Проблема с отображением символов в файле

QVariantList changesList;
...
QVariantMap host;
...
host.insert("title", changes[i].title);
...
changesList << host;
...
QString json = QString(serializer.serialize(hostLinks));
QFile file(filename);
if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
    QMessageBox::warning(0, QObject::tr("File error"), QObject::tr("NewLinks file create error!"));
    return;
}
QTextStream out(&file);
out << json;
file.close();

QByteArray Serializer::SerializerPrivate::serialize( const QVariant &v, int reserved )
{
  QByteArray str;
  bool error = false;
  QByteArray indent;
 
  if ( ! v.isValid() ) { // invalid or null?
    str = "null";
  } else if (( v.type() == QVariant::List ) || ( v.type() == QVariant::StringList )){ // an array or a stringlist?
    const QVariantList list = v.toList();
    QList<QByteArray> values;
    Q_FOREACH( const QVariant& var, list )
    {
      reserved++;
      QByteArray serializedValue = serialize( var,reserved );
      reserved--;
      if ( serializedValue.isNull() ) {
        error = true;
        break;
      }
      values << serializedValue;
    }
 
    if (indentMode == QJson::IndentMinimum) {
      QByteArray indent = buildIndent(reserved - 1);
      str = "[\n" + join( values, ",\n" ) + "\n" + indent + "]";
    }
    else if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull){
      QByteArray indent = buildIndent(reserved);
      str = "[\n" + join( values, ",\n" ) + "\n" + indent + "]";
    }
    else {
      str = "[ " + join( values, ", " ) + " ]";
    }
 
  } else if ( v.type() == QVariant::Map ) { // variant is a map?
    const QVariantMap vmap = v.toMap();
    QMapIterator<QString, QVariant> it( vmap );
 
    if (indentMode == QJson::IndentMinimum) {
      QByteArray indent = buildIndent(reserved);
      str = indent + "{ ";
    }
    else if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull) {
      QByteArray indent = buildIndent(reserved);
      QByteArray nextindent = buildIndent(reserved + 1);
      str = indent + "{\n" + nextindent;
    }
    else {
      str = "{ ";
    }
 
    QList<QByteArray> pairs;
    while ( it.hasNext() ) {
      it.next();
      reserved++;
      QByteArray serializedValue = serialize( it.value() , reserved);
      reserved--;
      if ( serializedValue.isNull() ) {
        error = true;
        break;
      }
      pairs << sanitizeString( it.key() ).toUtf8() + " : " + serializedValue;
    }
 
    if (indentMode == QJson::IndentFull) {
      QByteArray indent = buildIndent(reserved + 1);
      str += join( pairs, ",\n" + indent);
    }
...