C++ const_iterator::isEmpty方法代码示例

static KUrl parseURL( int mRealArgType, const QString& str )
{
  if ( mRealArgType == 33 ) { // LDAP server
    // The format is HOSTNAME:PORT:USERNAME:PASSWORD:BASE_DN
    QStringList items = str.split( ':' );
    if ( items.count() == 5 ) {
      QStringList::const_iterator it = items.constBegin();
      KUrl url;
      url.setProtocol( "ldap" );
      url.setHost( urlpart_decode( *it++ ) );

      bool ok;
      const int port = (*it++).toInt( &ok );
      if ( ok )
          url.setPort( port );
      else if ( !it->isEmpty() )
          kWarning(5150) <<"parseURL: malformed LDAP server port, ignoring: \"" << *it << "\"";

      url.setPath( "/" ); // workaround KUrl parsing bug
      url.setUser( urlpart_decode( *it++ ) );
      url.setPass( urlpart_decode( *it++ ) );
      url.setQuery( urlpart_decode( *it ) );
      return url;
    } else
      kWarning(5150) <<"parseURL: malformed LDAP server:" << str;
  }
  // other URLs : assume wellformed URL syntax.
  return KUrl( str );
}

void SessionListWidget::parseQstat(QString const& qstat)
{
   QStringList lines = qstat.split('\n');

   JobDefinition *job = NULL;
   QMap<QString, QString> jobSpec, jobVars;

   QRegExp rxJobId("[0-9]+\\.pbs01");
   QRegExp rxKey("[A-Za-z_\\.]+");
   QString key(""), value("");
   for(QStringList::const_iterator line = lines.begin();
       line != lines.end();
       line++)
   {
      if(line->isEmpty()) { /* empty */ }
      else if(line->startsWith("Job Id:")) {
         if(job != NULL) {
            job->update(jobSpec);
            sessions.append(*job);
            delete job;
            job = NULL;
            jobSpec.clear();
            jobVars.clear();
         }
         rxJobId.indexIn(*line);
         job = new JobDefinition(rxJobId.cap());
      }
      else if(line->startsWith("    ")) {  /* keys start with 4 spaces */
         if(key == "Variable_List") {
            QStringList vars(jobSpec[key].split(","));
            for(QStringList::const_iterator i = vars.begin();
                i != vars.end(); 
                i++)
            {
               int eq = i->indexOf('=');
               jobVars.insert(i->left(eq), i->mid(eq + 1));
            }
         }
         rxKey.indexIn(*line);
         key = rxKey.cap(0);
         value = line->mid(line->indexOf('=') + 2);
         jobSpec.insert(key, value);
      }
      else if(line->at(0) == '\t') {
         /* append to the previous key */
         jobSpec[key].append(line->mid(1));
      }
   }
   if(job) {
      job->update(jobSpec);
      sessions.append(*job);
   }

   qDebug() << sessions;
}

QString CreateDesktopEntryOperation::absoluteFileName()
{
    const QString filename = arguments().first();

    // give filename is already absolute
    if (QFileInfo(filename).isAbsolute())
        return filename;

    // we're not searching for the first time, let's re-use the old value
    if (hasValue(QLatin1String("directory")))
        return QDir(value(QLatin1String("directory")).toString()).absoluteFilePath(filename);

    const QProcessEnvironment env;
    QStringList XDG_DATA_DIRS = env.value(QLatin1String("XDG_DATA_DIRS")).split(QLatin1Char(':'),
        QString::SkipEmptyParts);
    QStringList XDG_DATA_HOME = env.value(QLatin1String("XDG_DATA_HOME")).split(QLatin1Char(':'),
        QString::SkipEmptyParts);

    XDG_DATA_DIRS.push_back(QLatin1String("/usr/share")); // default path
    XDG_DATA_HOME.push_back(QDir::home().absoluteFilePath(QLatin1String(".local/share"))); // default path

    const QStringList directories = XDG_DATA_DIRS + XDG_DATA_HOME;
    QString directory;
    for (QStringList::const_iterator it = directories.begin(); it != directories.end(); ++it) {
        if (it->isEmpty())
            continue;

        directory = QDir(*it).absoluteFilePath(QLatin1String("applications"));
        QDir dir(directory);

        // let's see whether this dir exists or we're able to create it
        if (!dir.exists() && !QDir().mkpath(directory))
            continue;

