Method detectBufferEncoding

libqnapi/src/utils/encodingutils.cpp:134–166

}

QString EncodingUtils::detectBufferEncoding(const QByteArray &buffer) const {
  QTextCodec::ConverterState state;
  QTextCodec::codecForName("UTF-8")->toUnicode(buffer.constData(),
                                               buffer.length(), &state);

  if (state.invalidChars == 0) return "UTF-8";

  int bestMatch = 0;
  QString from;

  foreach (QString codec, codecs) {
    QTextCodec *tc = QTextCodec::codecForName(qPrintable(codec));

    const QString text = tc->toUnicode(buffer.constData(), buffer.size());

    QStringList chars = QString::fromUtf8("ą/ś/ż/ć/ń/ł/ó/ę").split("/");

    int found = 0;

    foreach (QString c, chars) {
      if (text.contains(c, Qt::CaseInsensitive)) {
        ++found;
      }
    }

    if (found >= bestMatch) {
      bestMatch = found;
      from = codec;
    }
  }

  return from;
}

QString EncodingUtils::detectFileEncoding(const QString &filename) const {
  QFile f(filename);