aircraftmodelloaderxplane.cpp

// SPDX-FileCopyrightText: Copyright (C) 2015 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
#include "misc/simulation/xplane/aircraftmodelloaderxplane.h"
 
#include <string.h>
 
#include <algorithm>
#include <functional>
 
#include <QChar>
#include <QDateTime>
#include <QDir>
#include <QDirIterator>
#include <QFile>
#include <QFileInfo>
#include <QFlags>
#include <QIODevice>
#include <QList>
#include <QMap>
#include <QRegularExpression>
#include <QStringBuilder>
#include <QTextStream>
 
#include "config/buildconfig.h"
#include "misc/aviation/aircrafticaocode.h"
#include "misc/aviation/airlineicaocode.h"
#include "misc/aviation/livery.h"
#include "misc/directoryutils.h"
#include "misc/fileutils.h"
#include "misc/logmessage.h"
#include "misc/simulation/aircraftmodel.h"
#include "misc/simulation/aircraftmodelutils.h"
#include "misc/simulation/distributor.h"
#include "misc/simulation/xplane/qtfreeutils.h"
#include "misc/simulation/xplane/xplaneutil.h"
#include "misc/statusmessage.h"
#include "misc/stringutils.h"
#include "misc/verify.h"
#include "misc/worker.h"
 
using namespace swift::config;
using namespace swift::misc;
using namespace swift::misc::aviation;
using namespace swift::misc::simulation;
using namespace swift::misc::network;
 
namespace swift::misc::simulation::xplane
{
    static void normalizePath(QString &path)
    {
        for (auto &e : path)
        {
            if (e == '/' || e == ':' || e == '\\') { e = '/'; }
        }
    }
 
    static QString descriptionForFlyableModel(const CAircraftModel &model)
    {
        if (!model.getName().isEmpty())
        {
            if (model.getDistributor().hasDescription() &&
                !model.getName().contains(model.getDistributor().getDescription()))
            {
                return u"[ACF] " % model.getName() % u" by " % model.getDistributor().getDescription();
            }
            else { return u"[ACF] " % model.getName(); }
        }
        else if (model.hasAircraftDesignator())
        {
            if (model.getDistributor().hasDescription())
            {
                return u"[ACF] " % model.getAircraftIcaoCodeDesignator() % u" by " %
                       model.getDistributor().getDescription();
            }
            else { return u"[ACF] " % model.getAircraftIcaoCodeDesignator(); }
        }
        return QStringLiteral("[ACF]");
    }
 
    CAircraftModelLoaderXPlane::CAircraftModelLoaderXPlane(QObject *parent)
        : IAircraftModelLoader(CSimulatorInfo::xplane(), parent)
    {}
 
    CAircraftModelLoaderXPlane::~CAircraftModelLoaderXPlane()
    {
        // that should be safe as long as the worker uses deleteLater (which it does)
        if (m_parserWorker) { m_parserWorker->waitForFinished(); }
    }
 
    void CAircraftModelLoaderXPlane::startLoadingFromDisk(LoadMode mode,
                                                          const ModelConsolidationCallback &modelConsolidation,
                                                          const QStringList &modelDirectories)
    {
        const CSimulatorInfo simulator = CSimulatorInfo::xplane();
        const QStringList modelDirs = this->getInitializedModelDirectories(modelDirectories, simulator);
        const QStringList excludedDirectoryPatterns(
            m_settings.getModelExcludeDirectoryPatternsOrDefault(simulator)); // copy
 
        if (modelDirs.isEmpty())
        {
            this->clearCachedModels(CSimulatorInfo::xplane());
            emit this->loadingFinished(
                CStatusMessage(this, CStatusMessage::SeverityError, u"XPlane model directories '%1' are empty")
                    << modelDirectories.join(", "),
                simulator, ParsedData);
            return;
        }
 
        if (mode.testFlag(LoadInBackground))
        {
            if (m_parserWorker && !m_parserWorker->isFinished()) { return; }
            emit this->diskLoadingStarted(simulator, mode);
 
