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+// Boost string_algo library find_regex.hpp header file ---------------------------//
+
+// Copyright Pavol Droba 2002-2003.
+//
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+// See http://www.boost.org/ for updates, documentation, and revision history.
+
+#ifndef BOOST_STRING_FINDER_REGEX_DETAIL_HPP
+#define BOOST_STRING_FINDER_REGEX_DETAIL_HPP
+
+#include <boost/algorithm/string/config.hpp>
+#include <boost/regex.hpp>
+
+#include <boost/range/iterator_range_core.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+
+namespace boost {
+ namespace algorithm {
+ namespace detail {
+
+// regex find functor -----------------------------------------------//
+
+ // regex search result
+ template<typename IteratorT>
+ struct regex_search_result :
+ public iterator_range<IteratorT>
+ {
+ typedef regex_search_result<IteratorT> type;
+ typedef iterator_range<IteratorT> base_type;
+ typedef BOOST_STRING_TYPENAME base_type::value_type value_type;
+ typedef BOOST_STRING_TYPENAME base_type::difference_type difference_type;
+ typedef BOOST_STRING_TYPENAME base_type::const_iterator const_iterator;
+ typedef BOOST_STRING_TYPENAME base_type::iterator iterator;
+ typedef boost::match_results<iterator> match_results_type;
+
+ // Construction
+
+ // Construction from the match result
+ regex_search_result( const match_results_type& MatchResults ) :
+ base_type( MatchResults[0].first, MatchResults[0].second ),
+ m_MatchResults( MatchResults ) {}
+
+ // Construction of empty match. End iterator has to be specified
+ regex_search_result( IteratorT End ) :
+ base_type( End, End ) {}
+
+ regex_search_result( const regex_search_result& Other ) :
+ base_type( Other.begin(), Other.end() ),
+ m_MatchResults( Other.m_MatchResults ) {}
+
+ // Assignment
+ regex_search_result& operator=( const regex_search_result& Other )
+ {
+ base_type::operator=( Other );
+ m_MatchResults=Other.m_MatchResults;
+ return *this;
+ }
+
+ // Match result retrieval
+ const match_results_type& match_results() const
+ {
+ return m_MatchResults;
+ }
+
+ private:
+ // Saved match result
+ match_results_type m_MatchResults;
+ };
+
+ // find_regex
+ /*
+ Regex based search functor
+ */
+ template<typename RegExT>
+ struct find_regexF
+ {
+ typedef RegExT regex_type;
+ typedef const RegExT& regex_reference_type;
+
+ // Construction
+ find_regexF( regex_reference_type Rx, match_flag_type MatchFlags = match_default ) :
+ m_Rx(Rx), m_MatchFlags(MatchFlags) {}
+
+ // Operation
+ template< typename ForwardIteratorT >
+ regex_search_result<ForwardIteratorT>
+ operator()(
+ ForwardIteratorT Begin,
+ ForwardIteratorT End ) const
+ {
+ typedef ForwardIteratorT input_iterator_type;
+ typedef regex_search_result<ForwardIteratorT> result_type;
+
+ // instantiate match result
+ match_results<input_iterator_type> result;
+ // search for a match
+ if ( ::boost::regex_search( Begin, End, result, m_Rx, m_MatchFlags ) )
+ {
+ // construct a result
+ return result_type( result );
+ }
+ else
+ {
+ // empty result
+ return result_type( End );
+ }
+ }
+
+ private:
+ regex_reference_type m_Rx; // Regexp
+ match_flag_type m_MatchFlags; // match flags
+ };
+
+ } // namespace detail
+ } // namespace algorithm
+} // namespace boost
+
+#endif // BOOST_STRING_FIND_DETAIL_HPP