goldendict-ng/main.cc

/* This file is (c) 2008-2011 Konstantin Isakov <ikm@goldendict.org>
 * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */

#include <stdio.h>
#include <QIcon>
#include "gdappstyle.hh"
#include "mainwindow.hh"
#include "config.hh"

#include "processwrapper.hh"
#include "hotkeywrapper.hh"

//#define __DO_DEBUG

#ifdef __DO_DEBUG
#include <sys/resource.h>
#endif

#include "termination.hh"

#include <QWebSecurityOrigin>

int main( int argc, char ** argv )
{
  #ifdef Q_OS_MAC
    setenv("LANG", "en_US.UTF-8", 1);
  #endif

  // The following clause fixes a race in the MinGW runtime where throwing
  // exceptions for the first time in several threads simultaneously can cause
  // an abort(). This code throws first exception in a safe, single-threaded
  // manner, thus avoiding that race.
  {
    class Dummy {};

    try
    { throw Dummy(); }
    catch( Dummy )
    {}
  }

  if ( argc == 3 && strcmp( argv[ 1 ], "--show-error-file" ) == 0 )
  {
    // The program has crashed -- show a message about it

    QApplication app( argc, argv );

    QFile errFile( argv[ 2 ] );

    QString errorText;

    if ( errFile.open( QFile::ReadOnly ) )
      errorText = QString::fromUtf8( errFile.readAll() );

    errorText += "\n" + QString( "This information is located in file %1, "
                                 "which will be removed once you close this dialog.").arg( errFile.fileName() );

    QMessageBox::critical( 0, "GoldenDict has crashed", errorText );

    errFile.remove();

    return 0;
  }

  installTerminationHandler();

  #ifdef __DO_DEBUG
  {
    rlimit limit;

    memset( &limit, 0, sizeof( limit ) );
    limit.rlim_cur = RLIM_INFINITY;
    limit.rlim_max = RLIM_INFINITY;
    setrlimit( RLIMIT_CORE, &limit );
  }
  #endif

#ifdef __WIN32

  // Under Windows, increase the amount of fopen()-able file descriptors from
  // the default 512 up to 2048.
  _setmaxstdio( 2048 );

#endif

  QHotkeyApplication app( "GoldenDict", argc, argv );

  if ( app.sendMessage("bringToFront") )
    return 0; // Another instance is running

  app.setApplicationName( "GoldenDict" );
  app.setOrganizationDomain( "http://goldendict.org/" );
  app.setStyle(new GdAppStyle);

  #ifndef Q_OS_MAC
    app.setWindowIcon( QIcon( ":/icons/programicon.png" ) );
  #else
    app.setWindowIcon( QIcon( ":/icons/macicon.png" ) );
  #endif

  Config::Class cfg( Config::load() );

  if ( Config::isPortableVersion() )
  {
    // For portable version, hardcode some settings

    cfg.paths.clear();
    cfg.paths.push_back( Config::Path( Config::getPortableVersionDictionaryDir(), true ) );
    cfg.soundDirs.clear();
    cfg.hunspell.dictionariesPath = Config::getPortableVersionMorphoDir();
  }

  // Load translations

  QTranslator qtTranslator;

  QString localeName = cfg.preferences.interfaceLanguage;

  if ( localeName.isEmpty() )
    localeName = QLocale::system().name();

  if ( !qtTranslator.load( "qt_" + localeName,
                           QLibraryInfo::location( QLibraryInfo::TranslationsPath ) ) )
    qtTranslator.load( "qt_" + localeName, Config::getProgramDataDir() + "/locale/" );

  app.installTranslator( &qtTranslator );

  QTranslator translator;

  translator.load( Config::getLocDir() + "/" + localeName );

  app.installTranslator( &translator );

  // Prevent app from quitting spontaneously when it works with scan popup
  // and with the main window closed.
  app.setQuitOnLastWindowClosed( false );

#if QT_VERSION >= 0x040600
  // Add the dictionary scheme we use as local, so that the file:// links would
  // work in the articles. The function was introduced in Qt 4.6.
  QWebSecurityOrigin::addLocalScheme( "gdlookup" );
#endif

  MainWindow m( cfg );

  app.addDataCommiter( m );

  QObject::connect( &app, SIGNAL(messageReceived(const QString&)),
    &m, SLOT(messageFromAnotherInstanceReceived(const QString&)));

  int r = app.exec();

  app.removeDataCommiter( m );

  return r;
}