            m_parserWorker = CWorker::fromTask(this, "CAircraftModelLoaderXPlane::performParsing",
                                               [this, modelDirs, excludedDirectoryPatterns, modelConsolidation]() {
                                                   auto models =
                                                       this->performParsing(modelDirs, excludedDirectoryPatterns);
                                                   if (modelConsolidation) { modelConsolidation(models, true); }
                                                   return models;
                                               });
            m_parserWorker->thenWithResult<CAircraftModelList>(this, [=](const auto &models) {
                this->updateInstalledModels(models);
                m_loadingMessages.freezeOrder();
                emit this->loadingFinished(m_loadingMessages, simulator, ParsedData);
            });
        }
        else if (mode.testFlag(LoadDirectly))
        {
            emit this->diskLoadingStarted(simulator, mode);
            CAircraftModelList models(this->performParsing(modelDirs, excludedDirectoryPatterns));
            this->updateInstalledModels(models);
        }
    }
 
    bool CAircraftModelLoaderXPlane::isLoadingFinished() const
    {
        return !m_parserWorker || m_parserWorker->isFinished();
    }
 
    void CAircraftModelLoaderXPlane::updateInstalledModels(const CAircraftModelList &models)
    {
        this->setModelsForSimulator(models, CSimulatorInfo::xplane());
        const CStatusMessage m = CStatusMessage(this, CStatusMessage::SeverityInfo, u"XPlane updated '%1' models")
                                 << models.size();
        m_loadingMessages.push_back(m);
    }
 
    QString CAircraftModelLoaderXPlane::CSLPlane::getModelName() const
    {
        QString modelName = dirNames.join(' ') % u' ' % objectName;
        if (objectVersion == OBJ7) { modelName += u' ' % textureName; }
        return std::move(modelName).trimmed();
    }
 
    CAircraftModelList CAircraftModelLoaderXPlane::performParsing(const QStringList &rootDirectories,
                                                                  const QStringList &excludeDirectories)
    {
        CAircraftModelList allModels;
        for (const QString &rootDirectory : rootDirectories)
        {
            allModels.push_back(parseCslPackages(rootDirectory, excludeDirectories));
            allModels.push_back(parseFlyableAirplanes(rootDirectory, excludeDirectories));
        }
        return allModels;
    }
 
    void CAircraftModelLoaderXPlane::addUniqueModel(const CAircraftModel &model, CAircraftModelList &models)
    {
        if (models.containsModelString(model.getModelString()))
        {
            const CStatusMessage m =
                CStatusMessage(this).warning(
                    u"XPlane model '%1' exists already! Potential model string conflict! Ignoring it.")
                << model.getModelString();
            m_loadingMessages.push_back(m);
        }
        models.push_back(model);
    }
 
    CAircraftModelList CAircraftModelLoaderXPlane::parseFlyableAirplanes(const QString &rootDirectory,
                                                                         const QStringList &excludeDirectories)
    {
        Q_UNUSED(excludeDirectories)
        if (rootDirectory.isEmpty()) { return {}; }
 
        QDir searchPath(rootDirectory, fileFilterFlyable());
        QDirIterator aircraftIt(searchPath, QDirIterator::Subdirectories | QDirIterator::FollowSymlinks);
 
        emit loadingProgress(this->getSimulator(),
                             QStringLiteral("Parsing flyable airplanes in '%1'").arg(rootDirectory), -1);
 
        CAircraftModelList installedModels;
        while (aircraftIt.hasNext())
        {
            aircraftIt.next();
            if (CFileUtils::isExcludedDirectory(aircraftIt.fileInfo(), excludeDirectories, Qt::CaseInsensitive))
            {
                continue;
            }
 
            using namespace swift::misc::simulation::xplane::qtfreeutils;
            AcfProperties acfProperties = extractAcfProperties(aircraftIt.filePath().toStdString());
 
            const CDistributor dist({}, QString::fromStdString(acfProperties.author), {}, {}, CSimulatorInfo::XPLANE);
            CAircraftModel model;
            model.setAircraftIcaoCode(QString::fromStdString(acfProperties.aircraftIcaoCode));
            model.setDescription(QString::fromStdString(acfProperties.modelDescription));
            model.setName(QString::fromStdString(acfProperties.modelName));
            model.setDistributor(dist);
            model.setModelString(QString::fromStdString(acfProperties.modelString));
            if (!model.hasDescription()) { model.setDescription(descriptionForFlyableModel(model)); }
            model.setModelType(CAircraftModel::TypeOwnSimulatorModel);
            model.setSimulator(CSimulatorInfo::xplane());
            model.setFileDetailsAndTimestamp(aircraftIt.fileInfo());
            model.setModelMode(CAircraftModel::Exclude);
            addUniqueModel(model, installedModels);
 
