private static HuffmanTree ReadHuffmanTree(BinaryReader reader, BinaryHelpFileHeader header)
{
if (reader.BaseStream.Position != header.HuffmanTreeOffset)
{
throw new InvalidDataException("Incorrect Huffman Tree section position.");
}
//int sectionSize = file.Header.TopicTextOffset - file.Header.HuffmanTreeOffset;
HuffmanTree tree = HuffmanTree.Deserialize(reader);
if (tree.IsEmpty || tree.IsSingular)
{
throw new InvalidDataException("Invalid huffman tree.");
}
return(tree);
}
