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#include <QFile>

#include <QFileOpenEvent>

#include <QTranslator>

#include <QTextCodec>

#include <QLibraryInfo>

#include <QLocale>

#include <QDebug>

#include <QAction>

#include <QFileInfo>

#include <QProxyStyle>

#include <QStyleOption>

#include <QScreen>

#include "Application.h"

#include "MainWindow.h"

#include "RemoteNetwork.h"

#include "Settings.h"

#include "version.h"

#include "sqlitedb.h"

class DB4SProxyStyle final : public QProxyStyle {

public:

DB4SProxyStyle(int toolBarIconSize, qreal dpi, QStyle *style)

: QProxyStyle(style), m_toolBarIconSize(static_cast<int>(toolBarIconSize * dpi / 96))

{

#ifdef Q_OS_WIN

m_smallIconSize = static_cast<int>(11 * dpi / 96);

QStyleOption so(QStyleOption::Version, QStyleOption::SO_MenuItem);

m_menuItemIconSize = style->pixelMetric(PM_SmallIconSize, &so);

#endif

}

int pixelMetric(QStyle::PixelMetric metric,

const QStyleOption *option = nullptr,

const QWidget *widget = nullptr) const override

{

if (metric == PM_ToolBarIconSize) {

return m_toolBarIconSize;

}

#ifdef Q_OS_WIN

else if (metric == PM_SmallIconSize) {

// set maximum icon size for SmallIcon

// Set default MenuIcon size

if (option && option->type == QStyleOption::SO_MenuItem) {

return m_menuItemIconSize;

}

// if we don't return size before QDockWidgets are created,

// any of the widgets with custom stylesheet are rendered with huge float,close buttons

// see void TableBrowserDock::setFocusStyle

return m_smallIconSize;

}

#endif

return QProxyStyle::pixelMetric(metric, option, widget);

}

private:

int m_toolBarIconSize;

#ifdef Q_OS_WIN

int m_menuItemIconSize;

int m_smallIconSize;

#endif

};

void printArgument(const QString& argument, const QString& description)

{

const int fieldWidth = 20;

// Format the usage message so translators do not have to do it themselves

if(argument.length() > fieldWidth) {

qWarning() << qPrintable(QString(" %1").arg(argument, -fieldWidth));

qWarning() << qPrintable(QString(" %1%2").arg("", -fieldWidth).arg(description));

} else {

qWarning() << qPrintable(QString(" %1%2").arg(argument, -fieldWidth).arg(description));

}

Application::Application(int& argc, char** argv) :

QApplication(argc, argv)

{

// Get 'DB4S_SETTINGS_FILE' environment variable

const auto env = qgetenv("DB4S_SETTINGS_FILE");

// If 'DB4S_SETTINGS_FILE' environment variable exists

if(!env.isEmpty())

Settings::setUserSettingsFile(env);

for(int i=1;i<arguments().size();i++)

{

if(arguments().at(i) == "-S" || arguments().at(i) == "--settings")

{

if(++i < arguments().size())

{

if(!env.isEmpty())

{

qWarning() << qPrintable(tr("The user settings file location is replaced with the argument value instead of the environment variable value."));

qWarning() << qPrintable(tr("Ignored environment variable (DB4S_SETTINGS_FILE) value: ") + env);

}

Settings::setUserSettingsFile(arguments().at(i));

}

// Set organisation and application names

setOrganizationName("sqlitebrowser");

setApplicationName("DB Browser for SQLite");

// Set character encoding to UTF8

QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));

// Load translations

bool ok;

QString name = Settings::getValue("General", "language").toString();

// First of all try to load the application translation file.

m_translatorApp = new QTranslator(this);

ok = m_translatorApp->load("sqlb_" + name,

QCoreApplication::applicationDirPath() + "/translations");

// If failed then try to load .qm file from resources

if (ok == false) {

ok = m_translatorApp->load("sqlb_" + name, ":/translations");

}

if (ok == true) {

Settings::setValue("General", "language", name);

installTranslator(m_translatorApp);

// The application translation file has been found and loaded.

// And now try to load a Qt translation file.

// Search path:

// 1) standard Qt translations directory;

// 2) the application translations directory.

m_translatorQt = new QTranslator(this);

ok = m_translatorQt->load("qt_" + name,

QLibraryInfo::location(QLibraryInfo::TranslationsPath));

if (ok == false)

ok = m_translatorQt->load("qt_" + name, "translations");

if (ok == true)

installTranslator(m_translatorQt);

} else {

// Set the correct locale so that the program won't erroneously detect

// a language change when the user toggles settings for the first time.

// (it also prevents the program from always looking for a translation on launch)

Settings::setValue("General", "language", "en_US");

// Don't install a translator for Qt texts if no translator for DB4S texts could be loaded

m_translatorQt = nullptr;

}

// On Windows, add the plugins subdirectory to the list of library directories. We need this

// for Qt to search for more image format plugins.