            const QString baseModelString = model.getModelString();
            QDirIterator liveryIt(
                CFileUtils::appendFilePaths(aircraftIt.fileInfo().canonicalPath(), QStringLiteral("liveries")),
                QDir::Dirs | QDir::NoDotAndDotDot);
            emit this->loadingProgress(
                this->getSimulator(),
                QStringLiteral("Parsing flyable liveries in '%1'").arg(aircraftIt.fileInfo().canonicalPath()), -1);
            while (liveryIt.hasNext())
            {
                liveryIt.next();
                model.setModelString(baseModelString % u' ' % liveryIt.fileName());
                addUniqueModel(model, installedModels);
            }
        }
        return installedModels;
    }
 
    CAircraftModelList CAircraftModelLoaderXPlane::parseCslPackages(const QString &rootDirectory,
                                                                    const QStringList &excludeDirectories)
    {
        Q_UNUSED(excludeDirectories);
        if (rootDirectory.isEmpty()) { return {}; }
 
        m_cslPackages.clear();
 
        QDir searchPath(rootDirectory, fileFilterCsl());
        QDirIterator it(searchPath, QDirIterator::Subdirectories);
        while (it.hasNext())
        {
            QString packageFile = it.next();
            if (CFileUtils::isExcludedDirectory(it.filePath(), excludeDirectories)) { continue; }
 
            const QString packageFilePath = it.fileInfo().absolutePath();
            QFile file(packageFile);
            file.open(QIODevice::ReadOnly);
            QString content;
 
            QTextStream ts(&file);
            content.append(ts.readAll());
            file.close();
 
            const auto package = parsePackageHeader(packageFilePath, content);
            if (package.hasValidHeader()) m_cslPackages.push_back(package);
        }
 
        CAircraftModelList installedModels;
 
        // Now we do a full run
        for (auto &package : m_cslPackages)
        {
            const QString packageFile = CFileUtils::appendFilePaths(package.path, QStringLiteral("xsb_aircraft.txt"));
            emit this->loadingProgress(this->getSimulator(), QStringLiteral("Parsing CSL '%1'").arg(packageFile), -1);
 
            QFile file(packageFile);
            file.open(QIODevice::ReadOnly);
            QString content;
 
            QTextStream ts(&file);
            content.append(ts.readAll());
            file.close();
            parseFullPackage(content, package);
 
            for (const auto &plane : std::as_const(package.planes))
            {
                if (installedModels.containsModelString(plane.getModelName()))
                {
                    const CStatusMessage msg =
                        CStatusMessage(this).warning(
                            u"XPlane model '%1' exists already! Potential model string conflict! Ignoring it.")
                        << plane.getModelName();
                    m_loadingMessages.push_back(msg);
                    continue;
                }
 
                CAircraftModel model(plane.getModelName(), CAircraftModel::TypeOwnSimulatorModel);
                const CAircraftIcaoCode icao(plane.icao);
                const QFileInfo modelFileInfo(plane.filePath);
                model.setFileDetailsAndTimestamp(modelFileInfo);
                model.setAircraftIcaoCode(icao);
 
                if (CBuildConfig::isLocalDeveloperDebugBuild())
                {
                    SWIFT_AUDIT_X(modelFileInfo.exists(), Q_FUNC_INFO, "Model does NOT exist");
                }
 
