Esempio n. 1
0
        //public static int ReadFrom(byte[] src, int offset, bool byteSwap, Encoding enc, out PathTableRecord record)
        //{
        //    byte directoryIdentifierLength = src[offset + 0];
        //    record.ExtendedAttributeRecordLength = src[offset + 1];
        //    record.LocationOfExtent = Utilities.ToUInt32LittleEndian(src, offset + 2);
        //    record.ParentDirectoryNumber = Utilities.ToUInt16LittleEndian(src, offset + 6);
        //    record.DirectoryIdentifier = IsoUtilities.ReadChars(src, offset + 8, directoryIdentifierLength, enc);

        //    if (byteSwap)
        //    {
        //        record.LocationOfExtent = Utilities.BitSwap(record.LocationOfExtent);
        //        record.ParentDirectoryNumber = Utilities.BitSwap(record.ParentDirectoryNumber);
        //    }

        //    return directoryIdentifierLength + 8 + (((directoryIdentifierLength & 1) == 1) ? 1 : 0);
        //}

        internal int Write(bool byteSwap, Encoding enc, byte[] buffer, int offset)
        {
            int nameBytes = enc.GetByteCount(DirectoryIdentifier);

            buffer[offset + 0] = (byte)nameBytes;
            buffer[offset + 1] = 0; // ExtendedAttributeRecordLength;
            IsoUtilities.ToBytesFromUInt32(buffer, offset + 2, byteSwap ? Utilities.BitSwap(LocationOfExtent) : LocationOfExtent);
            IsoUtilities.ToBytesFromUInt16(buffer, offset + 6, byteSwap ? Utilities.BitSwap(ParentDirectoryNumber) : ParentDirectoryNumber);
            IsoUtilities.WriteString(buffer, offset + 8, nameBytes, false, DirectoryIdentifier, enc);
            if ((nameBytes & 1) == 1)
            {
                buffer[offset + 8 + nameBytes] = 0;
            }

            return((int)(8 + nameBytes + (((nameBytes & 0x1) == 1) ? 1 : 0)));
        }