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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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