                CLivery livery;
                livery.setCombinedCode(plane.livery);
                CAirlineIcaoCode airline(plane.airline);
                livery.setAirlineIcaoCode(airline);
                model.setLivery(livery);
 
                model.setSimulator(CSimulatorInfo::xplane());
                QString modelDescription("[CSL]");
                if (plane.objectVersion == CSLPlane::OBJ7) { modelDescription += "[OBJ7]"; }
                else if (plane.objectVersion == CSLPlane::OBJ8) { modelDescription += "[OBJ8]"; }
                model.setDescription(modelDescription);
                installedModels.push_back(model);
            }
        }
        return installedModels;
    }
 
    bool CAircraftModelLoaderXPlane::doPackageSub(QString &ioPath)
    {
        for (auto i = m_cslPackages.cbegin(); i != m_cslPackages.cend(); ++i)
        {
            if (strncmp(qPrintable(i->name), qPrintable(ioPath), static_cast<size_t>(i->name.size())) == 0)
            {
                ioPath.remove(0, i->name.size());
                ioPath.insert(0, i->path);
                return true;
            }
        }
        return false;
    }
 
    bool CAircraftModelLoaderXPlane::parseExportCommand(const QStringList &tokens, CSLPackage &package,
                                                        const QString &path, int lineNum)
    {
        if (tokens.size() != 2)
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : EXPORT_NAME command requires 1 argument.")
                << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
 
        auto p = std::find_if(m_cslPackages.cbegin(), m_cslPackages.cend(),
                              [&tokens](const CSLPackage &p) { return p.name == tokens[1]; });
        if (p == m_cslPackages.cend())
        {
            package.path = path;
            package.name = tokens[1];
            return true;
        }
        else
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"XPlane package name '%1' already in use by '%2' reqested by use by '%3'")
                << tokens[1] << p->path << path;
            m_loadingMessages.push_back(m);
            return false;
        }
    }
 
    bool CAircraftModelLoaderXPlane::parseDependencyCommand(const QStringList &tokens, CSLPackage &package,
                                                            const QString &path, int lineNum)
    {
        Q_UNUSED(package);
        if (tokens.size() != 2)
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : DEPENDENCY command requires 1 argument.")
                << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
 
        if (std::count_if(m_cslPackages.cbegin(), m_cslPackages.cend(),
                          [&tokens](const CSLPackage &p) { return p.name == tokens[1]; }) == 0)
        {
            const CStatusMessage m = CStatusMessage(this).error(
                                         u"XPlane required package %1 not found. Aborting processing of this package.")
                                     << tokens[1];
            m_loadingMessages.push_back(m);
            return false;
        }
 
        return true;
    }
 
    QString readLineFrom(QTextStream &stream)
    {
        QString line;
        do {
            line = stream.readLine();
        }
        while (line.isEmpty() && !stream.atEnd());
        return line;
    }
 
    bool CAircraftModelLoaderXPlane::parseObjectCommand(const QStringList &, CSLPackage &package, const QString &path,
                                                        int lineNum)
    {
        package.planes.push_back(CSLPlane());
 
        const auto m = CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : Unsupported legacy CSL format.")
                       << path << lineNum;
        m_loadingMessages.push_back(m);
        return false;
    }
 
    bool CAircraftModelLoaderXPlane::parseTextureCommand(const QStringList &, CSLPackage &package, const QString &path,
                                                         int lineNum)
    {
        if (!package.planes.isEmpty() && !package.planes.back().hasErrors)
        {
            const auto m = CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : Unsupported legacy CSL format.")
                           << path << lineNum;
            m_loadingMessages.push_back(m);
        }
        return false;
    }
 
    bool CAircraftModelLoaderXPlane::parseAircraftCommand(const QStringList &, CSLPackage &package, const QString &path,
                                                          int lineNum)
    {
        package.planes.push_back(CSLPlane());
 
        const auto m = CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : Unsupported legacy CSL format.")
                       << path << lineNum;
        m_loadingMessages.push_back(m);
        return false;
    }
 
    bool CAircraftModelLoaderXPlane::parseObj8AircraftCommand(const QStringList &tokens, CSLPackage &package,
                                                              const QString &path, int lineNum)
    {
        package.planes.push_back(CSLPlane());
 
