Ejemplo n.º 1
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        public IndexNode(IndexNodeSaveFn store, int storeOverhead, Index index, bool isRoot, byte[] buffer, int offset)
        {
            _store = store;
            _storageOverhead = storeOverhead;
            _index = index;
            _isRoot = isRoot;
            _header = new IndexHeader(buffer, offset + 0);
            _totalSpaceAvailable = _header.AllocatedSizeOfEntries;

            _entries = new List<IndexEntry>();
            int pos = (int)_header.OffsetToFirstEntry;
            while (pos < _header.TotalSizeOfEntries)
            {
                IndexEntry entry = new IndexEntry(index.IsFileIndex);
                entry.Read(buffer, offset + pos);
                _entries.Add(entry);

                if ((entry.Flags & IndexEntryFlags.End) != 0)
                {
                    break;
                }

                pos += entry.Size;
            }
        }
Ejemplo n.º 2
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        public IndexBlock(Index index, bool isRoot, IndexEntry parentEntry, BiosParameterBlock bpb)
            : base("INDX", bpb.BytesPerSector)
        {
            _index = index;
            _isRoot = isRoot;

            Stream stream = index.AllocationStream;
            _streamPosition = parentEntry.ChildrenVirtualCluster * bpb.BytesPerSector * bpb.SectorsPerCluster;
            stream.Position = _streamPosition;
            byte[] buffer = Utilities.ReadFully(stream, (int)index.IndexBufferSize);
            FromBytes(buffer, 0);
        }
Ejemplo n.º 3
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        private IndexBlock(Index index, bool isRoot, long vcn, BiosParameterBlock bpb)
            : base("INDX", bpb.BytesPerSector, bpb.IndexBufferSize)
        {
            _index = index;
            _isRoot = isRoot;

            _indexBlockVcn = (ulong)vcn;

            _streamPosition = vcn * bpb.BytesPerSector * bpb.SectorsPerCluster;

            _node = new IndexNode(WriteToDisk, UpdateSequenceSize, _index, isRoot, (uint)bpb.IndexBufferSize - FieldSize);

            WriteToDisk();
        }
Ejemplo n.º 4
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        public IndexNode(IndexNodeSaveFn store, int storeOverhead, Index index, bool isRoot, uint allocatedSize)
        {
            _store = store;
            _storageOverhead = storeOverhead;
            _index = index;
            _isRoot = isRoot;
            _header = new IndexHeader(allocatedSize);
            _totalSpaceAvailable = allocatedSize;

            IndexEntry endEntry = new IndexEntry(_index.IsFileIndex);
            endEntry.Flags |= IndexEntryFlags.End;

            _entries = new List<IndexEntry>();
            _entries.Add(endEntry);

            _header.OffsetToFirstEntry = (uint)(IndexHeader.Size + storeOverhead);
            _header.TotalSizeOfEntries = (uint)(_header.OffsetToFirstEntry + endEntry.Size);
        }
Ejemplo n.º 5
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 internal static IndexBlock Initialize(Index index, bool isRoot, IndexEntry parentEntry, BiosParameterBlock bpb)
 {
     return new IndexBlock(index, isRoot, parentEntry.ChildrenVirtualCluster, bpb);
 }
Ejemplo n.º 6
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        public Index GetIndex(string name)
        {
            Index idx = _indexCache[name];

            if (idx == null)
            {
                idx = new Index(this, name, _context.BiosParameterBlock, _context.UpperCase);
                _indexCache[name] = idx;
            }

            return idx;
        }
Ejemplo n.º 7
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        public static void Create(AttributeType attrType, AttributeCollationRule collationRule, File file, string name)
        {
            Index idx = new Index(attrType, collationRule, file, name, file.Context.BiosParameterBlock, file.Context.UpperCase);

            idx.WriteRootNodeToDisk();
        }
Ejemplo n.º 8
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 public IndexView(Index index)
 {
     _index = index;
 }
Ejemplo n.º 9
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 internal static IndexBlock Initialize(Index index, bool isRoot, IndexEntry parentEntry, BiosParameterBlock bpb)
 {
     return(new IndexBlock(index, isRoot, parentEntry.ChildrenVirtualCluster, bpb));
 }