Esempio n. 1
0
bool ChangeLog::checkChanges(const QString &previousVersion, const QString &currentVersion)
{
    QVersionNumber previous = QVersionNumber::fromString(previousVersion);
    QVersionNumber current = QVersionNumber::fromString(currentVersion);
    if (current <= previous) {
        qCInfo(CHANGELOG_CATEGORY) << "Current version isn't newer, than previous"
                                   << previousVersion << currentVersion;
        return false;
    }

    QFileSelector fileSelector;
    fileSelector.setExtraSelectors(QStringList() << QLocale::system().uiLanguages().constFirst().split('-').constFirst());
    const QString path = fileSelector.select(":/changelogs/changelog.json");

    QFile file(path);
    if (!file.open(QIODevice::ReadOnly)) {
        qCCritical(CHANGELOG_CATEGORY) << "Fail to open changelog file" << path << file.errorString();
        return false;
    }
    QByteArray data = file.readAll();

    QJsonParseError parseError;
    QJsonDocument document = QJsonDocument::fromJson(data, &parseError);
    if (parseError.error != QJsonParseError::NoError) {
        qCritical(CHANGELOG_CATEGORY) << "Fail to parse changelog data JSON:"
                                      << data << "error at offset"
                                      << parseError.offset
                                      << parseError.errorString() << parseError.error;
        return false;
    }
    QVariantList content = document.array().toVariantList();

    while (!content.isEmpty()) {
        if (QVersionNumber::fromString(content.constFirst().toMap().value("version").toString()) > current) {
            content.takeFirst();
        } else {
            break;
        }
    }
    QVariantList result;
    while (!content.isEmpty()) {
        if (QVersionNumber::fromString(content.constFirst().toMap().value("version").toString()) > previous) {
            result.append(content.takeFirst());
        } else {
            break;
        }
    }

    if (result.isEmpty()) {
        qCWarning(CHANGELOG_CATEGORY) << "Empty changelog" << previousVersion << currentVersion;
        return false;
    }

    emit changesAvailable(result);

    return true;
}