        // OBJ8_AIRCRAFT <path>
        if (tokens.size() != 2)
        {
            const CStatusMessage m = CStatusMessage(this).warning(
                                         u"%1/xsb_aircraft.txt Line %2 : OBJ8_AIRCARFT command requires 1 argument.")
                                     << path << lineNum;
            m_loadingMessages.push_back(m);
            if (tokens.size() < 2) { return false; }
        }
 
        package.planes.back().objectName = tokens[1];
        package.planes.back().objectVersion = CSLPlane::OBJ8;
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseObj8Command(const QStringList &tokens, CSLPackage &package,
                                                      const QString &path, int lineNum)
    {
        // OBJ8 <group> <animate YES|NO> <filename>
        if (tokens.size() != 4)
        {
            if (tokens.size() == 5 || tokens.size() == 6)
            {
                const CStatusMessage m =
                    CStatusMessage(this).error(
                        u"%1/xsb_aircraft.txt Line %2 : Unsupported IVAO CSL format - consider using CSL2XSB.")
                    << path << lineNum;
                m_loadingMessages.push_back(m);
            }
            else
            {
                const CStatusMessage m =
                    CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : OBJ8 command takes 3 arguments.")
                    << path << lineNum;
                m_loadingMessages.push_back(m);
            }
            return false;
        }
        if (package.planes.isEmpty())
        {
            m_loadingMessages.push_back(
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : invalid position for command.")
                << path << lineNum);
            return false;
        }
 
        if (tokens[1] != "SOLID") { return true; }
 
        QString relativePath(tokens[3]);
        normalizePath(relativePath);
        QString fullPath(relativePath);
        if (!doPackageSub(fullPath))
        {
            const CStatusMessage m = CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : package not found.")
                                     << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
 
        // just the name of the dir containing xsbaircraft.txt
        QString packageRootDir = package.path.mid(package.path.lastIndexOf('/') + 1);
        package.planes.back().dirNames = QStringList { packageRootDir };
 
        package.planes.back().filePath = fullPath;
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseHasGearCommand(const QStringList &tokens, CSLPackage &package,
                                                         const QString &path, int lineNum)
    {
        Q_UNUSED(tokens)
        Q_UNUSED(package)
        Q_UNUSED(path)
        Q_UNUSED(lineNum)
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseIcaoCommand(const QStringList &tokens, CSLPackage &package,
                                                      const QString &path, int lineNum)
    {
        // ICAO <code>
        if (tokens.size() != 2)
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : ICAO command requires 1 argument.")
                << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
        if (package.planes.isEmpty())
        {
            m_loadingMessages.push_back(
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : invalid position for command.")
                << path << lineNum);
            return false;
        }
 
        QString icao = tokens[1];
        package.planes.back().icao = icao;
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseAirlineCommand(const QStringList &tokens, CSLPackage &package,
                                                         const QString &path, int lineNum)
    {
        // AIRLINE <code> <airline>
        if (tokens.size() != 3)
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : AIRLINE command requires 2 arguments.")
                << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
        if (package.planes.isEmpty())
        {
            m_loadingMessages.push_back(
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : invalid position for command.")
                << path << lineNum);
            return false;
        }
 
        QString icao = tokens[1];
        package.planes.back().icao = icao;
        QString airline = tokens[2];
        package.planes.back().airline = airline;
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseLiveryCommand(const QStringList &tokens, CSLPackage &package,
                                                        const QString &path, int lineNum)
    {
        // LIVERY <code> <airline> <livery>
        if (tokens.size() != 4)
        {
            const CStatusMessage m =
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : LIVERY command requires 3 arguments.")
                << path << lineNum;
            m_loadingMessages.push_back(m);
            return false;
        }
        if (package.planes.isEmpty())
        {
            m_loadingMessages.push_back(
                CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : invalid position for command.")
                << path << lineNum);
            return false;
        }
 
        QString icao = tokens[1];
        package.planes.back().icao = icao;
        QString airline = tokens[2];
        package.planes.back().airline = airline;
        QString livery = tokens[3];
        package.planes.back().livery = livery;
        return true;
    }
 
    bool CAircraftModelLoaderXPlane::parseDummyCommand(const QStringList & /* tokens */, CSLPackage & /* package */,
                                                       const QString & /* path */, int /*lineNum*/)
    {
        return true;
    }
 
    CAircraftModelLoaderXPlane::CSLPackage CAircraftModelLoaderXPlane::parsePackageHeader(const QString &path,
                                                                                          const QString &content)
    {
        using command = std::function<bool(const QStringList &, CSLPackage &, const QString &, int)>;
        using namespace std::placeholders;
 
        const QMap<QString, command> commands {
            { "EXPORT_NAME", std::bind(&CAircraftModelLoaderXPlane::parseExportCommand, this, _1, _2, _3, _4) }
        };
 
