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- ///////////////////////////////////////////////////////////////
- // Copyright 2015 John Maddock. 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_
- //
- #include "performance.hpp"
- #include <boost/regex.hpp>
- #include <boost/version.hpp>
- #include <boost/lexical_cast.hpp>
- struct boost_regex : public abstract_regex
- {
- private:
- boost::regex e;
- boost::cmatch what;
- public:
- virtual bool set_expression(const char* pe, bool isperl)
- {
- e.assign(pe, isperl ? boost::regex::perl : boost::regex::extended);
- return e.status() == 0;
- }
- virtual bool match_test(const char* text);
- virtual unsigned find_all(const char* text);
- virtual std::string name();
- struct initializer
- {
- initializer()
- {
- boost_regex::register_instance(boost::shared_ptr<abstract_regex>(new boost_regex));
- }
- void do_nothing()const {}
- };
- static const initializer init;
- };
- const boost_regex::initializer boost_regex::init;
- bool boost_regex::match_test(const char * text)
- {
- return regex_match(text, what, e);
- }
- unsigned boost_regex::find_all(const char * text)
- {
- boost::regex_iterator<const char*> i(text, text + std::strlen(text), e), j;
- unsigned count = 0;
- while(i != j)
- {
- ++i;
- ++count;
- }
- return count;
- }
- std::string boost_regex::name()
- {
- init.do_nothing();
- return boost_name();
- }
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