続・C++でStringTokenizerっぽいことをやってみる

std::vector<string> 
slice(const std::string source, const std::string dem)
{
  std::string::size_type i1 = 0;
  std::string::size_type i2 = source.find(dem);
  std::vector<string> retval;

  if(std::string::npos == i2)
    return retval;

  std::string s = source + dem;

  do{
    retval.push_back(s.substr(i1, i2-i1));
    i1 = i2+1;
  }while(std::string::npos != (i2 = s.find(dem, i1)));

  return retval;
}