C++ QTorrentHandle::has_metadata方法代码示例

/**
 * Returns the files in a torrent in JSON format.
 *
 * The return value is a JSON-formatted list of dictionaries.
 * The dictionary keys are:
 *   - "name": File name
 *   - "size": File size
 *   - "progress": File progress
 *   - "priority": File priority
 *   - "is_seed": Flag indicating if torrent is seeding/complete
 */
QString btjson::getFilesForTorrent(const QString& hash)
{
  CACHED_VARIABLE_FOR_HASH(JsonList, file_list, CACHE_DURATION_MS, hash);
  try {
    QTorrentHandle h = QBtSession::instance()->getTorrentHandle(hash);
    if (!h.has_metadata())
      return QString();

    const std::vector<int> priorities = h.file_priorities();
    std::vector<size_type> fp;
    h.file_progress(fp);
    for (int i = 0; i < h.num_files(); ++i) {
      JsonDict file_dict;
      QString fileName = h.filename_at(i);
      if (fileName.endsWith(".!qB", Qt::CaseInsensitive))
        fileName.chop(4);
      file_dict.add(KEY_FILE_NAME, fileName);
      const size_type size = h.filesize_at(i);
      file_dict.add(KEY_FILE_SIZE, misc::friendlyUnit(size));
      file_dict.add(KEY_FILE_PROGRESS, (size > 0) ? (fp[i] / (double) size) : 1.);
      file_dict.add(KEY_FILE_PRIORITY, priorities[i]);
      if (i == 0)
        file_dict.add(KEY_FILE_IS_SEED, h.is_seed());

      file_list.append(file_dict);
    }
  } catch (const std::exception& e) {
    qWarning() << Q_FUNC_INFO << "Invalid torrent: " << e.what();
    return QString();
  }

  return file_list.toString();
}

/**
 * Returns the files in a torrent in JSON format.
 *
 * The return value is a JSON-formatted list of dictionaries.
 * The dictionary keys are:
 *   - "name": File name
 *   - "size": File size
 *   - "progress": File progress
 *   - "priority": File priority
 *   - "is_seed": Flag indicating if torrent is seeding/complete
 */
QByteArray btjson::getFilesForTorrent(const QString& hash)
{
    CACHED_VARIABLE_FOR_HASH(QVariantList, file_list, CACHE_DURATION_MS, hash);
    try {
        QTorrentHandle h = QBtSession::instance()->getTorrentHandle(hash);
        if (!h.has_metadata())
            return json::toJson(file_list);

        const std::vector<int> priorities = h.file_priorities();
        std::vector<size_type> fp;
        h.file_progress(fp);
        for (int i = 0; i < h.num_files(); ++i) {
            QVariantMap file_dict;
            QString fileName = h.filepath_at(i);
            if (fileName.endsWith(".!qB", Qt::CaseInsensitive))
                fileName.chop(4);
            file_dict[KEY_FILE_NAME] = fsutils::toNativePath(fileName);
            const size_type size = h.filesize_at(i);
            file_dict[KEY_FILE_SIZE] = static_cast<qlonglong>(size);
            file_dict[KEY_FILE_PROGRESS] = (size > 0) ? (fp[i] / (double) size) : 1.;
            file_dict[KEY_FILE_PRIORITY] = priorities[i];
            if (i == 0)
                file_dict[KEY_FILE_IS_SEED] = h.is_seed();

            file_list.append(file_dict);
        }
    }
    catch (const std::exception& e) {
        qWarning() << Q_FUNC_INFO << "Invalid torrent: " << misc::toQStringU(e.what());
        return QByteArray();
    }

    return json::toJson(file_list);
}

/**
 * Returns the properties for a torrent in JSON format.
 *
 * The return value is a JSON-formatted dictionary.
 * The dictionary keys are:
 *   - "save_path": Torrent save path
 *   - "creation_date": Torrent creation date
 *   - "piece_size": Torrent piece size
 *   - "comment": Torrent comment
 *   - "total_wasted": Total data wasted for torrent
 *   - "total_uploaded": Total data uploaded for torrent
 *   - "total_downloaded": Total data uploaded for torrent
 *   - "up_limit": Torrent upload limit
 *   - "dl_limit": Torrent download limit
 *   - "time_elapsed": Torrent elapsed time
 *   - "nb_connections": Torrent connection count
 *   - "share_ratio": Torrent share ratio
 */
QString btjson::getPropertiesForTorrent(const QString& hash)
{
  CACHED_VARIABLE_FOR_HASH(JsonDict, data, CACHE_DURATION_MS, hash);
  try {
    QTorrentHandle h = QBtSession::instance()->getTorrentHandle(hash);

    if (!h.has_metadata())
      return QString();

    // Save path
    QString save_path = TorrentPersistentData::getSavePath(hash);
    if (save_path.isEmpty())
      save_path = h.save_path();
    data.add(KEY_PROP_SAVE_PATH, save_path);
    data.add(KEY_PROP_CREATION_DATE, h.creation_date());
    data.add(KEY_PROP_PIECE_SIZE, misc::friendlyUnit(h.piece_length()));
    data.add(KEY_PROP_COMMENT, h.comment());
    data.add(KEY_PROP_WASTED, misc::friendlyUnit(h.total_failed_bytes() + h.total_redundant_bytes()));
    data.add(KEY_PROP_UPLOADED, QString(misc::friendlyUnit(h.all_time_upload()) + " (" + misc::friendlyUnit(h.total_payload_upload()) + " " + tr("this session") + ")"));
    data.add(KEY_PROP_DOWNLOADED, QString(misc::friendlyUnit(h.all_time_download()) + " (" + misc::friendlyUnit(h.total_payload_download()) + " " + tr("this session") + ")"));
    data.add(KEY_PROP_UP_LIMIT, h.upload_limit() <= 0 ? QString::fromUtf8("∞") : misc::friendlyUnit(h.upload_limit(), true));
    data.add(KEY_PROP_DL_LIMIT, h.download_limit() <= 0 ? QString::fromUtf8("∞") : misc::friendlyUnit(h.download_limit(), true));
    QString elapsed_txt = misc::userFriendlyDuration(h.active_time());
    if (h.is_seed())
      elapsed_txt += " ("+tr("Seeded for %1", "e.g. Seeded for 3m10s").arg(misc::userFriendlyDuration(h.seeding_time()))+")";
    data.add(KEY_PROP_TIME_ELAPSED, elapsed_txt);
    data.add(KEY_PROP_CONNECT_COUNT, QString(QString::number(h.num_connections()) + " (" + tr("%1 max", "e.g. 10 max").arg(QString::number(h.connections_limit())) + ")"));
    const qreal ratio = QBtSession::instance()->getRealRatio(h.hash());
    /* HACK because QString rounds up. Eg QString::number(0.999*100.0, 'f' ,1) == 99.9
    ** but QString::number(0.9999*100.0, 'f' ,1) == 100.0 */
    data.add(KEY_PROP_RATIO, ratio > 100. ? QString::fromUtf8("∞") : QString::number((int)(ratio*10)/10.0, 'f', 1));
  } catch(const std::exception& e) {
    qWarning() << Q_FUNC_INFO << "Invalid torrent: " << e.what();
    return QString();
  }

  return data.toString();
}