Method editConfigViaScript

cli/application.cpp:918–1043

}

QByteArray Application::editConfigViaScript() const
{
#if defined(SYNCTHINGCTL_USE_SCRIPT) || defined(SYNCTHINGCTL_USE_JSENGINE)
    // get script
    auto script = QByteArray();
    auto scriptFileName = QString();
    if (m_args.script.isPresent()) {
        // read script file
        auto scriptFile = QFile(QString::fromLocal8Bit(m_args.script.firstValue()));
        if (scriptFile.open(QFile::ReadOnly)) {
            script = scriptFile.readAll();
            scriptFileName = scriptFile.fileName();
        }
        if (scriptFile.error() != QFile::NoError) {
            cerr << Phrases::Error << "Unable to read specified script file \"" << m_args.script.firstValue() << "\":" << Phrases::End;
            cerr << scriptFile.errorString().toStdString() << '\n';
            return QByteArray();
        }
    } else if (m_args.jsLines.isPresent()) {
        // construct script from CLI arguments
        auto requiredSize = QString::size_type(0);
        for (const auto *const line : m_args.jsLines.values()) {
            requiredSize += static_cast<QString::size_type>(std::strlen(line)) + 1;
        }
        script.reserve(requiredSize);
        for (const auto *const line : m_args.jsLines.values()) {
            script += line;
            script += '\n';
        }
        // remove trailing termination to avoid e.g. "Expected token `)' in line 2" when "… line 1" would make more sense
#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
        script.removeLast();
#else
        script.remove(script.size() - 1, 1);
#endif
    }

    // define function to print error
    const auto printError([](const auto &object) {
        cerr << object.toString().toStdString() << " in line " << SYNCTHINGCTL_JS_INT(object.property(QStringLiteral("lineNumber"))) << endl;
    });

    // evaluate config via JSON.parse()
    auto engine = SYNCTHINGCTL_JS_ENGINE();
    auto globalObject = engine.globalObject();
    const auto configString = QJsonDocument(m_connection.rawConfig()).toJson(QJsonDocument::Indented);
    globalObject.setProperty(QStringLiteral("configStr"), SYNCTHINGCTL_JS_VALUE(QString::fromUtf8(configString)) SYNCTHINGCTL_JS_READONLY);
    const auto configObj = engine.evaluate(QStringLiteral("JSON.parse(configStr)"));
    if (configObj.isError()) {
        cerr << Phrases::Error << "Unable to evaluate the current Syncthing configuration." << Phrases::End;
        printError(configObj);
        cerr << "Syncthing configuration: " << configString.data() << flush;
        return QByteArray();
    }
    globalObject.setProperty(QStringLiteral("config"), configObj SYNCTHINGCTL_JS_UNDELETABLE);

    // provide additional values
    globalObject.setProperty(QStringLiteral("ownID"), m_connection.myId() SYNCTHINGCTL_JS_UNDELETABLE);