Method createTocEntry

lib/Epub/Epub/BookMetadataCache.cpp:327–373

}

void BookMetadataCache::createTocEntry(const std::string& title, const std::string& href, const std::string& anchor,
                                       const uint8_t level) {
  if (!buildMode || !tocFile || !spineFile) {
    LOG_DBG("BMC", "createTocEntry called but not in build mode");
    return;
  }

  int16_t spineIndex = -1;

  if (useSpineHrefIndex) {
    uint64_t targetHash = fnvHash64(href);
    uint16_t targetLen = static_cast<uint16_t>(href.size());

    auto it =
        std::lower_bound(spineHrefIndex.begin(), spineHrefIndex.end(), SpineHrefIndexEntry{targetHash, targetLen, 0},
                         [](const SpineHrefIndexEntry& a, const SpineHrefIndexEntry& b) {
                           return a.hrefHash < b.hrefHash || (a.hrefHash == b.hrefHash && a.hrefLen < b.hrefLen);
                         });

    while (it != spineHrefIndex.end() && it->hrefHash == targetHash && it->hrefLen == targetLen) {
      spineIndex = it->spineIndex;
      break;
    }

    if (spineIndex == -1) {
      LOG_DBG("BMC", "createTocEntry: Could not find spine item for TOC href %s", href.c_str());
    }
  } else {
    spineFile.seek(0);
    for (int i = 0; i < spineCount; i++) {
      auto spineEntry = readSpineEntry(spineFile);
      if (spineEntry.href == href) {
        spineIndex = static_cast<int16_t>(i);
        break;
      }
    }
    if (spineIndex == -1) {
      LOG_DBG("BMC", "createTocEntry: Could not find spine item for TOC href %s", href.c_str());
    }
  }

  // Compose the title to NFC at index time so the cache stores precomposed glyphs;
  // device fonts have no combining-mark positioning, so NFD titles render broken.
  const TocEntry entry(utf8ComposeNfc(title), href, anchor, level, spineIndex);
  writeTocEntry(tocFile, entry);
  tocCount++;
}

/* ============= READING / LOADING FUNCTIONS ================ */