        // we just try whether we're able to open the file in ReadWrite
        QFile file(QDir(directory).absoluteFilePath(filename));
        const bool existed = file.exists();
        if (!file.open(QIODevice::ReadWrite))
            continue;
        file.close();
        if (!existed)
            file.remove();
        break;
    }

    if (!QDir(directory).exists())
        QDir().mkpath(directory);

    setValue(QLatin1String("directory"), directory);

    return QDir(directory).absoluteFilePath(filename);
}

void MCpuMonitorPrivate::getCpuUsageInformation(unsigned long &total, unsigned long &idle)
{
    QFile statFile("/proc/stat");

    if (statFile.exists() && statFile.open(QIODevice::ReadOnly)) {
        char buf[256];
        QStringList l;
        unsigned long sum = 0;
        unsigned long tmp;

        qint64 readBytes = statFile.readLine(buf, 256);
        if (readBytes > 0)
            l = QString::fromAscii(buf).split(' ');

        int idx = 0;
        QStringList::const_iterator end = l.constEnd();
        for (QStringList::const_iterator i = l.constBegin(); i != end; ++i) {
            if (!i->isEmpty()) {
                if (idx) {
                    bool success = true;

                    tmp = i->toULong(&success);
                    if (success) {
                        sum += tmp;

                        if (idx == 4)
                            idle = tmp;
                    }
                }

                idx++;
            }
        }

        total = sum;
    }
}

bool MainWindow::LoadDatasetInternal(QStringList files, QString targetFilename,
                                     bool bNoUserInteraction)
{

  if(files.empty()) {
    T_ERROR("No files!");
    return false;
  }

  PleaseWaitDialog pleaseWait(this);
  pleaseWait.SetText("Loading dataset, please wait  ...");
  pleaseWait.AttachLabel(&m_MasterController);

  // First check to make sure the list of files we've been given makes sense.
  for(QStringList::const_iterator fn = files.begin();
      fn != files.end(); ++fn) {
    if(fn->isEmpty()) {
      T_ERROR("Empty filelist");
      return false;
    }
    if(!SysTools::FileExists(std::string(fn->toAscii()))) {
      QString strText = tr("File %1 not found.").arg(*fn);
      T_ERROR("%s", strText.toStdString().c_str());
      if(!bNoUserInteraction) {
        ShowCriticalDialog( "Load Error", strText);
      }
      return false;
    }
  }

  // now determine if we've been given a UVF, and can just open it and be done,
  // or if we need to convert the files.
  // If we were given multiple files, we don't need to do any work; we *know*
  // that needs to be converted.
  shared_ptr<LuaScripting> ss(m_MasterController.LuaScript());
  bool needs_conversion = true;
  if(files.size() == 1) {
    // check to see if we need to convert this file to a supported format.

    if(!ss->cexecRet<bool>("tuvok.io.needsConversion",files[0].toStdString())) {
      needs_conversion = false;

      // It might also be the case that the checksum is bad && we need to
      // report an error, but we don't bother with the checksum if they've
      // asked us not to in the preferences.
      if(!m_bQuickopen && 
         false == ss->cexecRet<bool>("tuvok.io.verify", files[0].toStdString()))
      {
        QString strText = tr("File %1 appears to be a broken UVF file: "
                             "the header looks ok, "
                             "but the checksum does not match.").arg(files[0]);
        T_ERROR("%s", strText.toStdString().c_str());
        if (!bNoUserInteraction) {
          ShowCriticalDialog("Load Error", strText);
        }
        return false;
      }
    }
  }

  QString filename = files[0];
  if(needs_conversion) {
    if (!bNoUserInteraction && targetFilename.isEmpty()) {
      targetFilename = GetConvFilename(files[0]);
    }
    if (targetFilename.isEmpty()) {
      T_ERROR("User interaction disabled but no targetFilename given");
      return false;
    }

    std::list<std::string> stdfiles;
    for(QStringList::const_iterator fn = files.begin();
        fn != files.end(); ++fn) {
      stdfiles.push_back(std::string(fn->toAscii()));
    }

    PleaseWaitDialog pleaseWait(this);
    pleaseWait.SetText("Converting, please wait  ...");
    pleaseWait.AttachLabel(&m_MasterController);

    try {
      ss->cexec("tuvok.io.convertDataset", stdfiles, 
                std::string(targetFilename.toAscii()), m_strTempDir, 
                bNoUserInteraction, false);
      filename = targetFilename;
    } catch(const tuvok::io::IOException& e) {
      // create a (hopefully) useful error message
      std::ostringstream error;
      error << "Unable to convert ";
      std::copy(stdfiles.begin(), stdfiles.end(),
                std::ostream_iterator<std::string>(error, ", "));
      error << " into " << std::string(targetFilename.toAscii())
            << ": " << e.what();
      T_ERROR("%s", error.str().c_str());
      if(!bNoUserInteraction) {
        ShowCriticalDialog("Conversion Error", QString(error.str().c_str()));
      }

      // now close that dialog and bail.
      pleaseWait.close();
//.........这里部分代码省略.........