Method Read

libs/coding/text_storage.hpp:183–206

  template <typename Reader>
  void Read(Reader & reader)
  {
    auto const indexOffset = ReadPrimitiveFromPos<uint64_t>(reader, 0);

    NonOwningReaderSource source(reader);
    source.Skip(indexOffset);

    auto const numBlocks = ReadVarUint<uint64_t>(source);
    m_blocks.assign(static_cast<size_t>(numBlocks), {});

    uint64_t prevOffset = 8;  // 8 bytes for the offset of the data section
    for (uint64_t i = 0; i < numBlocks; ++i)
    {
      auto const delta = ReadVarUint<uint64_t>(source);
      CHECK_GREATER_OR_EQUAL(prevOffset + delta, prevOffset, ());
      prevOffset += delta;

      auto & block = m_blocks[static_cast<size_t>(i)];
      block.m_offset = prevOffset;
      block.m_from = i == 0 ? 0 : m_blocks[static_cast<size_t>(i - 1)].To();
      block.m_subs = ReadVarUint<uint64_t>(source);
      CHECK_GREATER_OR_EQUAL(block.m_from + block.m_subs, block.m_from, ());
    }
  }

private:
  std::vector<BlockInfo> m_blocks;