Separate the words by QRegex

[stereoMatching]

QString contents = "lll-###";
 
  QRegExp split("\\b");
 
  QStringList splitContents = contents.split(split, QString::SkipEmptyParts);
  for(QString const &data : splitContents)
  {
      qDebug() << data;
  }

QString contents = "lll-###";

  QRegExp split("\\b");

  QStringList splitContents = contents.split(split, QString::SkipEmptyParts);
  for(QString const &data : splitContents)
  {
      qDebug() << data;
  }

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What I want is "lll-", "###"
The result is "lll", "-###"

What should I do?Thanks

[amleto]

1) work around it.
2) use a different method (string.split ?)

[stereoMatching]

1) work around it.

My pretty nasty work around

//helper function
std::list<std::pair<int, int> > get_positions(QRegExp const &rx, QString const &contents)
{
  int pos = 0;
  std::list<std::pair<int, int> > result;
  while((pos = rx.indexIn(contents, pos)) != -1)
  {
      //qDebug() << pos2 << ", "<< rx.matchedLength();
      result.push_back(std::make_pair(pos, rx.matchedLength()));
      pos += rx.matchedLength();
  }
 
  return result;
}
 
//helper function
template<typename T>
QStringList const split_str_by_positions(T const &position, QString const &contents)
{
    QStringList results;
    for(std::pair<int, int> const &data : position)
    {
        results << contents.mid(data.first, data.second);
    }
 
    return results;
}
 
//split the contents into the QStringList
void test_get_positions()
{    
    QString contents = "lll ### ### ###";
 
    typedef std::pair<int, int> DInt;
    std::list<DInt> positions = get_positions(QRegExp("#+"), contents);
 
    std::list<DInt> positions2 = get_positions(QRegExp("[^#]+"), contents);
 
    struct DIntCompare
    {
        bool operator()(DInt const &one, DInt const &two) const
        { return one.first < two.first; }
    };
 
    positions.merge(positions2, DIntCompare());
 
    qDebug() << "---------------------";
 
    for(DInt const &data : positions) qDebug() << data.first <<", "<<data.second;
 
    QStringList results = split_str_by_positions(positions, contents);
 
    for(QString const &data : results) qDebug() << data;
}

//helper function
std::list<std::pair<int, int> > get_positions(QRegExp const &rx, QString const &contents)
{
  int pos = 0;
  std::list<std::pair<int, int> > result;
  while((pos = rx.indexIn(contents, pos)) != -1)
  {
      //qDebug() << pos2 << ", "<< rx.matchedLength();
      result.push_back(std::make_pair(pos, rx.matchedLength()));
      pos += rx.matchedLength();
  }

  return result;
}

//helper function
template<typename T>
QStringList const split_str_by_positions(T const &position, QString const &contents)
{
    QStringList results;
    for(std::pair<int, int> const &data : position)
    {
        results << contents.mid(data.first, data.second);
    }

    return results;
}

//split the contents into the QStringList
void test_get_positions()
{    
    QString contents = "lll ### ### ###";

    typedef std::pair<int, int> DInt;
    std::list<DInt> positions = get_positions(QRegExp("#+"), contents);

    std::list<DInt> positions2 = get_positions(QRegExp("[^#]+"), contents);

    struct DIntCompare
    {
        bool operator()(DInt const &one, DInt const &two) const
        { return one.first < two.first; }
    };

    positions.merge(positions2, DIntCompare());

    qDebug() << "---------------------";

    for(DInt const &data : positions) qDebug() << data.first <<", "<<data.second;

    QStringList results = split_str_by_positions(positions, contents);

    for(QString const &data : results) qDebug() << data;
}

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Do you have other easier solutions?
My workaround is ugly, want to find other better way to implement it.
Thanks

[ChrisW67]

Two other ways:

QString contents = "lll-###";
 
QStringList result;
int index = contents.lastIndexOf('-');
result << contents.left(index + 1) << contents.mid(index + 1);
qDebug() << result;
 
 
result.clear();
QRegExp re("(.+-)(#+)");
if (re.indexIn(contents) >= 0)
    result << re.cap(1) << re.cap(2);
qDebug() << result;

QString contents = "lll-###";

QStringList result;
int index = contents.lastIndexOf('-');
result << contents.left(index + 1) << contents.mid(index + 1);
qDebug() << result;


result.clear();
QRegExp re("(.+-)(#+)");
if (re.indexIn(contents) >= 0)
    result << re.cap(1) << re.cap(2);
qDebug() << result;

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This is where you tell us that this was not really the requirement you had in mind.