        CSLPackage package;
        int lineNum = 0;
 
        QString localCopy(content);
        QTextStream in(&localCopy);
        while (!in.atEnd())
        {
            ++lineNum;
            QString line = in.readLine();
            auto tokens = splitString(line, [](QChar c) { return c.isSpace(); });
            if (!tokens.empty())
            {
                auto it = commands.find(tokens[0]);
                if (it != commands.end())
                {
                    bool result = it.value()(tokens, package, path, lineNum);
                    // Stop loop once we found EXPORT command
                    if (result) break;
                }
            }
        }
        return package;
    }
 
    void CAircraftModelLoaderXPlane::parseFullPackage(const QString &content, CSLPackage &package)
    {
        using command = std::function<bool(const QStringList &, CSLPackage &, const QString &, int)>;
        using namespace std::placeholders;
 
        const QMap<QString, command> commands {
            { "EXPORT_NAME", std::bind(&CAircraftModelLoaderXPlane::parseDummyCommand, this, _1, _2, _3, _4) },
            { "DEPENDENCY", std::bind(&CAircraftModelLoaderXPlane::parseDependencyCommand, this, _1, _2, _3, _4) },
            { "OBJECT", std::bind(&CAircraftModelLoaderXPlane::parseObjectCommand, this, _1, _2, _3, _4) },
            { "TEXTURE", std::bind(&CAircraftModelLoaderXPlane::parseTextureCommand, this, _1, _2, _3, _4) },
            { "AIRCRAFT", std::bind(&CAircraftModelLoaderXPlane::parseAircraftCommand, this, _1, _2, _3, _4) },
            { "OBJ8_AIRCRAFT", std::bind(&CAircraftModelLoaderXPlane::parseObj8AircraftCommand, this, _1, _2, _3, _4) },
            { "OBJ8", std::bind(&CAircraftModelLoaderXPlane::parseObj8Command, this, _1, _2, _3, _4) },
            { "HASGEAR", std::bind(&CAircraftModelLoaderXPlane::parseHasGearCommand, this, _1, _2, _3, _4) },
            { "ICAO", std::bind(&CAircraftModelLoaderXPlane::parseIcaoCommand, this, _1, _2, _3, _4) },
            { "AIRLINE", std::bind(&CAircraftModelLoaderXPlane::parseAirlineCommand, this, _1, _2, _3, _4) },
            { "LIVERY", std::bind(&CAircraftModelLoaderXPlane::parseLiveryCommand, this, _1, _2, _3, _4) },
            { "VERT_OFFSET", std::bind(&CAircraftModelLoaderXPlane::parseDummyCommand, this, _1, _2, _3, _4) },
        };
 
        int lineNum = 0;
 
        QString localCopy(content);
        QTextStream in(&localCopy);
 
        while (!in.atEnd())
        {
            ++lineNum;
            QString line = in.readLine();
            if (line.isEmpty() || line[0] == '#') continue;
            auto tokens = splitString(line, [](QChar c) { return c.isSpace(); });
            if (!tokens.empty())
            {
                auto it = commands.find(tokens[0]);
                if (it != commands.end())
                {
                    bool result = it.value()(tokens, package, package.path, lineNum);
                    if (!result)
                    {
                        if (!package.planes.empty()) { package.planes.back().hasErrors = true; }
                    }
                }
                else
                {
                    const CStatusMessage m =
                        CStatusMessage(this).error(u"%1/xsb_aircraft.txt Line %2 : Unrecognized CSL command: '%3'")
                        << package.path << lineNum << tokens[0];
                    m_loadingMessages.push_back(m);
                }
            }
        }
 
        // Remove all planes with errors
        auto it = std::remove_if(package.planes.begin(), package.planes.end(),
                                 [](const CSLPlane &plane) { return plane.hasErrors; });
        package.planes.erase(it, package.planes.end());
    }
 
    const QString &CAircraftModelLoaderXPlane::fileFilterFlyable()
    {
        static const QString f("*.acf");
        return f;
    }
 
    const QString &CAircraftModelLoaderXPlane::fileFilterCsl()
    {
        static const QString f("xsb_aircraft.txt");
        return f;
    }
 
} // namespace swift::misc::simulation::xplane