Method LoadFromMappedBuffer

src/MarisaDict.cpp:190–219

}

void MarisaDict::LoadFromMappedBuffer() {
  try {
    internal->marisa->map(internal->mappedBuffer.data(),
                          internal->mappedBuffer.size());
  } catch (const std::exception& e) {
    throw InvalidFormat(std::string("Invalid OpenCC Marisa dictionary: ") +
                        e.what());
  }

  const size_t trieSize = internal->marisa->io_size();
  if (trieSize > internal->mappedBuffer.size()) {
    throw InvalidFormat(
        "Invalid OpenCC Marisa dictionary (trie exceeds file size)");
  }

  size_t valuesBytesRead = 0;
  std::shared_ptr<SerializedValues> serialized_values =
      SerializedValues::NewFromBuffer(
          internal->mappedBuffer.data() + trieSize,
          internal->mappedBuffer.size() - trieSize, &valuesBytesRead);
  valuesLexicon = serialized_values->GetLexicon();
  // Validate key count consistency
  size_t numKeys = internal->marisa->num_keys();
  if (numKeys != valuesLexicon->Length()) {
    throw InvalidFormat(
        "Invalid OpenCC Marisa dictionary (key count mismatch)");
  }
  maxLength = 128;
  lexiconReconstructed.store(false, std::memory_order_release);
}


MarisaDictPtr MarisaDict::NewFromDict(const Dict& thatDict) {