#ifdef Q_WS_WIN

QApplication::addLibraryPath(QApplication::applicationDirPath() + "/plugins");

#endif

// Work around a bug in QNetworkAccessManager which sporadically causes high pings for Wifi connections

// See https://bugreports.qt.io/browse/QTBUG-40332

qputenv("QT_BEARER_POLL_TIMEOUT", QByteArray::number(INT_MAX));

// Remember default font size

Settings::rememberDefaultFontSize(font().pointSize());

// Parse command line

QString fileToOpen;

std::vector<QString> tableToBrowse;

std::vector<QString> csvToImport;

QStringList sqlToExecute;

bool readOnly = false;

m_showMainWindow = true;

for(int i=1;i<arguments().size();i++)

{

// Check next command line argument

if(arguments().at(i) == "-h" || arguments().at(i) == "--help")

{

// Help

qWarning() << qPrintable(QString("%1: %2 [%3] [<%4>|<%5>|%6]\n").arg(

tr("Usage"), QFileInfo(argv[0]).fileName(),

tr("options"), tr("database"), tr("project"),

tr("csv-file")));

qWarning() << qPrintable(tr("Possible command line arguments:"));

printArgument(QString("-h, --help"),

tr("Show command line options"));

printArgument(QString("-q, --quit"),

tr("Exit application after running scripts"));

printArgument(QString("-s, --sql <%1>").arg(tr("file")),

tr("Execute this SQL file after opening the DB"));

printArgument(QString("--import-csv <%1>").arg(tr("file")),

tr("Import this CSV file into the passed DB or into a new DB"));

printArgument(QString("-t, --table <%1>").arg(tr("table")),

tr("Browse this table, or use it as target of a data import"));

printArgument(QString("-R, --read-only"),

tr("Open database in read-only mode"));

printArgument(QString("-S, --settings <%1>").arg(tr("settings_file")),

tr("Run application based on this settings file"));

printArgument(QString("-o, --option <%1>/<%2>=<%3>").arg(tr("group"), tr("settings"), tr("value")),

tr("Run application with this setting temporarily set to value"));

printArgument(QString("-O, --save-option <%1>/<%2>=<%3>").arg(tr("group"), tr("settings"), tr("value")),

tr("Run application saving this value for this setting"));

printArgument(QString("-v, --version"),

tr("Display the current version"));

printArgument(QString("<%1>").arg(tr("database")),

tr("Open this SQLite database"));

printArgument(QString("<%1>").arg(tr("project")),

tr("Open this project file (*.sqbpro)"));

printArgument(QString("<%1>").arg(tr("csv-file")),

tr("Import this CSV file into an in-memory database"));

m_showMainWindow = false;

} else if(arguments().at(i) == "-v" || arguments().at(i) == "--version") {

qWarning() << qPrintable(versionInformation());

m_showMainWindow = false;

} else if(arguments().at(i) == "-s" || arguments().at(i) == "--sql") {

// Run SQL file: If file exists add it to list of scripts to execute

if(++i >= arguments().size())

qWarning() << qPrintable(tr("The %1 option requires an argument").arg("-s/--sql"));

else if(!QFile::exists(arguments().at(i)))

qWarning() << qPrintable(tr("The file %1 does not exist").arg(arguments().at(i)));

else

sqlToExecute.append(arguments().at(i));

} else if(arguments().at(i) == "-t" || arguments().at(i) == "--table") {

if(++i >= arguments().size())

qWarning() << qPrintable(tr("The %1 option requires an argument").arg("-t/--table"));

else

tableToBrowse.push_back(arguments().at(i));

} else if(arguments().at(i) == "--import-csv") {

if(++i >= arguments().size())

qWarning() << qPrintable(tr("The %1 option requires an argument").arg("--import-csv"));

else if(!QFile::exists(arguments().at(i)))

qWarning() << qPrintable(tr("The file %1 does not exist").arg(arguments().at(i)));

else

csvToImport.push_back(arguments().at(i));

} else if(arguments().at(i) == "-q" || arguments().at(i) == "--quit") {

m_showMainWindow = false;

} else if(arguments().at(i) == "-R" || arguments().at(i) == "--read-only") {

readOnly = true;

} else if(arguments().at(i) == "-S" || arguments().at(i) == "--settings") {

// This option has already been handled above

// For here, only print the error when no parameter value is given

if(++i >= arguments().size())

qWarning() << qPrintable(tr("The -S/--settings option requires an argument. The option is ignored."));

} else if(arguments().at(i) == "-o" || arguments().at(i) == "--option" ||

arguments().at(i) == "-O" || arguments().at(i) == "--save-option") {

const QString optionWarning = tr("The -o/--option and -O/--save-option options require an argument in the form group/setting=value");

bool saveToDisk = arguments().at(i) == "-O" || arguments().at(i) == "--save-option";

if(++i >= arguments().size())

qWarning() << qPrintable(optionWarning);

else {

QStringList option = arguments().at(i).split("=");

if (option.size() != 2)

qWarning() << qPrintable(optionWarning);

else {

QStringList setting = option.at(0).split("/");

if (setting.size() != 2)

qWarning() << qPrintable(optionWarning);

else {

QVariant value;

