| 51 | } |
| 52 | |
| 53 | void LegacyBlockChainReader::load_offsets() { |
| 54 | if (m_count == 0 || !m_offsets.empty()) |
| 55 | return; |
| 56 | uint64_t pos = 0; |
| 57 | try { |
| 58 | m_items_file->seek(0, SEEK_END); |
| 59 | uint64_t m_itemsFileSize = m_items_file->tellp(); |
| 60 | std::vector<uint32_t> item_sizes(m_count); |
| 61 | m_indexes_file->read(reinterpret_cast<char *>(item_sizes.data()), m_count * sizeof(uint32_t)); |
| 62 | for (size_t i = 0; i < item_sizes.size(); ++i) { |
| 63 | m_offsets.emplace_back(pos); |
| 64 | pos += item_sizes[i]; |
| 65 | if (pos > m_itemsFileSize) // index offset outside item file |
| 66 | return; |
| 67 | } |
| 68 | } catch (const std::runtime_error &) { |
| 69 | } |
| 70 | m_offsets.emplace_back(pos); |
| 71 | } |
| 72 | |
| 73 | BinaryArray LegacyBlockChainReader::get_block_data_by_index(Height i) { |
| 74 | load_offsets(); |