Beispiel #1
0
bool regex_search(BidiIterator first, BidiIterator last, 
                  const basic_regex<charT, traits>& e, 
                  match_flag_type flags = match_default)
{
   if(e.flags() & regex_constants::failbit)
      return false;

   match_results<BidiIterator> m;
   typedef typename match_results<BidiIterator>::allocator_type match_alloc_type;
   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, match_alloc_type, traits> matcher(first, last, m, e, flags | regex_constants::match_any, first);
   return matcher.find();
}
Beispiel #2
0
bool regex_search(BidiIterator first, BidiIterator last, 
                  match_results<BidiIterator, Allocator>& m, 
                  const basic_regex<charT, traits>& e, 
                  match_flag_type flags,
                  BidiIterator base)
{
   if(e.flags() & regex_constants::failbit)
      return false;

   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, Allocator, traits> matcher(first, last, m, e, flags, base);
   return matcher.find();
}
Beispiel #3
0
inline unsigned int regex_grep(Predicate foo, 
                               BidiIterator first, 
                               BidiIterator last, 
                               const basic_regex<charT, traits>& e, 
                               match_flag_type flags = match_default)
{
   if(e.flags() & regex_constants::failbit)
      return false;

   typedef typename match_results<BidiIterator>::allocator_type match_allocator_type;

   match_results<BidiIterator> m;
   re_detail::perl_matcher<BidiIterator, match_allocator_type, traits> matcher(first, last, m, e, flags, first);
   unsigned int count = 0;
   while(matcher.find())
   {
      ++count;
      if(0 == foo(m))
         return count; // caller doesn't want to go on
      if(m[0].second == last)
         return count; // we've reached the end, don't try and find an extra null match.
      if(m.length() == 0)
      {
         if(m[0].second == last)
            return count;
         // we found a NULL-match, now try to find
         // a non-NULL one at the same position:
         match_results<BidiIterator, match_allocator_type> m2(m);
         matcher.setf(match_not_null | match_continuous);
         if(matcher.find())
         {
            ++count;
            if(0 == foo(m))
               return count;
         }
         else
         {
            // reset match back to where it was:
            m = m2;
         }
         matcher.unsetf((match_not_null | match_continuous) & ~flags);
      }
   }
   return count;
}