goldendict-ng/src/main.cc

/* This file is (c) 2008-2009 Konstantin Isakov <ikm@users.berlios.de>
 * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */

#include <QIcon>
#include "mainwindow.hh"
#include "config.hh"

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

//#define __DO_DEBUG

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

int main( int argc, char ** argv )
{
  #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

  QHotkeyApplication app( argc, argv );

  app.setApplicationName( "GoldenDict" );
  app.setOrganizationDomain( "http://goldendict.berlios.de/" );

  app.setWindowIcon( QIcon( ":/icons/programicon.png" ) );

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


  // Prevent execution of the 2nd copy

  // get pid
  quint64 current_pid = QCoreApplication::applicationPid();

  QString app_fname = QFileInfo(QCoreApplication::applicationFilePath()).baseName();
  quint64 pid = ProcessWrapper::findProcess(
          app_fname.toAscii().data(),
          current_pid);

  // check pid file
  QString pid_name = QDir::homePath() + "/.pid";
  QFile pid_file(pid_name);
  if (pid_file.exists()) // pid file exists, check it
  {
    pid_file.open(QIODevice::ReadWrite);
    QDataStream ds(&pid_file);
    quint64 tmp; ds >> tmp;
    if (tmp == pid) // it is active - exiting
    {
      // to do: switch to pid ?
      pid_file.close();
      return 1;
    }
  }

  pid_file.open(QIODevice::WriteOnly);
  QDataStream ds(&pid_file);
  ds << current_pid;
  pid_file.close();


  // Load translations

  QTranslator qtTranslator;

  QString localeName = cfg.preferences.interfaceLanguage;

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

  qtTranslator.load( "qt_" + localeName,
                     QLibraryInfo::location( QLibraryInfo::TranslationsPath ) );
  app.installTranslator( &qtTranslator );

  QTranslator translator;
  translator.load( QString( Config::getProgramDataDir() ) + "/locale/" + localeName );
  app.installTranslator( &translator );

  // Apply qt stylesheet
  MainWindow::applyQtStyleSheet( cfg.preferences.displayStyle );

  MainWindow m( cfg );

  int r = app.exec();

  // remove pid file
  pid_file.remove();

  return r;
}