| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #include "qsettings.h" |
| #ifndef QT_NO_SETTINGS |
| |
| #include "qsettings_p.h" |
| #ifndef QT_NO_QOBJECT |
| #include "qcoreapplication.h" |
| #include <QFile> |
| #endif // QT_NO_QOBJECT |
| #include <QDebug> |
| |
| #include <QFileInfo> |
| #include <QDir> |
| #include <emscripten.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| static bool isReadReady = false; |
| |
| class QWasmSettingsPrivate : public QConfFileSettingsPrivate |
| { |
| public: |
| QWasmSettingsPrivate(QSettings::Scope scope, const QString &organization, |
| const QString &application); |
| ~QWasmSettingsPrivate(); |
| |
| bool get(const QString &key, QVariant *value) const override; |
| QStringList children(const QString &prefix, ChildSpec spec) const override; |
| void clear() override; |
| void sync() override; |
| void flush() override; |
| bool isWritable() const override; |
| |
| void syncToLocal(const char *data, int size); |
| void loadLocal(const QByteArray &filename); |
| void setReady(); |
| void initAccess() override; |
| |
| private: |
| QString databaseName; |
| QString id; |
| }; |
| |
| static void QWasmSettingsPrivate_onLoad(void *userData, void *dataPtr, int size) |
| { |
| QWasmSettingsPrivate *wasm = reinterpret_cast<QWasmSettingsPrivate *>(userData); |
| |
| QFile file(wasm->fileName()); |
| QFileInfo fileInfo(wasm->fileName()); |
| QDir dir(fileInfo.path()); |
| if (!dir.exists()) |
| dir.mkpath(fileInfo.path()); |
| |
| if (file.open(QFile::WriteOnly)) { |
| file.write(reinterpret_cast<char *>(dataPtr), size); |
| file.close(); |
| wasm->setReady(); |
| } |
| } |
| |
| static void QWasmSettingsPrivate_onError(void *userData) |
| { |
| QWasmSettingsPrivate *wasm = reinterpret_cast<QWasmSettingsPrivate *>(userData); |
| if (wasm) |
| wasm->setStatus(QSettings::AccessError); |
| } |
| |
| static void QWasmSettingsPrivate_onStore(void *userData) |
| { |
| QWasmSettingsPrivate *wasm = reinterpret_cast<QWasmSettingsPrivate *>(userData); |
| if (wasm) |
| wasm->setStatus(QSettings::NoError); |
| } |
| |
| static void QWasmSettingsPrivate_onCheck(void *userData, int exists) |
| { |
| QWasmSettingsPrivate *wasm = reinterpret_cast<QWasmSettingsPrivate *>(userData); |
| if (wasm) { |
| if (exists) |
| wasm->loadLocal(wasm->fileName().toLocal8Bit()); |
| else |
| wasm->setReady(); |
| } |
| } |
| |
| QSettingsPrivate *QSettingsPrivate::create(QSettings::Format format, |
| QSettings::Scope scope, |
| const QString &organization, |
| const QString &application) |
| { |
| Q_UNUSED(format) |
| if (organization == QLatin1String("Qt")) |
| { |
| QString organizationDomain = QCoreApplication::organizationDomain(); |
| QString applicationName = QCoreApplication::applicationName(); |
| |
| QSettingsPrivate *newSettings; |
| newSettings = new QWasmSettingsPrivate(scope, organizationDomain, applicationName); |
| |
| newSettings->beginGroupOrArray(QSettingsGroup(normalizedKey(organization))); |
| if (!application.isEmpty()) |
| newSettings->beginGroupOrArray(QSettingsGroup(normalizedKey(application))); |
| |
| return newSettings; |
| } |
| return new QWasmSettingsPrivate(scope, organization, application); |
| } |
| |
| QWasmSettingsPrivate::QWasmSettingsPrivate(QSettings::Scope scope, const QString &organization, |
| const QString &application) |
| : QConfFileSettingsPrivate(QSettings::NativeFormat, scope, organization, application) |
| { |
| setStatus(QSettings::AccessError); // access error until sandbox gets loaded |
| databaseName = organization; |
| id = application; |
| |
| emscripten_idb_async_exists("/home/web_user", |
| fileName().toLocal8Bit(), |
| reinterpret_cast<void*>(this), |
| QWasmSettingsPrivate_onCheck, |
| QWasmSettingsPrivate_onError); |
| } |
| |
| QWasmSettingsPrivate::~QWasmSettingsPrivate() |
| { |
| } |
| |
| void QWasmSettingsPrivate::initAccess() |
| { |
| if (isReadReady) |
| QConfFileSettingsPrivate::initAccess(); |
| } |
| |
| bool QWasmSettingsPrivate::get(const QString &key, QVariant *value) const |
| { |
| if (isReadReady) |
| return QConfFileSettingsPrivate::get(key, value); |
| |
| return false; |
| } |
| |
| QStringList QWasmSettingsPrivate::children(const QString &prefix, ChildSpec spec) const |
| { |
| return QConfFileSettingsPrivate::children(prefix, spec); |
| } |
| |
| void QWasmSettingsPrivate::clear() |
| { |
| QConfFileSettingsPrivate::clear(); |
| emscripten_idb_async_delete("/home/web_user", |
| fileName().toLocal8Bit(), |
| reinterpret_cast<void*>(this), |
| QWasmSettingsPrivate_onStore, |
| QWasmSettingsPrivate_onError); |
| } |
| |
| void QWasmSettingsPrivate::sync() |
| { |
| QConfFileSettingsPrivate::sync(); |
| |
| QFile file(fileName()); |
| if (file.open(QFile::ReadOnly)) { |
| QByteArray dataPointer = file.readAll(); |
| |
| emscripten_idb_async_store("/home/web_user", |
| fileName().toLocal8Bit(), |
| reinterpret_cast<void *>(dataPointer.data()), |
| dataPointer.length(), |
| reinterpret_cast<void*>(this), |
| QWasmSettingsPrivate_onStore, |
| QWasmSettingsPrivate_onError); |
| } |
| } |
| |
| void QWasmSettingsPrivate::flush() |
| { |
| sync(); |
| } |
| |
| bool QWasmSettingsPrivate::isWritable() const |
| { |
| return isReadReady && QConfFileSettingsPrivate::isWritable(); |
| } |
| |
| void QWasmSettingsPrivate::syncToLocal(const char *data, int size) |
| { |
| QFile file(fileName()); |
| |
| if (file.open(QFile::WriteOnly)) { |
| file.write(data, size + 1); |
| QByteArray data = file.readAll(); |
| |
| emscripten_idb_async_store("/home/web_user", |
| fileName().toLocal8Bit(), |
| reinterpret_cast<void *>(data.data()), |
| data.length(), |
| reinterpret_cast<void*>(this), |
| QWasmSettingsPrivate_onStore, |
| QWasmSettingsPrivate_onError); |
| setReady(); |
| } |
| } |
| |
| void QWasmSettingsPrivate::loadLocal(const QByteArray &filename) |
| { |
| emscripten_idb_async_load("/home/web_user", |
| filename.data(), |
| reinterpret_cast<void*>(this), |
| QWasmSettingsPrivate_onLoad, |
| QWasmSettingsPrivate_onError); |
| } |
| |
| void QWasmSettingsPrivate::setReady() |
| { |
| isReadReady = true; |
| setStatus(QSettings::NoError); |
| QConfFileSettingsPrivate::initAccess(); |
| } |
| |
| QT_END_NAMESPACE |
| #endif // QT_NO_SETTINGS |