// Split string lists. This assumes they are always named "*list"

if (setting.at(1).endsWith("list", Qt::CaseInsensitive))

value = option.at(1).split(",");

else

value = option.at(1);

Settings::setValue(setting.at(0).toStdString(), setting.at(1).toStdString(), value, saveToDisk);

}

} else {

// Other: Check if it's a valid file name

if(QFile::exists(arguments().at(i)))

fileToOpen = arguments().at(i);

else

qWarning() << qPrintable(tr("Invalid option/non-existent file: %1").arg(arguments().at(i)));

}

if(!m_showMainWindow) {

m_mainWindow = nullptr;

return;

}

// Set StyleProxy

QScreen *screen = primaryScreen();

setStyle(new DB4SProxyStyle(18, screen != nullptr ? screen->logicalDotsPerInch() : 96, style()));

// Skip db/project autoLoadLastDBFileAtStartup if we have file passed from the cli

Settings::setValue("tmp", "fileWillBeOpenedFromCLI", !fileToOpen.isEmpty(), false);

// Show main window

m_mainWindow = new MainWindow();

m_mainWindow->show();

connect(this, &Application::lastWindowClosed, this, &Application::quit);

// Open database if one was specified

if(fileToOpen.size())

{

if(m_mainWindow->fileOpen(fileToOpen, false, readOnly))

{

// If database could be opened run the SQL scripts

for(const QString& f : sqlToExecute)

{

QFile file(f);

if(file.open(QIODevice::ReadOnly))

{

m_mainWindow->getDb().executeMultiSQL(file.readAll(), false, true);

file.close();

}

if(!sqlToExecute.isEmpty())

m_mainWindow->refresh();

// Jump to table if the -t/--table parameter was set

for(const QString& t : tableToBrowse)

m_mainWindow->switchToBrowseDataTab(sqlb::ObjectIdentifier("main", t.toStdString()));

if(!tableToBrowse.empty())

m_mainWindow->refresh();

}

if(!csvToImport.empty()) {

if(tableToBrowse.empty()) {

m_mainWindow->importCSVfiles(csvToImport);

} else {

m_mainWindow->importCSVfiles(csvToImport, tableToBrowse.front());

}

Application::~Application()

{

if(m_mainWindow)

delete m_mainWindow;

Settings::sync();

}

bool Application::event(QEvent* event)

{

switch(event->type())

{

case QEvent::FileOpen:

m_mainWindow->fileOpen(static_cast<QFileOpenEvent*>(event)->file());

return true;

default:

return QApplication::event(event);

}

QString Application::versionString()

{

// Nightly builds use a patch number of 99, and for these we include the build date in the version string. For

// our release versions (which use any other patch number) we don't include the build date. This should avoid

// confusion about what is more important, version number or build date, and about different build dates for

// the same version. This also should help making release builds reproducible out of the box.

#if PATCH_VERSION == 99

return QString("%1 (%2)").arg(APP_VERSION, __DATE__);

#else

return QString("%1").arg(APP_VERSION);

#endif

}

QString Application::versionInformation()

{

QString sqlite_version, sqlcipher_version;

DBBrowserDB::getSqliteVersion(sqlite_version, sqlcipher_version);

if(sqlcipher_version.isNull())

sqlite_version = tr("SQLite Version ") + sqlite_version;

else

sqlite_version = tr("SQLCipher Version %1 (based on SQLite %2)").arg(sqlcipher_version, sqlite_version);

return

tr("DB Browser for SQLite Version %1.").arg(versionString() + "\n" +

tr("Last commit hash when built: %1").arg(GIT_COMMIT_HASH) + "\n\n" +

tr("Built for %1, running on %2").arg(QSysInfo::buildAbi(), QSysInfo::currentCpuArchitecture()) + "\n" +

tr("Qt Version %1").arg(qVersion()) + "\n" +

sqlite_version

);

}

void Application::reloadSettings()

{

// Network settings

RemoteNetwork::get().reloadSettings();

// Font settings

QFont f = font();

f.setPointSize(Settings::getValue("General", "fontsize").toInt());

setFont(f);

}

// Functions for documenting the shortcuts in the user interface using native names

static QString shortcutsTip(const QList<QKeySequence>& keys)

{

QString tip;

if (!keys.isEmpty()) {

tip = " [";

for (const auto& shortcut : keys)

tip.append(shortcut.toString(QKeySequence::NativeText) + ", ");

tip.chop(2);

tip.append("]");

}

return tip;

}

void addShortcutsTooltip(QAction* action, const QList<QKeySequence>& extraKeys)

{

if (!action->shortcuts().isEmpty() || !extraKeys.isEmpty())

action->setToolTip(action->toolTip() + shortcutsTip(action->shortcuts() + extraKeys));

}