Method parseTocNcxFile

lib/Epub/Epub.cpp:147–201

}

bool Epub::parseTocNcxFile() const {
  // the ncx file should have been specified in the content.opf file
  if (tocNcxItem.empty()) {
    LOG_DBG("EBP", "No ncx file specified");
    return false;
  }

  LOG_DBG("EBP", "Parsing toc ncx file: %s", tocNcxItem.c_str());

  const auto tmpNcxPath = getCachePath() + "/toc.ncx";
  HalFile tempNcxFile;
  if (!Storage.openFileForWrite("EBP", tmpNcxPath, tempNcxFile)) {
    return false;
  }
  readItemContentsToStream(tocNcxItem, tempNcxFile, 1024);
  // Explicitly close() file before reopening for reading
  tempNcxFile.close();
  if (!Storage.openFileForRead("EBP", tmpNcxPath, tempNcxFile)) {
    return false;
  }
  const auto ncxSize = tempNcxFile.size();

  TocNcxParser ncxParser(contentBasePath, ncxSize, bookMetadataCache.get());

  if (!ncxParser.setup()) {
    LOG_ERR("EBP", "Could not setup toc ncx parser");
    return false;
  }

  const auto ncxBuffer = static_cast<uint8_t*>(malloc(1024));
  if (!ncxBuffer) {
    LOG_ERR("EBP", "Could not allocate memory for toc ncx parser");
    return false;
  }

  while (tempNcxFile.available()) {
    const auto readSize = tempNcxFile.read(ncxBuffer, 1024);
    if (readSize == 0) break;
    const auto processedSize = ncxParser.write(ncxBuffer, readSize);

    if (processedSize != readSize) {
      LOG_ERR("EBP", "Could not process all toc ncx data");
      free(ncxBuffer);
      return false;
    }
  }

  free(ncxBuffer);
  // Explicitly close() file before calling Storage.remove()
  tempNcxFile.close();
  Storage.remove(tmpNcxPath.c_str());

  LOG_DBG("EBP", "Parsed TOC items");
  return true;
}

bool Epub::parseTocNavFile() const {
  // the nav file should have been specified in the content.opf file (EPUB 3)