OptionalTypeMPathTableLocation = Utilities.BitSwap(Utilities.ToUInt32LittleEndian(src, offset + 152));
DirectoryRecord.ReadFrom(src, offset + 156, CharacterEncoding, out RootDirectory);
VolumeSetIdentifier = IsoUtilities.ReadChars(src, offset + 190, 318 - 190, CharacterEncoding);
PublisherIdentifier = IsoUtilities.ReadChars(src, offset + 318, 446 - 318, CharacterEncoding);
DataPreparerIdentifier = IsoUtilities.ReadChars(src, offset + 446, 574 - 446, CharacterEncoding);
ApplicationIdentifier = IsoUtilities.ReadChars(src, offset + 574, 702 - 574, CharacterEncoding);
CopyrightFileIdentifier = IsoUtilities.ReadChars(src, offset + 702, 739 - 702, CharacterEncoding);
AbstractFileIdentifier = IsoUtilities.ReadChars(src, offset + 739, 776 - 739, CharacterEncoding);
BibliographicFileIdentifier = IsoUtilities.ReadChars(src, offset + 776, 813 - 776, CharacterEncoding);
CreationDateAndTime = IsoUtilities.ToDateTimeFromVolumeDescriptorTime(src, offset + 813);
ModificationDateAndTime = IsoUtilities.ToDateTimeFromVolumeDescriptorTime(src, offset + 830);
ExpirationDateAndTime = IsoUtilities.ToDateTimeFromVolumeDescriptorTime(src, offset + 847);
EffectiveDateAndTime = IsoUtilities.ToDateTimeFromVolumeDescriptorTime(src, offset + 864);
FileStructureVersion = src[offset + 881];
}
public ExtensionSystemUseEntry(byte[] data, int offset, Encoding encoding)
{
byte len = data[offset + 2];
Name = "ER";
Version = data[offset + 3];
CheckLengthAndVersion(len, 8, 1);
int lenId = data[offset + 4];
int lenDescriptor = data[offset + 5];
int lenSource = data[offset + 6];
ExtensionVersion = data[offset + 7];
if (len < 8 + lenId + lenDescriptor + lenSource)
{
throw new InvalidDataException("Invalid SUSP ER entry - too short, only " + len + " bytes - expected: " + (8 + lenId + lenDescriptor + lenSource));
}
ExtensionIdentifier = IsoUtilities.ReadChars(data, offset + 8, lenId, encoding);
ExtensionDescriptor = IsoUtilities.ReadChars(data, offset + 8 + lenId, lenDescriptor, encoding);
ExtensionSource = IsoUtilities.ReadChars(data, offset + 8 + lenId + lenDescriptor, lenSource, encoding);
}
